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ce20e8fe8d
1) Sema::ParseAST now constructs a TranslationUnit object to own the top-level Decls, which releases the top-level Decls upon exiting ParseAST. 2) Bug fix: TranslationUnit::~TranslationUnit handles the case where a Decl is added more than once as a top-level Decl. 3) Decl::Destroy is now a virtual method, obviating the need for a special dispatch based on DeclKind. 3) FunctionDecl::Destroy now releases its Body using its Destroy method. 4) Added Stmt::Destroy and Stmt::DestroyChildren, which recursively delete the child ASTs of a Stmt and call their dstors. We may need to special case dstor/Destroy methods for particular Stmt subclasses that own other dynamically allocated objects besides AST nodes. 5) REGRESSION: We temporarily are not deallocating attributes; a FIXME is provided. llvm-svn: 51286
77 lines
2.4 KiB
C++
77 lines
2.4 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 "clang/AST/ASTContext.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/TranslationUnit.h"
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#include "Sema.h"
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#include "clang/Parse/Action.h"
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#include "clang/Parse/Parser.h"
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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 takes ownership of the ASTConsumer and
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/// ultimately deletes it.
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void clang::ParseAST(Preprocessor &PP, ASTConsumer *Consumer, bool PrintStats) {
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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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ASTContext Context(PP.getSourceManager(), PP.getTargetInfo(),
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PP.getIdentifierTable(), PP.getSelectorTable());
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TranslationUnit TU(Context, PP.getLangOptions());
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Parser P(PP, *new Sema(PP, Context, *Consumer));
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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(Context);
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Parser::DeclTy *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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Decl* D = static_cast<Decl*>(ADecl);
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TU.AddTopLevelDecl(D); // TranslationUnit now owns the Decl.
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Consumer->HandleTopLevelDecl(D);
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}
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};
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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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Context.PrintStats();
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Decl::PrintStats();
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Stmt::PrintStats();
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Consumer->PrintStats();
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Decl::CollectingStats(false);
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Stmt::CollectingStats(false);
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}
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delete Consumer;
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}
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