ParseCXXInlineMethods.cpp revision 81542fd91bd5e7e65ebae3eaad117bdaeaf7d737
14cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis//===--- ParseCXXInlineMethods.cpp - C++ class inline methods parsing------===// 24cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// 34cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// The LLVM Compiler Infrastructure 44cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// 54cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// This file is distributed under the University of Illinois Open Source 64cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// License. See LICENSE.TXT for details. 74cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// 84cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis//===----------------------------------------------------------------------===// 94cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// 104cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// This file implements parsing for C++ class inline methods. 114cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis// 124cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis//===----------------------------------------------------------------------===// 134cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 14500d3297d2a21edeac4d46cbcbe21bc2352c2a28Chris Lattner#include "clang/Parse/ParseDiagnostic.h" 154cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis#include "clang/Parse/Parser.h" 1619510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/DeclSpec.h" 1719510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/Scope.h" 188387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet#include "clang/AST/DeclTemplate.h" 194cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidisusing namespace clang; 204cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 21d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl/// ParseCXXInlineMethodDef - We parsed and verified that the specified 224cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis/// Declarator is a well formed C++ inline method definition. Now lex its body 234cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis/// and store its tokens for parsing after the C++ class is complete. 24eee1d5434ebfa955ffc3c493aecd68bb7b3f4838John McCallDecl *Parser::ParseCXXInlineMethodDef(AccessSpecifier AS, ParsingDeclarator &D, 254867347e82648d3baf09524b98b09c297a5a198fNico Weber const ParsedTemplateInfo &TemplateInfo, 264867347e82648d3baf09524b98b09c297a5a198fNico Weber const VirtSpecifiers& VS) { 27075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara assert(D.isFunctionDeclarator() && "This isn't a function declarator!"); 28d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl assert((Tok.is(tok::l_brace) || Tok.is(tok::colon) || Tok.is(tok::kw_try)) && 29d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl "Current token not a '{', ':' or 'try'!"); 304cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 31f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiTemplateParamsArg TemplateParams(Actions, 324cd8494d9a2f99cbf38147bca80be18cdff83734Sean Hunt TemplateInfo.TemplateParams ? TemplateInfo.TemplateParams->data() : 0, 334cd8494d9a2f99cbf38147bca80be18cdff83734Sean Hunt TemplateInfo.TemplateParams ? TemplateInfo.TemplateParams->size() : 0); 344cd8494d9a2f99cbf38147bca80be18cdff83734Sean Hunt 35d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *FnD; 3667d1a67f3db2f1aa69083c5c94164d6e0ee05b32John McCall if (D.getDeclSpec().isFriendSpecified()) 3737b372b76a3fafe77186d7e6079e5642e2017478Douglas Gregor // FIXME: Friend templates 3823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor FnD = Actions.ActOnFriendFunctionDecl(getCurScope(), D, true, 394cd8494d9a2f99cbf38147bca80be18cdff83734Sean Hunt move(TemplateParams)); 404867347e82648d3baf09524b98b09c297a5a198fNico Weber else { // FIXME: pass template information through 4123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor FnD = Actions.ActOnCXXMemberDeclarator(getCurScope(), AS, D, 4269a87357310260c4b2c5dce2cdcd10c3fd3a0a58Anders Carlsson move(TemplateParams), 0, 434867347e82648d3baf09524b98b09c297a5a198fNico Weber VS, 0, /*IsDefinition*/true); 444867347e82648d3baf09524b98b09c297a5a198fNico Weber } 454cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 46d33133cdc1af466f9c276249b2621be03867888bEli Friedman HandleMemberFunctionDefaultArgs(D, FnD); 47d33133cdc1af466f9c276249b2621be03867888bEli Friedman 48eee1d5434ebfa955ffc3c493aecd68bb7b3f4838John McCall D.complete(FnD); 49eee1d5434ebfa955ffc3c493aecd68bb7b3f4838John McCall 508387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // In delayed template parsing mode, if we are within a class template 518387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // or if we are about to parse function member template then consume 528387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet // the tokens and store them for parsing at the end of the translation unit. 538387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (getLang().DelayedTemplateParsing && 548387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet ((Actions.CurContext->isDependentContext() || 558387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate) && 568387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet !Actions.IsInsideALocalClassWithinATemplateFunction()) && 578387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet !D.getDeclSpec().isFriendSpecified()) { 588387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 598387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (FnD) { 608387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LateParsedTemplatedFunction *LPT = 618387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet new LateParsedTemplatedFunction(this, FnD); 628387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 638387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FunctionDecl *FD = 0; 648387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet if (FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(FnD)) 658387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FD = FunTmpl->getTemplatedDecl(); 668387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet else 678387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet FD = cast<FunctionDecl>(FnD); 6881542fd91bd5e7e65ebae3eaad117bdaeaf7d737Chandler Carruth Actions.CheckForFunctionRedefinition(FD); 698387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 708387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LateParsedTemplateMap[FD] = LPT; 718387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet Actions.MarkAsLateParsedTemplate(FD); 728387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LexTemplateFunctionForLateParsing(LPT->Toks); 738387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } else { 748387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet CachedTokens Toks; 758387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet LexTemplateFunctionForLateParsing(Toks); 768387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } 778387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 788387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet return FnD; 798387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet } 808387e2a41eef6fa17fb140a18c29b6eee9dd2b8aFrancois Pichet 814cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // Consume the tokens and store them for later parsing. 824cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 83d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor LexedMethod* LM = new LexedMethod(this, FnD); 84d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor getCurrentClass().LateParsedDeclarations.push_back(LM); 85d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor LM->TemplateScope = getCurScope()->isTemplateParamScope(); 86d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor CachedTokens &Toks = LM->Toks; 874cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 88d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl tok::TokenKind kind = Tok.getKind(); 89d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl // We may have a constructor initializer or function-try-block here. 90d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (kind == tok::colon || kind == tok::kw_try) { 917ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // Consume everything up to (and including) the left brace. 9214b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis if (!ConsumeAndStoreUntil(tok::l_brace, Toks)) { 933f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor // We didn't find the left-brace we expected after the 941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // constructor initializer. 953f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor if (Tok.is(tok::semi)) { 963f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor // We found a semicolon; complain, consume the semicolon, and 973f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor // don't try to parse this method later. 983f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor Diag(Tok.getLocation(), diag::err_expected_lbrace); 993f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor ConsumeAnyToken(); 100d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor delete getCurrentClass().LateParsedDeclarations.back(); 101d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor getCurrentClass().LateParsedDeclarations.pop_back(); 1023f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor return FnD; 1033f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor } 1043f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor } 1053f08d181f620e6bf4971c436fc9878f98a02bbe3Douglas Gregor 1067ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor } else { 1071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Begin by storing the '{' token. 1087ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor Toks.push_back(Tok); 1097ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor ConsumeBrace(); 1107ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor } 1117ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // Consume everything up to (and including) the matching right brace. 11214b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis ConsumeAndStoreUntil(tok::r_brace, Toks, /*StopAtSemi=*/false); 1134cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 114d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl // If we're in a function-try-block, we need to store all the catch blocks. 115d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (kind == tok::kw_try) { 116d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl while (Tok.is(tok::kw_catch)) { 11714b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis ConsumeAndStoreUntil(tok::l_brace, Toks, /*StopAtSemi=*/false); 11814b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis ConsumeAndStoreUntil(tok::r_brace, Toks, /*StopAtSemi=*/false); 119d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl } 120d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl } 121d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl 12287f106462ce49a4a9b812b9de92aadd4e54567bdDouglas Gregor 12387f106462ce49a4a9b812b9de92aadd4e54567bdDouglas Gregor if (!FnD) { 12487f106462ce49a4a9b812b9de92aadd4e54567bdDouglas Gregor // If semantic analysis could not build a function declaration, 12587f106462ce49a4a9b812b9de92aadd4e54567bdDouglas Gregor // just throw away the late-parsed declaration. 12687f106462ce49a4a9b812b9de92aadd4e54567bdDouglas Gregor delete getCurrentClass().LateParsedDeclarations.back(); 12787f106462ce49a4a9b812b9de92aadd4e54567bdDouglas Gregor getCurrentClass().LateParsedDeclarations.pop_back(); 12887f106462ce49a4a9b812b9de92aadd4e54567bdDouglas Gregor } 12987f106462ce49a4a9b812b9de92aadd4e54567bdDouglas Gregor 1304cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis return FnD; 1314cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis} 1324cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 133d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas GregorParser::LateParsedDeclaration::~LateParsedDeclaration() {} 134d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregorvoid Parser::LateParsedDeclaration::ParseLexedMethodDeclarations() {} 135d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregorvoid Parser::LateParsedDeclaration::ParseLexedMethodDefs() {} 136d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 137d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas GregorParser::LateParsedClass::LateParsedClass(Parser *P, ParsingClass *C) 138d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor : Self(P), Class(C) {} 139d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 140d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas GregorParser::LateParsedClass::~LateParsedClass() { 141d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Self->DeallocateParsedClasses(Class); 142d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor} 143d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 144d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregorvoid Parser::LateParsedClass::ParseLexedMethodDeclarations() { 145d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Self->ParseLexedMethodDeclarations(*Class); 146d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor} 147d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 148d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregorvoid Parser::LateParsedClass::ParseLexedMethodDefs() { 149d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Self->ParseLexedMethodDefs(*Class); 150d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor} 151d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 152d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregorvoid Parser::LateParsedMethodDeclaration::ParseLexedMethodDeclarations() { 153d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Self->ParseLexedMethodDeclaration(*this); 154d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor} 155d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 156d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregorvoid Parser::LexedMethod::ParseLexedMethodDefs() { 157d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Self->ParseLexedMethodDef(*this); 158d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor} 159d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 16072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor/// ParseLexedMethodDeclarations - We finished parsing the member 16172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor/// specification of a top (non-nested) C++ class. Now go over the 16272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor/// stack of method declarations with some parts for which parsing was 16372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor/// delayed (such as default arguments) and parse them. 1646569d68745c8213709740337d2be52b031384f58Douglas Gregorvoid Parser::ParseLexedMethodDeclarations(ParsingClass &Class) { 1656569d68745c8213709740337d2be52b031384f58Douglas Gregor bool HasTemplateScope = !Class.TopLevelClass && Class.TemplateScope; 166d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ParseScope ClassTemplateScope(this, Scope::TemplateParamScope, HasTemplateScope); 1676569d68745c8213709740337d2be52b031384f58Douglas Gregor if (HasTemplateScope) 16823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnReenterTemplateScope(getCurScope(), Class.TagOrTemplate); 1696569d68745c8213709740337d2be52b031384f58Douglas Gregor 1707a1dc562d4ad59237ed9fe7e8cef56f9eaa7a26cJohn McCall // The current scope is still active if we're the top-level class. 1717a1dc562d4ad59237ed9fe7e8cef56f9eaa7a26cJohn McCall // Otherwise we'll need to push and enter a new scope. 1726569d68745c8213709740337d2be52b031384f58Douglas Gregor bool HasClassScope = !Class.TopLevelClass; 1734cd8494d9a2f99cbf38147bca80be18cdff83734Sean Hunt ParseScope ClassScope(this, Scope::ClassScope|Scope::DeclScope, 1744cd8494d9a2f99cbf38147bca80be18cdff83734Sean Hunt HasClassScope); 1757a1dc562d4ad59237ed9fe7e8cef56f9eaa7a26cJohn McCall if (HasClassScope) 17623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnStartDelayedMemberDeclarations(getCurScope(), Class.TagOrTemplate); 1776569d68745c8213709740337d2be52b031384f58Douglas Gregor 178d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor for (size_t i = 0; i < Class.LateParsedDeclarations.size(); ++i) { 179d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Class.LateParsedDeclarations[i]->ParseLexedMethodDeclarations(); 180d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor } 18172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 182d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (HasClassScope) 183d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnFinishDelayedMemberDeclarations(getCurScope(), Class.TagOrTemplate); 184d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor} 1857fd3a6456a88cdd225b92ae1606144f24c7f51d4Argyrios Kyrtzidis 186d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregorvoid Parser::ParseLexedMethodDeclaration(LateParsedMethodDeclaration &LM) { 187d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // If this is a member template, introduce the template parameter scope. 188d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ParseScope TemplateScope(this, Scope::TemplateParamScope, LM.TemplateScope); 189d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (LM.TemplateScope) 190d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnReenterTemplateScope(getCurScope(), LM.Method); 191d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 192d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Start the delayed C++ method declaration 193d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnStartDelayedCXXMethodDeclaration(getCurScope(), LM.Method); 194d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 195d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Introduce the parameters into scope and parse their default 196d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // arguments. 197d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ParseScope PrototypeScope(this, 198d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Scope::FunctionPrototypeScope|Scope::DeclScope); 199d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor for (unsigned I = 0, N = LM.DefaultArgs.size(); I != N; ++I) { 200d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Introduce the parameter into scope. 201d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnDelayedCXXMethodParameter(getCurScope(), LM.DefaultArgs[I].Param); 202d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 203d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (CachedTokens *Toks = LM.DefaultArgs[I].Toks) { 204d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Save the current token position. 205d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor SourceLocation origLoc = Tok.getLocation(); 206d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 207d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Parse the default argument from its saved token stream. 208d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Toks->push_back(Tok); // So that the current token doesn't get lost 209d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor PP.EnterTokenStream(&Toks->front(), Toks->size(), true, false); 210d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 211d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Consume the previously-pushed token. 212d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ConsumeAnyToken(); 213d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 214d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Consume the '='. 215d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor assert(Tok.is(tok::equal) && "Default argument not starting with '='"); 216d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor SourceLocation EqualLoc = ConsumeToken(); 217d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 218d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // The argument isn't actually potentially evaluated unless it is 219d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // used. 220d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor EnterExpressionEvaluationContext Eval(Actions, 221d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Sema::PotentiallyEvaluatedIfUsed); 222d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 223d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ExprResult DefArgResult(ParseAssignmentExpression()); 224d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (DefArgResult.isInvalid()) 225d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnParamDefaultArgumentError(LM.DefaultArgs[I].Param); 226d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor else { 227d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (Tok.is(tok::cxx_defaultarg_end)) 228d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ConsumeToken(); 229d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor else 230d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Diag(Tok.getLocation(), diag::err_default_arg_unparsed); 231d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnParamDefaultArgument(LM.DefaultArgs[I].Param, EqualLoc, 232d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor DefArgResult.take()); 233d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor } 23472b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 235d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor assert(!PP.getSourceManager().isBeforeInTranslationUnit(origLoc, 236d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Tok.getLocation()) && 237d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor "ParseAssignmentExpression went over the default arg tokens!"); 238d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // There could be leftover tokens (e.g. because of an error). 239d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Skip through until we reach the original token position. 240d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor while (Tok.getLocation() != origLoc && Tok.isNot(tok::eof)) 24172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor ConsumeAnyToken(); 24272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 243d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor delete Toks; 244d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor LM.DefaultArgs[I].Toks = 0; 24572b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor } 24672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor } 247d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor PrototypeScope.Exit(); 2486569d68745c8213709740337d2be52b031384f58Douglas Gregor 249d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Finish the delayed C++ method declaration. 250d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnFinishDelayedCXXMethodDeclaration(getCurScope(), LM.Method); 25172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor} 25272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor 2534cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis/// ParseLexedMethodDefs - We finished parsing the member specification of a top 2544cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis/// (non-nested) C++ class. Now go over the stack of lexed methods that were 2554cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis/// collected during its parsing and parse them all. 2566569d68745c8213709740337d2be52b031384f58Douglas Gregorvoid Parser::ParseLexedMethodDefs(ParsingClass &Class) { 2576569d68745c8213709740337d2be52b031384f58Douglas Gregor bool HasTemplateScope = !Class.TopLevelClass && Class.TemplateScope; 258d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ParseScope ClassTemplateScope(this, Scope::TemplateParamScope, HasTemplateScope); 2596569d68745c8213709740337d2be52b031384f58Douglas Gregor if (HasTemplateScope) 26023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnReenterTemplateScope(getCurScope(), Class.TagOrTemplate); 2616569d68745c8213709740337d2be52b031384f58Douglas Gregor 2626569d68745c8213709740337d2be52b031384f58Douglas Gregor bool HasClassScope = !Class.TopLevelClass; 2636569d68745c8213709740337d2be52b031384f58Douglas Gregor ParseScope ClassScope(this, Scope::ClassScope|Scope::DeclScope, 2646569d68745c8213709740337d2be52b031384f58Douglas Gregor HasClassScope); 2656569d68745c8213709740337d2be52b031384f58Douglas Gregor 266d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor for (size_t i = 0; i < Class.LateParsedDeclarations.size(); ++i) { 267d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Class.LateParsedDeclarations[i]->ParseLexedMethodDefs(); 268d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor } 269d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor} 2704cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 271d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregorvoid Parser::ParseLexedMethodDef(LexedMethod &LM) { 272d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // If this is a member template, introduce the template parameter scope. 273d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ParseScope TemplateScope(this, Scope::TemplateParamScope, LM.TemplateScope); 274d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (LM.TemplateScope) 275d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnReenterTemplateScope(getCurScope(), LM.D); 276d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 277d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Save the current token position. 278d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor SourceLocation origLoc = Tok.getLocation(); 279d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 280d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor assert(!LM.Toks.empty() && "Empty body!"); 281d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Append the current token at the end of the new token stream so that it 282d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // doesn't get lost. 283d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor LM.Toks.push_back(Tok); 284d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor PP.EnterTokenStream(LM.Toks.data(), LM.Toks.size(), true, false); 285d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 286d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Consume the previously pushed token. 287d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ConsumeAnyToken(); 288d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor assert((Tok.is(tok::l_brace) || Tok.is(tok::colon) || Tok.is(tok::kw_try)) 289d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor && "Inline method not starting with '{', ':' or 'try'"); 290d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 291d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Parse the method body. Function body parsing code is similar enough 292d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // to be re-used for method bodies as well. 293d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ParseScope FnScope(this, Scope::FnScope|Scope::DeclScope); 294d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnStartOfFunctionDef(getCurScope(), LM.D); 295d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 296d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (Tok.is(tok::kw_try)) { 297c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor ParseFunctionTryBlock(LM.D, FnScope); 298d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor assert(!PP.getSourceManager().isBeforeInTranslationUnit(origLoc, 299d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Tok.getLocation()) && 300d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor "ParseFunctionTryBlock went over the cached tokens!"); 301d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // There could be leftover tokens (e.g. because of an error). 302d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Skip through until we reach the original token position. 303d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor while (Tok.getLocation() != origLoc && Tok.isNot(tok::eof)) 304d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ConsumeAnyToken(); 305d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor return; 306d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor } 307d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (Tok.is(tok::colon)) { 308d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor ParseConstructorInitializer(LM.D); 3094cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 310d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Error recovery. 311d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (!Tok.is(tok::l_brace)) { 312c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor FnScope.Exit(); 313d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnFinishFunctionBody(LM.D, 0); 314d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor return; 315d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor } 316d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor } else 317d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor Actions.ActOnDefaultCtorInitializers(LM.D); 318d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 319c9977d09a2de7f7d2245973413d4caf86c736640Douglas Gregor ParseFunctionStatementBody(LM.D, FnScope); 320d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor 321d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (Tok.getLocation() != origLoc) { 322d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Due to parsing error, we either went over the cached tokens or 323d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // there are still cached tokens left. If it's the latter case skip the 324d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // leftover tokens. 325d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // Since this is an uncommon situation that should be avoided, use the 326d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor // expensive isBeforeInTranslationUnit call. 327d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor if (PP.getSourceManager().isBeforeInTranslationUnit(Tok.getLocation(), 328d54eb4410330383f48d3cc22b2ad8d23f120836bDouglas Gregor origLoc)) 3298f9359f5ae1227f3b489d1d261225d8180b64ed3Argyrios Kyrtzidis while (Tok.getLocation() != origLoc && Tok.isNot(tok::eof)) 3307558cd00a5ac620990174f3cba86aea4bd9a000aArgyrios Kyrtzidis ConsumeAnyToken(); 3317558cd00a5ac620990174f3cba86aea4bd9a000aArgyrios Kyrtzidis 3324cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis } 3334cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis} 3344cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 3354cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis/// ConsumeAndStoreUntil - Consume and store the token at the passed token 33672b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor/// container until the token 'T' is reached (which gets 3371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// consumed/stored too, if ConsumeFinalToken). 33814b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis/// If StopAtSemi is true, then we will stop early at a ';' character. 33972b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor/// Returns true if token 'T1' or 'T2' was found. 3404cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis/// NOTE: This is a specialized version of Parser::SkipUntil. 34172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregorbool Parser::ConsumeAndStoreUntil(tok::TokenKind T1, tok::TokenKind T2, 34272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor CachedTokens &Toks, 34314b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis bool StopAtSemi, bool ConsumeFinalToken) { 3444cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // We always want this function to consume at least one token if the first 3454cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // token isn't T and if not at EOF. 3464cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis bool isFirstTokenConsumed = true; 3474cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis while (1) { 3484cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // If we found one of the tokens, stop and return true. 34972b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor if (Tok.is(T1) || Tok.is(T2)) { 35072b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor if (ConsumeFinalToken) { 35172b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor Toks.push_back(Tok); 35272b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor ConsumeAnyToken(); 35372b505b7904b3c9320a1312998800ba76e4f5841Douglas Gregor } 3544cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis return true; 3554cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis } 3564cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 3574cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis switch (Tok.getKind()) { 3584cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::eof: 3594cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // Ran out of tokens. 3604cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis return false; 3614cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 3624cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::l_paren: 3634cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // Recursively consume properly-nested parens. 3644cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Toks.push_back(Tok); 3654cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis ConsumeParen(); 36614b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis ConsumeAndStoreUntil(tok::r_paren, Toks, /*StopAtSemi=*/false); 3674cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis break; 3684cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::l_square: 3694cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // Recursively consume properly-nested square brackets. 3704cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Toks.push_back(Tok); 3714cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis ConsumeBracket(); 37214b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis ConsumeAndStoreUntil(tok::r_square, Toks, /*StopAtSemi=*/false); 3734cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis break; 3744cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::l_brace: 3754cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // Recursively consume properly-nested braces. 3764cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Toks.push_back(Tok); 3774cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis ConsumeBrace(); 37814b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis ConsumeAndStoreUntil(tok::r_brace, Toks, /*StopAtSemi=*/false); 3794cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis break; 3804cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 3814cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // Okay, we found a ']' or '}' or ')', which we think should be balanced. 3824cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // Since the user wasn't looking for this token (if they were, it would 3834cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // already be handled), this isn't balanced. If there is a LHS token at a 3844cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // higher level, we will assume that this matches the unbalanced token 3854cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // and return it. Otherwise, this is a spurious RHS token, which we skip. 3864cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::r_paren: 3874cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis if (ParenCount && !isFirstTokenConsumed) 3884cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis return false; // Matches something. 3894cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Toks.push_back(Tok); 3904cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis ConsumeParen(); 3914cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis break; 3924cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::r_square: 3934cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis if (BracketCount && !isFirstTokenConsumed) 3944cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis return false; // Matches something. 3954cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Toks.push_back(Tok); 3964cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis ConsumeBracket(); 3974cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis break; 3984cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::r_brace: 3994cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis if (BraceCount && !isFirstTokenConsumed) 4004cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis return false; // Matches something. 4014cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Toks.push_back(Tok); 4024cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis ConsumeBrace(); 4034cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis break; 4044cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis 4054cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::string_literal: 4064cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis case tok::wide_string_literal: 4074cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Toks.push_back(Tok); 4084cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis ConsumeStringToken(); 4094cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis break; 41014b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis case tok::semi: 41114b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis if (StopAtSemi) 41214b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis return false; 41314b91628961ab50cc6e724bbcd408fdee100662dArgyrios Kyrtzidis // FALL THROUGH. 4144cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis default: 4154cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis // consume this token. 4164cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis Toks.push_back(Tok); 4174cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis ConsumeToken(); 4184cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis break; 4194cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis } 4204cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis isFirstTokenConsumed = false; 4214cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis } 4224cc18a4d5222e04bd568b1e3e4d86127dbbcdf3fArgyrios Kyrtzidis} 423