forked from OSchip/llvm-project
572 lines
23 KiB
C++
572 lines
23 KiB
C++
//===--- PrintParserActions.cpp - Implement -parse-print-callbacks mode ---===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This code simply runs the preprocessor on the input file and prints out the
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// result. This is the traditional behavior of the -E option.
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//
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//===----------------------------------------------------------------------===//
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#include "clang.h"
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#include "clang/Parse/Action.h"
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#include "clang/Parse/DeclSpec.h"
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#include "llvm/Support/Streams.h"
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using namespace clang;
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namespace {
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class ParserPrintActions : public MinimalAction {
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public:
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ParserPrintActions(IdentifierTable &IT) : MinimalAction(IT) {}
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// Printing Functions which also must call MinimalAction
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/// ActOnDeclarator - This callback is invoked when a declarator is parsed
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/// and 'Init' specifies the initializer if any. This is for things like:
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/// "int X = 4" or "typedef int foo".
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virtual DeclTy *ActOnDeclarator(Scope *S, Declarator &D,
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DeclTy *LastInGroup) {
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llvm::cout << __FUNCTION__ << " ";
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if (IdentifierInfo *II = D.getIdentifier()) {
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llvm::cout << "'" << II->getName() << "'";
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} else {
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llvm::cout << "<anon>";
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}
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llvm::cout << "\n";
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// Pass up to EmptyActions so that the symbol table is maintained right.
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return MinimalAction::ActOnDeclarator(S, D, LastInGroup);
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}
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/// ActOnPopScope - This callback is called immediately before the specified
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/// scope is popped and deleted.
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virtual void ActOnPopScope(SourceLocation Loc, Scope *S) {
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llvm::cout << __FUNCTION__ << "\n";
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return MinimalAction::ActOnPopScope(Loc, S);
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}
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/// ActOnTranslationUnitScope - This callback is called once, immediately
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/// after creating the translation unit scope (in Parser::Initialize).
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virtual void ActOnTranslationUnitScope(SourceLocation Loc, Scope *S) {
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llvm::cout << __FUNCTION__ << "\n";
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MinimalAction::ActOnTranslationUnitScope(Loc, S);
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}
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Action::DeclTy *ActOnStartClassInterface(SourceLocation AtInterfaceLoc,
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IdentifierInfo *ClassName,
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SourceLocation ClassLoc,
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IdentifierInfo *SuperName,
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SourceLocation SuperLoc,
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DeclTy * const *ProtoRefs,
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unsigned NumProtocols,
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SourceLocation EndProtoLoc,
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AttributeList *AttrList) {
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llvm::cout << __FUNCTION__ << "\n";
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return MinimalAction::ActOnStartClassInterface(AtInterfaceLoc,
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ClassName, ClassLoc,
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SuperName, SuperLoc,
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ProtoRefs, NumProtocols,
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EndProtoLoc, AttrList);
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}
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/// ActOnForwardClassDeclaration -
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/// Scope will always be top level file scope.
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Action::DeclTy *ActOnForwardClassDeclaration(SourceLocation AtClassLoc,
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IdentifierInfo **IdentList,
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unsigned NumElts) {
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llvm::cout << __FUNCTION__ << "\n";
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return MinimalAction::ActOnForwardClassDeclaration(AtClassLoc, IdentList,
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NumElts);
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}
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// Pure Printing
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/// ActOnParamDeclarator - This callback is invoked when a parameter
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/// declarator is parsed. This callback only occurs for functions
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/// with prototypes. S is the function prototype scope for the
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/// parameters (C++ [basic.scope.proto]).
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virtual DeclTy *ActOnParamDeclarator(Scope *S, Declarator &D) {
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llvm::cout << __FUNCTION__ << " ";
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if (IdentifierInfo *II = D.getIdentifier()) {
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llvm::cout << "'" << II->getName() << "'";
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} else {
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llvm::cout << "<anon>";
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}
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llvm::cout << "\n";
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return 0;
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}
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/// AddInitializerToDecl - This action is called immediately after
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/// ParseDeclarator (when an initializer is present). The code is factored
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/// this way to make sure we are able to handle the following:
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/// void func() { int xx = xx; }
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/// This allows ActOnDeclarator to register "xx" prior to parsing the
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/// initializer. The declaration above should still result in a warning,
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/// since the reference to "xx" is uninitialized.
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virtual void AddInitializerToDecl(DeclTy *Dcl, ExprTy *Init) {
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llvm::cout << __FUNCTION__ << "\n";
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}
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/// FinalizeDeclaratorGroup - After a sequence of declarators are parsed, this
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/// gives the actions implementation a chance to process the group as a whole.
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virtual DeclTy *FinalizeDeclaratorGroup(Scope *S, DeclTy *Group) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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/// ActOnStartOfFunctionDef - This is called at the start of a function
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/// definition, instead of calling ActOnDeclarator. The Declarator includes
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/// information about formal arguments that are part of this function.
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virtual DeclTy *ActOnStartOfFunctionDef(Scope *FnBodyScope, Declarator &D) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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/// ActOnStartOfFunctionDef - This is called at the start of a function
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/// definition, after the FunctionDecl has already been created.
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virtual DeclTy *ActOnStartOfFunctionDef(Scope *FnBodyScope, DeclTy *D) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual void ObjCActOnStartOfMethodDef(Scope *FnBodyScope, DeclTy *D) {
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llvm::cout << __FUNCTION__ << "\n";
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}
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/// ActOnFunctionDefBody - This is called when a function body has completed
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/// parsing. Decl is the DeclTy returned by ParseStartOfFunctionDef.
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virtual DeclTy *ActOnFinishFunctionBody(DeclTy *Decl, StmtTy *Body) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual DeclTy *ActOnFileScopeAsmDecl(SourceLocation Loc, ExprTy *AsmString) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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/// ParsedFreeStandingDeclSpec - This method is invoked when a declspec with
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/// no declarator (e.g. "struct foo;") is parsed.
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virtual DeclTy *ParsedFreeStandingDeclSpec(Scope *S, DeclSpec &DS) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual DeclTy *ActOnLinkageSpec(SourceLocation Loc, SourceLocation LBrace,
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SourceLocation RBrace, const char *Lang,
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unsigned StrSize, DeclTy *D) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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//===--------------------------------------------------------------------===//
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// Type Parsing Callbacks.
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//===--------------------------------------------------------------------===//
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virtual TypeResult ActOnTypeName(Scope *S, Declarator &D) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual DeclTy *ActOnTag(Scope *S, unsigned TagType, TagKind TK,
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SourceLocation KWLoc, IdentifierInfo *Name,
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SourceLocation NameLoc, AttributeList *Attr) {
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// TagType is an instance of DeclSpec::TST, indicating what kind of tag this
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// is (struct/union/enum/class).
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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/// Act on @defs() element found when parsing a structure. ClassName is the
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/// name of the referenced class.
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virtual void ActOnDefs(Scope *S, SourceLocation DeclStart,
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IdentifierInfo *ClassName,
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llvm::SmallVectorImpl<DeclTy*> &Decls) {
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llvm::cout << __FUNCTION__ << "\n";
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}
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virtual DeclTy *ActOnField(Scope *S, SourceLocation DeclStart,
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Declarator &D, ExprTy *BitfieldWidth) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual DeclTy *ActOnIvar(Scope *S, SourceLocation DeclStart,
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Declarator &D, ExprTy *BitfieldWidth,
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tok::ObjCKeywordKind visibility) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual void ActOnFields(Scope* S, SourceLocation RecLoc, DeclTy *TagDecl,
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DeclTy **Fields, unsigned NumFields,
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SourceLocation LBrac, SourceLocation RBrac) {
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llvm::cout << __FUNCTION__ << "\n";
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}
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virtual DeclTy *ActOnEnumConstant(Scope *S, DeclTy *EnumDecl,
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DeclTy *LastEnumConstant,
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SourceLocation IdLoc, IdentifierInfo *Id,
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SourceLocation EqualLoc, ExprTy *Val) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual void ActOnEnumBody(SourceLocation EnumLoc, DeclTy *EnumDecl,
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DeclTy **Elements, unsigned NumElements) {
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llvm::cout << __FUNCTION__ << "\n";
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}
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//===--------------------------------------------------------------------===//
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// Statement Parsing Callbacks.
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//===--------------------------------------------------------------------===//
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virtual StmtResult ActOnNullStmt(SourceLocation SemiLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnCompoundStmt(SourceLocation L, SourceLocation R,
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StmtTy **Elts, unsigned NumElts,
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bool isStmtExpr) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnDeclStmt(DeclTy *Decl, SourceLocation StartLoc,
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SourceLocation EndLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnExprStmt(ExprTy *Expr) {
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llvm::cout << __FUNCTION__ << "\n";
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return StmtResult(Expr);
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}
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/// ActOnCaseStmt - Note that this handles the GNU 'case 1 ... 4' extension,
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/// which can specify an RHS value.
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virtual StmtResult ActOnCaseStmt(SourceLocation CaseLoc, ExprTy *LHSVal,
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SourceLocation DotDotDotLoc, ExprTy *RHSVal,
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SourceLocation ColonLoc, StmtTy *SubStmt) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnDefaultStmt(SourceLocation DefaultLoc,
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SourceLocation ColonLoc, StmtTy *SubStmt,
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Scope *CurScope){
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnLabelStmt(SourceLocation IdentLoc, IdentifierInfo *II,
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SourceLocation ColonLoc, StmtTy *SubStmt) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnIfStmt(SourceLocation IfLoc, ExprTy *CondVal,
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StmtTy *ThenVal, SourceLocation ElseLoc,
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StmtTy *ElseVal) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnStartOfSwitchStmt(ExprTy *Cond) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnFinishSwitchStmt(SourceLocation SwitchLoc,
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StmtTy *Switch, ExprTy *Body) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnWhileStmt(SourceLocation WhileLoc, ExprTy *Cond,
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StmtTy *Body) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnDoStmt(SourceLocation DoLoc, StmtTy *Body,
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SourceLocation WhileLoc, ExprTy *Cond) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnForStmt(SourceLocation ForLoc,
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SourceLocation LParenLoc,
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StmtTy *First, ExprTy *Second, ExprTy *Third,
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SourceLocation RParenLoc, StmtTy *Body) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnObjCForCollectionStmt(SourceLocation ForColLoc,
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SourceLocation LParenLoc,
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StmtTy *First, ExprTy *Second,
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SourceLocation RParenLoc, StmtTy *Body) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnGotoStmt(SourceLocation GotoLoc,
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SourceLocation LabelLoc,
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IdentifierInfo *LabelII) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnIndirectGotoStmt(SourceLocation GotoLoc,
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SourceLocation StarLoc,
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ExprTy *DestExp) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnContinueStmt(SourceLocation ContinueLoc,
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Scope *CurScope) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnBreakStmt(SourceLocation GotoLoc, Scope *CurScope) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnReturnStmt(SourceLocation ReturnLoc,
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ExprTy *RetValExp) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnAsmStmt(SourceLocation AsmLoc,
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bool IsSimple,
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bool IsVolatile,
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unsigned NumOutputs,
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unsigned NumInputs,
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std::string *Names,
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ExprTy **Constraints,
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ExprTy **Exprs,
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ExprTy *AsmString,
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unsigned NumClobbers,
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ExprTy **Clobbers,
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SourceLocation RParenLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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// Objective-c statements
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virtual StmtResult ActOnObjCAtCatchStmt(SourceLocation AtLoc,
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SourceLocation RParen, StmtTy *Parm,
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StmtTy *Body, StmtTy *CatchList) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnObjCAtFinallyStmt(SourceLocation AtLoc,
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StmtTy *Body) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnObjCAtTryStmt(SourceLocation AtLoc,
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StmtTy *Try,
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StmtTy *Catch, StmtTy *Finally) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnObjCAtThrowStmt(SourceLocation AtLoc,
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StmtTy *Throw) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual StmtResult ActOnObjCAtSynchronizedStmt(SourceLocation AtLoc,
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ExprTy *SynchExpr,
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StmtTy *SynchBody) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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//===--------------------------------------------------------------------===//
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// Expression Parsing Callbacks.
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//===--------------------------------------------------------------------===//
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// Primary Expressions.
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/// ActOnIdentifierExpr - Parse an identifier in expression context.
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/// 'HasTrailingLParen' indicates whether or not the identifier has a '('
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/// token immediately after it.
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virtual ExprResult ActOnIdentifierExpr(Scope *S, SourceLocation Loc,
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IdentifierInfo &II,
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bool HasTrailingLParen) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnPreDefinedExpr(SourceLocation Loc,
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tok::TokenKind Kind) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnCharacterConstant(const Token &) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnNumericConstant(const Token &) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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/// ActOnStringLiteral - The specified tokens were lexed as pasted string
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/// fragments (e.g. "foo" "bar" L"baz").
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virtual ExprResult ActOnStringLiteral(const Token *Toks, unsigned NumToks) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnParenExpr(SourceLocation L, SourceLocation R,
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ExprTy *Val) {
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llvm::cout << __FUNCTION__ << "\n";
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return Val; // Default impl returns operand.
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}
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// Postfix Expressions.
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virtual ExprResult ActOnPostfixUnaryOp(SourceLocation OpLoc,
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tok::TokenKind Kind, ExprTy *Input) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnArraySubscriptExpr(ExprTy *Base, SourceLocation LLoc,
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ExprTy *Idx, SourceLocation RLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnMemberReferenceExpr(ExprTy *Base,SourceLocation OpLoc,
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tok::TokenKind OpKind,
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SourceLocation MemberLoc,
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IdentifierInfo &Member) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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/// ActOnCallExpr - Handle a call to Fn with the specified array of arguments.
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/// This provides the location of the left/right parens and a list of comma
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/// locations. There are guaranteed to be one fewer commas than arguments,
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/// unless there are zero arguments.
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virtual ExprResult ActOnCallExpr(ExprTy *Fn, SourceLocation LParenLoc,
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ExprTy **Args, unsigned NumArgs,
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SourceLocation *CommaLocs,
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SourceLocation RParenLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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// Unary Operators. 'Tok' is the token for the operator.
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virtual ExprResult ActOnUnaryOp(SourceLocation OpLoc, tok::TokenKind Op,
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ExprTy *Input) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult
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ActOnSizeOfAlignOfTypeExpr(SourceLocation OpLoc, bool isSizeof,
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SourceLocation LParenLoc, TypeTy *Ty,
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SourceLocation RParenLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnCompoundLiteral(SourceLocation LParen, TypeTy *Ty,
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SourceLocation RParen, ExprTy *Op) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnInitList(SourceLocation LParenLoc,
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ExprTy **InitList, unsigned NumInit,
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SourceLocation RParenLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnCastExpr(SourceLocation LParenLoc, TypeTy *Ty,
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SourceLocation RParenLoc, ExprTy *Op) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnBinOp(SourceLocation TokLoc, tok::TokenKind Kind,
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ExprTy *LHS, ExprTy *RHS) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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/// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null
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/// in the case of a the GNU conditional expr extension.
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virtual ExprResult ActOnConditionalOp(SourceLocation QuestionLoc,
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SourceLocation ColonLoc,
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ExprTy *Cond, ExprTy *LHS, ExprTy *RHS){
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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//===---------------------- GNU Extension Expressions -------------------===//
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virtual ExprResult ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc,
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IdentifierInfo *LabelII) { // "&&foo"
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnStmtExpr(SourceLocation LPLoc, StmtTy *SubStmt,
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SourceLocation RPLoc) { // "({..})"
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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virtual ExprResult ActOnBuiltinOffsetOf(SourceLocation BuiltinLoc,
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SourceLocation TypeLoc, TypeTy *Arg1,
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OffsetOfComponent *CompPtr,
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unsigned NumComponents,
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SourceLocation RParenLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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// __builtin_types_compatible_p(type1, type2)
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virtual ExprResult ActOnTypesCompatibleExpr(SourceLocation BuiltinLoc,
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TypeTy *arg1, TypeTy *arg2,
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SourceLocation RPLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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// __builtin_choose_expr(constExpr, expr1, expr2)
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virtual ExprResult ActOnChooseExpr(SourceLocation BuiltinLoc,
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ExprTy *cond, ExprTy *expr1, ExprTy *expr2,
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SourceLocation RPLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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// __builtin_overload(...)
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virtual ExprResult ActOnOverloadExpr(ExprTy **Args, unsigned NumArgs,
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SourceLocation *CommaLocs,
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SourceLocation BuiltinLoc,
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SourceLocation RPLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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// __builtin_va_arg(expr, type)
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virtual ExprResult ActOnVAArg(SourceLocation BuiltinLoc,
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ExprTy *expr, TypeTy *type,
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SourceLocation RPLoc) {
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llvm::cout << __FUNCTION__ << "\n";
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return 0;
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}
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};
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}
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MinimalAction *clang::CreatePrintParserActionsAction(IdentifierTable &IT) {
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return new ParserPrintActions(IT);
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}
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