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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/Parse/ParseAST.h"
#include "clang/Sema/Sema.h"
#include "clang/Sema/CodeCompleteConsumer.h"
#include "clang/Sema/SemaConsumer.h"
#include "clang/Sema/ExternalSemaSource.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/ExternalASTSource.h"
#include "clang/AST/Stmt.h"
#include "clang/Parse/Parser.h"
#include <cstdio>
using namespace clang;
static void DumpRecordLayouts(ASTContext &C) {
for (ASTContext::type_iterator I = C.types_begin(), E = C.types_end();
I != E; ++I) {
const RecordType *RT = dyn_cast<RecordType>(*I);
if (!RT)
continue;
const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl());
if (!RD || RD->isImplicit() || RD->isDependentType() ||
RD->isInvalidDecl() || !RD->getDefinition())
continue;
// FIXME: Do we really need to hard code this?
if (RD->getQualifiedNameAsString() == "__va_list_tag")
continue;
C.DumpRecordLayout(RD, llvm::errs());
}
}
//===----------------------------------------------------------------------===//
// Public interface to the file
//===----------------------------------------------------------------------===//
/// ParseAST - Parse the entire file specified, notifying the ASTConsumer as
/// the file is parsed. This inserts the parsed decls into the translation unit
/// held by Ctx.
///
void clang::ParseAST(Preprocessor &PP, ASTConsumer *Consumer,
ASTContext &Ctx, bool PrintStats,
bool CompleteTranslationUnit,
CodeCompleteConsumer *CompletionConsumer) {
Sema S(PP, Ctx, *Consumer, CompleteTranslationUnit, CompletionConsumer);
ParseAST(S, PrintStats);
}
void clang::ParseAST(Sema &S, bool PrintStats) {
// Collect global stats on Decls/Stmts (until we have a module streamer).
if (PrintStats) {
Decl::CollectingStats(true);
Stmt::CollectingStats(true);
}
ASTConsumer *Consumer = &S.getASTConsumer();
Parser P(S.getPreprocessor(), S);
S.getPreprocessor().EnterMainSourceFile();
P.Initialize();
S.Initialize();
if (ExternalASTSource *External = S.getASTContext().getExternalSource())
External->StartTranslationUnit(Consumer);
Parser::DeclGroupPtrTy 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)
Consumer->HandleTopLevelDecl(ADecl.get());
};
// Check for any pending objective-c implementation decl.
while ((ADecl = P.FinishPendingObjCActions()))
Consumer->HandleTopLevelDecl(ADecl.get());
// Process any TopLevelDecls generated by #pragma weak.
for (llvm::SmallVector<Decl*,2>::iterator
I = S.WeakTopLevelDecls().begin(),
E = S.WeakTopLevelDecls().end(); I != E; ++I)
Consumer->HandleTopLevelDecl(DeclGroupRef(*I));
// Dump record layouts, if requested.
if (S.getLangOptions().DumpRecordLayouts)
DumpRecordLayouts(S.getASTContext());
Consumer->HandleTranslationUnit(S.getASTContext());
if (PrintStats) {
fprintf(stderr, "\nSTATISTICS:\n");
P.getActions().PrintStats();
S.getASTContext().PrintStats();
Decl::PrintStats();
Stmt::PrintStats();
Consumer->PrintStats();
}
}
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