зеркало из https://github.com/microsoft/clang-1.git
102 строки
3.3 KiB
C++
102 строки
3.3 KiB
C++
//===--- ParseAST.cpp - Provide the clang::ParseAST method ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the clang::ParseAST method.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Sema/ParseAST.h"
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#include "Sema.h"
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#include "clang/Sema/CodeCompleteConsumer.h"
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#include "clang/Sema/SemaConsumer.h"
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#include "clang/Sema/ExternalSemaSource.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ExternalASTSource.h"
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#include "clang/AST/Stmt.h"
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#include "clang/Parse/Parser.h"
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#include <cstdio>
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// Public interface to the file
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//===----------------------------------------------------------------------===//
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/// ParseAST - Parse the entire file specified, notifying the ASTConsumer as
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/// the file is parsed. This inserts the parsed decls into the translation unit
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/// held by Ctx.
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///
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void clang::ParseAST(Preprocessor &PP, ASTConsumer *Consumer,
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ASTContext &Ctx, bool PrintStats,
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bool CompleteTranslationUnit,
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CodeCompleteConsumer *CompletionConsumer) {
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// Collect global stats on Decls/Stmts (until we have a module streamer).
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if (PrintStats) {
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Decl::CollectingStats(true);
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Stmt::CollectingStats(true);
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}
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Sema S(PP, Ctx, *Consumer, CompleteTranslationUnit, CompletionConsumer);
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Parser P(PP, S);
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PP.EnterMainSourceFile();
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// Initialize the parser.
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P.Initialize();
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Consumer->Initialize(Ctx);
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if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumer))
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SC->InitializeSema(S);
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if (ExternalASTSource *External = Ctx.getExternalSource()) {
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if (ExternalSemaSource *ExternalSema =
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dyn_cast<ExternalSemaSource>(External))
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ExternalSema->InitializeSema(S);
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External->StartTranslationUnit(Consumer);
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}
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Parser::DeclGroupPtrTy ADecl;
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while (!P.ParseTopLevelDecl(ADecl)) { // Not end of file.
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// If we got a null return and something *was* parsed, ignore it. This
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// is due to a top-level semicolon, an action override, or a parse error
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// skipping something.
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if (ADecl)
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Consumer->HandleTopLevelDecl(ADecl.getAsVal<DeclGroupRef>());
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};
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// Check for any pending objective-c implementation decl.
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while ((ADecl = P.RetrievePendingObjCImpDecl()))
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Consumer->HandleTopLevelDecl(ADecl.getAsVal<DeclGroupRef>());
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// Process any TopLevelDecls generated by #pragma weak.
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for (llvm::SmallVector<Decl*,2>::iterator
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I = S.WeakTopLevelDecls().begin(),
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E = S.WeakTopLevelDecls().end(); I != E; ++I)
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Consumer->HandleTopLevelDecl(DeclGroupRef(*I));
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Consumer->HandleTranslationUnit(Ctx);
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if (ExternalSemaSource *ESS =
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dyn_cast_or_null<ExternalSemaSource>(Ctx.getExternalSource()))
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ESS->ForgetSema();
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if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumer))
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SC->ForgetSema();
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if (PrintStats) {
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fprintf(stderr, "\nSTATISTICS:\n");
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P.getActions().PrintStats();
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Ctx.PrintStats();
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Decl::PrintStats();
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Stmt::PrintStats();
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Consumer->PrintStats();
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}
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}
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