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//===- CXCursor.cpp - Routines for manipulating CXCursors -----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines routines for manipulating CXCursors. It should be the
// only file that has internal knowledge of the encoding of the data in
// CXCursor.
//
//===----------------------------------------------------------------------===//
#include "CXCursor.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Expr.h"
#include "llvm/Support/ErrorHandling.h"
using namespace clang;
CXCursor cxcursor::MakeCXCursor(CXCursorKind K, Decl *D) {
CXCursor C = { K, { D, 0, 0 } };
return C;
}
CXCursor cxcursor::MakeCXCursor(CXCursorKind K, Decl *D, Stmt *S) {
assert(clang_isReference(K));
CXCursor C = { K, { D, S, 0 } };
return C;
}
static CXCursorKind GetCursorKind(Decl *D) {
switch (D->getKind()) {
case Decl::Enum: return CXCursor_EnumDecl;
case Decl::EnumConstant: return CXCursor_EnumConstantDecl;
case Decl::Field: return CXCursor_FieldDecl;
case Decl::Function:
return cast<FunctionDecl>(D)->isThisDeclarationADefinition()
? CXCursor_FunctionDefn : CXCursor_FunctionDecl;
case Decl::ObjCCategory: return CXCursor_ObjCCategoryDecl;
case Decl::ObjCCategoryImpl: return CXCursor_ObjCCategoryDefn;
case Decl::ObjCClass:
// FIXME
return CXCursor_NotImplemented;
case Decl::ObjCImplementation: return CXCursor_ObjCClassDefn;
case Decl::ObjCInterface: return CXCursor_ObjCInterfaceDecl;
case Decl::ObjCIvar: return CXCursor_ObjCIvarDecl;
case Decl::ObjCMethod:
return cast<ObjCMethodDecl>(D)->isInstanceMethod()
? CXCursor_ObjCInstanceMethodDecl : CXCursor_ObjCClassMethodDecl;
case Decl::ObjCProperty: return CXCursor_ObjCPropertyDecl;
case Decl::ObjCProtocol: return CXCursor_ObjCProtocolDecl;
case Decl::ParmVar: return CXCursor_ParmDecl;
case Decl::Typedef: return CXCursor_TypedefDecl;
case Decl::Var: return CXCursor_VarDecl;
default:
if (TagDecl *TD = dyn_cast<TagDecl>(D)) {
switch (TD->getTagKind()) {
case TagDecl::TK_struct: return CXCursor_StructDecl;
case TagDecl::TK_class: return CXCursor_ClassDecl;
case TagDecl::TK_union: return CXCursor_UnionDecl;
case TagDecl::TK_enum: return CXCursor_EnumDecl;
}
}
}
llvm_unreachable("Invalid Decl");
return CXCursor_NotImplemented;
}
CXCursor cxcursor::MakeCXCursor(Decl *D) {
return MakeCXCursor(GetCursorKind(D), D);
}
CXCursor cxcursor::MakeCursorObjCSuperClassRef(ObjCInterfaceDecl *Super,
SourceLocation Loc) {
void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
CXCursor C = { CXCursor_ObjCSuperClassRef, { Super, RawLoc, 0 } };
return C;
}
std::pair<ObjCInterfaceDecl *, SourceLocation>
cxcursor::getCursorObjCSuperClassRef(CXCursor C) {
assert(C.kind == CXCursor_ObjCSuperClassRef);
return std::make_pair(static_cast<ObjCInterfaceDecl *>(C.data[0]),
SourceLocation::getFromRawEncoding(
reinterpret_cast<uintptr_t>(C.data[1])));
}
CXCursor cxcursor::MakeCursorObjCProtocolRef(ObjCProtocolDecl *Super,
SourceLocation Loc) {
void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
CXCursor C = { CXCursor_ObjCProtocolRef, { Super, RawLoc, 0 } };
return C;
}
std::pair<ObjCProtocolDecl *, SourceLocation>
cxcursor::getCursorObjCProtocolRef(CXCursor C) {
assert(C.kind == CXCursor_ObjCProtocolRef);
return std::make_pair(static_cast<ObjCProtocolDecl *>(C.data[0]),
SourceLocation::getFromRawEncoding(
reinterpret_cast<uintptr_t>(C.data[1])));
}
Decl *cxcursor::getCursorDecl(CXCursor Cursor) {
return (Decl *)Cursor.data[0];
}
Expr *cxcursor::getCursorExpr(CXCursor Cursor) {
return dyn_cast_or_null<Expr>(getCursorStmt(Cursor));
}
Stmt *cxcursor::getCursorStmt(CXCursor Cursor) {
if (Cursor.kind == CXCursor_ObjCSuperClassRef ||
Cursor.kind == CXCursor_ObjCProtocolRef)
return 0;
return (Stmt *)Cursor.data[1];
}
Decl *cxcursor::getCursorReferringDecl(CXCursor Cursor) {
return (Decl *)Cursor.data[2];
}
NamedDecl *cxcursor::getCursorInterfaceParent(CXCursor Cursor) {
assert(Cursor.kind == CXCursor_ObjCClassRef);
assert(isa<ObjCInterfaceDecl>(getCursorDecl(Cursor)));
// FIXME: This is a hack (storing the parent decl in the stmt slot).
return static_cast<NamedDecl *>(Cursor.data[1]);
}
bool cxcursor::operator==(CXCursor X, CXCursor Y) {
return X.kind == Y.kind && X.data[0] == Y.data[0] && X.data[1] == Y.data[1] &&
X.data[2] == Y.data[2];
}
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