1 files changed, 114 insertions, 0 deletions
diff --git a/lib/Parse/ParseAST.cpp b/lib/Parse/ParseAST.cpp
new file mode 100644
index 000000000000..d02787941b0d
--- /dev/null
+++ b/lib/Parse/ParseAST.cpp
@@ -0,0 +1,114 @@
+//===--- 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();
+  }
+}