Make a major restructuring of the clang tree: introduce a top-level

lib dir and move all the libraries into it.  This follows the main
llvm tree, and allows the libraries to be built in parallel.  The
top level now enforces that all the libs are built before Driver,
but we don't care what order the libs are built in.  This speeds
up parallel builds, particularly incremental ones.

llvm-svn: 48402

1 files changed, 69 insertions, 0 deletions

diff --git a/clang/lib/Sema/ParseAST.cpp b/clang/lib/Sema/ParseAST.cpp
new file mode 100644
index 00000000000..364b0729100
--- /dev/null
+++ b/clang/lib/Sema/ParseAST.cpp
@@ -0,0 +1,69 @@
+//===--- 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/ASTContext.h"
+#include "clang/AST/ASTConsumer.h"
+#include "Sema.h"
+#include "clang/Parse/Action.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.
+void clang::ParseAST(Preprocessor &PP, ASTConsumer *Consumer, bool PrintStats) {
+  // Collect global stats on Decls/Stmts (until we have a module streamer).
+  if (PrintStats) {
+    Decl::CollectingStats(true);
+    Stmt::CollectingStats(true);
+  }
+  
+  ASTContext Context(PP.getSourceManager(), PP.getTargetInfo(),
+                     PP.getIdentifierTable(), PP.getSelectorTable());
+  
+  Parser P(PP, *new Sema(PP, Context, *Consumer));
+  PP.EnterMainSourceFile();
+    
+  // Initialize the parser.
+  P.Initialize();
+  
+  Consumer->Initialize(Context);
+  
+  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)
+      Consumer->HandleTopLevelDecl(static_cast<Decl*>(ADecl));
+  };
+
+  if (PrintStats) {
+    fprintf(stderr, "\nSTATISTICS:\n");
+    P.getActions().PrintStats();
+    Context.PrintStats();
+    Decl::PrintStats();
+    Stmt::PrintStats();
+    Consumer->PrintStats();
+    
+    Decl::CollectingStats(false);
+    Stmt::CollectingStats(false);
+  }
+  
+  delete Consumer;
+}