forked from OSchip/llvm-project
89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
//===--- ParseAST.cpp - Provide the clang::ParseAST method ----------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the clang::ParseAST method.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include <llvm/ADT/OwningPtr.h>
|
|
#include "clang/Sema/ParseAST.h"
|
|
#include "clang/AST/ASTConsumer.h"
|
|
#include "clang/AST/Stmt.h"
|
|
#include "clang/AST/TranslationUnit.h"
|
|
#include "Sema.h"
|
|
#include "clang/Parse/Parser.h"
|
|
using namespace clang;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Public interface to the file
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseAST - Parse the entire file specified, notifying the ASTConsumer as
|
|
/// the file is parsed.
|
|
///
|
|
/// \param TU If 0, then memory used for AST elements will be allocated only
|
|
/// for the duration of the ParseAST() call. In this case, the client should
|
|
/// not access any AST elements after ParseAST() returns.
|
|
void clang::ParseAST(Preprocessor &PP, ASTConsumer *Consumer,
|
|
TranslationUnit *TU, bool PrintStats) {
|
|
// Collect global stats on Decls/Stmts (until we have a module streamer).
|
|
if (PrintStats) {
|
|
Decl::CollectingStats(true);
|
|
Stmt::CollectingStats(true);
|
|
}
|
|
|
|
llvm::OwningPtr<ASTContext> ContextOwner;
|
|
llvm::OwningPtr<TranslationUnit> TranslationUnitOwner;
|
|
if (TU == 0) {
|
|
ASTContext *Context = new ASTContext(PP.getLangOptions(),
|
|
PP.getSourceManager(),
|
|
PP.getTargetInfo(),
|
|
PP.getIdentifierTable(),
|
|
PP.getSelectorTable());
|
|
ContextOwner.reset(Context);
|
|
TU = new TranslationUnit(*Context);
|
|
TranslationUnitOwner.reset(TU);
|
|
}
|
|
|
|
Sema S(PP, TU->getContext(), *Consumer);
|
|
Parser P(PP, S);
|
|
PP.EnterMainSourceFile();
|
|
|
|
// Initialize the parser.
|
|
P.Initialize();
|
|
|
|
Consumer->InitializeTU(*TU);
|
|
|
|
Parser::DeclTy *ADecl;
|
|
|
|
while (!P.ParseTopLevelDecl(ADecl)) { // Not end of file.
|
|
// If we got a null return and something *was* parsed, ignore it. This
|
|
// is due to a top-level semicolon, an action override, or a parse error
|
|
// skipping something.
|
|
if (ADecl) {
|
|
Decl* D = static_cast<Decl*>(ADecl);
|
|
Consumer->HandleTopLevelDecl(D);
|
|
}
|
|
};
|
|
|
|
Consumer->HandleTranslationUnit(*TU);
|
|
|
|
if (PrintStats) {
|
|
fprintf(stderr, "\nSTATISTICS:\n");
|
|
P.getActions().PrintStats();
|
|
TU->getContext().PrintStats();
|
|
Decl::PrintStats();
|
|
Stmt::PrintStats();
|
|
Consumer->PrintStats();
|
|
|
|
Decl::CollectingStats(false);
|
|
Stmt::CollectingStats(false);
|
|
}
|
|
}
|