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//===--- 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 "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. This takes ownership of the ASTConsumer and
/// ultimately deletes it.
///
/// \param FreeMemory If false, the memory used for AST elements is
/// not released.
void clang::ParseAST(Preprocessor &PP, ASTConsumer *Consumer,
bool PrintStats, bool FreeMemory) {
// Collect global stats on Decls/Stmts (until we have a module streamer).
if (PrintStats) {
Decl::CollectingStats(true);
Stmt::CollectingStats(true);
}
ASTContext *Context =
new ASTContext(PP.getLangOptions(), PP.getSourceManager(),
PP.getTargetInfo(),
PP.getIdentifierTable(), PP.getSelectorTable());
TranslationUnit *TU = new TranslationUnit(*Context);
Sema S(PP, *Context, *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);
TU->AddTopLevelDecl(D); // TranslationUnit now owns the Decl.
Consumer->HandleTopLevelDecl(D);
}
};
Consumer->HandleTranslationUnit(*TU);
if (PrintStats) {
fprintf(stderr, "\nSTATISTICS:\n");
P.getActions().PrintStats();
Context->PrintStats();
Decl::PrintStats();
Stmt::PrintStats();
Consumer->PrintStats();
Decl::CollectingStats(false);
Stmt::CollectingStats(false);
}
if (FreeMemory) {
delete TU;
delete Context;
}
}
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