Add an initial framework of a DeclContextPrinter. It can print DeclContext and

its Decls in indented format. An Example:

$ cat t.cpp
class A {
  int a;
  void f();
};
void A::f() {
  a = 3;
}

$ clang -print-decl-contexts t.cpp
[translation unit] 0x9754d7c
    <typedef> __builtin_va_list
    [class] A 0x9753310
        <class> A 0x975ce20
        <field> a
        <c++ method> f
        <c++ ctor> A
        <c++ ctor> A
        <c++ method> operator=
        <c++ dtor> ~A
    [c++ method] f [[0x9753310]]

Some comments: '<>' indicates a declaration, '[]' indicates a definition, '[[
]]' displays the semantic DeclContext which is different from the lexical
DeclContext.  The symbols printed can definitely be changed in the future.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62136 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/Driver/clang.cpp b/Driver/clang.cpp
index 51b1335f9c..5f3a554dbb 100644
--- a/Driver/clang.cpp
+++ b/Driver/clang.cpp
@@ -83,6 +83,7 @@ enum ProgActions {
   ASTPrint,                     // Parse ASTs and print them.
   ASTDump,                      // Parse ASTs and dump them.
   ASTView,                      // Parse ASTs and view them in Graphviz.
+  PrintDeclContext,             // Print DeclContext and their Decls.
   TestSerialization,            // Run experimental serialization code.
   ParsePrintCallbacks,          // Parse and print each callback.
   ParseSyntaxOnly,              // Parse and perform semantic analysis.
@@ -122,6 +123,8 @@ ProgAction(llvm::cl::desc("Choose output type:"), llvm::cl::ZeroOrMore,
                         "Build ASTs and then debug dump them"),
              clEnumValN(ASTView, "ast-view",
                         "Build ASTs and view them with GraphViz"),
+             clEnumValN(PrintDeclContext, "print-decl-contexts",
+                        "Print DeclContexts and their Decls."),
              clEnumValN(TestSerialization, "test-pickling",
                         "Run prototype serialization code"),
              clEnumValN(EmitAssembly, "S",
@@ -1245,6 +1248,9 @@ static ASTConsumer* CreateASTConsumer(const std::string& InFile,
       
     case ASTView:
       return CreateASTViewer();   
+
+    case PrintDeclContext:
+      return CreateDeclContextPrinter();
       
     case EmitHTML:
       return CreateHTMLPrinter(OutputFile, Diag, PP, PPF);