/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/clang/lib/Parse/ParseExpr.cpp
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1 | | //===--- ParseExpr.cpp - Expression Parsing -------------------------------===// |
2 | | // |
3 | | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | | // See https://llvm.org/LICENSE.txt for license information. |
5 | | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | | // |
7 | | //===----------------------------------------------------------------------===// |
8 | | /// |
9 | | /// \file |
10 | | /// Provides the Expression parsing implementation. |
11 | | /// |
12 | | /// Expressions in C99 basically consist of a bunch of binary operators with |
13 | | /// unary operators and other random stuff at the leaves. |
14 | | /// |
15 | | /// In the C99 grammar, these unary operators bind tightest and are represented |
16 | | /// as the 'cast-expression' production. Everything else is either a binary |
17 | | /// operator (e.g. '/') or a ternary operator ("?:"). The unary leaves are |
18 | | /// handled by ParseCastExpression, the higher level pieces are handled by |
19 | | /// ParseBinaryExpression. |
20 | | /// |
21 | | //===----------------------------------------------------------------------===// |
22 | | |
23 | | #include "clang/Parse/Parser.h" |
24 | | #include "clang/AST/ASTContext.h" |
25 | | #include "clang/Basic/PrettyStackTrace.h" |
26 | | #include "clang/Parse/RAIIObjectsForParser.h" |
27 | | #include "clang/Sema/DeclSpec.h" |
28 | | #include "clang/Sema/ParsedTemplate.h" |
29 | | #include "clang/Sema/Scope.h" |
30 | | #include "clang/Sema/TypoCorrection.h" |
31 | | #include "llvm/ADT/SmallVector.h" |
32 | | using namespace clang; |
33 | | |
34 | | /// Simple precedence-based parser for binary/ternary operators. |
35 | | /// |
36 | | /// Note: we diverge from the C99 grammar when parsing the assignment-expression |
37 | | /// production. C99 specifies that the LHS of an assignment operator should be |
38 | | /// parsed as a unary-expression, but consistency dictates that it be a |
39 | | /// conditional-expession. In practice, the important thing here is that the |
40 | | /// LHS of an assignment has to be an l-value, which productions between |
41 | | /// unary-expression and conditional-expression don't produce. Because we want |
42 | | /// consistency, we parse the LHS as a conditional-expression, then check for |
43 | | /// l-value-ness in semantic analysis stages. |
44 | | /// |
45 | | /// \verbatim |
46 | | /// pm-expression: [C++ 5.5] |
47 | | /// cast-expression |
48 | | /// pm-expression '.*' cast-expression |
49 | | /// pm-expression '->*' cast-expression |
50 | | /// |
51 | | /// multiplicative-expression: [C99 6.5.5] |
52 | | /// Note: in C++, apply pm-expression instead of cast-expression |
53 | | /// cast-expression |
54 | | /// multiplicative-expression '*' cast-expression |
55 | | /// multiplicative-expression '/' cast-expression |
56 | | /// multiplicative-expression '%' cast-expression |
57 | | /// |
58 | | /// additive-expression: [C99 6.5.6] |
59 | | /// multiplicative-expression |
60 | | /// additive-expression '+' multiplicative-expression |
61 | | /// additive-expression '-' multiplicative-expression |
62 | | /// |
63 | | /// shift-expression: [C99 6.5.7] |
64 | | /// additive-expression |
65 | | /// shift-expression '<<' additive-expression |
66 | | /// shift-expression '>>' additive-expression |
67 | | /// |
68 | | /// compare-expression: [C++20 expr.spaceship] |
69 | | /// shift-expression |
70 | | /// compare-expression '<=>' shift-expression |
71 | | /// |
72 | | /// relational-expression: [C99 6.5.8] |
73 | | /// compare-expression |
74 | | /// relational-expression '<' compare-expression |
75 | | /// relational-expression '>' compare-expression |
76 | | /// relational-expression '<=' compare-expression |
77 | | /// relational-expression '>=' compare-expression |
78 | | /// |
79 | | /// equality-expression: [C99 6.5.9] |
80 | | /// relational-expression |
81 | | /// equality-expression '==' relational-expression |
82 | | /// equality-expression '!=' relational-expression |
83 | | /// |
84 | | /// AND-expression: [C99 6.5.10] |
85 | | /// equality-expression |
86 | | /// AND-expression '&' equality-expression |
87 | | /// |
88 | | /// exclusive-OR-expression: [C99 6.5.11] |
89 | | /// AND-expression |
90 | | /// exclusive-OR-expression '^' AND-expression |
91 | | /// |
92 | | /// inclusive-OR-expression: [C99 6.5.12] |
93 | | /// exclusive-OR-expression |
94 | | /// inclusive-OR-expression '|' exclusive-OR-expression |
95 | | /// |
96 | | /// logical-AND-expression: [C99 6.5.13] |
97 | | /// inclusive-OR-expression |
98 | | /// logical-AND-expression '&&' inclusive-OR-expression |
99 | | /// |
100 | | /// logical-OR-expression: [C99 6.5.14] |
101 | | /// logical-AND-expression |
102 | | /// logical-OR-expression '||' logical-AND-expression |
103 | | /// |
104 | | /// conditional-expression: [C99 6.5.15] |
105 | | /// logical-OR-expression |
106 | | /// logical-OR-expression '?' expression ':' conditional-expression |
107 | | /// [GNU] logical-OR-expression '?' ':' conditional-expression |
108 | | /// [C++] the third operand is an assignment-expression |
109 | | /// |
110 | | /// assignment-expression: [C99 6.5.16] |
111 | | /// conditional-expression |
112 | | /// unary-expression assignment-operator assignment-expression |
113 | | /// [C++] throw-expression [C++ 15] |
114 | | /// |
115 | | /// assignment-operator: one of |
116 | | /// = *= /= %= += -= <<= >>= &= ^= |= |
117 | | /// |
118 | | /// expression: [C99 6.5.17] |
119 | | /// assignment-expression ...[opt] |
120 | | /// expression ',' assignment-expression ...[opt] |
121 | | /// \endverbatim |
122 | 9.95M | ExprResult Parser::ParseExpression(TypeCastState isTypeCast) { |
123 | 9.95M | ExprResult LHS(ParseAssignmentExpression(isTypeCast)); |
124 | 9.95M | return ParseRHSOfBinaryExpression(LHS, prec::Comma); |
125 | 9.95M | } |
126 | | |
127 | | /// This routine is called when the '@' is seen and consumed. |
128 | | /// Current token is an Identifier and is not a 'try'. This |
129 | | /// routine is necessary to disambiguate \@try-statement from, |
130 | | /// for example, \@encode-expression. |
131 | | /// |
132 | | ExprResult |
133 | 252 | Parser::ParseExpressionWithLeadingAt(SourceLocation AtLoc) { |
134 | 252 | ExprResult LHS(ParseObjCAtExpression(AtLoc)); |
135 | 252 | return ParseRHSOfBinaryExpression(LHS, prec::Comma); |
136 | 252 | } |
137 | | |
138 | | /// This routine is called when a leading '__extension__' is seen and |
139 | | /// consumed. This is necessary because the token gets consumed in the |
140 | | /// process of disambiguating between an expression and a declaration. |
141 | | ExprResult |
142 | 1.17k | Parser::ParseExpressionWithLeadingExtension(SourceLocation ExtLoc) { |
143 | 1.17k | ExprResult LHS(true); |
144 | 1.17k | { |
145 | 1.17k | // Silence extension warnings in the sub-expression |
146 | 1.17k | ExtensionRAIIObject O(Diags); |
147 | 1.17k | |
148 | 1.17k | LHS = ParseCastExpression(false); |
149 | 1.17k | } |
150 | 1.17k | |
151 | 1.17k | if (!LHS.isInvalid()) |
152 | 1.16k | LHS = Actions.ActOnUnaryOp(getCurScope(), ExtLoc, tok::kw___extension__, |
153 | 1.16k | LHS.get()); |
154 | 1.17k | |
155 | 1.17k | return ParseRHSOfBinaryExpression(LHS, prec::Comma); |
156 | 1.17k | } |
157 | | |
158 | | /// Parse an expr that doesn't include (top-level) commas. |
159 | 27.8M | ExprResult Parser::ParseAssignmentExpression(TypeCastState isTypeCast) { |
160 | 27.8M | if (Tok.is(tok::code_completion)) { |
161 | 188 | Actions.CodeCompleteExpression(getCurScope(), |
162 | 188 | PreferredType.get(Tok.getLocation())); |
163 | 188 | cutOffParsing(); |
164 | 188 | return ExprError(); |
165 | 188 | } |
166 | 27.8M | |
167 | 27.8M | if (Tok.is(tok::kw_throw)) |
168 | 10.1k | return ParseThrowExpression(); |
169 | 27.8M | if (Tok.is(tok::kw_co_yield)) |
170 | 63 | return ParseCoyieldExpression(); |
171 | 27.8M | |
172 | 27.8M | ExprResult LHS = ParseCastExpression(/*isUnaryExpression=*/false, |
173 | 27.8M | /*isAddressOfOperand=*/false, |
174 | 27.8M | isTypeCast); |
175 | 27.8M | return ParseRHSOfBinaryExpression(LHS, prec::Assignment); |
176 | 27.8M | } |
177 | | |
178 | | /// Parse an assignment expression where part of an Objective-C message |
179 | | /// send has already been parsed. |
180 | | /// |
181 | | /// In this case \p LBracLoc indicates the location of the '[' of the message |
182 | | /// send, and either \p ReceiverName or \p ReceiverExpr is non-null indicating |
183 | | /// the receiver of the message. |
184 | | /// |
185 | | /// Since this handles full assignment-expression's, it handles postfix |
186 | | /// expressions and other binary operators for these expressions as well. |
187 | | ExprResult |
188 | | Parser::ParseAssignmentExprWithObjCMessageExprStart(SourceLocation LBracLoc, |
189 | | SourceLocation SuperLoc, |
190 | | ParsedType ReceiverType, |
191 | 68 | Expr *ReceiverExpr) { |
192 | 68 | ExprResult R |
193 | 68 | = ParseObjCMessageExpressionBody(LBracLoc, SuperLoc, |
194 | 68 | ReceiverType, ReceiverExpr); |
195 | 68 | R = ParsePostfixExpressionSuffix(R); |
196 | 68 | return ParseRHSOfBinaryExpression(R, prec::Assignment); |
197 | 68 | } |
198 | | |
199 | | ExprResult |
200 | 1.20M | Parser::ParseConstantExpressionInExprEvalContext(TypeCastState isTypeCast) { |
201 | 1.20M | assert(Actions.ExprEvalContexts.back().Context == |
202 | 1.20M | Sema::ExpressionEvaluationContext::ConstantEvaluated && |
203 | 1.20M | "Call this function only if your ExpressionEvaluationContext is " |
204 | 1.20M | "already ConstantEvaluated"); |
205 | 1.20M | ExprResult LHS(ParseCastExpression(false, false, isTypeCast)); |
206 | 1.20M | ExprResult Res(ParseRHSOfBinaryExpression(LHS, prec::Conditional)); |
207 | 1.20M | return Actions.ActOnConstantExpression(Res); |
208 | 1.20M | } |
209 | | |
210 | 378k | ExprResult Parser::ParseConstantExpression(TypeCastState isTypeCast) { |
211 | 378k | // C++03 [basic.def.odr]p2: |
212 | 378k | // An expression is potentially evaluated unless it appears where an |
213 | 378k | // integral constant expression is required (see 5.19) [...]. |
214 | 378k | // C++98 and C++11 have no such rule, but this is only a defect in C++98. |
215 | 378k | EnterExpressionEvaluationContext ConstantEvaluated( |
216 | 378k | Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
217 | 378k | return ParseConstantExpressionInExprEvalContext(isTypeCast); |
218 | 378k | } |
219 | | |
220 | 62.7k | ExprResult Parser::ParseCaseExpression(SourceLocation CaseLoc) { |
221 | 62.7k | EnterExpressionEvaluationContext ConstantEvaluated( |
222 | 62.7k | Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
223 | 62.7k | ExprResult LHS(ParseCastExpression(false, false, NotTypeCast)); |
224 | 62.7k | ExprResult Res(ParseRHSOfBinaryExpression(LHS, prec::Conditional)); |
225 | 62.7k | return Actions.ActOnCaseExpr(CaseLoc, Res); |
226 | 62.7k | } |
227 | | |
228 | | /// Parse a constraint-expression. |
229 | | /// |
230 | | /// \verbatim |
231 | | /// constraint-expression: [Concepts TS temp.constr.decl p1] |
232 | | /// logical-or-expression |
233 | | /// \endverbatim |
234 | 57 | ExprResult Parser::ParseConstraintExpression() { |
235 | 57 | // FIXME: this may erroneously consume a function-body as the braced |
236 | 57 | // initializer list of a compound literal |
237 | 57 | // |
238 | 57 | // FIXME: this may erroneously consume a parenthesized rvalue reference |
239 | 57 | // declarator as a parenthesized address-of-label expression |
240 | 57 | ExprResult LHS(ParseCastExpression(/*isUnaryExpression=*/false)); |
241 | 57 | ExprResult Res(ParseRHSOfBinaryExpression(LHS, prec::LogicalOr)); |
242 | 57 | |
243 | 57 | return Res; |
244 | 57 | } |
245 | | |
246 | 53.1k | bool Parser::isNotExpressionStart() { |
247 | 53.1k | tok::TokenKind K = Tok.getKind(); |
248 | 53.1k | if (K == tok::l_brace || K == tok::r_brace53.1k || |
249 | 53.1k | K == tok::kw_for53.1k || K == tok::kw_while53.1k || |
250 | 53.1k | K == tok::kw_if53.1k || K == tok::kw_else53.1k || |
251 | 53.1k | K == tok::kw_goto53.1k || K == tok::kw_try53.1k ) |
252 | 5 | return true; |
253 | 53.1k | // If this is a decl-specifier, we can't be at the start of an expression. |
254 | 53.1k | return isKnownToBeDeclarationSpecifier(); |
255 | 53.1k | } |
256 | | |
257 | 7.57M | bool Parser::isFoldOperator(prec::Level Level) const { |
258 | 7.57M | return Level > prec::Unknown && Level != prec::Conditional5.34M && |
259 | 7.57M | Level != prec::Spaceship5.21M ; |
260 | 7.57M | } |
261 | | |
262 | 2.22M | bool Parser::isFoldOperator(tok::TokenKind Kind) const { |
263 | 2.22M | return isFoldOperator(getBinOpPrecedence(Kind, GreaterThanIsOperator, true)); |
264 | 2.22M | } |
265 | | |
266 | | /// Parse a binary expression that starts with \p LHS and has a |
267 | | /// precedence of at least \p MinPrec. |
268 | | ExprResult |
269 | 39.3M | Parser::ParseRHSOfBinaryExpression(ExprResult LHS, prec::Level MinPrec) { |
270 | 39.3M | prec::Level NextTokPrec = getBinOpPrecedence(Tok.getKind(), |
271 | 39.3M | GreaterThanIsOperator, |
272 | 39.3M | getLangOpts().CPlusPlus11); |
273 | 39.3M | SourceLocation ColonLoc; |
274 | 39.3M | |
275 | 39.3M | auto SavedType = PreferredType; |
276 | 44.7M | while (1) { |
277 | 44.7M | // Every iteration may rely on a preferred type for the whole expression. |
278 | 44.7M | PreferredType = SavedType; |
279 | 44.7M | // If this token has a lower precedence than we are allowed to parse (e.g. |
280 | 44.7M | // because we are called recursively, or because the token is not a binop), |
281 | 44.7M | // then we are done! |
282 | 44.7M | if (NextTokPrec < MinPrec) |
283 | 39.3M | return LHS; |
284 | 5.34M | |
285 | 5.34M | // Consume the operator, saving the operator token for error reporting. |
286 | 5.34M | Token OpToken = Tok; |
287 | 5.34M | ConsumeToken(); |
288 | 5.34M | |
289 | 5.34M | if (OpToken.is(tok::caretcaret)) { |
290 | 1 | return ExprError(Diag(Tok, diag::err_opencl_logical_exclusive_or)); |
291 | 1 | } |
292 | 5.34M | |
293 | 5.34M | // If we're potentially in a template-id, we may now be able to determine |
294 | 5.34M | // whether we're actually in one or not. |
295 | 5.34M | if (OpToken.isOneOf(tok::comma, tok::greater, tok::greatergreater, |
296 | 5.34M | tok::greatergreatergreater) && |
297 | 5.34M | checkPotentialAngleBracketDelimiter(OpToken)311k ) |
298 | 18 | return ExprError(); |
299 | 5.34M | |
300 | 5.34M | // Bail out when encountering a comma followed by a token which can't |
301 | 5.34M | // possibly be the start of an expression. For instance: |
302 | 5.34M | // int f() { return 1, } |
303 | 5.34M | // We can't do this before consuming the comma, because |
304 | 5.34M | // isNotExpressionStart() looks at the token stream. |
305 | 5.34M | if (OpToken.is(tok::comma) && isNotExpressionStart()53.1k ) { |
306 | 8 | PP.EnterToken(Tok, /*IsReinject*/true); |
307 | 8 | Tok = OpToken; |
308 | 8 | return LHS; |
309 | 8 | } |
310 | 5.34M | |
311 | 5.34M | // If the next token is an ellipsis, then this is a fold-expression. Leave |
312 | 5.34M | // it alone so we can handle it in the paren expression. |
313 | 5.34M | if (isFoldOperator(NextTokPrec) && Tok.is(tok::ellipsis)5.21M ) { |
314 | 202 | // FIXME: We can't check this via lookahead before we consume the token |
315 | 202 | // because that tickles a lexer bug. |
316 | 202 | PP.EnterToken(Tok, /*IsReinject*/true); |
317 | 202 | Tok = OpToken; |
318 | 202 | return LHS; |
319 | 202 | } |
320 | 5.34M | |
321 | 5.34M | // In Objective-C++, alternative operator tokens can be used as keyword args |
322 | 5.34M | // in message expressions. Unconsume the token so that it can reinterpreted |
323 | 5.34M | // as an identifier in ParseObjCMessageExpressionBody. i.e., we support: |
324 | 5.34M | // [foo meth:0 and:0]; |
325 | 5.34M | // [foo not_eq]; |
326 | 5.34M | if (getLangOpts().ObjC && getLangOpts().CPlusPlus28.1k && |
327 | 5.34M | Tok.isOneOf(tok::colon, tok::r_square)7.37k && |
328 | 5.34M | OpToken.getIdentifierInfo() != nullptr25 ) { |
329 | 16 | PP.EnterToken(Tok, /*IsReinject*/true); |
330 | 16 | Tok = OpToken; |
331 | 16 | return LHS; |
332 | 16 | } |
333 | 5.34M | |
334 | 5.34M | // Special case handling for the ternary operator. |
335 | 5.34M | ExprResult TernaryMiddle(true); |
336 | 5.34M | if (NextTokPrec == prec::Conditional) { |
337 | 131k | if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)82.5k ) { |
338 | 1 | // Parse a braced-init-list here for error recovery purposes. |
339 | 1 | SourceLocation BraceLoc = Tok.getLocation(); |
340 | 1 | TernaryMiddle = ParseBraceInitializer(); |
341 | 1 | if (!TernaryMiddle.isInvalid()) { |
342 | 1 | Diag(BraceLoc, diag::err_init_list_bin_op) |
343 | 1 | << /*RHS*/ 1 << PP.getSpelling(OpToken) |
344 | 1 | << Actions.getExprRange(TernaryMiddle.get()); |
345 | 1 | TernaryMiddle = ExprError(); |
346 | 1 | } |
347 | 131k | } else if (Tok.isNot(tok::colon)) { |
348 | 131k | // Don't parse FOO:BAR as if it were a typo for FOO::BAR. |
349 | 131k | ColonProtectionRAIIObject X(*this); |
350 | 131k | |
351 | 131k | // Handle this production specially: |
352 | 131k | // logical-OR-expression '?' expression ':' conditional-expression |
353 | 131k | // In particular, the RHS of the '?' is 'expression', not |
354 | 131k | // 'logical-OR-expression' as we might expect. |
355 | 131k | TernaryMiddle = ParseExpression(); |
356 | 131k | } else { |
357 | 212 | // Special case handling of "X ? Y : Z" where Y is empty: |
358 | 212 | // logical-OR-expression '?' ':' conditional-expression [GNU] |
359 | 212 | TernaryMiddle = nullptr; |
360 | 212 | Diag(Tok, diag::ext_gnu_conditional_expr); |
361 | 212 | } |
362 | 131k | |
363 | 131k | if (TernaryMiddle.isInvalid()) { |
364 | 37 | Actions.CorrectDelayedTyposInExpr(LHS); |
365 | 37 | LHS = ExprError(); |
366 | 37 | TernaryMiddle = nullptr; |
367 | 37 | } |
368 | 131k | |
369 | 131k | if (!TryConsumeToken(tok::colon, ColonLoc)) { |
370 | 7 | // Otherwise, we're missing a ':'. Assume that this was a typo that |
371 | 7 | // the user forgot. If we're not in a macro expansion, we can suggest |
372 | 7 | // a fixit hint. If there were two spaces before the current token, |
373 | 7 | // suggest inserting the colon in between them, otherwise insert ": ". |
374 | 7 | SourceLocation FILoc = Tok.getLocation(); |
375 | 7 | const char *FIText = ": "; |
376 | 7 | const SourceManager &SM = PP.getSourceManager(); |
377 | 7 | if (FILoc.isFileID() || PP.isAtStartOfMacroExpansion(FILoc, &FILoc)2 ) { |
378 | 7 | assert(FILoc.isFileID()); |
379 | 7 | bool IsInvalid = false; |
380 | 7 | const char *SourcePtr = |
381 | 7 | SM.getCharacterData(FILoc.getLocWithOffset(-1), &IsInvalid); |
382 | 7 | if (!IsInvalid && *SourcePtr == ' ') { |
383 | 7 | SourcePtr = |
384 | 7 | SM.getCharacterData(FILoc.getLocWithOffset(-2), &IsInvalid); |
385 | 7 | if (!IsInvalid && *SourcePtr == ' ') { |
386 | 0 | FILoc = FILoc.getLocWithOffset(-1); |
387 | 0 | FIText = ":"; |
388 | 0 | } |
389 | 7 | } |
390 | 7 | } |
391 | 7 | |
392 | 7 | Diag(Tok, diag::err_expected) |
393 | 7 | << tok::colon << FixItHint::CreateInsertion(FILoc, FIText); |
394 | 7 | Diag(OpToken, diag::note_matching) << tok::question; |
395 | 7 | ColonLoc = Tok.getLocation(); |
396 | 7 | } |
397 | 131k | } |
398 | 5.34M | |
399 | 5.34M | PreferredType.enterBinary(Actions, Tok.getLocation(), LHS.get(), |
400 | 5.34M | OpToken.getKind()); |
401 | 5.34M | // Parse another leaf here for the RHS of the operator. |
402 | 5.34M | // ParseCastExpression works here because all RHS expressions in C have it |
403 | 5.34M | // as a prefix, at least. However, in C++, an assignment-expression could |
404 | 5.34M | // be a throw-expression, which is not a valid cast-expression. |
405 | 5.34M | // Therefore we need some special-casing here. |
406 | 5.34M | // Also note that the third operand of the conditional operator is |
407 | 5.34M | // an assignment-expression in C++, and in C++11, we can have a |
408 | 5.34M | // braced-init-list on the RHS of an assignment. For better diagnostics, |
409 | 5.34M | // parse as if we were allowed braced-init-lists everywhere, and check that |
410 | 5.34M | // they only appear on the RHS of assignments later. |
411 | 5.34M | ExprResult RHS; |
412 | 5.34M | bool RHSIsInitList = false; |
413 | 5.34M | if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)3.68M ) { |
414 | 82 | RHS = ParseBraceInitializer(); |
415 | 82 | RHSIsInitList = true; |
416 | 5.34M | } else if (getLangOpts().CPlusPlus && NextTokPrec <= prec::Conditional3.92M ) |
417 | 1.11M | RHS = ParseAssignmentExpression(); |
418 | 4.22M | else |
419 | 4.22M | RHS = ParseCastExpression(false); |
420 | 5.34M | |
421 | 5.34M | if (RHS.isInvalid()) { |
422 | 3.07k | // FIXME: Errors generated by the delayed typo correction should be |
423 | 3.07k | // printed before errors from parsing the RHS, not after. |
424 | 3.07k | Actions.CorrectDelayedTyposInExpr(LHS); |
425 | 3.07k | if (TernaryMiddle.isUsable()) |
426 | 5 | TernaryMiddle = Actions.CorrectDelayedTyposInExpr(TernaryMiddle); |
427 | 3.07k | LHS = ExprError(); |
428 | 3.07k | } |
429 | 5.34M | |
430 | 5.34M | // Remember the precedence of this operator and get the precedence of the |
431 | 5.34M | // operator immediately to the right of the RHS. |
432 | 5.34M | prec::Level ThisPrec = NextTokPrec; |
433 | 5.34M | NextTokPrec = getBinOpPrecedence(Tok.getKind(), GreaterThanIsOperator, |
434 | 5.34M | getLangOpts().CPlusPlus11); |
435 | 5.34M | |
436 | 5.34M | // Assignment and conditional expressions are right-associative. |
437 | 5.34M | bool isRightAssoc = ThisPrec == prec::Conditional || |
438 | 5.34M | ThisPrec == prec::Assignment5.21M ; |
439 | 5.34M | |
440 | 5.34M | // Get the precedence of the operator to the right of the RHS. If it binds |
441 | 5.34M | // more tightly with RHS than we do, evaluate it completely first. |
442 | 5.34M | if (ThisPrec < NextTokPrec || |
443 | 5.34M | (5.04M ThisPrec == NextTokPrec5.04M && isRightAssoc194k )) { |
444 | 308k | if (!RHS.isInvalid() && RHSIsInitList308k ) { |
445 | 4 | Diag(Tok, diag::err_init_list_bin_op) |
446 | 4 | << /*LHS*/0 << PP.getSpelling(Tok) << Actions.getExprRange(RHS.get()); |
447 | 4 | RHS = ExprError(); |
448 | 4 | } |
449 | 308k | // If this is left-associative, only parse things on the RHS that bind |
450 | 308k | // more tightly than the current operator. If it is left-associative, it |
451 | 308k | // is okay, to bind exactly as tightly. For example, compile A=B=C=D as |
452 | 308k | // A=(B=(C=D)), where each paren is a level of recursion here. |
453 | 308k | // The function takes ownership of the RHS. |
454 | 308k | RHS = ParseRHSOfBinaryExpression(RHS, |
455 | 308k | static_cast<prec::Level>(ThisPrec + !isRightAssoc)); |
456 | 308k | RHSIsInitList = false; |
457 | 308k | |
458 | 308k | if (RHS.isInvalid()) { |
459 | 324 | // FIXME: Errors generated by the delayed typo correction should be |
460 | 324 | // printed before errors from ParseRHSOfBinaryExpression, not after. |
461 | 324 | Actions.CorrectDelayedTyposInExpr(LHS); |
462 | 324 | if (TernaryMiddle.isUsable()) |
463 | 0 | TernaryMiddle = Actions.CorrectDelayedTyposInExpr(TernaryMiddle); |
464 | 324 | LHS = ExprError(); |
465 | 324 | } |
466 | 308k | |
467 | 308k | NextTokPrec = getBinOpPrecedence(Tok.getKind(), GreaterThanIsOperator, |
468 | 308k | getLangOpts().CPlusPlus11); |
469 | 308k | } |
470 | 5.34M | |
471 | 5.34M | if (!RHS.isInvalid() && RHSIsInitList5.34M ) { |
472 | 78 | if (ThisPrec == prec::Assignment) { |
473 | 75 | Diag(OpToken, diag::warn_cxx98_compat_generalized_initializer_lists) |
474 | 75 | << Actions.getExprRange(RHS.get()); |
475 | 75 | } else if (3 ColonLoc.isValid()3 ) { |
476 | 1 | Diag(ColonLoc, diag::err_init_list_bin_op) |
477 | 1 | << /*RHS*/1 << ":" |
478 | 1 | << Actions.getExprRange(RHS.get()); |
479 | 1 | LHS = ExprError(); |
480 | 2 | } else { |
481 | 2 | Diag(OpToken, diag::err_init_list_bin_op) |
482 | 2 | << /*RHS*/1 << PP.getSpelling(OpToken) |
483 | 2 | << Actions.getExprRange(RHS.get()); |
484 | 2 | LHS = ExprError(); |
485 | 2 | } |
486 | 78 | } |
487 | 5.34M | |
488 | 5.34M | ExprResult OrigLHS = LHS; |
489 | 5.34M | if (!LHS.isInvalid()) { |
490 | 5.34M | // Combine the LHS and RHS into the LHS (e.g. build AST). |
491 | 5.34M | if (TernaryMiddle.isInvalid()) { |
492 | 5.21M | // If we're using '>>' as an operator within a template |
493 | 5.21M | // argument list (in C++98), suggest the addition of |
494 | 5.21M | // parentheses so that the code remains well-formed in C++0x. |
495 | 5.21M | if (!GreaterThanIsOperator && OpToken.is(tok::greatergreater)127k ) |
496 | 4 | SuggestParentheses(OpToken.getLocation(), |
497 | 4 | diag::warn_cxx11_right_shift_in_template_arg, |
498 | 4 | SourceRange(Actions.getExprRange(LHS.get()).getBegin(), |
499 | 4 | Actions.getExprRange(RHS.get()).getEnd())); |
500 | 5.21M | |
501 | 5.21M | LHS = Actions.ActOnBinOp(getCurScope(), OpToken.getLocation(), |
502 | 5.21M | OpToken.getKind(), LHS.get(), RHS.get()); |
503 | 5.21M | |
504 | 5.21M | } else { |
505 | 131k | LHS = Actions.ActOnConditionalOp(OpToken.getLocation(), ColonLoc, |
506 | 131k | LHS.get(), TernaryMiddle.get(), |
507 | 131k | RHS.get()); |
508 | 131k | } |
509 | 5.34M | // In this case, ActOnBinOp or ActOnConditionalOp performed the |
510 | 5.34M | // CorrectDelayedTyposInExpr check. |
511 | 5.34M | if (!getLangOpts().CPlusPlus) |
512 | 1.42M | continue; |
513 | 3.92M | } |
514 | 3.92M | |
515 | 3.92M | // Ensure potential typos aren't left undiagnosed. |
516 | 3.92M | if (LHS.isInvalid()) { |
517 | 5.40k | Actions.CorrectDelayedTyposInExpr(OrigLHS); |
518 | 5.40k | Actions.CorrectDelayedTyposInExpr(TernaryMiddle); |
519 | 5.40k | Actions.CorrectDelayedTyposInExpr(RHS); |
520 | 5.40k | } |
521 | 3.92M | } |
522 | 39.3M | } |
523 | | |
524 | | /// Parse a cast-expression, or, if \p isUnaryExpression is true, |
525 | | /// parse a unary-expression. |
526 | | /// |
527 | | /// \p isAddressOfOperand exists because an id-expression that is the |
528 | | /// operand of address-of gets special treatment due to member pointers. |
529 | | /// |
530 | | ExprResult Parser::ParseCastExpression(bool isUnaryExpression, |
531 | | bool isAddressOfOperand, |
532 | | TypeCastState isTypeCast, |
533 | 40.3M | bool isVectorLiteral) { |
534 | 40.3M | bool NotCastExpr; |
535 | 40.3M | ExprResult Res = ParseCastExpression(isUnaryExpression, |
536 | 40.3M | isAddressOfOperand, |
537 | 40.3M | NotCastExpr, |
538 | 40.3M | isTypeCast, |
539 | 40.3M | isVectorLiteral); |
540 | 40.3M | if (NotCastExpr) |
541 | 8.35k | Diag(Tok, diag::err_expected_expression); |
542 | 40.3M | return Res; |
543 | 40.3M | } |
544 | | |
545 | | namespace { |
546 | | class CastExpressionIdValidator final : public CorrectionCandidateCallback { |
547 | | public: |
548 | | CastExpressionIdValidator(Token Next, bool AllowTypes, bool AllowNonTypes) |
549 | 14.5M | : NextToken(Next), AllowNonTypes(AllowNonTypes) { |
550 | 14.5M | WantTypeSpecifiers = WantFunctionLikeCasts = AllowTypes; |
551 | 14.5M | } |
552 | | |
553 | 372 | bool ValidateCandidate(const TypoCorrection &candidate) override { |
554 | 372 | NamedDecl *ND = candidate.getCorrectionDecl(); |
555 | 372 | if (!ND) |
556 | 11 | return candidate.isKeyword(); |
557 | 361 | |
558 | 361 | if (isa<TypeDecl>(ND)) |
559 | 22 | return WantTypeSpecifiers; |
560 | 339 | |
561 | 339 | if (!AllowNonTypes || !CorrectionCandidateCallback::ValidateCandidate(candidate)331 ) |
562 | 8 | return false; |
563 | 331 | |
564 | 331 | if (!NextToken.isOneOf(tok::equal, tok::arrow, tok::period)) |
565 | 257 | return true; |
566 | 74 | |
567 | 74 | for (auto *C : candidate) { |
568 | 74 | NamedDecl *ND = C->getUnderlyingDecl(); |
569 | 74 | if (isa<ValueDecl>(ND) && !isa<FunctionDecl>(ND)71 ) |
570 | 65 | return true; |
571 | 74 | } |
572 | 74 | return false9 ; |
573 | 74 | } |
574 | | |
575 | 1.32k | std::unique_ptr<CorrectionCandidateCallback> clone() override { |
576 | 1.32k | return llvm::make_unique<CastExpressionIdValidator>(*this); |
577 | 1.32k | } |
578 | | |
579 | | private: |
580 | | Token NextToken; |
581 | | bool AllowNonTypes; |
582 | | }; |
583 | | } |
584 | | |
585 | | /// Parse a cast-expression, or, if \pisUnaryExpression is true, parse |
586 | | /// a unary-expression. |
587 | | /// |
588 | | /// \p isAddressOfOperand exists because an id-expression that is the operand |
589 | | /// of address-of gets special treatment due to member pointers. NotCastExpr |
590 | | /// is set to true if the token is not the start of a cast-expression, and no |
591 | | /// diagnostic is emitted in this case and no tokens are consumed. |
592 | | /// |
593 | | /// \verbatim |
594 | | /// cast-expression: [C99 6.5.4] |
595 | | /// unary-expression |
596 | | /// '(' type-name ')' cast-expression |
597 | | /// |
598 | | /// unary-expression: [C99 6.5.3] |
599 | | /// postfix-expression |
600 | | /// '++' unary-expression |
601 | | /// '--' unary-expression |
602 | | /// [Coro] 'co_await' cast-expression |
603 | | /// unary-operator cast-expression |
604 | | /// 'sizeof' unary-expression |
605 | | /// 'sizeof' '(' type-name ')' |
606 | | /// [C++11] 'sizeof' '...' '(' identifier ')' |
607 | | /// [GNU] '__alignof' unary-expression |
608 | | /// [GNU] '__alignof' '(' type-name ')' |
609 | | /// [C11] '_Alignof' '(' type-name ')' |
610 | | /// [C++11] 'alignof' '(' type-id ')' |
611 | | /// [GNU] '&&' identifier |
612 | | /// [C++11] 'noexcept' '(' expression ')' [C++11 5.3.7] |
613 | | /// [C++] new-expression |
614 | | /// [C++] delete-expression |
615 | | /// |
616 | | /// unary-operator: one of |
617 | | /// '&' '*' '+' '-' '~' '!' |
618 | | /// [GNU] '__extension__' '__real' '__imag' |
619 | | /// |
620 | | /// primary-expression: [C99 6.5.1] |
621 | | /// [C99] identifier |
622 | | /// [C++] id-expression |
623 | | /// constant |
624 | | /// string-literal |
625 | | /// [C++] boolean-literal [C++ 2.13.5] |
626 | | /// [C++11] 'nullptr' [C++11 2.14.7] |
627 | | /// [C++11] user-defined-literal |
628 | | /// '(' expression ')' |
629 | | /// [C11] generic-selection |
630 | | /// '__func__' [C99 6.4.2.2] |
631 | | /// [GNU] '__FUNCTION__' |
632 | | /// [MS] '__FUNCDNAME__' |
633 | | /// [MS] 'L__FUNCTION__' |
634 | | /// [MS] '__FUNCSIG__' |
635 | | /// [MS] 'L__FUNCSIG__' |
636 | | /// [GNU] '__PRETTY_FUNCTION__' |
637 | | /// [GNU] '(' compound-statement ')' |
638 | | /// [GNU] '__builtin_va_arg' '(' assignment-expression ',' type-name ')' |
639 | | /// [GNU] '__builtin_offsetof' '(' type-name ',' offsetof-member-designator')' |
640 | | /// [GNU] '__builtin_choose_expr' '(' assign-expr ',' assign-expr ',' |
641 | | /// assign-expr ')' |
642 | | /// [GNU] '__builtin_FILE' '(' ')' |
643 | | /// [GNU] '__builtin_FUNCTION' '(' ')' |
644 | | /// [GNU] '__builtin_LINE' '(' ')' |
645 | | /// [CLANG] '__builtin_COLUMN' '(' ')' |
646 | | /// [GNU] '__builtin_types_compatible_p' '(' type-name ',' type-name ')' |
647 | | /// [GNU] '__null' |
648 | | /// [OBJC] '[' objc-message-expr ']' |
649 | | /// [OBJC] '\@selector' '(' objc-selector-arg ')' |
650 | | /// [OBJC] '\@protocol' '(' identifier ')' |
651 | | /// [OBJC] '\@encode' '(' type-name ')' |
652 | | /// [OBJC] objc-string-literal |
653 | | /// [C++] simple-type-specifier '(' expression-list[opt] ')' [C++ 5.2.3] |
654 | | /// [C++11] simple-type-specifier braced-init-list [C++11 5.2.3] |
655 | | /// [C++] typename-specifier '(' expression-list[opt] ')' [C++ 5.2.3] |
656 | | /// [C++11] typename-specifier braced-init-list [C++11 5.2.3] |
657 | | /// [C++] 'const_cast' '<' type-name '>' '(' expression ')' [C++ 5.2p1] |
658 | | /// [C++] 'dynamic_cast' '<' type-name '>' '(' expression ')' [C++ 5.2p1] |
659 | | /// [C++] 'reinterpret_cast' '<' type-name '>' '(' expression ')' [C++ 5.2p1] |
660 | | /// [C++] 'static_cast' '<' type-name '>' '(' expression ')' [C++ 5.2p1] |
661 | | /// [C++] 'typeid' '(' expression ')' [C++ 5.2p1] |
662 | | /// [C++] 'typeid' '(' type-id ')' [C++ 5.2p1] |
663 | | /// [C++] 'this' [C++ 9.3.2] |
664 | | /// [G++] unary-type-trait '(' type-id ')' |
665 | | /// [G++] binary-type-trait '(' type-id ',' type-id ')' [TODO] |
666 | | /// [EMBT] array-type-trait '(' type-id ',' integer ')' |
667 | | /// [clang] '^' block-literal |
668 | | /// |
669 | | /// constant: [C99 6.4.4] |
670 | | /// integer-constant |
671 | | /// floating-constant |
672 | | /// enumeration-constant -> identifier |
673 | | /// character-constant |
674 | | /// |
675 | | /// id-expression: [C++ 5.1] |
676 | | /// unqualified-id |
677 | | /// qualified-id |
678 | | /// |
679 | | /// unqualified-id: [C++ 5.1] |
680 | | /// identifier |
681 | | /// operator-function-id |
682 | | /// conversion-function-id |
683 | | /// '~' class-name |
684 | | /// template-id |
685 | | /// |
686 | | /// new-expression: [C++ 5.3.4] |
687 | | /// '::'[opt] 'new' new-placement[opt] new-type-id |
688 | | /// new-initializer[opt] |
689 | | /// '::'[opt] 'new' new-placement[opt] '(' type-id ')' |
690 | | /// new-initializer[opt] |
691 | | /// |
692 | | /// delete-expression: [C++ 5.3.5] |
693 | | /// '::'[opt] 'delete' cast-expression |
694 | | /// '::'[opt] 'delete' '[' ']' cast-expression |
695 | | /// |
696 | | /// [GNU/Embarcadero] unary-type-trait: |
697 | | /// '__is_arithmetic' |
698 | | /// '__is_floating_point' |
699 | | /// '__is_integral' |
700 | | /// '__is_lvalue_expr' |
701 | | /// '__is_rvalue_expr' |
702 | | /// '__is_complete_type' |
703 | | /// '__is_void' |
704 | | /// '__is_array' |
705 | | /// '__is_function' |
706 | | /// '__is_reference' |
707 | | /// '__is_lvalue_reference' |
708 | | /// '__is_rvalue_reference' |
709 | | /// '__is_fundamental' |
710 | | /// '__is_object' |
711 | | /// '__is_scalar' |
712 | | /// '__is_compound' |
713 | | /// '__is_pointer' |
714 | | /// '__is_member_object_pointer' |
715 | | /// '__is_member_function_pointer' |
716 | | /// '__is_member_pointer' |
717 | | /// '__is_const' |
718 | | /// '__is_volatile' |
719 | | /// '__is_trivial' |
720 | | /// '__is_standard_layout' |
721 | | /// '__is_signed' |
722 | | /// '__is_unsigned' |
723 | | /// |
724 | | /// [GNU] unary-type-trait: |
725 | | /// '__has_nothrow_assign' |
726 | | /// '__has_nothrow_copy' |
727 | | /// '__has_nothrow_constructor' |
728 | | /// '__has_trivial_assign' [TODO] |
729 | | /// '__has_trivial_copy' [TODO] |
730 | | /// '__has_trivial_constructor' |
731 | | /// '__has_trivial_destructor' |
732 | | /// '__has_virtual_destructor' |
733 | | /// '__is_abstract' [TODO] |
734 | | /// '__is_class' |
735 | | /// '__is_empty' [TODO] |
736 | | /// '__is_enum' |
737 | | /// '__is_final' |
738 | | /// '__is_pod' |
739 | | /// '__is_polymorphic' |
740 | | /// '__is_sealed' [MS] |
741 | | /// '__is_trivial' |
742 | | /// '__is_union' |
743 | | /// '__has_unique_object_representations' |
744 | | /// |
745 | | /// [Clang] unary-type-trait: |
746 | | /// '__is_aggregate' |
747 | | /// '__trivially_copyable' |
748 | | /// |
749 | | /// binary-type-trait: |
750 | | /// [GNU] '__is_base_of' |
751 | | /// [MS] '__is_convertible_to' |
752 | | /// '__is_convertible' |
753 | | /// '__is_same' |
754 | | /// |
755 | | /// [Embarcadero] array-type-trait: |
756 | | /// '__array_rank' |
757 | | /// '__array_extent' |
758 | | /// |
759 | | /// [Embarcadero] expression-trait: |
760 | | /// '__is_lvalue_expr' |
761 | | /// '__is_rvalue_expr' |
762 | | /// \endverbatim |
763 | | /// |
764 | | ExprResult Parser::ParseCastExpression(bool isUnaryExpression, |
765 | | bool isAddressOfOperand, |
766 | | bool &NotCastExpr, |
767 | | TypeCastState isTypeCast, |
768 | 40.5M | bool isVectorLiteral) { |
769 | 40.5M | ExprResult Res; |
770 | 40.5M | tok::TokenKind SavedKind = Tok.getKind(); |
771 | 40.5M | auto SavedType = PreferredType; |
772 | 40.5M | NotCastExpr = false; |
773 | 40.5M | |
774 | 40.5M | // This handles all of cast-expression, unary-expression, postfix-expression, |
775 | 40.5M | // and primary-expression. We handle them together like this for efficiency |
776 | 40.5M | // and to simplify handling of an expression starting with a '(' token: which |
777 | 40.5M | // may be one of a parenthesized expression, cast-expression, compound literal |
778 | 40.5M | // expression, or statement expression. |
779 | 40.5M | // |
780 | 40.5M | // If the parsed tokens consist of a primary-expression, the cases below |
781 | 40.5M | // break out of the switch; at the end we call ParsePostfixExpressionSuffix |
782 | 40.5M | // to handle the postfix expression suffixes. Cases that cannot be followed |
783 | 40.5M | // by postfix exprs should return without invoking |
784 | 40.5M | // ParsePostfixExpressionSuffix. |
785 | 40.5M | switch (SavedKind) { |
786 | 40.5M | case tok::l_paren: { |
787 | 5.87M | // If this expression is limited to being a unary-expression, the parent can |
788 | 5.87M | // not start a cast expression. |
789 | 5.87M | ParenParseOption ParenExprType = |
790 | 5.87M | (isUnaryExpression && !getLangOpts().CPlusPlus302 ) ? CompoundLiteral302 |
791 | 5.87M | : CastExpr5.86M ; |
792 | 5.87M | ParsedType CastTy; |
793 | 5.87M | SourceLocation RParenLoc; |
794 | 5.87M | Res = ParseParenExpression(ParenExprType, false/*stopIfCastExr*/, |
795 | 5.87M | isTypeCast == IsTypeCast, CastTy, RParenLoc); |
796 | 5.87M | |
797 | 5.87M | if (isVectorLiteral) |
798 | 150 | return Res; |
799 | 5.87M | |
800 | 5.87M | switch (ParenExprType) { |
801 | 5.87M | case SimpleExpr: break2.17M ; // Nothing else to do. |
802 | 5.87M | case CompoundStmt: break11.2k ; // Nothing else to do. |
803 | 5.87M | case CompoundLiteral: |
804 | 29.8k | // We parsed '(' type-name ')' '{' ... '}'. If any suffixes of |
805 | 29.8k | // postfix-expression exist, parse them now. |
806 | 29.8k | break; |
807 | 5.87M | case CastExpr: |
808 | 3.64M | // We have parsed the cast-expression and no postfix-expr pieces are |
809 | 3.64M | // following. |
810 | 3.64M | return Res; |
811 | 5.87M | case FoldExpr: |
812 | 116 | // We only parsed a fold-expression. There might be postfix-expr pieces |
813 | 116 | // afterwards; parse them now. |
814 | 116 | break; |
815 | 2.22M | } |
816 | 2.22M | |
817 | 2.22M | break; |
818 | 2.22M | } |
819 | 2.22M | |
820 | 2.22M | // primary-expression |
821 | 6.18M | case tok::numeric_constant: |
822 | 6.18M | // constant: integer-constant |
823 | 6.18M | // constant: floating-constant |
824 | 6.18M | |
825 | 6.18M | Res = Actions.ActOnNumericConstant(Tok, /*UDLScope*/getCurScope()); |
826 | 6.18M | ConsumeToken(); |
827 | 6.18M | break; |
828 | 2.22M | |
829 | 2.22M | case tok::kw_true: |
830 | 575k | case tok::kw_false: |
831 | 575k | Res = ParseCXXBoolLiteral(); |
832 | 575k | break; |
833 | 575k | |
834 | 575k | case tok::kw___objc_yes: |
835 | 164 | case tok::kw___objc_no: |
836 | 164 | return ParseObjCBoolLiteral(); |
837 | 164 | |
838 | 134k | case tok::kw_nullptr: |
839 | 134k | Diag(Tok, diag::warn_cxx98_compat_nullptr); |
840 | 134k | return Actions.ActOnCXXNullPtrLiteral(ConsumeToken()); |
841 | 164 | |
842 | 4.24M | case tok::annot_primary_expr: |
843 | 4.24M | assert(Res.get() == nullptr && "Stray primary-expression annotation?"); |
844 | 4.24M | Res = getExprAnnotation(Tok); |
845 | 4.24M | ConsumeAnnotationToken(); |
846 | 4.24M | if (!Res.isInvalid() && Tok.is(tok::less)4.24M ) |
847 | 76 | checkPotentialAngleBracket(Res); |
848 | 4.24M | break; |
849 | 164 | |
850 | 1.42k | case tok::kw___super: |
851 | 1.42k | case tok::kw_decltype: |
852 | 1.42k | // Annotate the token and tail recurse. |
853 | 1.42k | if (TryAnnotateTypeOrScopeToken()) |
854 | 0 | return ExprError(); |
855 | 1.42k | assert(Tok.isNot(tok::kw_decltype) && Tok.isNot(tok::kw___super)); |
856 | 1.42k | return ParseCastExpression(isUnaryExpression, isAddressOfOperand); |
857 | 1.42k | |
858 | 15.8M | case tok::identifier: { // primary-expression: identifier |
859 | 15.8M | // unqualified-id: identifier |
860 | 15.8M | // constant: enumeration-constant |
861 | 15.8M | // Turn a potentially qualified name into a annot_typename or |
862 | 15.8M | // annot_cxxscope if it would be valid. This handles things like x::y, etc. |
863 | 15.8M | if (getLangOpts().CPlusPlus) { |
864 | 10.0M | // Avoid the unnecessary parse-time lookup in the common case |
865 | 10.0M | // where the syntax forbids a type. |
866 | 10.0M | const Token &Next = NextToken(); |
867 | 10.0M | |
868 | 10.0M | // If this identifier was reverted from a token ID, and the next token |
869 | 10.0M | // is a parenthesis, this is likely to be a use of a type trait. Check |
870 | 10.0M | // those tokens. |
871 | 10.0M | if (Next.is(tok::l_paren) && |
872 | 10.0M | Tok.is(tok::identifier)1.23M && |
873 | 10.0M | Tok.getIdentifierInfo()->hasRevertedTokenIDToIdentifier()1.23M ) { |
874 | 104 | IdentifierInfo *II = Tok.getIdentifierInfo(); |
875 | 104 | // Build up the mapping of revertible type traits, for future use. |
876 | 104 | if (RevertibleTypeTraits.empty()) { |
877 | 153 | #define RTT_JOIN(X,Y) X##Y |
878 | 3 | #define REVERTIBLE_TYPE_TRAIT(Name) \ |
879 | 153 | RevertibleTypeTraits[PP.getIdentifierInfo(#Name)] \ |
880 | 153 | = RTT_JOIN(tok::kw_,Name) |
881 | 3 | |
882 | 3 | REVERTIBLE_TYPE_TRAIT(__is_abstract); |
883 | 3 | REVERTIBLE_TYPE_TRAIT(__is_aggregate); |
884 | 3 | REVERTIBLE_TYPE_TRAIT(__is_arithmetic); |
885 | 3 | REVERTIBLE_TYPE_TRAIT(__is_array); |
886 | 3 | REVERTIBLE_TYPE_TRAIT(__is_assignable); |
887 | 3 | REVERTIBLE_TYPE_TRAIT(__is_base_of); |
888 | 3 | REVERTIBLE_TYPE_TRAIT(__is_class); |
889 | 3 | REVERTIBLE_TYPE_TRAIT(__is_complete_type); |
890 | 3 | REVERTIBLE_TYPE_TRAIT(__is_compound); |
891 | 3 | REVERTIBLE_TYPE_TRAIT(__is_const); |
892 | 3 | REVERTIBLE_TYPE_TRAIT(__is_constructible); |
893 | 3 | REVERTIBLE_TYPE_TRAIT(__is_convertible); |
894 | 3 | REVERTIBLE_TYPE_TRAIT(__is_convertible_to); |
895 | 3 | REVERTIBLE_TYPE_TRAIT(__is_destructible); |
896 | 3 | REVERTIBLE_TYPE_TRAIT(__is_empty); |
897 | 3 | REVERTIBLE_TYPE_TRAIT(__is_enum); |
898 | 3 | REVERTIBLE_TYPE_TRAIT(__is_floating_point); |
899 | 3 | REVERTIBLE_TYPE_TRAIT(__is_final); |
900 | 3 | REVERTIBLE_TYPE_TRAIT(__is_function); |
901 | 3 | REVERTIBLE_TYPE_TRAIT(__is_fundamental); |
902 | 3 | REVERTIBLE_TYPE_TRAIT(__is_integral); |
903 | 3 | REVERTIBLE_TYPE_TRAIT(__is_interface_class); |
904 | 3 | REVERTIBLE_TYPE_TRAIT(__is_literal); |
905 | 3 | REVERTIBLE_TYPE_TRAIT(__is_lvalue_expr); |
906 | 3 | REVERTIBLE_TYPE_TRAIT(__is_lvalue_reference); |
907 | 3 | REVERTIBLE_TYPE_TRAIT(__is_member_function_pointer); |
908 | 3 | REVERTIBLE_TYPE_TRAIT(__is_member_object_pointer); |
909 | 3 | REVERTIBLE_TYPE_TRAIT(__is_member_pointer); |
910 | 3 | REVERTIBLE_TYPE_TRAIT(__is_nothrow_assignable); |
911 | 3 | REVERTIBLE_TYPE_TRAIT(__is_nothrow_constructible); |
912 | 3 | REVERTIBLE_TYPE_TRAIT(__is_nothrow_destructible); |
913 | 3 | REVERTIBLE_TYPE_TRAIT(__is_object); |
914 | 3 | REVERTIBLE_TYPE_TRAIT(__is_pod); |
915 | 3 | REVERTIBLE_TYPE_TRAIT(__is_pointer); |
916 | 3 | REVERTIBLE_TYPE_TRAIT(__is_polymorphic); |
917 | 3 | REVERTIBLE_TYPE_TRAIT(__is_reference); |
918 | 3 | REVERTIBLE_TYPE_TRAIT(__is_rvalue_expr); |
919 | 3 | REVERTIBLE_TYPE_TRAIT(__is_rvalue_reference); |
920 | 3 | REVERTIBLE_TYPE_TRAIT(__is_same); |
921 | 3 | REVERTIBLE_TYPE_TRAIT(__is_scalar); |
922 | 3 | REVERTIBLE_TYPE_TRAIT(__is_sealed); |
923 | 3 | REVERTIBLE_TYPE_TRAIT(__is_signed); |
924 | 3 | REVERTIBLE_TYPE_TRAIT(__is_standard_layout); |
925 | 3 | REVERTIBLE_TYPE_TRAIT(__is_trivial); |
926 | 3 | REVERTIBLE_TYPE_TRAIT(__is_trivially_assignable); |
927 | 3 | REVERTIBLE_TYPE_TRAIT(__is_trivially_constructible); |
928 | 3 | REVERTIBLE_TYPE_TRAIT(__is_trivially_copyable); |
929 | 3 | REVERTIBLE_TYPE_TRAIT(__is_union); |
930 | 3 | REVERTIBLE_TYPE_TRAIT(__is_unsigned); |
931 | 3 | REVERTIBLE_TYPE_TRAIT(__is_void); |
932 | 3 | REVERTIBLE_TYPE_TRAIT(__is_volatile); |
933 | 3 | #undef REVERTIBLE_TYPE_TRAIT |
934 | 3 | #undef RTT_JOIN |
935 | 3 | } |
936 | 104 | |
937 | 104 | // If we find that this is in fact the name of a type trait, |
938 | 104 | // update the token kind in place and parse again to treat it as |
939 | 104 | // the appropriate kind of type trait. |
940 | 104 | llvm::SmallDenseMap<IdentifierInfo *, tok::TokenKind>::iterator Known |
941 | 104 | = RevertibleTypeTraits.find(II); |
942 | 104 | if (Known != RevertibleTypeTraits.end()) { |
943 | 104 | Tok.setKind(Known->second); |
944 | 104 | return ParseCastExpression(isUnaryExpression, isAddressOfOperand, |
945 | 104 | NotCastExpr, isTypeCast); |
946 | 104 | } |
947 | 10.0M | } |
948 | 10.0M | |
949 | 10.0M | if ((!ColonIsSacred && Next.is(tok::colon)9.68M ) || |
950 | 10.0M | Next.isOneOf(tok::coloncolon, tok::less, tok::l_paren, |
951 | 10.0M | tok::l_brace)) { |
952 | 2.55M | // If TryAnnotateTypeOrScopeToken annotates the token, tail recurse. |
953 | 2.55M | if (TryAnnotateTypeOrScopeToken()) |
954 | 22 | return ExprError(); |
955 | 2.55M | if (!Tok.is(tok::identifier)) |
956 | 1.32M | return ParseCastExpression(isUnaryExpression, isAddressOfOperand); |
957 | 14.5M | } |
958 | 10.0M | } |
959 | 14.5M | |
960 | 14.5M | // Consume the identifier so that we can see if it is followed by a '(' or |
961 | 14.5M | // '.'. |
962 | 14.5M | IdentifierInfo &II = *Tok.getIdentifierInfo(); |
963 | 14.5M | SourceLocation ILoc = ConsumeToken(); |
964 | 14.5M | |
965 | 14.5M | // Support 'Class.property' and 'super.property' notation. |
966 | 14.5M | if (getLangOpts().ObjC && Tok.is(tok::period)93.5k && |
967 | 14.5M | (3.48k Actions.getTypeName(II, ILoc, getCurScope())3.48k || |
968 | 3.48k | // Allow the base to be 'super' if in an objc-method. |
969 | 3.48k | (3.30k &II == Ident_super3.30k && getCurScope()->isInObjcMethodScope()79 ))) { |
970 | 256 | ConsumeToken(); |
971 | 256 | |
972 | 256 | if (Tok.is(tok::code_completion) && &II != Ident_super4 ) { |
973 | 3 | Actions.CodeCompleteObjCClassPropertyRefExpr( |
974 | 3 | getCurScope(), II, ILoc, ExprStatementTokLoc == ILoc); |
975 | 3 | cutOffParsing(); |
976 | 3 | return ExprError(); |
977 | 3 | } |
978 | 253 | // Allow either an identifier or the keyword 'class' (in C++). |
979 | 253 | if (Tok.isNot(tok::identifier) && |
980 | 253 | !(2 getLangOpts().CPlusPlus2 && Tok.is(tok::kw_class)1 )) { |
981 | 1 | Diag(Tok, diag::err_expected_property_name); |
982 | 1 | return ExprError(); |
983 | 1 | } |
984 | 252 | IdentifierInfo &PropertyName = *Tok.getIdentifierInfo(); |
985 | 252 | SourceLocation PropertyLoc = ConsumeToken(); |
986 | 252 | |
987 | 252 | Res = Actions.ActOnClassPropertyRefExpr(II, PropertyName, |
988 | 252 | ILoc, PropertyLoc); |
989 | 252 | break; |
990 | 252 | } |
991 | 14.5M | |
992 | 14.5M | // In an Objective-C method, if we have "super" followed by an identifier, |
993 | 14.5M | // the token sequence is ill-formed. However, if there's a ':' or ']' after |
994 | 14.5M | // that identifier, this is probably a message send with a missing open |
995 | 14.5M | // bracket. Treat it as such. |
996 | 14.5M | if (getLangOpts().ObjC && &II == Ident_super93.3k && !InMessageExpression256 && |
997 | 14.5M | getCurScope()->isInObjcMethodScope()34 && |
998 | 14.5M | (31 (31 Tok.is(tok::identifier)31 && |
999 | 31 | (28 NextToken().is(tok::colon)28 || NextToken().is(tok::r_square)2 )) || |
1000 | 31 | Tok.is(tok::code_completion)3 )) { |
1001 | 29 | Res = ParseObjCMessageExpressionBody(SourceLocation(), ILoc, nullptr, |
1002 | 29 | nullptr); |
1003 | 29 | break; |
1004 | 29 | } |
1005 | 14.5M | |
1006 | 14.5M | // If we have an Objective-C class name followed by an identifier |
1007 | 14.5M | // and either ':' or ']', this is an Objective-C class message |
1008 | 14.5M | // send that's missing the opening '['. Recovery |
1009 | 14.5M | // appropriately. Also take this path if we're performing code |
1010 | 14.5M | // completion after an Objective-C class name. |
1011 | 14.5M | if (getLangOpts().ObjC && |
1012 | 14.5M | (93.3k (93.3k Tok.is(tok::identifier)93.3k && !InMessageExpression5.85k ) || |
1013 | 93.3k | Tok.is(tok::code_completion)93.1k )) { |
1014 | 159 | const Token& Next = NextToken(); |
1015 | 159 | if (Tok.is(tok::code_completion) || |
1016 | 159 | Next.is(tok::colon)117 || Next.is(tok::r_square)114 ) |
1017 | 117 | if (ParsedType Typ = Actions.getTypeName(II, ILoc, getCurScope())) |
1018 | 74 | if (Typ.get()->isObjCObjectOrInterfaceType()) { |
1019 | 74 | // Fake up a Declarator to use with ActOnTypeName. |
1020 | 74 | DeclSpec DS(AttrFactory); |
1021 | 74 | DS.SetRangeStart(ILoc); |
1022 | 74 | DS.SetRangeEnd(ILoc); |
1023 | 74 | const char *PrevSpec = nullptr; |
1024 | 74 | unsigned DiagID; |
1025 | 74 | DS.SetTypeSpecType(TST_typename, ILoc, PrevSpec, DiagID, Typ, |
1026 | 74 | Actions.getASTContext().getPrintingPolicy()); |
1027 | 74 | |
1028 | 74 | Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext); |
1029 | 74 | TypeResult Ty = Actions.ActOnTypeName(getCurScope(), |
1030 | 74 | DeclaratorInfo); |
1031 | 74 | if (Ty.isInvalid()) |
1032 | 0 | break; |
1033 | 74 | |
1034 | 74 | Res = ParseObjCMessageExpressionBody(SourceLocation(), |
1035 | 74 | SourceLocation(), |
1036 | 74 | Ty.get(), nullptr); |
1037 | 74 | break; |
1038 | 74 | } |
1039 | 159 | } |
1040 | 14.5M | |
1041 | 14.5M | // Make sure to pass down the right value for isAddressOfOperand. |
1042 | 14.5M | if (isAddressOfOperand && isPostfixExpressionSuffixStart()249k ) |
1043 | 75.4k | isAddressOfOperand = false; |
1044 | 14.5M | |
1045 | 14.5M | // Function designators are allowed to be undeclared (C99 6.5.1p2), so we |
1046 | 14.5M | // need to know whether or not this identifier is a function designator or |
1047 | 14.5M | // not. |
1048 | 14.5M | UnqualifiedId Name; |
1049 | 14.5M | CXXScopeSpec ScopeSpec; |
1050 | 14.5M | SourceLocation TemplateKWLoc; |
1051 | 14.5M | Token Replacement; |
1052 | 14.5M | CastExpressionIdValidator Validator( |
1053 | 14.5M | /*Next=*/Tok, |
1054 | 14.5M | /*AllowTypes=*/isTypeCast != NotTypeCast, |
1055 | 14.5M | /*AllowNonTypes=*/isTypeCast != IsTypeCast); |
1056 | 14.5M | Validator.IsAddressOfOperand = isAddressOfOperand; |
1057 | 14.5M | if (Tok.isOneOf(tok::periodstar, tok::arrowstar)) { |
1058 | 105 | Validator.WantExpressionKeywords = false; |
1059 | 105 | Validator.WantRemainingKeywords = false; |
1060 | 14.5M | } else { |
1061 | 14.5M | Validator.WantRemainingKeywords = Tok.isNot(tok::r_paren); |
1062 | 14.5M | } |
1063 | 14.5M | Name.setIdentifier(&II, ILoc); |
1064 | 14.5M | Res = Actions.ActOnIdExpression( |
1065 | 14.5M | getCurScope(), ScopeSpec, TemplateKWLoc, Name, Tok.is(tok::l_paren), |
1066 | 14.5M | isAddressOfOperand, &Validator, |
1067 | 14.5M | /*IsInlineAsmIdentifier=*/false, |
1068 | 14.5M | Tok.is(tok::r_paren) ? nullptr3.77M : &Replacement10.7M ); |
1069 | 14.5M | if (!Res.isInvalid() && Res.isUnset()14.5M ) { |
1070 | 1 | UnconsumeToken(Replacement); |
1071 | 1 | return ParseCastExpression(isUnaryExpression, isAddressOfOperand, |
1072 | 1 | NotCastExpr, isTypeCast); |
1073 | 1 | } |
1074 | 14.5M | if (!Res.isInvalid() && Tok.is(tok::less)14.5M ) |
1075 | 260k | checkPotentialAngleBracket(Res); |
1076 | 14.5M | break; |
1077 | 14.5M | } |
1078 | 14.5M | case tok::char_constant: // constant: character-constant |
1079 | 77.9k | case tok::wide_char_constant: |
1080 | 77.9k | case tok::utf8_char_constant: |
1081 | 77.9k | case tok::utf16_char_constant: |
1082 | 77.9k | case tok::utf32_char_constant: |
1083 | 77.9k | Res = Actions.ActOnCharacterConstant(Tok, /*UDLScope*/getCurScope()); |
1084 | 77.9k | ConsumeToken(); |
1085 | 77.9k | break; |
1086 | 77.9k | case tok::kw___func__: // primary-expression: __func__ [C99 6.4.2.2] |
1087 | 2.27k | case tok::kw___FUNCTION__: // primary-expression: __FUNCTION__ [GNU] |
1088 | 2.27k | case tok::kw___FUNCDNAME__: // primary-expression: __FUNCDNAME__ [MS] |
1089 | 2.27k | case tok::kw___FUNCSIG__: // primary-expression: __FUNCSIG__ [MS] |
1090 | 2.27k | case tok::kw_L__FUNCTION__: // primary-expression: L__FUNCTION__ [MS] |
1091 | 2.27k | case tok::kw_L__FUNCSIG__: // primary-expression: L__FUNCSIG__ [MS] |
1092 | 2.27k | case tok::kw___PRETTY_FUNCTION__: // primary-expression: __P..Y_F..N__ [GNU] |
1093 | 2.27k | Res = Actions.ActOnPredefinedExpr(Tok.getLocation(), SavedKind); |
1094 | 2.27k | ConsumeToken(); |
1095 | 2.27k | break; |
1096 | 2.63M | case tok::string_literal: // primary-expression: string-literal |
1097 | 2.63M | case tok::wide_string_literal: |
1098 | 2.63M | case tok::utf8_string_literal: |
1099 | 2.63M | case tok::utf16_string_literal: |
1100 | 2.63M | case tok::utf32_string_literal: |
1101 | 2.63M | Res = ParseStringLiteralExpression(true); |
1102 | 2.63M | break; |
1103 | 2.63M | case tok::kw__Generic: // primary-expression: generic-selection [C11 6.5.1] |
1104 | 237 | Res = ParseGenericSelectionExpression(); |
1105 | 237 | break; |
1106 | 2.63M | case tok::kw___builtin_available: |
1107 | 12 | return ParseAvailabilityCheckExpr(Tok.getLocation()); |
1108 | 2.63M | case tok::kw___builtin_va_arg: |
1109 | 19.6k | case tok::kw___builtin_offsetof: |
1110 | 19.6k | case tok::kw___builtin_choose_expr: |
1111 | 19.6k | case tok::kw___builtin_astype: // primary-expression: [OCL] as_type() |
1112 | 19.6k | case tok::kw___builtin_convertvector: |
1113 | 19.6k | case tok::kw___builtin_COLUMN: |
1114 | 19.6k | case tok::kw___builtin_FILE: |
1115 | 19.6k | case tok::kw___builtin_FUNCTION: |
1116 | 19.6k | case tok::kw___builtin_LINE: |
1117 | 19.6k | return ParseBuiltinPrimaryExpression(); |
1118 | 19.6k | case tok::kw___null: |
1119 | 6.96k | return Actions.ActOnGNUNullExpr(ConsumeToken()); |
1120 | 19.6k | |
1121 | 278k | case tok::plusplus: // unary-expression: '++' unary-expression [C99] |
1122 | 278k | case tok::minusminus: { // unary-expression: '--' unary-expression [C99] |
1123 | 278k | // C++ [expr.unary] has: |
1124 | 278k | // unary-expression: |
1125 | 278k | // ++ cast-expression |
1126 | 278k | // -- cast-expression |
1127 | 278k | Token SavedTok = Tok; |
1128 | 278k | ConsumeToken(); |
1129 | 278k | |
1130 | 278k | PreferredType.enterUnary(Actions, Tok.getLocation(), SavedTok.getKind(), |
1131 | 278k | SavedTok.getLocation()); |
1132 | 278k | // One special case is implicitly handled here: if the preceding tokens are |
1133 | 278k | // an ambiguous cast expression, such as "(T())++", then we recurse to |
1134 | 278k | // determine whether the '++' is prefix or postfix. |
1135 | 278k | Res = ParseCastExpression(!getLangOpts().CPlusPlus, |
1136 | 278k | /*isAddressOfOperand*/false, NotCastExpr, |
1137 | 278k | NotTypeCast); |
1138 | 278k | if (NotCastExpr) { |
1139 | 7 | // If we return with NotCastExpr = true, we must not consume any tokens, |
1140 | 7 | // so put the token back where we found it. |
1141 | 7 | assert(Res.isInvalid()); |
1142 | 7 | UnconsumeToken(SavedTok); |
1143 | 7 | return ExprError(); |
1144 | 7 | } |
1145 | 278k | if (!Res.isInvalid()) |
1146 | 278k | Res = Actions.ActOnUnaryOp(getCurScope(), SavedTok.getLocation(), |
1147 | 278k | SavedKind, Res.get()); |
1148 | 278k | return Res; |
1149 | 278k | } |
1150 | 278k | case tok::amp: { // unary-expression: '&' cast-expression |
1151 | 263k | // Special treatment because of member pointers |
1152 | 263k | SourceLocation SavedLoc = ConsumeToken(); |
1153 | 263k | PreferredType.enterUnary(Actions, Tok.getLocation(), tok::amp, SavedLoc); |
1154 | 263k | Res = ParseCastExpression(false, true); |
1155 | 263k | if (!Res.isInvalid()) |
1156 | 263k | Res = Actions.ActOnUnaryOp(getCurScope(), SavedLoc, SavedKind, Res.get()); |
1157 | 263k | return Res; |
1158 | 278k | } |
1159 | 278k | |
1160 | 1.57M | case tok::star: // unary-expression: '*' cast-expression |
1161 | 1.57M | case tok::plus: // unary-expression: '+' cast-expression |
1162 | 1.57M | case tok::minus: // unary-expression: '-' cast-expression |
1163 | 1.57M | case tok::tilde: // unary-expression: '~' cast-expression |
1164 | 1.57M | case tok::exclaim: // unary-expression: '!' cast-expression |
1165 | 1.57M | case tok::kw___real: // unary-expression: '__real' cast-expression [GNU] |
1166 | 1.57M | case tok::kw___imag: { // unary-expression: '__imag' cast-expression [GNU] |
1167 | 1.57M | SourceLocation SavedLoc = ConsumeToken(); |
1168 | 1.57M | PreferredType.enterUnary(Actions, Tok.getLocation(), SavedKind, SavedLoc); |
1169 | 1.57M | Res = ParseCastExpression(false); |
1170 | 1.57M | if (!Res.isInvalid()) |
1171 | 1.57M | Res = Actions.ActOnUnaryOp(getCurScope(), SavedLoc, SavedKind, Res.get()); |
1172 | 1.57M | return Res; |
1173 | 1.57M | } |
1174 | 1.57M | |
1175 | 1.57M | case tok::kw_co_await: { // unary-expression: 'co_await' cast-expression |
1176 | 110 | SourceLocation CoawaitLoc = ConsumeToken(); |
1177 | 110 | Res = ParseCastExpression(false); |
1178 | 110 | if (!Res.isInvalid()) |
1179 | 110 | Res = Actions.ActOnCoawaitExpr(getCurScope(), CoawaitLoc, Res.get()); |
1180 | 110 | return Res; |
1181 | 1.57M | } |
1182 | 1.57M | |
1183 | 1.57M | case tok::kw___extension__:{//unary-expression:'__extension__' cast-expr [GNU] |
1184 | 23.1k | // __extension__ silences extension warnings in the subexpression. |
1185 | 23.1k | ExtensionRAIIObject O(Diags); // Use RAII to do this. |
1186 | 23.1k | SourceLocation SavedLoc = ConsumeToken(); |
1187 | 23.1k | Res = ParseCastExpression(false); |
1188 | 23.1k | if (!Res.isInvalid()) |
1189 | 23.1k | Res = Actions.ActOnUnaryOp(getCurScope(), SavedLoc, SavedKind, Res.get()); |
1190 | 23.1k | return Res; |
1191 | 1.57M | } |
1192 | 1.57M | case tok::kw__Alignof: // unary-expression: '_Alignof' '(' type-name ')' |
1193 | 204 | if (!getLangOpts().C11) |
1194 | 140 | Diag(Tok, diag::ext_c11_alignment) << Tok.getName(); |
1195 | 204 | LLVM_FALLTHROUGH; |
1196 | 217k | case tok::kw_alignof: // unary-expression: 'alignof' '(' type-id ')' |
1197 | 217k | case tok::kw___alignof: // unary-expression: '__alignof' unary-expression |
1198 | 217k | // unary-expression: '__alignof' '(' type-name ')' |
1199 | 217k | case tok::kw_sizeof: // unary-expression: 'sizeof' unary-expression |
1200 | 217k | // unary-expression: 'sizeof' '(' type-name ')' |
1201 | 217k | case tok::kw_vec_step: // unary-expression: OpenCL 'vec_step' expression |
1202 | 217k | // unary-expression: '__builtin_omp_required_simd_align' '(' type-name ')' |
1203 | 217k | case tok::kw___builtin_omp_required_simd_align: |
1204 | 217k | return ParseUnaryExprOrTypeTraitExpression(); |
1205 | 217k | case tok::ampamp: { // unary-expression: '&&' identifier |
1206 | 274 | SourceLocation AmpAmpLoc = ConsumeToken(); |
1207 | 274 | if (Tok.isNot(tok::identifier)) |
1208 | 0 | return ExprError(Diag(Tok, diag::err_expected) << tok::identifier); |
1209 | 274 | |
1210 | 274 | if (getCurScope()->getFnParent() == nullptr) |
1211 | 1 | return ExprError(Diag(Tok, diag::err_address_of_label_outside_fn)); |
1212 | 273 | |
1213 | 273 | Diag(AmpAmpLoc, diag::ext_gnu_address_of_label); |
1214 | 273 | LabelDecl *LD = Actions.LookupOrCreateLabel(Tok.getIdentifierInfo(), |
1215 | 273 | Tok.getLocation()); |
1216 | 273 | Res = Actions.ActOnAddrLabel(AmpAmpLoc, Tok.getLocation(), LD); |
1217 | 273 | ConsumeToken(); |
1218 | 273 | return Res; |
1219 | 273 | } |
1220 | 206k | case tok::kw_const_cast: |
1221 | 206k | case tok::kw_dynamic_cast: |
1222 | 206k | case tok::kw_reinterpret_cast: |
1223 | 206k | case tok::kw_static_cast: |
1224 | 206k | Res = ParseCXXCasts(); |
1225 | 206k | break; |
1226 | 206k | case tok::kw___builtin_bit_cast: |
1227 | 90 | Res = ParseBuiltinBitCast(); |
1228 | 90 | break; |
1229 | 206k | case tok::kw_typeid: |
1230 | 3.33k | Res = ParseCXXTypeid(); |
1231 | 3.33k | break; |
1232 | 206k | case tok::kw___uuidof: |
1233 | 143 | Res = ParseCXXUuidof(); |
1234 | 143 | break; |
1235 | 310k | case tok::kw_this: |
1236 | 310k | Res = ParseCXXThis(); |
1237 | 310k | break; |
1238 | 206k | |
1239 | 328k | case tok::annot_typename: |
1240 | 328k | if (isStartOfObjCClassMessageMissingOpenBracket()) { |
1241 | 81 | ParsedType Type = getTypeAnnotation(Tok); |
1242 | 81 | |
1243 | 81 | // Fake up a Declarator to use with ActOnTypeName. |
1244 | 81 | DeclSpec DS(AttrFactory); |
1245 | 81 | DS.SetRangeStart(Tok.getLocation()); |
1246 | 81 | DS.SetRangeEnd(Tok.getLastLoc()); |
1247 | 81 | |
1248 | 81 | const char *PrevSpec = nullptr; |
1249 | 81 | unsigned DiagID; |
1250 | 81 | DS.SetTypeSpecType(TST_typename, Tok.getAnnotationEndLoc(), |
1251 | 81 | PrevSpec, DiagID, Type, |
1252 | 81 | Actions.getASTContext().getPrintingPolicy()); |
1253 | 81 | |
1254 | 81 | Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext); |
1255 | 81 | TypeResult Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo); |
1256 | 81 | if (Ty.isInvalid()) |
1257 | 0 | break; |
1258 | 81 | |
1259 | 81 | ConsumeAnnotationToken(); |
1260 | 81 | Res = ParseObjCMessageExpressionBody(SourceLocation(), SourceLocation(), |
1261 | 81 | Ty.get(), nullptr); |
1262 | 81 | break; |
1263 | 81 | } |
1264 | 328k | LLVM_FALLTHROUGH; |
1265 | 328k | |
1266 | 350k | case tok::annot_decltype: |
1267 | 350k | case tok::kw_char: |
1268 | 350k | case tok::kw_wchar_t: |
1269 | 350k | case tok::kw_char8_t: |
1270 | 350k | case tok::kw_char16_t: |
1271 | 350k | case tok::kw_char32_t: |
1272 | 350k | case tok::kw_bool: |
1273 | 350k | case tok::kw_short: |
1274 | 350k | case tok::kw_int: |
1275 | 350k | case tok::kw_long: |
1276 | 350k | case tok::kw___int64: |
1277 | 350k | case tok::kw___int128: |
1278 | 350k | case tok::kw_signed: |
1279 | 350k | case tok::kw_unsigned: |
1280 | 350k | case tok::kw_half: |
1281 | 350k | case tok::kw_float: |
1282 | 350k | case tok::kw_double: |
1283 | 350k | case tok::kw__Float16: |
1284 | 350k | case tok::kw___float128: |
1285 | 350k | case tok::kw_void: |
1286 | 350k | case tok::kw_typename: |
1287 | 350k | case tok::kw_typeof: |
1288 | 350k | case tok::kw___vector: |
1289 | 4.20M | #define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t: |
1290 | 4.20M | #include "clang/Basic/OpenCLImageTypes.def"350k |
1291 | 4.20M | { |
1292 | 4.20M | if (!getLangOpts().CPlusPlus350k ) { |
1293 | 129 | Diag(Tok, diag::err_expected_expression); |
1294 | 129 | return ExprError(); |
1295 | 129 | } |
1296 | 350k | |
1297 | 350k | if (SavedKind == tok::kw_typename) { |
1298 | 18.2k | // postfix-expression: typename-specifier '(' expression-list[opt] ')' |
1299 | 18.2k | // typename-specifier braced-init-list |
1300 | 18.2k | if (TryAnnotateTypeOrScopeToken()) |
1301 | 6 | return ExprError(); |
1302 | 18.2k | |
1303 | 18.2k | if (!Actions.isSimpleTypeSpecifier(Tok.getKind())) |
1304 | 0 | // We are trying to parse a simple-type-specifier but might not get such |
1305 | 0 | // a token after error recovery. |
1306 | 0 | return ExprError(); |
1307 | 350k | } |
1308 | 350k | |
1309 | 350k | // postfix-expression: simple-type-specifier '(' expression-list[opt] ')' |
1310 | 350k | // simple-type-specifier braced-init-list |
1311 | 350k | // |
1312 | 350k | DeclSpec DS(AttrFactory); |
1313 | 350k | |
1314 | 350k | ParseCXXSimpleTypeSpecifier(DS); |
1315 | 350k | if (Tok.isNot(tok::l_paren) && |
1316 | 350k | (4.43k !getLangOpts().CPlusPlus114.43k || Tok.isNot(tok::l_brace)4.43k )) |
1317 | 32 | return ExprError(Diag(Tok, diag::err_expected_lparen_after_type) |
1318 | 32 | << DS.getSourceRange()); |
1319 | 350k | |
1320 | 350k | if (Tok.is(tok::l_brace)) |
1321 | 4.40k | Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists); |
1322 | 350k | |
1323 | 350k | Res = ParseCXXTypeConstructExpression(DS); |
1324 | 350k | break; |
1325 | 350k | } |
1326 | 350k | |
1327 | 1.41M | case tok::annot_cxxscope: { // [C++] id-expression: qualified-id |
1328 | 1.41M | // If TryAnnotateTypeOrScopeToken annotates the token, tail recurse. |
1329 | 1.41M | // (We can end up in this situation after tentative parsing.) |
1330 | 1.41M | if (TryAnnotateTypeOrScopeToken()) |
1331 | 0 | return ExprError(); |
1332 | 1.41M | if (!Tok.is(tok::annot_cxxscope)) |
1333 | 4 | return ParseCastExpression(isUnaryExpression, isAddressOfOperand, |
1334 | 4 | NotCastExpr, isTypeCast); |
1335 | 1.41M | |
1336 | 1.41M | Token Next = NextToken(); |
1337 | 1.41M | if (Next.is(tok::annot_template_id)) { |
1338 | 154k | TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Next); |
1339 | 154k | if (TemplateId->Kind == TNK_Type_template) { |
1340 | 0 | // We have a qualified template-id that we know refers to a |
1341 | 0 | // type, translate it into a type and continue parsing as a |
1342 | 0 | // cast expression. |
1343 | 0 | CXXScopeSpec SS; |
1344 | 0 | ParseOptionalCXXScopeSpecifier(SS, nullptr, |
1345 | 0 | /*EnteringContext=*/false); |
1346 | 0 | AnnotateTemplateIdTokenAsType(); |
1347 | 0 | return ParseCastExpression(isUnaryExpression, isAddressOfOperand, |
1348 | 0 | NotCastExpr, isTypeCast); |
1349 | 0 | } |
1350 | 1.41M | } |
1351 | 1.41M | |
1352 | 1.41M | // Parse as an id-expression. |
1353 | 1.41M | Res = ParseCXXIdExpression(isAddressOfOperand); |
1354 | 1.41M | break; |
1355 | 1.41M | } |
1356 | 1.41M | |
1357 | 1.41M | case tok::annot_template_id: { // [C++] template-id |
1358 | 96.2k | TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok); |
1359 | 96.2k | if (TemplateId->Kind == TNK_Type_template) { |
1360 | 40 | // We have a template-id that we know refers to a type, |
1361 | 40 | // translate it into a type and continue parsing as a cast |
1362 | 40 | // expression. |
1363 | 40 | AnnotateTemplateIdTokenAsType(); |
1364 | 40 | return ParseCastExpression(isUnaryExpression, isAddressOfOperand, |
1365 | 40 | NotCastExpr, isTypeCast); |
1366 | 40 | } |
1367 | 96.1k | |
1368 | 96.1k | // Fall through to treat the template-id as an id-expression. |
1369 | 96.1k | LLVM_FALLTHROUGH; |
1370 | 96.1k | } |
1371 | 96.1k | |
1372 | 99.6k | case tok::kw_operator: // [C++] id-expression: operator/conversion-function-id |
1373 | 99.6k | Res = ParseCXXIdExpression(isAddressOfOperand); |
1374 | 99.6k | break; |
1375 | 96.1k | |
1376 | 148k | case tok::coloncolon: { |
1377 | 148k | // ::foo::bar -> global qualified name etc. If TryAnnotateTypeOrScopeToken |
1378 | 148k | // annotates the token, tail recurse. |
1379 | 148k | if (TryAnnotateTypeOrScopeToken()) |
1380 | 4 | return ExprError(); |
1381 | 148k | if (!Tok.is(tok::coloncolon)) |
1382 | 137k | return ParseCastExpression(isUnaryExpression, isAddressOfOperand); |
1383 | 11.8k | |
1384 | 11.8k | // ::new -> [C++] new-expression |
1385 | 11.8k | // ::delete -> [C++] delete-expression |
1386 | 11.8k | SourceLocation CCLoc = ConsumeToken(); |
1387 | 11.8k | if (Tok.is(tok::kw_new)) |
1388 | 11.8k | return ParseCXXNewExpression(true, CCLoc); |
1389 | 45 | if (Tok.is(tok::kw_delete)) |
1390 | 45 | return ParseCXXDeleteExpression(true, CCLoc); |
1391 | 0 | |
1392 | 0 | // This is not a type name or scope specifier, it is an invalid expression. |
1393 | 0 | Diag(CCLoc, diag::err_expected_expression); |
1394 | 0 | return ExprError(); |
1395 | 0 | } |
1396 | 0 |
|
1397 | 11.0k | case tok::kw_new: // [C++] new-expression |
1398 | 11.0k | return ParseCXXNewExpression(false, Tok.getLocation()); |
1399 | 0 |
|
1400 | 5.37k | case tok::kw_delete: // [C++] delete-expression |
1401 | 5.37k | return ParseCXXDeleteExpression(false, Tok.getLocation()); |
1402 | 0 |
|
1403 | 18.3k | case tok::kw_noexcept: { // [C++0x] 'noexcept' '(' expression ')' |
1404 | 18.3k | Diag(Tok, diag::warn_cxx98_compat_noexcept_expr); |
1405 | 18.3k | SourceLocation KeyLoc = ConsumeToken(); |
1406 | 18.3k | BalancedDelimiterTracker T(*this, tok::l_paren); |
1407 | 18.3k | |
1408 | 18.3k | if (T.expectAndConsume(diag::err_expected_lparen_after, "noexcept")) |
1409 | 0 | return ExprError(); |
1410 | 18.3k | // C++11 [expr.unary.noexcept]p1: |
1411 | 18.3k | // The noexcept operator determines whether the evaluation of its operand, |
1412 | 18.3k | // which is an unevaluated operand, can throw an exception. |
1413 | 18.3k | EnterExpressionEvaluationContext Unevaluated( |
1414 | 18.3k | Actions, Sema::ExpressionEvaluationContext::Unevaluated); |
1415 | 18.3k | ExprResult Result = ParseExpression(); |
1416 | 18.3k | |
1417 | 18.3k | T.consumeClose(); |
1418 | 18.3k | |
1419 | 18.3k | if (!Result.isInvalid()) |
1420 | 18.3k | Result = Actions.ActOnNoexceptExpr(KeyLoc, T.getOpenLocation(), |
1421 | 18.3k | Result.get(), T.getCloseLocation()); |
1422 | 18.3k | return Result; |
1423 | 18.3k | } |
1424 | 18.3k | |
1425 | 18.3k | #define TYPE_TRAIT(N,Spelling,K) \ |
1426 | 1.56M | case tok::kw_##Spelling: |
1427 | 24.5k | #include "clang/Basic/TokenKinds.def"18.3k |
1428 | 24.5k | return ParseTypeTrait(); |
1429 | 1.54M | |
1430 | 1.54M | case tok::kw___array_rank: |
1431 | 17 | case tok::kw___array_extent: |
1432 | 17 | return ParseArrayTypeTrait(); |
1433 | 17 | |
1434 | 432 | case tok::kw___is_lvalue_expr: |
1435 | 432 | case tok::kw___is_rvalue_expr: |
1436 | 432 | return ParseExpressionTrait(); |
1437 | 432 | |
1438 | 2.56k | case tok::at: { |
1439 | 2.56k | SourceLocation AtLoc = ConsumeToken(); |
1440 | 2.56k | return ParseObjCAtExpression(AtLoc); |
1441 | 432 | } |
1442 | 2.71k | case tok::caret: |
1443 | 2.71k | Res = ParseBlockLiteralExpression(); |
1444 | 2.71k | break; |
1445 | 432 | case tok::code_completion: { |
1446 | 85 | Actions.CodeCompleteExpression(getCurScope(), |
1447 | 85 | PreferredType.get(Tok.getLocation())); |
1448 | 85 | cutOffParsing(); |
1449 | 85 | return ExprError(); |
1450 | 432 | } |
1451 | 16.3k | case tok::l_square: |
1452 | 16.3k | if (getLangOpts().CPlusPlus11) { |
1453 | 7.13k | if (getLangOpts().ObjC) { |
1454 | 2.03k | // C++11 lambda expressions and Objective-C message sends both start with a |
1455 | 2.03k | // square bracket. There are three possibilities here: |
1456 | 2.03k | // we have a valid lambda expression, we have an invalid lambda |
1457 | 2.03k | // expression, or we have something that doesn't appear to be a lambda. |
1458 | 2.03k | // If we're in the last case, we fall back to ParseObjCMessageExpression. |
1459 | 2.03k | Res = TryParseLambdaExpression(); |
1460 | 2.03k | if (!Res.isInvalid() && !Res.get()2.01k ) |
1461 | 1.86k | Res = ParseObjCMessageExpression(); |
1462 | 2.03k | break; |
1463 | 2.03k | } |
1464 | 5.10k | Res = ParseLambdaExpression(); |
1465 | 5.10k | break; |
1466 | 5.10k | } |
1467 | 9.20k | if (getLangOpts().ObjC) { |
1468 | 9.19k | Res = ParseObjCMessageExpression(); |
1469 | 9.19k | break; |
1470 | 9.19k | } |
1471 | 9 | LLVM_FALLTHROUGH; |
1472 | 8.46k | default: |
1473 | 8.46k | NotCastExpr = true; |
1474 | 8.46k | return ExprError(); |
1475 | 32.8M | } |
1476 | 32.8M | |
1477 | 32.8M | // Check to see whether Res is a function designator only. If it is and we |
1478 | 32.8M | // are compiling for OpenCL, we need to return an error as this implies |
1479 | 32.8M | // that the address of the function is being taken, which is illegal in CL. |
1480 | 32.8M | |
1481 | 32.8M | // These can be followed by postfix-expr pieces. |
1482 | 32.8M | PreferredType = SavedType; |
1483 | 32.8M | Res = ParsePostfixExpressionSuffix(Res); |
1484 | 32.8M | if (getLangOpts().OpenCL) |
1485 | 17.2k | if (Expr *PostfixExpr = Res.get()) { |
1486 | 16.8k | QualType Ty = PostfixExpr->getType(); |
1487 | 16.8k | if (!Ty.isNull() && Ty->isFunctionType()16.7k ) { |
1488 | 6 | Diag(PostfixExpr->getExprLoc(), |
1489 | 6 | diag::err_opencl_taking_function_address_parser); |
1490 | 6 | return ExprError(); |
1491 | 6 | } |
1492 | 32.8M | } |
1493 | 32.8M | |
1494 | 32.8M | return Res; |
1495 | 32.8M | } |
1496 | | |
1497 | | /// Once the leading part of a postfix-expression is parsed, this |
1498 | | /// method parses any suffixes that apply. |
1499 | | /// |
1500 | | /// \verbatim |
1501 | | /// postfix-expression: [C99 6.5.2] |
1502 | | /// primary-expression |
1503 | | /// postfix-expression '[' expression ']' |
1504 | | /// postfix-expression '[' braced-init-list ']' |
1505 | | /// postfix-expression '(' argument-expression-list[opt] ')' |
1506 | | /// postfix-expression '.' identifier |
1507 | | /// postfix-expression '->' identifier |
1508 | | /// postfix-expression '++' |
1509 | | /// postfix-expression '--' |
1510 | | /// '(' type-name ')' '{' initializer-list '}' |
1511 | | /// '(' type-name ')' '{' initializer-list ',' '}' |
1512 | | /// |
1513 | | /// argument-expression-list: [C99 6.5.2] |
1514 | | /// argument-expression ...[opt] |
1515 | | /// argument-expression-list ',' assignment-expression ...[opt] |
1516 | | /// \endverbatim |
1517 | | ExprResult |
1518 | 32.9M | Parser::ParsePostfixExpressionSuffix(ExprResult LHS) { |
1519 | 32.9M | // Now that the primary-expression piece of the postfix-expression has been |
1520 | 32.9M | // parsed, see if there are any postfix-expression pieces here. |
1521 | 32.9M | SourceLocation Loc; |
1522 | 32.9M | auto SavedType = PreferredType; |
1523 | 41.4M | while (1) { |
1524 | 41.4M | // Each iteration relies on preferred type for the whole expression. |
1525 | 41.4M | PreferredType = SavedType; |
1526 | 41.4M | switch (Tok.getKind()) { |
1527 | 41.4M | case tok::code_completion: |
1528 | 66 | if (InMessageExpression) |
1529 | 57 | return LHS; |
1530 | 9 | |
1531 | 9 | Actions.CodeCompletePostfixExpression( |
1532 | 9 | getCurScope(), LHS, PreferredType.get(Tok.getLocation())); |
1533 | 9 | cutOffParsing(); |
1534 | 9 | return ExprError(); |
1535 | 9 | |
1536 | 10.5k | case tok::identifier: |
1537 | 10.5k | // If we see identifier: after an expression, and we're not already in a |
1538 | 10.5k | // message send, then this is probably a message send with a missing |
1539 | 10.5k | // opening bracket '['. |
1540 | 10.5k | if (getLangOpts().ObjC && !InMessageExpression9.54k && |
1541 | 10.5k | (283 NextToken().is(tok::colon)283 || NextToken().is(tok::r_square)197 )) { |
1542 | 173 | LHS = ParseObjCMessageExpressionBody(SourceLocation(), SourceLocation(), |
1543 | 173 | nullptr, LHS.get()); |
1544 | 173 | break; |
1545 | 173 | } |
1546 | 10.3k | // Fall through; this isn't a message send. |
1547 | 10.3k | LLVM_FALLTHROUGH; |
1548 | 10.3k | |
1549 | 32.9M | default: // Not a postfix-expression suffix. |
1550 | 32.9M | return LHS; |
1551 | 674k | case tok::l_square: { // postfix-expression: p-e '[' expression ']' |
1552 | 674k | // If we have a array postfix expression that starts on a new line and |
1553 | 674k | // Objective-C is enabled, it is highly likely that the user forgot a |
1554 | 674k | // semicolon after the base expression and that the array postfix-expr is |
1555 | 674k | // actually another message send. In this case, do some look-ahead to see |
1556 | 674k | // if the contents of the square brackets are obviously not a valid |
1557 | 674k | // expression and recover by pretending there is no suffix. |
1558 | 674k | if (getLangOpts().ObjC && Tok.isAtStartOfLine()2.07k && |
1559 | 674k | isSimpleObjCMessageExpression()5 ) |
1560 | 4 | return LHS; |
1561 | 674k | |
1562 | 674k | // Reject array indices starting with a lambda-expression. '[[' is |
1563 | 674k | // reserved for attributes. |
1564 | 674k | if (CheckProhibitedCXX11Attribute()) { |
1565 | 2 | (void)Actions.CorrectDelayedTyposInExpr(LHS); |
1566 | 2 | return ExprError(); |
1567 | 2 | } |
1568 | 674k | |
1569 | 674k | BalancedDelimiterTracker T(*this, tok::l_square); |
1570 | 674k | T.consumeOpen(); |
1571 | 674k | Loc = T.getOpenLocation(); |
1572 | 674k | ExprResult Idx, Length; |
1573 | 674k | SourceLocation ColonLoc; |
1574 | 674k | PreferredType.enterSubscript(Actions, Tok.getLocation(), LHS.get()); |
1575 | 674k | if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)295k ) { |
1576 | 2 | Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists); |
1577 | 2 | Idx = ParseBraceInitializer(); |
1578 | 674k | } else if (getLangOpts().OpenMP) { |
1579 | 69.3k | ColonProtectionRAIIObject RAII(*this); |
1580 | 69.3k | // Parse [: or [ expr or [ expr : |
1581 | 69.3k | if (!Tok.is(tok::colon)) { |
1582 | 67.4k | // [ expr |
1583 | 67.4k | Idx = ParseExpression(); |
1584 | 67.4k | } |
1585 | 69.3k | if (Tok.is(tok::colon)) { |
1586 | 3.46k | // Consume ':' |
1587 | 3.46k | ColonLoc = ConsumeToken(); |
1588 | 3.46k | if (Tok.isNot(tok::r_square)) |
1589 | 2.67k | Length = ParseExpression(); |
1590 | 3.46k | } |
1591 | 69.3k | } else |
1592 | 605k | Idx = ParseExpression(); |
1593 | 674k | |
1594 | 674k | SourceLocation RLoc = Tok.getLocation(); |
1595 | 674k | |
1596 | 674k | LHS = Actions.CorrectDelayedTyposInExpr(LHS); |
1597 | 674k | Idx = Actions.CorrectDelayedTyposInExpr(Idx); |
1598 | 674k | Length = Actions.CorrectDelayedTyposInExpr(Length); |
1599 | 674k | if (!LHS.isInvalid() && !Idx.isInvalid()674k && !Length.isInvalid()674k && |
1600 | 674k | Tok.is(tok::r_square)674k ) { |
1601 | 674k | if (ColonLoc.isValid()) { |
1602 | 3.30k | LHS = Actions.ActOnOMPArraySectionExpr(LHS.get(), Loc, Idx.get(), |
1603 | 3.30k | ColonLoc, Length.get(), RLoc); |
1604 | 671k | } else { |
1605 | 671k | LHS = Actions.ActOnArraySubscriptExpr(getCurScope(), LHS.get(), Loc, |
1606 | 671k | Idx.get(), RLoc); |
1607 | 671k | } |
1608 | 674k | } else { |
1609 | 262 | LHS = ExprError(); |
1610 | 262 | Idx = ExprError(); |
1611 | 262 | } |
1612 | 674k | |
1613 | 674k | // Match the ']'. |
1614 | 674k | T.consumeClose(); |
1615 | 674k | break; |
1616 | 674k | } |
1617 | 674k | |
1618 | 5.49M | case tok::l_paren: // p-e: p-e '(' argument-expression-list[opt] ')' |
1619 | 5.49M | case tok::lesslessless: { // p-e: p-e '<<<' argument-expression-list '>>>' |
1620 | 5.49M | // '(' argument-expression-list[opt] ')' |
1621 | 5.49M | tok::TokenKind OpKind = Tok.getKind(); |
1622 | 5.49M | InMessageExpressionRAIIObject InMessage(*this, false); |
1623 | 5.49M | |
1624 | 5.49M | Expr *ExecConfig = nullptr; |
1625 | 5.49M | |
1626 | 5.49M | BalancedDelimiterTracker PT(*this, tok::l_paren); |
1627 | 5.49M | |
1628 | 5.49M | if (OpKind == tok::lesslessless) { |
1629 | 52 | ExprVector ExecConfigExprs; |
1630 | 52 | CommaLocsTy ExecConfigCommaLocs; |
1631 | 52 | SourceLocation OpenLoc = ConsumeToken(); |
1632 | 52 | |
1633 | 52 | if (ParseSimpleExpressionList(ExecConfigExprs, ExecConfigCommaLocs)) { |
1634 | 1 | (void)Actions.CorrectDelayedTyposInExpr(LHS); |
1635 | 1 | LHS = ExprError(); |
1636 | 1 | } |
1637 | 52 | |
1638 | 52 | SourceLocation CloseLoc; |
1639 | 52 | if (TryConsumeToken(tok::greatergreatergreater, CloseLoc)) { |
1640 | 51 | } else if (1 LHS.isInvalid()1 ) { |
1641 | 0 | SkipUntil(tok::greatergreatergreater, StopAtSemi); |
1642 | 1 | } else { |
1643 | 1 | // There was an error closing the brackets |
1644 | 1 | Diag(Tok, diag::err_expected) << tok::greatergreatergreater; |
1645 | 1 | Diag(OpenLoc, diag::note_matching) << tok::lesslessless; |
1646 | 1 | SkipUntil(tok::greatergreatergreater, StopAtSemi); |
1647 | 1 | LHS = ExprError(); |
1648 | 1 | } |
1649 | 52 | |
1650 | 52 | if (!LHS.isInvalid()) { |
1651 | 43 | if (ExpectAndConsume(tok::l_paren)) |
1652 | 1 | LHS = ExprError(); |
1653 | 42 | else |
1654 | 42 | Loc = PrevTokLocation; |
1655 | 43 | } |
1656 | 52 | |
1657 | 52 | if (!LHS.isInvalid()) { |
1658 | 42 | ExprResult ECResult = Actions.ActOnCUDAExecConfigExpr(getCurScope(), |
1659 | 42 | OpenLoc, |
1660 | 42 | ExecConfigExprs, |
1661 | 42 | CloseLoc); |
1662 | 42 | if (ECResult.isInvalid()) |
1663 | 2 | LHS = ExprError(); |
1664 | 40 | else |
1665 | 40 | ExecConfig = ECResult.get(); |
1666 | 42 | } |
1667 | 5.49M | } else { |
1668 | 5.49M | PT.consumeOpen(); |
1669 | 5.49M | Loc = PT.getOpenLocation(); |
1670 | 5.49M | } |
1671 | 5.49M | |
1672 | 5.49M | ExprVector ArgExprs; |
1673 | 5.49M | CommaLocsTy CommaLocs; |
1674 | 5.49M | auto RunSignatureHelp = [&]() -> QualType { |
1675 | 163 | QualType PreferredType = Actions.ProduceCallSignatureHelp( |
1676 | 163 | getCurScope(), LHS.get(), ArgExprs, PT.getOpenLocation()); |
1677 | 163 | CalledSignatureHelp = true; |
1678 | 163 | return PreferredType; |
1679 | 163 | }; |
1680 | 5.49M | if (OpKind == tok::l_paren || !LHS.isInvalid()52 ) { |
1681 | 5.49M | if (Tok.isNot(tok::r_paren)) { |
1682 | 9.38M | if (ParseExpressionList(ArgExprs, CommaLocs, [&] 3.97M { |
1683 | 9.38M | PreferredType.enterFunctionArgument(Tok.getLocation(), |
1684 | 9.38M | RunSignatureHelp); |
1685 | 9.38M | })) { |
1686 | 3.87k | (void)Actions.CorrectDelayedTyposInExpr(LHS); |
1687 | 3.87k | // If we got an error when parsing expression list, we don't call |
1688 | 3.87k | // the CodeCompleteCall handler inside the parser. So call it here |
1689 | 3.87k | // to make sure we get overload suggestions even when we are in the |
1690 | 3.87k | // middle of a parameter. |
1691 | 3.87k | if (PP.isCodeCompletionReached() && !CalledSignatureHelp163 ) |
1692 | 3 | RunSignatureHelp(); |
1693 | 3.87k | LHS = ExprError(); |
1694 | 3.97M | } else if (LHS.isInvalid()) { |
1695 | 121 | for (auto &E : ArgExprs) |
1696 | 138 | Actions.CorrectDelayedTyposInExpr(E); |
1697 | 121 | } |
1698 | 3.97M | } |
1699 | 5.49M | } |
1700 | 5.49M | |
1701 | 5.49M | // Match the ')'. |
1702 | 5.49M | if (LHS.isInvalid()) { |
1703 | 4.27k | SkipUntil(tok::r_paren, StopAtSemi); |
1704 | 5.49M | } else if (Tok.isNot(tok::r_paren)) { |
1705 | 745 | bool HadDelayedTypo = false; |
1706 | 745 | if (Actions.CorrectDelayedTyposInExpr(LHS).get() != LHS.get()) |
1707 | 0 | HadDelayedTypo = true; |
1708 | 745 | for (auto &E : ArgExprs) |
1709 | 745 | if (Actions.CorrectDelayedTyposInExpr(E).get() != E) |
1710 | 11 | HadDelayedTypo = true; |
1711 | 745 | // If there were delayed typos in the LHS or ArgExprs, call SkipUntil |
1712 | 745 | // instead of PT.consumeClose() to avoid emitting extra diagnostics for |
1713 | 745 | // the unmatched l_paren. |
1714 | 745 | if (HadDelayedTypo) |
1715 | 11 | SkipUntil(tok::r_paren, StopAtSemi); |
1716 | 734 | else |
1717 | 734 | PT.consumeClose(); |
1718 | 745 | LHS = ExprError(); |
1719 | 5.49M | } else { |
1720 | 5.49M | assert((ArgExprs.size() == 0 || |
1721 | 5.49M | ArgExprs.size()-1 == CommaLocs.size())&& |
1722 | 5.49M | "Unexpected number of commas!"); |
1723 | 5.49M | LHS = Actions.ActOnCallExpr(getCurScope(), LHS.get(), Loc, |
1724 | 5.49M | ArgExprs, Tok.getLocation(), |
1725 | 5.49M | ExecConfig); |
1726 | 5.49M | PT.consumeClose(); |
1727 | 5.49M | } |
1728 | 5.49M | |
1729 | 5.49M | break; |
1730 | 5.49M | } |
1731 | 5.49M | case tok::arrow: |
1732 | 2.21M | case tok::period: { |
1733 | 2.21M | // postfix-expression: p-e '->' template[opt] id-expression |
1734 | 2.21M | // postfix-expression: p-e '.' template[opt] id-expression |
1735 | 2.21M | tok::TokenKind OpKind = Tok.getKind(); |
1736 | 2.21M | SourceLocation OpLoc = ConsumeToken(); // Eat the "." or "->" token. |
1737 | 2.21M | |
1738 | 2.21M | CXXScopeSpec SS; |
1739 | 2.21M | ParsedType ObjectType; |
1740 | 2.21M | bool MayBePseudoDestructor = false; |
1741 | 2.21M | Expr* OrigLHS = !LHS.isInvalid() ? LHS.get()2.21M : nullptr113 ; |
1742 | 2.21M | |
1743 | 2.21M | PreferredType.enterMemAccess(Actions, Tok.getLocation(), OrigLHS); |
1744 | 2.21M | |
1745 | 2.21M | if (getLangOpts().CPlusPlus && !LHS.isInvalid()1.86M ) { |
1746 | 1.86M | Expr *Base = OrigLHS; |
1747 | 1.86M | const Type* BaseType = Base->getType().getTypePtrOrNull(); |
1748 | 1.86M | if (BaseType && Tok.is(tok::l_paren)1.86M && |
1749 | 1.86M | (13 BaseType->isFunctionType()13 || |
1750 | 13 | BaseType->isSpecificPlaceholderType(BuiltinType::BoundMember)8 )) { |
1751 | 10 | Diag(OpLoc, diag::err_function_is_not_record) |
1752 | 10 | << OpKind << Base->getSourceRange() |
1753 | 10 | << FixItHint::CreateRemoval(OpLoc); |
1754 | 10 | return ParsePostfixExpressionSuffix(Base); |
1755 | 10 | } |
1756 | 1.86M | |
1757 | 1.86M | LHS = Actions.ActOnStartCXXMemberReference(getCurScope(), Base, |
1758 | 1.86M | OpLoc, OpKind, ObjectType, |
1759 | 1.86M | MayBePseudoDestructor); |
1760 | 1.86M | if (LHS.isInvalid()) |
1761 | 76 | break; |
1762 | 1.86M | |
1763 | 1.86M | ParseOptionalCXXScopeSpecifier(SS, ObjectType, |
1764 | 1.86M | /*EnteringContext=*/false, |
1765 | 1.86M | &MayBePseudoDestructor); |
1766 | 1.86M | if (SS.isNotEmpty()) |
1767 | 585 | ObjectType = nullptr; |
1768 | 1.86M | } |
1769 | 2.21M | |
1770 | 2.21M | if (2.21M Tok.is(tok::code_completion)2.21M ) { |
1771 | 118 | tok::TokenKind CorrectedOpKind = |
1772 | 118 | OpKind == tok::arrow ? tok::period35 : tok::arrow83 ; |
1773 | 118 | ExprResult CorrectedLHS(/*Invalid=*/true); |
1774 | 118 | if (getLangOpts().CPlusPlus && OrigLHS72 ) { |
1775 | 71 | const bool DiagsAreSuppressed = Diags.getSuppressAllDiagnostics(); |
1776 | 71 | Diags.setSuppressAllDiagnostics(true); |
1777 | 71 | CorrectedLHS = Actions.ActOnStartCXXMemberReference( |
1778 | 71 | getCurScope(), OrigLHS, OpLoc, CorrectedOpKind, ObjectType, |
1779 | 71 | MayBePseudoDestructor); |
1780 | 71 | Diags.setSuppressAllDiagnostics(DiagsAreSuppressed); |
1781 | 71 | } |
1782 | 118 | |
1783 | 118 | Expr *Base = LHS.get(); |
1784 | 118 | Expr *CorrectedBase = CorrectedLHS.get(); |
1785 | 118 | if (!CorrectedBase && !getLangOpts().CPlusPlus47 ) |
1786 | 46 | CorrectedBase = Base; |
1787 | 118 | |
1788 | 118 | // Code completion for a member access expression. |
1789 | 118 | Actions.CodeCompleteMemberReferenceExpr( |
1790 | 118 | getCurScope(), Base, CorrectedBase, OpLoc, OpKind == tok::arrow, |
1791 | 118 | Base && ExprStatementTokLoc == Base->getBeginLoc()117 , |
1792 | 118 | PreferredType.get(Tok.getLocation())); |
1793 | 118 | |
1794 | 118 | cutOffParsing(); |
1795 | 118 | return ExprError(); |
1796 | 118 | } |
1797 | 2.21M | |
1798 | 2.21M | if (MayBePseudoDestructor && !LHS.isInvalid()6.02k ) { |
1799 | 6.02k | LHS = ParseCXXPseudoDestructor(LHS.get(), OpLoc, OpKind, SS, |
1800 | 6.02k | ObjectType); |
1801 | 6.02k | break; |
1802 | 6.02k | } |
1803 | 2.20M | |
1804 | 2.20M | // Either the action has told us that this cannot be a |
1805 | 2.20M | // pseudo-destructor expression (based on the type of base |
1806 | 2.20M | // expression), or we didn't see a '~' in the right place. We |
1807 | 2.20M | // can still parse a destructor name here, but in that case it |
1808 | 2.20M | // names a real destructor. |
1809 | 2.20M | // Allow explicit constructor calls in Microsoft mode. |
1810 | 2.20M | // FIXME: Add support for explicit call of template constructor. |
1811 | 2.20M | SourceLocation TemplateKWLoc; |
1812 | 2.20M | UnqualifiedId Name; |
1813 | 2.20M | if (getLangOpts().ObjC && OpKind == tok::period8.39k && |
1814 | 2.20M | Tok.is(tok::kw_class)6.17k ) { |
1815 | 2 | // Objective-C++: |
1816 | 2 | // After a '.' in a member access expression, treat the keyword |
1817 | 2 | // 'class' as if it were an identifier. |
1818 | 2 | // |
1819 | 2 | // This hack allows property access to the 'class' method because it is |
1820 | 2 | // such a common method name. For other C++ keywords that are |
1821 | 2 | // Objective-C method names, one must use the message send syntax. |
1822 | 2 | IdentifierInfo *Id = Tok.getIdentifierInfo(); |
1823 | 2 | SourceLocation Loc = ConsumeToken(); |
1824 | 2 | Name.setIdentifier(Id, Loc); |
1825 | 2.20M | } else if (ParseUnqualifiedId(SS, |
1826 | 2.20M | /*EnteringContext=*/false, |
1827 | 2.20M | /*AllowDestructorName=*/true, |
1828 | 2.20M | /*AllowConstructorName=*/ |
1829 | 2.20M | getLangOpts().MicrosoftExt && |
1830 | 2.20M | SS.isNotEmpty()2.01k , |
1831 | 2.20M | /*AllowDeductionGuide=*/false, |
1832 | 2.20M | ObjectType, &TemplateKWLoc, Name)) { |
1833 | 291 | (void)Actions.CorrectDelayedTyposInExpr(LHS); |
1834 | 291 | LHS = ExprError(); |
1835 | 291 | } |
1836 | 2.20M | |
1837 | 2.20M | if (!LHS.isInvalid()) |
1838 | 2.20M | LHS = Actions.ActOnMemberAccessExpr(getCurScope(), LHS.get(), OpLoc, |
1839 | 2.20M | OpKind, SS, TemplateKWLoc, Name, |
1840 | 2.20M | CurParsedObjCImpl ? CurParsedObjCImpl->Dcl1.51k |
1841 | 2.20M | : nullptr2.20M ); |
1842 | 2.20M | if (!LHS.isInvalid() && Tok.is(tok::less)2.20M ) |
1843 | 6.82k | checkPotentialAngleBracket(LHS); |
1844 | 2.20M | break; |
1845 | 2.20M | } |
1846 | 2.20M | case tok::plusplus: // postfix-expression: postfix-expression '++' |
1847 | 149k | case tok::minusminus: // postfix-expression: postfix-expression '--' |
1848 | 149k | if (!LHS.isInvalid()) { |
1849 | 149k | LHS = Actions.ActOnPostfixUnaryOp(getCurScope(), Tok.getLocation(), |
1850 | 149k | Tok.getKind(), LHS.get()); |
1851 | 149k | } |
1852 | 149k | ConsumeToken(); |
1853 | 149k | break; |
1854 | 41.4M | } |
1855 | 41.4M | } |
1856 | 32.9M | } |
1857 | | |
1858 | | /// ParseExprAfterUnaryExprOrTypeTrait - We parsed a typeof/sizeof/alignof/ |
1859 | | /// vec_step and we are at the start of an expression or a parenthesized |
1860 | | /// type-id. OpTok is the operand token (typeof/sizeof/alignof). Returns the |
1861 | | /// expression (isCastExpr == false) or the type (isCastExpr == true). |
1862 | | /// |
1863 | | /// \verbatim |
1864 | | /// unary-expression: [C99 6.5.3] |
1865 | | /// 'sizeof' unary-expression |
1866 | | /// 'sizeof' '(' type-name ')' |
1867 | | /// [GNU] '__alignof' unary-expression |
1868 | | /// [GNU] '__alignof' '(' type-name ')' |
1869 | | /// [C11] '_Alignof' '(' type-name ')' |
1870 | | /// [C++0x] 'alignof' '(' type-id ')' |
1871 | | /// |
1872 | | /// [GNU] typeof-specifier: |
1873 | | /// typeof ( expressions ) |
1874 | | /// typeof ( type-name ) |
1875 | | /// [GNU/C++] typeof unary-expression |
1876 | | /// |
1877 | | /// [OpenCL 1.1 6.11.12] vec_step built-in function: |
1878 | | /// vec_step ( expressions ) |
1879 | | /// vec_step ( type-name ) |
1880 | | /// \endverbatim |
1881 | | ExprResult |
1882 | | Parser::ParseExprAfterUnaryExprOrTypeTrait(const Token &OpTok, |
1883 | | bool &isCastExpr, |
1884 | | ParsedType &CastTy, |
1885 | 183k | SourceRange &CastRange) { |
1886 | 183k | |
1887 | 183k | assert(OpTok.isOneOf(tok::kw_typeof, tok::kw_sizeof, tok::kw___alignof, |
1888 | 183k | tok::kw_alignof, tok::kw__Alignof, tok::kw_vec_step, |
1889 | 183k | tok::kw___builtin_omp_required_simd_align) && |
1890 | 183k | "Not a typeof/sizeof/alignof/vec_step expression!"); |
1891 | 183k | |
1892 | 183k | ExprResult Operand; |
1893 | 183k | |
1894 | 183k | // If the operand doesn't start with an '(', it must be an expression. |
1895 | 183k | if (Tok.isNot(tok::l_paren)) { |
1896 | 489 | // If construct allows a form without parenthesis, user may forget to put |
1897 | 489 | // pathenthesis around type name. |
1898 | 489 | if (OpTok.isOneOf(tok::kw_sizeof, tok::kw___alignof, tok::kw_alignof, |
1899 | 489 | tok::kw__Alignof)) { |
1900 | 483 | if (isTypeIdUnambiguously()) { |
1901 | 7 | DeclSpec DS(AttrFactory); |
1902 | 7 | ParseSpecifierQualifierList(DS); |
1903 | 7 | Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext); |
1904 | 7 | ParseDeclarator(DeclaratorInfo); |
1905 | 7 | |
1906 | 7 | SourceLocation LParenLoc = PP.getLocForEndOfToken(OpTok.getLocation()); |
1907 | 7 | SourceLocation RParenLoc = PP.getLocForEndOfToken(PrevTokLocation); |
1908 | 7 | Diag(LParenLoc, diag::err_expected_parentheses_around_typename) |
1909 | 7 | << OpTok.getName() |
1910 | 7 | << FixItHint::CreateInsertion(LParenLoc, "(") |
1911 | 7 | << FixItHint::CreateInsertion(RParenLoc, ")"); |
1912 | 7 | isCastExpr = true; |
1913 | 7 | return ExprEmpty(); |
1914 | 7 | } |
1915 | 482 | } |
1916 | 482 | |
1917 | 482 | isCastExpr = false; |
1918 | 482 | if (OpTok.is(tok::kw_typeof) && !getLangOpts().CPlusPlus6 ) { |
1919 | 0 | Diag(Tok, diag::err_expected_after) << OpTok.getIdentifierInfo() |
1920 | 0 | << tok::l_paren; |
1921 | 0 | return ExprError(); |
1922 | 0 | } |
1923 | 482 | |
1924 | 482 | Operand = ParseCastExpression(true/*isUnaryExpression*/); |
1925 | 183k | } else { |
1926 | 183k | // If it starts with a '(', we know that it is either a parenthesized |
1927 | 183k | // type-name, or it is a unary-expression that starts with a compound |
1928 | 183k | // literal, or starts with a primary-expression that is a parenthesized |
1929 | 183k | // expression. |
1930 | 183k | ParenParseOption ExprType = CastExpr; |
1931 | 183k | SourceLocation LParenLoc = Tok.getLocation(), RParenLoc; |
1932 | 183k | |
1933 | 183k | Operand = ParseParenExpression(ExprType, true/*stopIfCastExpr*/, |
1934 | 183k | false, CastTy, RParenLoc); |
1935 | 183k | CastRange = SourceRange(LParenLoc, RParenLoc); |
1936 | 183k | |
1937 | 183k | // If ParseParenExpression parsed a '(typename)' sequence only, then this is |
1938 | 183k | // a type. |
1939 | 183k | if (ExprType == CastExpr) { |
1940 | 126k | isCastExpr = true; |
1941 | 126k | return ExprEmpty(); |
1942 | 126k | } |
1943 | 56.2k | |
1944 | 56.2k | if (getLangOpts().CPlusPlus || OpTok.isNot(tok::kw_typeof)3.34k ) { |
1945 | 55.2k | // GNU typeof in C requires the expression to be parenthesized. Not so for |
1946 | 55.2k | // sizeof/alignof or in C++. Therefore, the parenthesized expression is |
1947 | 55.2k | // the start of a unary-expression, but doesn't include any postfix |
1948 | 55.2k | // pieces. Parse these now if present. |
1949 | 55.2k | if (!Operand.isInvalid()) |
1950 | 55.2k | Operand = ParsePostfixExpressionSuffix(Operand.get()); |
1951 | 55.2k | } |
1952 | 56.2k | } |
1953 | 183k | |
1954 | 183k | // If we get here, the operand to the typeof/sizeof/alignof was an expression. |
1955 | 183k | isCastExpr = false; |
1956 | 56.7k | return Operand; |
1957 | 183k | } |
1958 | | |
1959 | | |
1960 | | /// Parse a sizeof or alignof expression. |
1961 | | /// |
1962 | | /// \verbatim |
1963 | | /// unary-expression: [C99 6.5.3] |
1964 | | /// 'sizeof' unary-expression |
1965 | | /// 'sizeof' '(' type-name ')' |
1966 | | /// [C++11] 'sizeof' '...' '(' identifier ')' |
1967 | | /// [GNU] '__alignof' unary-expression |
1968 | | /// [GNU] '__alignof' '(' type-name ')' |
1969 | | /// [C11] '_Alignof' '(' type-name ')' |
1970 | | /// [C++11] 'alignof' '(' type-id ')' |
1971 | | /// \endverbatim |
1972 | 217k | ExprResult Parser::ParseUnaryExprOrTypeTraitExpression() { |
1973 | 217k | assert(Tok.isOneOf(tok::kw_sizeof, tok::kw___alignof, tok::kw_alignof, |
1974 | 217k | tok::kw__Alignof, tok::kw_vec_step, |
1975 | 217k | tok::kw___builtin_omp_required_simd_align) && |
1976 | 217k | "Not a sizeof/alignof/vec_step expression!"); |
1977 | 217k | Token OpTok = Tok; |
1978 | 217k | ConsumeToken(); |
1979 | 217k | |
1980 | 217k | // [C++11] 'sizeof' '...' '(' identifier ')' |
1981 | 217k | if (Tok.is(tok::ellipsis) && OpTok.is(tok::kw_sizeof)36.6k ) { |
1982 | 36.6k | SourceLocation EllipsisLoc = ConsumeToken(); |
1983 | 36.6k | SourceLocation LParenLoc, RParenLoc; |
1984 | 36.6k | IdentifierInfo *Name = nullptr; |
1985 | 36.6k | SourceLocation NameLoc; |
1986 | 36.6k | if (Tok.is(tok::l_paren)) { |
1987 | 36.6k | BalancedDelimiterTracker T(*this, tok::l_paren); |
1988 | 36.6k | T.consumeOpen(); |
1989 | 36.6k | LParenLoc = T.getOpenLocation(); |
1990 | 36.6k | if (Tok.is(tok::identifier)) { |
1991 | 36.6k | Name = Tok.getIdentifierInfo(); |
1992 | 36.6k | NameLoc = ConsumeToken(); |
1993 | 36.6k | T.consumeClose(); |
1994 | 36.6k | RParenLoc = T.getCloseLocation(); |
1995 | 36.6k | if (RParenLoc.isInvalid()) |
1996 | 0 | RParenLoc = PP.getLocForEndOfToken(NameLoc); |
1997 | 36.6k | } else { |
1998 | 0 | Diag(Tok, diag::err_expected_parameter_pack); |
1999 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2000 | 0 | } |
2001 | 36.6k | } else if (1 Tok.is(tok::identifier)1 ) { |
2002 | 1 | Name = Tok.getIdentifierInfo(); |
2003 | 1 | NameLoc = ConsumeToken(); |
2004 | 1 | LParenLoc = PP.getLocForEndOfToken(EllipsisLoc); |
2005 | 1 | RParenLoc = PP.getLocForEndOfToken(NameLoc); |
2006 | 1 | Diag(LParenLoc, diag::err_paren_sizeof_parameter_pack) |
2007 | 1 | << Name |
2008 | 1 | << FixItHint::CreateInsertion(LParenLoc, "(") |
2009 | 1 | << FixItHint::CreateInsertion(RParenLoc, ")"); |
2010 | 1 | } else { |
2011 | 0 | Diag(Tok, diag::err_sizeof_parameter_pack); |
2012 | 0 | } |
2013 | 36.6k | |
2014 | 36.6k | if (!Name) |
2015 | 0 | return ExprError(); |
2016 | 36.6k | |
2017 | 36.6k | EnterExpressionEvaluationContext Unevaluated( |
2018 | 36.6k | Actions, Sema::ExpressionEvaluationContext::Unevaluated, |
2019 | 36.6k | Sema::ReuseLambdaContextDecl); |
2020 | 36.6k | |
2021 | 36.6k | return Actions.ActOnSizeofParameterPackExpr(getCurScope(), |
2022 | 36.6k | OpTok.getLocation(), |
2023 | 36.6k | *Name, NameLoc, |
2024 | 36.6k | RParenLoc); |
2025 | 36.6k | } |
2026 | 180k | |
2027 | 180k | if (OpTok.isOneOf(tok::kw_alignof, tok::kw__Alignof)) |
2028 | 4.29k | Diag(OpTok, diag::warn_cxx98_compat_alignof); |
2029 | 180k | |
2030 | 180k | EnterExpressionEvaluationContext Unevaluated( |
2031 | 180k | Actions, Sema::ExpressionEvaluationContext::Unevaluated, |
2032 | 180k | Sema::ReuseLambdaContextDecl); |
2033 | 180k | |
2034 | 180k | bool isCastExpr; |
2035 | 180k | ParsedType CastTy; |
2036 | 180k | SourceRange CastRange; |
2037 | 180k | ExprResult Operand = ParseExprAfterUnaryExprOrTypeTrait(OpTok, |
2038 | 180k | isCastExpr, |
2039 | 180k | CastTy, |
2040 | 180k | CastRange); |
2041 | 180k | |
2042 | 180k | UnaryExprOrTypeTrait ExprKind = UETT_SizeOf; |
2043 | 180k | if (OpTok.isOneOf(tok::kw_alignof, tok::kw__Alignof)) |
2044 | 4.29k | ExprKind = UETT_AlignOf; |
2045 | 176k | else if (OpTok.is(tok::kw___alignof)) |
2046 | 3.29k | ExprKind = UETT_PreferredAlignOf; |
2047 | 173k | else if (OpTok.is(tok::kw_vec_step)) |
2048 | 42 | ExprKind = UETT_VecStep; |
2049 | 172k | else if (OpTok.is(tok::kw___builtin_omp_required_simd_align)) |
2050 | 29 | ExprKind = UETT_OpenMPRequiredSimdAlign; |
2051 | 180k | |
2052 | 180k | if (isCastExpr) |
2053 | 126k | return Actions.ActOnUnaryExprOrTypeTraitExpr(OpTok.getLocation(), |
2054 | 126k | ExprKind, |
2055 | 126k | /*IsType=*/true, |
2056 | 126k | CastTy.getAsOpaquePtr(), |
2057 | 126k | CastRange); |
2058 | 53.8k | |
2059 | 53.8k | if (OpTok.isOneOf(tok::kw_alignof, tok::kw__Alignof)) |
2060 | 23 | Diag(OpTok, diag::ext_alignof_expr) << OpTok.getIdentifierInfo(); |
2061 | 53.8k | |
2062 | 53.8k | // If we get here, the operand to the sizeof/alignof was an expression. |
2063 | 53.8k | if (!Operand.isInvalid()) |
2064 | 53.8k | Operand = Actions.ActOnUnaryExprOrTypeTraitExpr(OpTok.getLocation(), |
2065 | 53.8k | ExprKind, |
2066 | 53.8k | /*IsType=*/false, |
2067 | 53.8k | Operand.get(), |
2068 | 53.8k | CastRange); |
2069 | 53.8k | return Operand; |
2070 | 53.8k | } |
2071 | | |
2072 | | /// ParseBuiltinPrimaryExpression |
2073 | | /// |
2074 | | /// \verbatim |
2075 | | /// primary-expression: [C99 6.5.1] |
2076 | | /// [GNU] '__builtin_va_arg' '(' assignment-expression ',' type-name ')' |
2077 | | /// [GNU] '__builtin_offsetof' '(' type-name ',' offsetof-member-designator')' |
2078 | | /// [GNU] '__builtin_choose_expr' '(' assign-expr ',' assign-expr ',' |
2079 | | /// assign-expr ')' |
2080 | | /// [GNU] '__builtin_types_compatible_p' '(' type-name ',' type-name ')' |
2081 | | /// [GNU] '__builtin_FILE' '(' ')' |
2082 | | /// [GNU] '__builtin_FUNCTION' '(' ')' |
2083 | | /// [GNU] '__builtin_LINE' '(' ')' |
2084 | | /// [CLANG] '__builtin_COLUMN' '(' ')' |
2085 | | /// [OCL] '__builtin_astype' '(' assignment-expression ',' type-name ')' |
2086 | | /// |
2087 | | /// [GNU] offsetof-member-designator: |
2088 | | /// [GNU] identifier |
2089 | | /// [GNU] offsetof-member-designator '.' identifier |
2090 | | /// [GNU] offsetof-member-designator '[' expression ']' |
2091 | | /// \endverbatim |
2092 | 19.6k | ExprResult Parser::ParseBuiltinPrimaryExpression() { |
2093 | 19.6k | ExprResult Res; |
2094 | 19.6k | const IdentifierInfo *BuiltinII = Tok.getIdentifierInfo(); |
2095 | 19.6k | |
2096 | 19.6k | tok::TokenKind T = Tok.getKind(); |
2097 | 19.6k | SourceLocation StartLoc = ConsumeToken(); // Eat the builtin identifier. |
2098 | 19.6k | |
2099 | 19.6k | // All of these start with an open paren. |
2100 | 19.6k | if (Tok.isNot(tok::l_paren)) |
2101 | 0 | return ExprError(Diag(Tok, diag::err_expected_after) << BuiltinII |
2102 | 0 | << tok::l_paren); |
2103 | 19.6k | |
2104 | 19.6k | BalancedDelimiterTracker PT(*this, tok::l_paren); |
2105 | 19.6k | PT.consumeOpen(); |
2106 | 19.6k | |
2107 | 19.6k | // TODO: Build AST. |
2108 | 19.6k | |
2109 | 19.6k | switch (T) { |
2110 | 19.6k | default: 0 llvm_unreachable0 ("Not a builtin primary expression!"); |
2111 | 19.6k | case tok::kw___builtin_va_arg: { |
2112 | 1.48k | ExprResult Expr(ParseAssignmentExpression()); |
2113 | 1.48k | |
2114 | 1.48k | if (ExpectAndConsume(tok::comma)) { |
2115 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2116 | 0 | Expr = ExprError(); |
2117 | 0 | } |
2118 | 1.48k | |
2119 | 1.48k | TypeResult Ty = ParseTypeName(); |
2120 | 1.48k | |
2121 | 1.48k | if (Tok.isNot(tok::r_paren)) { |
2122 | 0 | Diag(Tok, diag::err_expected) << tok::r_paren; |
2123 | 0 | Expr = ExprError(); |
2124 | 0 | } |
2125 | 1.48k | |
2126 | 1.48k | if (Expr.isInvalid() || Ty.isInvalid()) |
2127 | 0 | Res = ExprError(); |
2128 | 1.48k | else |
2129 | 1.48k | Res = Actions.ActOnVAArg(StartLoc, Expr.get(), Ty.get(), ConsumeParen()); |
2130 | 1.48k | break; |
2131 | 19.6k | } |
2132 | 19.6k | case tok::kw___builtin_offsetof: { |
2133 | 3.83k | SourceLocation TypeLoc = Tok.getLocation(); |
2134 | 3.83k | TypeResult Ty = ParseTypeName(); |
2135 | 3.83k | if (Ty.isInvalid()) { |
2136 | 1 | SkipUntil(tok::r_paren, StopAtSemi); |
2137 | 1 | return ExprError(); |
2138 | 1 | } |
2139 | 3.83k | |
2140 | 3.83k | if (ExpectAndConsume(tok::comma)) { |
2141 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2142 | 0 | return ExprError(); |
2143 | 0 | } |
2144 | 3.83k | |
2145 | 3.83k | // We must have at least one identifier here. |
2146 | 3.83k | if (Tok.isNot(tok::identifier)) { |
2147 | 0 | Diag(Tok, diag::err_expected) << tok::identifier; |
2148 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2149 | 0 | return ExprError(); |
2150 | 0 | } |
2151 | 3.83k | |
2152 | 3.83k | // Keep track of the various subcomponents we see. |
2153 | 3.83k | SmallVector<Sema::OffsetOfComponent, 4> Comps; |
2154 | 3.83k | |
2155 | 3.83k | Comps.push_back(Sema::OffsetOfComponent()); |
2156 | 3.83k | Comps.back().isBrackets = false; |
2157 | 3.83k | Comps.back().U.IdentInfo = Tok.getIdentifierInfo(); |
2158 | 3.83k | Comps.back().LocStart = Comps.back().LocEnd = ConsumeToken(); |
2159 | 3.83k | |
2160 | 3.83k | // FIXME: This loop leaks the index expressions on error. |
2161 | 3.89k | while (1) { |
2162 | 3.89k | if (Tok.is(tok::period)) { |
2163 | 19 | // offsetof-member-designator: offsetof-member-designator '.' identifier |
2164 | 19 | Comps.push_back(Sema::OffsetOfComponent()); |
2165 | 19 | Comps.back().isBrackets = false; |
2166 | 19 | Comps.back().LocStart = ConsumeToken(); |
2167 | 19 | |
2168 | 19 | if (Tok.isNot(tok::identifier)) { |
2169 | 0 | Diag(Tok, diag::err_expected) << tok::identifier; |
2170 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2171 | 0 | return ExprError(); |
2172 | 0 | } |
2173 | 19 | Comps.back().U.IdentInfo = Tok.getIdentifierInfo(); |
2174 | 19 | Comps.back().LocEnd = ConsumeToken(); |
2175 | 19 | |
2176 | 3.87k | } else if (Tok.is(tok::l_square)) { |
2177 | 42 | if (CheckProhibitedCXX11Attribute()) |
2178 | 0 | return ExprError(); |
2179 | 42 | |
2180 | 42 | // offsetof-member-designator: offsetof-member-design '[' expression ']' |
2181 | 42 | Comps.push_back(Sema::OffsetOfComponent()); |
2182 | 42 | Comps.back().isBrackets = true; |
2183 | 42 | BalancedDelimiterTracker ST(*this, tok::l_square); |
2184 | 42 | ST.consumeOpen(); |
2185 | 42 | Comps.back().LocStart = ST.getOpenLocation(); |
2186 | 42 | Res = ParseExpression(); |
2187 | 42 | if (Res.isInvalid()) { |
2188 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2189 | 0 | return Res; |
2190 | 0 | } |
2191 | 42 | Comps.back().U.E = Res.get(); |
2192 | 42 | |
2193 | 42 | ST.consumeClose(); |
2194 | 42 | Comps.back().LocEnd = ST.getCloseLocation(); |
2195 | 3.83k | } else { |
2196 | 3.83k | if (Tok.isNot(tok::r_paren)) { |
2197 | 2 | PT.consumeClose(); |
2198 | 2 | Res = ExprError(); |
2199 | 3.83k | } else if (Ty.isInvalid()) { |
2200 | 0 | Res = ExprError(); |
2201 | 3.83k | } else { |
2202 | 3.83k | PT.consumeClose(); |
2203 | 3.83k | Res = Actions.ActOnBuiltinOffsetOf(getCurScope(), StartLoc, TypeLoc, |
2204 | 3.83k | Ty.get(), Comps, |
2205 | 3.83k | PT.getCloseLocation()); |
2206 | 3.83k | } |
2207 | 3.83k | break; |
2208 | 3.83k | } |
2209 | 3.89k | } |
2210 | 3.83k | break; |
2211 | 3.83k | } |
2212 | 3.83k | case tok::kw___builtin_choose_expr: { |
2213 | 48 | ExprResult Cond(ParseAssignmentExpression()); |
2214 | 48 | if (Cond.isInvalid()) { |
2215 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2216 | 0 | return Cond; |
2217 | 0 | } |
2218 | 48 | if (ExpectAndConsume(tok::comma)) { |
2219 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2220 | 0 | return ExprError(); |
2221 | 0 | } |
2222 | 48 | |
2223 | 48 | ExprResult Expr1(ParseAssignmentExpression()); |
2224 | 48 | if (Expr1.isInvalid()) { |
2225 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2226 | 0 | return Expr1; |
2227 | 0 | } |
2228 | 48 | if (ExpectAndConsume(tok::comma)) { |
2229 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2230 | 0 | return ExprError(); |
2231 | 0 | } |
2232 | 48 | |
2233 | 48 | ExprResult Expr2(ParseAssignmentExpression()); |
2234 | 48 | if (Expr2.isInvalid()) { |
2235 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2236 | 0 | return Expr2; |
2237 | 0 | } |
2238 | 48 | if (Tok.isNot(tok::r_paren)) { |
2239 | 0 | Diag(Tok, diag::err_expected) << tok::r_paren; |
2240 | 0 | return ExprError(); |
2241 | 0 | } |
2242 | 48 | Res = Actions.ActOnChooseExpr(StartLoc, Cond.get(), Expr1.get(), |
2243 | 48 | Expr2.get(), ConsumeParen()); |
2244 | 48 | break; |
2245 | 48 | } |
2246 | 48 | case tok::kw___builtin_astype: { |
2247 | 30 | // The first argument is an expression to be converted, followed by a comma. |
2248 | 30 | ExprResult Expr(ParseAssignmentExpression()); |
2249 | 30 | if (Expr.isInvalid()) { |
2250 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2251 | 0 | return ExprError(); |
2252 | 0 | } |
2253 | 30 | |
2254 | 30 | if (ExpectAndConsume(tok::comma)) { |
2255 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2256 | 0 | return ExprError(); |
2257 | 0 | } |
2258 | 30 | |
2259 | 30 | // Second argument is the type to bitcast to. |
2260 | 30 | TypeResult DestTy = ParseTypeName(); |
2261 | 30 | if (DestTy.isInvalid()) |
2262 | 0 | return ExprError(); |
2263 | 30 | |
2264 | 30 | // Attempt to consume the r-paren. |
2265 | 30 | if (Tok.isNot(tok::r_paren)) { |
2266 | 0 | Diag(Tok, diag::err_expected) << tok::r_paren; |
2267 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2268 | 0 | return ExprError(); |
2269 | 0 | } |
2270 | 30 | |
2271 | 30 | Res = Actions.ActOnAsTypeExpr(Expr.get(), DestTy.get(), StartLoc, |
2272 | 30 | ConsumeParen()); |
2273 | 30 | break; |
2274 | 30 | } |
2275 | 14.1k | case tok::kw___builtin_convertvector: { |
2276 | 14.1k | // The first argument is an expression to be converted, followed by a comma. |
2277 | 14.1k | ExprResult Expr(ParseAssignmentExpression()); |
2278 | 14.1k | if (Expr.isInvalid()) { |
2279 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2280 | 0 | return ExprError(); |
2281 | 0 | } |
2282 | 14.1k | |
2283 | 14.1k | if (ExpectAndConsume(tok::comma)) { |
2284 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2285 | 0 | return ExprError(); |
2286 | 0 | } |
2287 | 14.1k | |
2288 | 14.1k | // Second argument is the type to bitcast to. |
2289 | 14.1k | TypeResult DestTy = ParseTypeName(); |
2290 | 14.1k | if (DestTy.isInvalid()) |
2291 | 0 | return ExprError(); |
2292 | 14.1k | |
2293 | 14.1k | // Attempt to consume the r-paren. |
2294 | 14.1k | if (Tok.isNot(tok::r_paren)) { |
2295 | 0 | Diag(Tok, diag::err_expected) << tok::r_paren; |
2296 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2297 | 0 | return ExprError(); |
2298 | 0 | } |
2299 | 14.1k | |
2300 | 14.1k | Res = Actions.ActOnConvertVectorExpr(Expr.get(), DestTy.get(), StartLoc, |
2301 | 14.1k | ConsumeParen()); |
2302 | 14.1k | break; |
2303 | 14.1k | } |
2304 | 14.1k | case tok::kw___builtin_COLUMN: |
2305 | 107 | case tok::kw___builtin_FILE: |
2306 | 107 | case tok::kw___builtin_FUNCTION: |
2307 | 107 | case tok::kw___builtin_LINE: { |
2308 | 107 | // Attempt to consume the r-paren. |
2309 | 107 | if (Tok.isNot(tok::r_paren)) { |
2310 | 8 | Diag(Tok, diag::err_expected) << tok::r_paren; |
2311 | 8 | SkipUntil(tok::r_paren, StopAtSemi); |
2312 | 8 | return ExprError(); |
2313 | 8 | } |
2314 | 99 | SourceLocExpr::IdentKind Kind = [&] { |
2315 | 99 | switch (T) { |
2316 | 99 | case tok::kw___builtin_FILE: |
2317 | 17 | return SourceLocExpr::File; |
2318 | 99 | case tok::kw___builtin_FUNCTION: |
2319 | 19 | return SourceLocExpr::Function; |
2320 | 99 | case tok::kw___builtin_LINE: |
2321 | 50 | return SourceLocExpr::Line; |
2322 | 99 | case tok::kw___builtin_COLUMN: |
2323 | 13 | return SourceLocExpr::Column; |
2324 | 99 | default: |
2325 | 0 | llvm_unreachable("invalid keyword"); |
2326 | 99 | } |
2327 | 99 | }(); |
2328 | 99 | Res = Actions.ActOnSourceLocExpr(Kind, StartLoc, ConsumeParen()); |
2329 | 99 | break; |
2330 | 99 | } |
2331 | 19.6k | } |
2332 | 19.6k | |
2333 | 19.6k | if (Res.isInvalid()) |
2334 | 33 | return ExprError(); |
2335 | 19.5k | |
2336 | 19.5k | // These can be followed by postfix-expr pieces because they are |
2337 | 19.5k | // primary-expressions. |
2338 | 19.5k | return ParsePostfixExpressionSuffix(Res.get()); |
2339 | 19.5k | } |
2340 | | |
2341 | | /// ParseParenExpression - This parses the unit that starts with a '(' token, |
2342 | | /// based on what is allowed by ExprType. The actual thing parsed is returned |
2343 | | /// in ExprType. If stopIfCastExpr is true, it will only return the parsed type, |
2344 | | /// not the parsed cast-expression. |
2345 | | /// |
2346 | | /// \verbatim |
2347 | | /// primary-expression: [C99 6.5.1] |
2348 | | /// '(' expression ')' |
2349 | | /// [GNU] '(' compound-statement ')' (if !ParenExprOnly) |
2350 | | /// postfix-expression: [C99 6.5.2] |
2351 | | /// '(' type-name ')' '{' initializer-list '}' |
2352 | | /// '(' type-name ')' '{' initializer-list ',' '}' |
2353 | | /// cast-expression: [C99 6.5.4] |
2354 | | /// '(' type-name ')' cast-expression |
2355 | | /// [ARC] bridged-cast-expression |
2356 | | /// [ARC] bridged-cast-expression: |
2357 | | /// (__bridge type-name) cast-expression |
2358 | | /// (__bridge_transfer type-name) cast-expression |
2359 | | /// (__bridge_retained type-name) cast-expression |
2360 | | /// fold-expression: [C++1z] |
2361 | | /// '(' cast-expression fold-operator '...' ')' |
2362 | | /// '(' '...' fold-operator cast-expression ')' |
2363 | | /// '(' cast-expression fold-operator '...' |
2364 | | /// fold-operator cast-expression ')' |
2365 | | /// \endverbatim |
2366 | | ExprResult |
2367 | | Parser::ParseParenExpression(ParenParseOption &ExprType, bool stopIfCastExpr, |
2368 | | bool isTypeCast, ParsedType &CastTy, |
2369 | 6.05M | SourceLocation &RParenLoc) { |
2370 | 6.05M | assert(Tok.is(tok::l_paren) && "Not a paren expr!"); |
2371 | 6.05M | ColonProtectionRAIIObject ColonProtection(*this, false); |
2372 | 6.05M | BalancedDelimiterTracker T(*this, tok::l_paren); |
2373 | 6.05M | if (T.consumeOpen()) |
2374 | 0 | return ExprError(); |
2375 | 6.05M | SourceLocation OpenLoc = T.getOpenLocation(); |
2376 | 6.05M | |
2377 | 6.05M | PreferredType.enterParenExpr(Tok.getLocation(), OpenLoc); |
2378 | 6.05M | |
2379 | 6.05M | ExprResult Result(true); |
2380 | 6.05M | bool isAmbiguousTypeId; |
2381 | 6.05M | CastTy = nullptr; |
2382 | 6.05M | |
2383 | 6.05M | if (Tok.is(tok::code_completion)) { |
2384 | 30 | Actions.CodeCompleteExpression( |
2385 | 30 | getCurScope(), PreferredType.get(Tok.getLocation()), |
2386 | 30 | /*IsParenthesized=*/ExprType >= CompoundLiteral); |
2387 | 30 | cutOffParsing(); |
2388 | 30 | return ExprError(); |
2389 | 30 | } |
2390 | 6.05M | |
2391 | 6.05M | // Diagnose use of bridge casts in non-arc mode. |
2392 | 6.05M | bool BridgeCast = (getLangOpts().ObjC && |
2393 | 6.05M | Tok.isOneOf(tok::kw___bridge, |
2394 | 52.8k | tok::kw___bridge_transfer, |
2395 | 52.8k | tok::kw___bridge_retained, |
2396 | 52.8k | tok::kw___bridge_retain)); |
2397 | 6.05M | if (BridgeCast && !getLangOpts().ObjCAutoRefCount343 ) { |
2398 | 19 | if (!TryConsumeToken(tok::kw___bridge)) { |
2399 | 8 | StringRef BridgeCastName = Tok.getName(); |
2400 | 8 | SourceLocation BridgeKeywordLoc = ConsumeToken(); |
2401 | 8 | if (!PP.getSourceManager().isInSystemHeader(BridgeKeywordLoc)) |
2402 | 8 | Diag(BridgeKeywordLoc, diag::warn_arc_bridge_cast_nonarc) |
2403 | 8 | << BridgeCastName |
2404 | 8 | << FixItHint::CreateReplacement(BridgeKeywordLoc, ""); |
2405 | 8 | } |
2406 | 19 | BridgeCast = false; |
2407 | 19 | } |
2408 | 6.05M | |
2409 | 6.05M | // None of these cases should fall through with an invalid Result |
2410 | 6.05M | // unless they've already reported an error. |
2411 | 6.05M | if (ExprType >= CompoundStmt && Tok.is(tok::l_brace)) { |
2412 | 11.2k | Diag(Tok, diag::ext_gnu_statement_expr); |
2413 | 11.2k | |
2414 | 11.2k | if (!getCurScope()->getFnParent() && !getCurScope()->getBlockParent()2 ) { |
2415 | 2 | Result = ExprError(Diag(OpenLoc, diag::err_stmtexpr_file_scope)); |
2416 | 11.2k | } else { |
2417 | 11.2k | // Find the nearest non-record decl context. Variables declared in a |
2418 | 11.2k | // statement expression behave as if they were declared in the enclosing |
2419 | 11.2k | // function, block, or other code construct. |
2420 | 11.2k | DeclContext *CodeDC = Actions.CurContext; |
2421 | 11.2k | while (CodeDC->isRecord() || isa<EnumDecl>(CodeDC)11.2k ) { |
2422 | 3 | CodeDC = CodeDC->getParent(); |
2423 | 3 | assert(CodeDC && !CodeDC->isFileContext() && |
2424 | 3 | "statement expr not in code context"); |
2425 | 3 | } |
2426 | 11.2k | Sema::ContextRAII SavedContext(Actions, CodeDC, /*NewThisContext=*/false); |
2427 | 11.2k | |
2428 | 11.2k | Actions.ActOnStartStmtExpr(); |
2429 | 11.2k | |
2430 | 11.2k | StmtResult Stmt(ParseCompoundStatement(true)); |
2431 | 11.2k | ExprType = CompoundStmt; |
2432 | 11.2k | |
2433 | 11.2k | // If the substmt parsed correctly, build the AST node. |
2434 | 11.2k | if (!Stmt.isInvalid()) { |
2435 | 11.2k | Result = Actions.ActOnStmtExpr(OpenLoc, Stmt.get(), Tok.getLocation()); |
2436 | 11.2k | } else { |
2437 | 0 | Actions.ActOnStmtExprError(); |
2438 | 0 | } |
2439 | 11.2k | } |
2440 | 6.04M | } else if (ExprType >= CompoundLiteral && BridgeCast) { |
2441 | 324 | tok::TokenKind tokenKind = Tok.getKind(); |
2442 | 324 | SourceLocation BridgeKeywordLoc = ConsumeToken(); |
2443 | 324 | |
2444 | 324 | // Parse an Objective-C ARC ownership cast expression. |
2445 | 324 | ObjCBridgeCastKind Kind; |
2446 | 324 | if (tokenKind == tok::kw___bridge) |
2447 | 119 | Kind = OBC_Bridge; |
2448 | 205 | else if (tokenKind == tok::kw___bridge_transfer) |
2449 | 104 | Kind = OBC_BridgeTransfer; |
2450 | 101 | else if (tokenKind == tok::kw___bridge_retained) |
2451 | 97 | Kind = OBC_BridgeRetained; |
2452 | 4 | else { |
2453 | 4 | // As a hopefully temporary workaround, allow __bridge_retain as |
2454 | 4 | // a synonym for __bridge_retained, but only in system headers. |
2455 | 4 | assert(tokenKind == tok::kw___bridge_retain); |
2456 | 4 | Kind = OBC_BridgeRetained; |
2457 | 4 | if (!PP.getSourceManager().isInSystemHeader(BridgeKeywordLoc)) |
2458 | 2 | Diag(BridgeKeywordLoc, diag::err_arc_bridge_retain) |
2459 | 2 | << FixItHint::CreateReplacement(BridgeKeywordLoc, |
2460 | 2 | "__bridge_retained"); |
2461 | 4 | } |
2462 | 324 | |
2463 | 324 | TypeResult Ty = ParseTypeName(); |
2464 | 324 | T.consumeClose(); |
2465 | 324 | ColonProtection.restore(); |
2466 | 324 | RParenLoc = T.getCloseLocation(); |
2467 | 324 | |
2468 | 324 | PreferredType.enterTypeCast(Tok.getLocation(), Ty.get().get()); |
2469 | 324 | ExprResult SubExpr = ParseCastExpression(/*isUnaryExpression=*/false); |
2470 | 324 | |
2471 | 324 | if (Ty.isInvalid() || SubExpr.isInvalid()) |
2472 | 0 | return ExprError(); |
2473 | 324 | |
2474 | 324 | return Actions.ActOnObjCBridgedCast(getCurScope(), OpenLoc, Kind, |
2475 | 324 | BridgeKeywordLoc, Ty.get(), |
2476 | 324 | RParenLoc, SubExpr.get()); |
2477 | 6.04M | } else if (ExprType >= CompoundLiteral && |
2478 | 6.04M | isTypeIdInParens(isAmbiguousTypeId)) { |
2479 | 3.80M | |
2480 | 3.80M | // Otherwise, this is a compound literal expression or cast expression. |
2481 | 3.80M | |
2482 | 3.80M | // In C++, if the type-id is ambiguous we disambiguate based on context. |
2483 | 3.80M | // If stopIfCastExpr is true the context is a typeof/sizeof/alignof |
2484 | 3.80M | // in which case we should treat it as type-id. |
2485 | 3.80M | // if stopIfCastExpr is false, we need to determine the context past the |
2486 | 3.80M | // parens, so we defer to ParseCXXAmbiguousParenExpression for that. |
2487 | 3.80M | if (isAmbiguousTypeId && !stopIfCastExpr1.10k ) { |
2488 | 1.02k | ExprResult res = ParseCXXAmbiguousParenExpression(ExprType, CastTy, T, |
2489 | 1.02k | ColonProtection); |
2490 | 1.02k | RParenLoc = T.getCloseLocation(); |
2491 | 1.02k | return res; |
2492 | 1.02k | } |
2493 | 3.80M | |
2494 | 3.80M | // Parse the type declarator. |
2495 | 3.80M | DeclSpec DS(AttrFactory); |
2496 | 3.80M | ParseSpecifierQualifierList(DS); |
2497 | 3.80M | Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext); |
2498 | 3.80M | ParseDeclarator(DeclaratorInfo); |
2499 | 3.80M | |
2500 | 3.80M | // If our type is followed by an identifier and either ':' or ']', then |
2501 | 3.80M | // this is probably an Objective-C message send where the leading '[' is |
2502 | 3.80M | // missing. Recover as if that were the case. |
2503 | 3.80M | if (!DeclaratorInfo.isInvalidType() && Tok.is(tok::identifier)3.80M && |
2504 | 3.80M | !InMessageExpression77 && getLangOpts().ObjC77 && |
2505 | 3.80M | (75 NextToken().is(tok::colon)75 || NextToken().is(tok::r_square)0 )) { |
2506 | 75 | TypeResult Ty; |
2507 | 75 | { |
2508 | 75 | InMessageExpressionRAIIObject InMessage(*this, false); |
2509 | 75 | Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo); |
2510 | 75 | } |
2511 | 75 | Result = ParseObjCMessageExpressionBody(SourceLocation(), |
2512 | 75 | SourceLocation(), |
2513 | 75 | Ty.get(), nullptr); |
2514 | 3.80M | } else { |
2515 | 3.80M | // Match the ')'. |
2516 | 3.80M | T.consumeClose(); |
2517 | 3.80M | ColonProtection.restore(); |
2518 | 3.80M | RParenLoc = T.getCloseLocation(); |
2519 | 3.80M | if (Tok.is(tok::l_brace)) { |
2520 | 29.8k | ExprType = CompoundLiteral; |
2521 | 29.8k | TypeResult Ty; |
2522 | 29.8k | { |
2523 | 29.8k | InMessageExpressionRAIIObject InMessage(*this, false); |
2524 | 29.8k | Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo); |
2525 | 29.8k | } |
2526 | 29.8k | return ParseCompoundLiteralExpression(Ty.get(), OpenLoc, RParenLoc); |
2527 | 29.8k | } |
2528 | 3.77M | |
2529 | 3.77M | if (Tok.is(tok::l_paren)) { |
2530 | 635k | // This could be OpenCL vector Literals |
2531 | 635k | if (getLangOpts().OpenCL) |
2532 | 380 | { |
2533 | 380 | TypeResult Ty; |
2534 | 380 | { |
2535 | 380 | InMessageExpressionRAIIObject InMessage(*this, false); |
2536 | 380 | Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo); |
2537 | 380 | } |
2538 | 380 | if(Ty.isInvalid()) |
2539 | 0 | { |
2540 | 0 | return ExprError(); |
2541 | 0 | } |
2542 | 380 | QualType QT = Ty.get().get().getCanonicalType(); |
2543 | 380 | if (QT->isVectorType()) |
2544 | 150 | { |
2545 | 150 | // We parsed '(' vector-type-name ')' followed by '(' |
2546 | 150 | |
2547 | 150 | // Parse the cast-expression that follows it next. |
2548 | 150 | // isVectorLiteral = true will make sure we don't parse any |
2549 | 150 | // Postfix expression yet |
2550 | 150 | Result = ParseCastExpression(/*isUnaryExpression=*/false, |
2551 | 150 | /*isAddressOfOperand=*/false, |
2552 | 150 | /*isTypeCast=*/IsTypeCast, |
2553 | 150 | /*isVectorLiteral=*/true); |
2554 | 150 | |
2555 | 150 | if (!Result.isInvalid()) { |
2556 | 150 | Result = Actions.ActOnCastExpr(getCurScope(), OpenLoc, |
2557 | 150 | DeclaratorInfo, CastTy, |
2558 | 150 | RParenLoc, Result.get()); |
2559 | 150 | } |
2560 | 150 | |
2561 | 150 | // After we performed the cast we can check for postfix-expr pieces. |
2562 | 150 | if (!Result.isInvalid()) { |
2563 | 147 | Result = ParsePostfixExpressionSuffix(Result); |
2564 | 147 | } |
2565 | 150 | |
2566 | 150 | return Result; |
2567 | 150 | } |
2568 | 3.77M | } |
2569 | 635k | } |
2570 | 3.77M | |
2571 | 3.77M | if (ExprType == CastExpr) { |
2572 | 3.77M | // We parsed '(' type-name ')' and the thing after it wasn't a '{'. |
2573 | 3.77M | |
2574 | 3.77M | if (DeclaratorInfo.isInvalidType()) |
2575 | 99 | return ExprError(); |
2576 | 3.77M | |
2577 | 3.77M | // Note that this doesn't parse the subsequent cast-expression, it just |
2578 | 3.77M | // returns the parsed type to the callee. |
2579 | 3.77M | if (stopIfCastExpr) { |
2580 | 126k | TypeResult Ty; |
2581 | 126k | { |
2582 | 126k | InMessageExpressionRAIIObject InMessage(*this, false); |
2583 | 126k | Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo); |
2584 | 126k | } |
2585 | 126k | CastTy = Ty.get(); |
2586 | 126k | return ExprResult(); |
2587 | 126k | } |
2588 | 3.64M | |
2589 | 3.64M | // Reject the cast of super idiom in ObjC. |
2590 | 3.64M | if (Tok.is(tok::identifier) && getLangOpts().ObjC2.83M && |
2591 | 3.64M | Tok.getIdentifierInfo() == Ident_super30.1k && |
2592 | 3.64M | getCurScope()->isInObjcMethodScope()10 && |
2593 | 3.64M | GetLookAheadToken(1).isNot(tok::period)8 ) { |
2594 | 7 | Diag(Tok.getLocation(), diag::err_illegal_super_cast) |
2595 | 7 | << SourceRange(OpenLoc, RParenLoc); |
2596 | 7 | return ExprError(); |
2597 | 7 | } |
2598 | 3.64M | |
2599 | 3.64M | PreferredType.enterTypeCast(Tok.getLocation(), CastTy.get()); |
2600 | 3.64M | // Parse the cast-expression that follows it next. |
2601 | 3.64M | // TODO: For cast expression with CastTy. |
2602 | 3.64M | Result = ParseCastExpression(/*isUnaryExpression=*/false, |
2603 | 3.64M | /*isAddressOfOperand=*/false, |
2604 | 3.64M | /*isTypeCast=*/IsTypeCast); |
2605 | 3.64M | if (!Result.isInvalid()) { |
2606 | 3.64M | Result = Actions.ActOnCastExpr(getCurScope(), OpenLoc, |
2607 | 3.64M | DeclaratorInfo, CastTy, |
2608 | 3.64M | RParenLoc, Result.get()); |
2609 | 3.64M | } |
2610 | 3.64M | return Result; |
2611 | 3.64M | } |
2612 | 0 | |
2613 | 0 | Diag(Tok, diag::err_expected_lbrace_in_compound_literal); |
2614 | 0 | return ExprError(); |
2615 | 0 | } |
2616 | 2.23M | } else if (ExprType >= FoldExpr && Tok.is(tok::ellipsis) && |
2617 | 2.23M | isFoldOperator(NextToken().getKind())15 ) { |
2618 | 11 | ExprType = FoldExpr; |
2619 | 11 | return ParseFoldExpression(ExprResult(), T); |
2620 | 2.23M | } else if (isTypeCast) { |
2621 | 536k | // Parse the expression-list. |
2622 | 536k | InMessageExpressionRAIIObject InMessage(*this, false); |
2623 | 536k | |
2624 | 536k | ExprVector ArgExprs; |
2625 | 536k | CommaLocsTy CommaLocs; |
2626 | 536k | |
2627 | 536k | if (!ParseSimpleExpressionList(ArgExprs, CommaLocs)) { |
2628 | 536k | // FIXME: If we ever support comma expressions as operands to |
2629 | 536k | // fold-expressions, we'll need to allow multiple ArgExprs here. |
2630 | 536k | if (ExprType >= FoldExpr && ArgExprs.size() == 1 && |
2631 | 536k | isFoldOperator(Tok.getKind())529k && NextToken().is(tok::ellipsis)6 ) { |
2632 | 6 | ExprType = FoldExpr; |
2633 | 6 | return ParseFoldExpression(ArgExprs[0], T); |
2634 | 6 | } |
2635 | 536k | |
2636 | 536k | ExprType = SimpleExpr; |
2637 | 536k | Result = Actions.ActOnParenListExpr(OpenLoc, Tok.getLocation(), |
2638 | 536k | ArgExprs); |
2639 | 536k | } |
2640 | 1.69M | } else { |
2641 | 1.69M | InMessageExpressionRAIIObject InMessage(*this, false); |
2642 | 1.69M | |
2643 | 1.69M | Result = ParseExpression(MaybeTypeCast); |
2644 | 1.69M | if (!getLangOpts().CPlusPlus && MaybeTypeCast0 && Result.isUsable()520k ) { |
2645 | 519k | // Correct typos in non-C++ code earlier so that implicit-cast-like |
2646 | 519k | // expressions are parsed correctly. |
2647 | 519k | Result = Actions.CorrectDelayedTyposInExpr(Result); |
2648 | 519k | } |
2649 | 1.69M | |
2650 | 1.69M | if (ExprType >= FoldExpr && isFoldOperator(Tok.getKind()) && |
2651 | 1.69M | NextToken().is(tok::ellipsis)99 ) { |
2652 | 99 | ExprType = FoldExpr; |
2653 | 99 | return ParseFoldExpression(Result, T); |
2654 | 99 | } |
2655 | 1.69M | ExprType = SimpleExpr; |
2656 | 1.69M | |
2657 | 1.69M | // Don't build a paren expression unless we actually match a ')'. |
2658 | 1.69M | if (!Result.isInvalid() && Tok.is(tok::r_paren)1.69M ) |
2659 | 1.69M | Result = |
2660 | 1.69M | Actions.ActOnParenExpr(OpenLoc, Tok.getLocation(), Result.get()); |
2661 | 1.69M | } |
2662 | 6.05M | |
2663 | 6.05M | // Match the ')'. |
2664 | 6.05M | if (2.24M Result.isInvalid()2.24M ) { |
2665 | 1.02k | SkipUntil(tok::r_paren, StopAtSemi); |
2666 | 1.02k | return ExprError(); |
2667 | 1.02k | } |
2668 | 2.24M | |
2669 | 2.24M | T.consumeClose(); |
2670 | 2.24M | RParenLoc = T.getCloseLocation(); |
2671 | 2.24M | return Result; |
2672 | 2.24M | } |
2673 | | |
2674 | | /// ParseCompoundLiteralExpression - We have parsed the parenthesized type-name |
2675 | | /// and we are at the left brace. |
2676 | | /// |
2677 | | /// \verbatim |
2678 | | /// postfix-expression: [C99 6.5.2] |
2679 | | /// '(' type-name ')' '{' initializer-list '}' |
2680 | | /// '(' type-name ')' '{' initializer-list ',' '}' |
2681 | | /// \endverbatim |
2682 | | ExprResult |
2683 | | Parser::ParseCompoundLiteralExpression(ParsedType Ty, |
2684 | | SourceLocation LParenLoc, |
2685 | 29.8k | SourceLocation RParenLoc) { |
2686 | 29.8k | assert(Tok.is(tok::l_brace) && "Not a compound literal!"); |
2687 | 29.8k | if (!getLangOpts().C99) // Compound literals don't exist in C90. |
2688 | 3.57k | Diag(LParenLoc, diag::ext_c99_compound_literal); |
2689 | 29.8k | ExprResult Result = ParseInitializer(); |
2690 | 29.8k | if (!Result.isInvalid() && Ty) |
2691 | 29.8k | return Actions.ActOnCompoundLiteral(LParenLoc, Ty, RParenLoc, Result.get()); |
2692 | 3 | return Result; |
2693 | 3 | } |
2694 | | |
2695 | | /// ParseStringLiteralExpression - This handles the various token types that |
2696 | | /// form string literals, and also handles string concatenation [C99 5.1.1.2, |
2697 | | /// translation phase #6]. |
2698 | | /// |
2699 | | /// \verbatim |
2700 | | /// primary-expression: [C99 6.5.1] |
2701 | | /// string-literal |
2702 | | /// \verbatim |
2703 | 2.99M | ExprResult Parser::ParseStringLiteralExpression(bool AllowUserDefinedLiteral) { |
2704 | 2.99M | assert(isTokenStringLiteral() && "Not a string literal!"); |
2705 | 2.99M | |
2706 | 2.99M | // String concat. Note that keywords like __func__ and __FUNCTION__ are not |
2707 | 2.99M | // considered to be strings for concatenation purposes. |
2708 | 2.99M | SmallVector<Token, 4> StringToks; |
2709 | 2.99M | |
2710 | 3.83M | do { |
2711 | 3.83M | StringToks.push_back(Tok); |
2712 | 3.83M | ConsumeStringToken(); |
2713 | 3.83M | } while (isTokenStringLiteral()); |
2714 | 2.99M | |
2715 | 2.99M | // Pass the set of string tokens, ready for concatenation, to the actions. |
2716 | 2.99M | return Actions.ActOnStringLiteral(StringToks, |
2717 | 2.99M | AllowUserDefinedLiteral ? getCurScope()2.63M |
2718 | 2.99M | : nullptr360k ); |
2719 | 2.99M | } |
2720 | | |
2721 | | /// ParseGenericSelectionExpression - Parse a C11 generic-selection |
2722 | | /// [C11 6.5.1.1]. |
2723 | | /// |
2724 | | /// \verbatim |
2725 | | /// generic-selection: |
2726 | | /// _Generic ( assignment-expression , generic-assoc-list ) |
2727 | | /// generic-assoc-list: |
2728 | | /// generic-association |
2729 | | /// generic-assoc-list , generic-association |
2730 | | /// generic-association: |
2731 | | /// type-name : assignment-expression |
2732 | | /// default : assignment-expression |
2733 | | /// \endverbatim |
2734 | 237 | ExprResult Parser::ParseGenericSelectionExpression() { |
2735 | 237 | assert(Tok.is(tok::kw__Generic) && "_Generic keyword expected"); |
2736 | 237 | SourceLocation KeyLoc = ConsumeToken(); |
2737 | 237 | |
2738 | 237 | if (!getLangOpts().C11) |
2739 | 8 | Diag(KeyLoc, diag::ext_c11_generic_selection); |
2740 | 237 | |
2741 | 237 | BalancedDelimiterTracker T(*this, tok::l_paren); |
2742 | 237 | if (T.expectAndConsume()) |
2743 | 1 | return ExprError(); |
2744 | 236 | |
2745 | 236 | ExprResult ControllingExpr; |
2746 | 236 | { |
2747 | 236 | // C11 6.5.1.1p3 "The controlling expression of a generic selection is |
2748 | 236 | // not evaluated." |
2749 | 236 | EnterExpressionEvaluationContext Unevaluated( |
2750 | 236 | Actions, Sema::ExpressionEvaluationContext::Unevaluated); |
2751 | 236 | ControllingExpr = |
2752 | 236 | Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()); |
2753 | 236 | if (ControllingExpr.isInvalid()) { |
2754 | 1 | SkipUntil(tok::r_paren, StopAtSemi); |
2755 | 1 | return ExprError(); |
2756 | 1 | } |
2757 | 235 | } |
2758 | 235 | |
2759 | 235 | if (ExpectAndConsume(tok::comma)) { |
2760 | 1 | SkipUntil(tok::r_paren, StopAtSemi); |
2761 | 1 | return ExprError(); |
2762 | 1 | } |
2763 | 234 | |
2764 | 234 | SourceLocation DefaultLoc; |
2765 | 234 | TypeVector Types; |
2766 | 234 | ExprVector Exprs; |
2767 | 654 | do { |
2768 | 654 | ParsedType Ty; |
2769 | 654 | if (Tok.is(tok::kw_default)) { |
2770 | 32 | // C11 6.5.1.1p2 "A generic selection shall have no more than one default |
2771 | 32 | // generic association." |
2772 | 32 | if (!DefaultLoc.isInvalid()) { |
2773 | 1 | Diag(Tok, diag::err_duplicate_default_assoc); |
2774 | 1 | Diag(DefaultLoc, diag::note_previous_default_assoc); |
2775 | 1 | SkipUntil(tok::r_paren, StopAtSemi); |
2776 | 1 | return ExprError(); |
2777 | 1 | } |
2778 | 31 | DefaultLoc = ConsumeToken(); |
2779 | 31 | Ty = nullptr; |
2780 | 622 | } else { |
2781 | 622 | ColonProtectionRAIIObject X(*this); |
2782 | 622 | TypeResult TR = ParseTypeName(); |
2783 | 622 | if (TR.isInvalid()) { |
2784 | 0 | SkipUntil(tok::r_paren, StopAtSemi); |
2785 | 0 | return ExprError(); |
2786 | 0 | } |
2787 | 622 | Ty = TR.get(); |
2788 | 622 | } |
2789 | 654 | Types.push_back(Ty); |
2790 | 653 | |
2791 | 653 | if (ExpectAndConsume(tok::colon)) { |
2792 | 1 | SkipUntil(tok::r_paren, StopAtSemi); |
2793 | 1 | return ExprError(); |
2794 | 1 | } |
2795 | 652 | |
2796 | 652 | // FIXME: These expressions should be parsed in a potentially potentially |
2797 | 652 | // evaluated context. |
2798 | 652 | ExprResult ER( |
2799 | 652 | Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression())); |
2800 | 652 | if (ER.isInvalid()) { |
2801 | 8 | SkipUntil(tok::r_paren, StopAtSemi); |
2802 | 8 | return ExprError(); |
2803 | 8 | } |
2804 | 644 | Exprs.push_back(ER.get()); |
2805 | 644 | } while (TryConsumeToken(tok::comma)); |
2806 | 234 | |
2807 | 234 | T.consumeClose(); |
2808 | 224 | if (T.getCloseLocation().isInvalid()) |
2809 | 0 | return ExprError(); |
2810 | 224 | |
2811 | 224 | return Actions.ActOnGenericSelectionExpr(KeyLoc, DefaultLoc, |
2812 | 224 | T.getCloseLocation(), |
2813 | 224 | ControllingExpr.get(), |
2814 | 224 | Types, Exprs); |
2815 | 224 | } |
2816 | | |
2817 | | /// Parse A C++1z fold-expression after the opening paren and optional |
2818 | | /// left-hand-side expression. |
2819 | | /// |
2820 | | /// \verbatim |
2821 | | /// fold-expression: |
2822 | | /// ( cast-expression fold-operator ... ) |
2823 | | /// ( ... fold-operator cast-expression ) |
2824 | | /// ( cast-expression fold-operator ... fold-operator cast-expression ) |
2825 | | ExprResult Parser::ParseFoldExpression(ExprResult LHS, |
2826 | 116 | BalancedDelimiterTracker &T) { |
2827 | 116 | if (LHS.isInvalid()) { |
2828 | 0 | T.skipToEnd(); |
2829 | 0 | return true; |
2830 | 0 | } |
2831 | 116 | |
2832 | 116 | tok::TokenKind Kind = tok::unknown; |
2833 | 116 | SourceLocation FirstOpLoc; |
2834 | 116 | if (LHS.isUsable()) { |
2835 | 105 | Kind = Tok.getKind(); |
2836 | 105 | assert(isFoldOperator(Kind) && "missing fold-operator"); |
2837 | 105 | FirstOpLoc = ConsumeToken(); |
2838 | 105 | } |
2839 | 116 | |
2840 | 116 | assert(Tok.is(tok::ellipsis) && "not a fold-expression"); |
2841 | 116 | SourceLocation EllipsisLoc = ConsumeToken(); |
2842 | 116 | |
2843 | 116 | ExprResult RHS; |
2844 | 116 | if (Tok.isNot(tok::r_paren)) { |
2845 | 58 | if (!isFoldOperator(Tok.getKind())) |
2846 | 1 | return Diag(Tok.getLocation(), diag::err_expected_fold_operator); |
2847 | 57 | |
2848 | 57 | if (Kind != tok::unknown && Tok.getKind() != Kind46 ) |
2849 | 2 | Diag(Tok.getLocation(), diag::err_fold_operator_mismatch) |
2850 | 2 | << SourceRange(FirstOpLoc); |
2851 | 57 | Kind = Tok.getKind(); |
2852 | 57 | ConsumeToken(); |
2853 | 57 | |
2854 | 57 | RHS = ParseExpression(); |
2855 | 57 | if (RHS.isInvalid()) { |
2856 | 0 | T.skipToEnd(); |
2857 | 0 | return true; |
2858 | 0 | } |
2859 | 115 | } |
2860 | 115 | |
2861 | 115 | Diag(EllipsisLoc, getLangOpts().CPlusPlus17 |
2862 | 115 | ? diag::warn_cxx14_compat_fold_expression104 |
2863 | 115 | : diag::ext_fold_expression11 ); |
2864 | 115 | |
2865 | 115 | T.consumeClose(); |
2866 | 115 | return Actions.ActOnCXXFoldExpr(T.getOpenLocation(), LHS.get(), Kind, |
2867 | 115 | EllipsisLoc, RHS.get(), T.getCloseLocation()); |
2868 | 115 | } |
2869 | | |
2870 | | /// ParseExpressionList - Used for C/C++ (argument-)expression-list. |
2871 | | /// |
2872 | | /// \verbatim |
2873 | | /// argument-expression-list: |
2874 | | /// assignment-expression |
2875 | | /// argument-expression-list , assignment-expression |
2876 | | /// |
2877 | | /// [C++] expression-list: |
2878 | | /// [C++] assignment-expression |
2879 | | /// [C++] expression-list , assignment-expression |
2880 | | /// |
2881 | | /// [C++0x] expression-list: |
2882 | | /// [C++0x] initializer-list |
2883 | | /// |
2884 | | /// [C++0x] initializer-list |
2885 | | /// [C++0x] initializer-clause ...[opt] |
2886 | | /// [C++0x] initializer-list , initializer-clause ...[opt] |
2887 | | /// |
2888 | | /// [C++0x] initializer-clause: |
2889 | | /// [C++0x] assignment-expression |
2890 | | /// [C++0x] braced-init-list |
2891 | | /// \endverbatim |
2892 | | bool Parser::ParseExpressionList(SmallVectorImpl<Expr *> &Exprs, |
2893 | | SmallVectorImpl<SourceLocation> &CommaLocs, |
2894 | 4.57M | llvm::function_ref<void()> ExpressionStarts) { |
2895 | 4.57M | bool SawError = false; |
2896 | 10.1M | while (1) { |
2897 | 10.1M | if (ExpressionStarts) |
2898 | 10.1M | ExpressionStarts(); |
2899 | 10.1M | |
2900 | 10.1M | ExprResult Expr; |
2901 | 10.1M | if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)5.68M ) { |
2902 | 713 | Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists); |
2903 | 713 | Expr = ParseBraceInitializer(); |
2904 | 713 | } else |
2905 | 10.1M | Expr = ParseAssignmentExpression(); |
2906 | 10.1M | |
2907 | 10.1M | if (Tok.is(tok::ellipsis)) |
2908 | 44.1k | Expr = Actions.ActOnPackExpansion(Expr.get(), ConsumeToken()); |
2909 | 10.1M | if (Expr.isInvalid()) { |
2910 | 4.91k | SkipUntil(tok::comma, tok::r_paren, StopBeforeMatch); |
2911 | 4.91k | SawError = true; |
2912 | 10.1M | } else { |
2913 | 10.1M | Exprs.push_back(Expr.get()); |
2914 | 10.1M | } |
2915 | 10.1M | |
2916 | 10.1M | if (Tok.isNot(tok::comma)) |
2917 | 4.57M | break; |
2918 | 5.57M | // Move to the next argument, remember where the comma was. |
2919 | 5.57M | Token Comma = Tok; |
2920 | 5.57M | CommaLocs.push_back(ConsumeToken()); |
2921 | 5.57M | |
2922 | 5.57M | checkPotentialAngleBracketDelimiter(Comma); |
2923 | 5.57M | } |
2924 | 4.57M | if (SawError) { |
2925 | 4.07k | // Ensure typos get diagnosed when errors were encountered while parsing the |
2926 | 4.07k | // expression list. |
2927 | 4.07k | for (auto &E : Exprs) { |
2928 | 3.33k | ExprResult Expr = Actions.CorrectDelayedTyposInExpr(E); |
2929 | 3.33k | if (Expr.isUsable()) E = Expr.get()2.93k ; |
2930 | 3.33k | } |
2931 | 4.07k | } |
2932 | 4.57M | return SawError; |
2933 | 4.57M | } |
2934 | | |
2935 | | /// ParseSimpleExpressionList - A simple comma-separated list of expressions, |
2936 | | /// used for misc language extensions. |
2937 | | /// |
2938 | | /// \verbatim |
2939 | | /// simple-expression-list: |
2940 | | /// assignment-expression |
2941 | | /// simple-expression-list , assignment-expression |
2942 | | /// \endverbatim |
2943 | | bool |
2944 | | Parser::ParseSimpleExpressionList(SmallVectorImpl<Expr*> &Exprs, |
2945 | 536k | SmallVectorImpl<SourceLocation> &CommaLocs) { |
2946 | 624k | while (1) { |
2947 | 624k | ExprResult Expr = ParseAssignmentExpression(); |
2948 | 624k | if (Expr.isInvalid()) |
2949 | 305 | return true; |
2950 | 624k | |
2951 | 624k | Exprs.push_back(Expr.get()); |
2952 | 624k | |
2953 | 624k | if (Tok.isNot(tok::comma)) |
2954 | 536k | return false; |
2955 | 87.9k | |
2956 | 87.9k | // Move to the next argument, remember where the comma was. |
2957 | 87.9k | Token Comma = Tok; |
2958 | 87.9k | CommaLocs.push_back(ConsumeToken()); |
2959 | 87.9k | |
2960 | 87.9k | checkPotentialAngleBracketDelimiter(Comma); |
2961 | 87.9k | } |
2962 | 536k | } |
2963 | | |
2964 | | /// ParseBlockId - Parse a block-id, which roughly looks like int (int x). |
2965 | | /// |
2966 | | /// \verbatim |
2967 | | /// [clang] block-id: |
2968 | | /// [clang] specifier-qualifier-list block-declarator |
2969 | | /// \endverbatim |
2970 | 165 | void Parser::ParseBlockId(SourceLocation CaretLoc) { |
2971 | 165 | if (Tok.is(tok::code_completion)) { |
2972 | 1 | Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Type); |
2973 | 1 | return cutOffParsing(); |
2974 | 1 | } |
2975 | 164 | |
2976 | 164 | // Parse the specifier-qualifier-list piece. |
2977 | 164 | DeclSpec DS(AttrFactory); |
2978 | 164 | ParseSpecifierQualifierList(DS); |
2979 | 164 | |
2980 | 164 | // Parse the block-declarator. |
2981 | 164 | Declarator DeclaratorInfo(DS, DeclaratorContext::BlockLiteralContext); |
2982 | 164 | DeclaratorInfo.setFunctionDefinitionKind(FDK_Definition); |
2983 | 164 | ParseDeclarator(DeclaratorInfo); |
2984 | 164 | |
2985 | 164 | MaybeParseGNUAttributes(DeclaratorInfo); |
2986 | 164 | |
2987 | 164 | // Inform sema that we are starting a block. |
2988 | 164 | Actions.ActOnBlockArguments(CaretLoc, DeclaratorInfo, getCurScope()); |
2989 | 164 | } |
2990 | | |
2991 | | /// ParseBlockLiteralExpression - Parse a block literal, which roughly looks |
2992 | | /// like ^(int x){ return x+1; } |
2993 | | /// |
2994 | | /// \verbatim |
2995 | | /// block-literal: |
2996 | | /// [clang] '^' block-args[opt] compound-statement |
2997 | | /// [clang] '^' block-id compound-statement |
2998 | | /// [clang] block-args: |
2999 | | /// [clang] '(' parameter-list ')' |
3000 | | /// \endverbatim |
3001 | 2.71k | ExprResult Parser::ParseBlockLiteralExpression() { |
3002 | 2.71k | assert(Tok.is(tok::caret) && "block literal starts with ^"); |
3003 | 2.71k | SourceLocation CaretLoc = ConsumeToken(); |
3004 | 2.71k | |
3005 | 2.71k | PrettyStackTraceLoc CrashInfo(PP.getSourceManager(), CaretLoc, |
3006 | 2.71k | "block literal parsing"); |
3007 | 2.71k | |
3008 | 2.71k | // Enter a scope to hold everything within the block. This includes the |
3009 | 2.71k | // argument decls, decls within the compound expression, etc. This also |
3010 | 2.71k | // allows determining whether a variable reference inside the block is |
3011 | 2.71k | // within or outside of the block. |
3012 | 2.71k | ParseScope BlockScope(this, Scope::BlockScope | Scope::FnScope | |
3013 | 2.71k | Scope::CompoundStmtScope | Scope::DeclScope); |
3014 | 2.71k | |
3015 | 2.71k | // Inform sema that we are starting a block. |
3016 | 2.71k | Actions.ActOnBlockStart(CaretLoc, getCurScope()); |
3017 | 2.71k | |
3018 | 2.71k | // Parse the return type if present. |
3019 | 2.71k | DeclSpec DS(AttrFactory); |
3020 | 2.71k | Declarator ParamInfo(DS, DeclaratorContext::BlockLiteralContext); |
3021 | 2.71k | ParamInfo.setFunctionDefinitionKind(FDK_Definition); |
3022 | 2.71k | // FIXME: Since the return type isn't actually parsed, it can't be used to |
3023 | 2.71k | // fill ParamInfo with an initial valid range, so do it manually. |
3024 | 2.71k | ParamInfo.SetSourceRange(SourceRange(Tok.getLocation(), Tok.getLocation())); |
3025 | 2.71k | |
3026 | 2.71k | // If this block has arguments, parse them. There is no ambiguity here with |
3027 | 2.71k | // the expression case, because the expression case requires a parameter list. |
3028 | 2.71k | if (Tok.is(tok::l_paren)) { |
3029 | 1.11k | ParseParenDeclarator(ParamInfo); |
3030 | 1.11k | // Parse the pieces after the identifier as if we had "int(...)". |
3031 | 1.11k | // SetIdentifier sets the source range end, but in this case we're past |
3032 | 1.11k | // that location. |
3033 | 1.11k | SourceLocation Tmp = ParamInfo.getSourceRange().getEnd(); |
3034 | 1.11k | ParamInfo.SetIdentifier(nullptr, CaretLoc); |
3035 | 1.11k | ParamInfo.SetRangeEnd(Tmp); |
3036 | 1.11k | if (ParamInfo.isInvalidType()) { |
3037 | 0 | // If there was an error parsing the arguments, they may have |
3038 | 0 | // tried to use ^(x+y) which requires an argument list. Just |
3039 | 0 | // skip the whole block literal. |
3040 | 0 | Actions.ActOnBlockError(CaretLoc, getCurScope()); |
3041 | 0 | return ExprError(); |
3042 | 0 | } |
3043 | 1.11k | |
3044 | 1.11k | MaybeParseGNUAttributes(ParamInfo); |
3045 | 1.11k | |
3046 | 1.11k | // Inform sema that we are starting a block. |
3047 | 1.11k | Actions.ActOnBlockArguments(CaretLoc, ParamInfo, getCurScope()); |
3048 | 1.60k | } else if (!Tok.is(tok::l_brace)) { |
3049 | 165 | ParseBlockId(CaretLoc); |
3050 | 1.43k | } else { |
3051 | 1.43k | // Otherwise, pretend we saw (void). |
3052 | 1.43k | SourceLocation NoLoc; |
3053 | 1.43k | ParamInfo.AddTypeInfo( |
3054 | 1.43k | DeclaratorChunk::getFunction(/*HasProto=*/true, |
3055 | 1.43k | /*IsAmbiguous=*/false, |
3056 | 1.43k | /*RParenLoc=*/NoLoc, |
3057 | 1.43k | /*ArgInfo=*/nullptr, |
3058 | 1.43k | /*NumParams=*/0, |
3059 | 1.43k | /*EllipsisLoc=*/NoLoc, |
3060 | 1.43k | /*RParenLoc=*/NoLoc, |
3061 | 1.43k | /*RefQualifierIsLvalueRef=*/true, |
3062 | 1.43k | /*RefQualifierLoc=*/NoLoc, |
3063 | 1.43k | /*MutableLoc=*/NoLoc, EST_None, |
3064 | 1.43k | /*ESpecRange=*/SourceRange(), |
3065 | 1.43k | /*Exceptions=*/nullptr, |
3066 | 1.43k | /*ExceptionRanges=*/nullptr, |
3067 | 1.43k | /*NumExceptions=*/0, |
3068 | 1.43k | /*NoexceptExpr=*/nullptr, |
3069 | 1.43k | /*ExceptionSpecTokens=*/nullptr, |
3070 | 1.43k | /*DeclsInPrototype=*/None, CaretLoc, |
3071 | 1.43k | CaretLoc, ParamInfo), |
3072 | 1.43k | CaretLoc); |
3073 | 1.43k | |
3074 | 1.43k | MaybeParseGNUAttributes(ParamInfo); |
3075 | 1.43k | |
3076 | 1.43k | // Inform sema that we are starting a block. |
3077 | 1.43k | Actions.ActOnBlockArguments(CaretLoc, ParamInfo, getCurScope()); |
3078 | 1.43k | } |
3079 | 2.71k | |
3080 | 2.71k | |
3081 | 2.71k | ExprResult Result(true); |
3082 | 2.71k | if (!Tok.is(tok::l_brace)) { |
3083 | 3 | // Saw something like: ^expr |
3084 | 3 | Diag(Tok, diag::err_expected_expression); |
3085 | 3 | Actions.ActOnBlockError(CaretLoc, getCurScope()); |
3086 | 3 | return ExprError(); |
3087 | 3 | } |
3088 | 2.71k | |
3089 | 2.71k | StmtResult Stmt(ParseCompoundStatementBody()); |
3090 | 2.71k | BlockScope.Exit(); |
3091 | 2.71k | if (!Stmt.isInvalid()) |
3092 | 2.71k | Result = Actions.ActOnBlockStmtExpr(CaretLoc, Stmt.get(), getCurScope()); |
3093 | 0 | else |
3094 | 0 | Actions.ActOnBlockError(CaretLoc, getCurScope()); |
3095 | 2.71k | return Result; |
3096 | 2.71k | } |
3097 | | |
3098 | | /// ParseObjCBoolLiteral - This handles the objective-c Boolean literals. |
3099 | | /// |
3100 | | /// '__objc_yes' |
3101 | | /// '__objc_no' |
3102 | 164 | ExprResult Parser::ParseObjCBoolLiteral() { |
3103 | 164 | tok::TokenKind Kind = Tok.getKind(); |
3104 | 164 | return Actions.ActOnObjCBoolLiteral(ConsumeToken(), Kind); |
3105 | 164 | } |
3106 | | |
3107 | | /// Validate availability spec list, emitting diagnostics if necessary. Returns |
3108 | | /// true if invalid. |
3109 | | static bool CheckAvailabilitySpecList(Parser &P, |
3110 | 76 | ArrayRef<AvailabilitySpec> AvailSpecs) { |
3111 | 76 | llvm::SmallSet<StringRef, 4> Platforms; |
3112 | 76 | bool HasOtherPlatformSpec = false; |
3113 | 76 | bool Valid = true; |
3114 | 160 | for (const auto &Spec : AvailSpecs) { |
3115 | 160 | if (Spec.isOtherPlatformSpec()) { |
3116 | 75 | if (HasOtherPlatformSpec) { |
3117 | 0 | P.Diag(Spec.getBeginLoc(), diag::err_availability_query_repeated_star); |
3118 | 0 | Valid = false; |
3119 | 0 | } |
3120 | 75 | |
3121 | 75 | HasOtherPlatformSpec = true; |
3122 | 75 | continue; |
3123 | 75 | } |
3124 | 85 | |
3125 | 85 | bool Inserted = Platforms.insert(Spec.getPlatform()).second; |
3126 | 85 | if (!Inserted) { |
3127 | 1 | // Rule out multiple version specs referring to the same platform. |
3128 | 1 | // For example, we emit an error for: |
3129 | 1 | // @available(macos 10.10, macos 10.11, *) |
3130 | 1 | StringRef Platform = Spec.getPlatform(); |
3131 | 1 | P.Diag(Spec.getBeginLoc(), diag::err_availability_query_repeated_platform) |
3132 | 1 | << Spec.getEndLoc() << Platform; |
3133 | 1 | Valid = false; |
3134 | 1 | } |
3135 | 85 | } |
3136 | 76 | |
3137 | 76 | if (!HasOtherPlatformSpec) { |
3138 | 1 | SourceLocation InsertWildcardLoc = AvailSpecs.back().getEndLoc(); |
3139 | 1 | P.Diag(InsertWildcardLoc, diag::err_availability_query_wildcard_required) |
3140 | 1 | << FixItHint::CreateInsertion(InsertWildcardLoc, ", *"); |
3141 | 1 | return true; |
3142 | 1 | } |
3143 | 75 | |
3144 | 75 | return !Valid; |
3145 | 75 | } |
3146 | | |
3147 | | /// Parse availability query specification. |
3148 | | /// |
3149 | | /// availability-spec: |
3150 | | /// '*' |
3151 | | /// identifier version-tuple |
3152 | 171 | Optional<AvailabilitySpec> Parser::ParseAvailabilitySpec() { |
3153 | 171 | if (Tok.is(tok::star)) { |
3154 | 77 | return AvailabilitySpec(ConsumeToken()); |
3155 | 94 | } else { |
3156 | 94 | // Parse the platform name. |
3157 | 94 | if (Tok.is(tok::code_completion)) { |
3158 | 2 | Actions.CodeCompleteAvailabilityPlatformName(); |
3159 | 2 | cutOffParsing(); |
3160 | 2 | return None; |
3161 | 2 | } |
3162 | 92 | if (Tok.isNot(tok::identifier)) { |
3163 | 2 | Diag(Tok, diag::err_avail_query_expected_platform_name); |
3164 | 2 | return None; |
3165 | 2 | } |
3166 | 90 | |
3167 | 90 | IdentifierLoc *PlatformIdentifier = ParseIdentifierLoc(); |
3168 | 90 | SourceRange VersionRange; |
3169 | 90 | VersionTuple Version = ParseVersionTuple(VersionRange); |
3170 | 90 | |
3171 | 90 | if (Version.empty()) |
3172 | 1 | return None; |
3173 | 89 | |
3174 | 89 | StringRef GivenPlatform = PlatformIdentifier->Ident->getName(); |
3175 | 89 | StringRef Platform = |
3176 | 89 | AvailabilityAttr::canonicalizePlatformName(GivenPlatform); |
3177 | 89 | |
3178 | 89 | if (AvailabilityAttr::getPrettyPlatformName(Platform).empty()) { |
3179 | 3 | Diag(PlatformIdentifier->Loc, |
3180 | 3 | diag::err_avail_query_unrecognized_platform_name) |
3181 | 3 | << GivenPlatform; |
3182 | 3 | return None; |
3183 | 3 | } |
3184 | 86 | |
3185 | 86 | return AvailabilitySpec(Version, Platform, PlatformIdentifier->Loc, |
3186 | 86 | VersionRange.getEnd()); |
3187 | 86 | } |
3188 | 171 | } |
3189 | | |
3190 | 84 | ExprResult Parser::ParseAvailabilityCheckExpr(SourceLocation BeginLoc) { |
3191 | 84 | assert(Tok.is(tok::kw___builtin_available) || |
3192 | 84 | Tok.isObjCAtKeyword(tok::objc_available)); |
3193 | 84 | |
3194 | 84 | // Eat the available or __builtin_available. |
3195 | 84 | ConsumeToken(); |
3196 | 84 | |
3197 | 84 | BalancedDelimiterTracker Parens(*this, tok::l_paren); |
3198 | 84 | if (Parens.expectAndConsume()) |
3199 | 1 | return ExprError(); |
3200 | 83 | |
3201 | 83 | SmallVector<AvailabilitySpec, 4> AvailSpecs; |
3202 | 83 | bool HasError = false; |
3203 | 171 | while (true) { |
3204 | 171 | Optional<AvailabilitySpec> Spec = ParseAvailabilitySpec(); |
3205 | 171 | if (!Spec) |
3206 | 8 | HasError = true; |
3207 | 163 | else |
3208 | 163 | AvailSpecs.push_back(*Spec); |
3209 | 171 | |
3210 | 171 | if (!TryConsumeToken(tok::comma)) |
3211 | 83 | break; |
3212 | 171 | } |
3213 | 83 | |
3214 | 83 | if (HasError) { |
3215 | 7 | SkipUntil(tok::r_paren, StopAtSemi); |
3216 | 7 | return ExprError(); |
3217 | 7 | } |
3218 | 76 | |
3219 | 76 | CheckAvailabilitySpecList(*this, AvailSpecs); |
3220 | 76 | |
3221 | 76 | if (Parens.consumeClose()) |
3222 | 0 | return ExprError(); |
3223 | 76 | |
3224 | 76 | return Actions.ActOnObjCAvailabilityCheckExpr(AvailSpecs, BeginLoc, |
3225 | 76 | Parens.getCloseLocation()); |
3226 | 76 | } |