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-rw-r--r--clang/lib/Sema/Sema.cpp222
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diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
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+//===--- Sema.cpp - AST Builder and Semantic Analysis Implementation ------===//
+//
+// 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 actions class which performs semantic analysis and
+// builds an AST out of a parse stream.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Sema.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Parse/Scope.h"
+
+using namespace clang;
+
+bool Sema::isBuiltinObjCType(TypedefDecl *TD) {
+ const char *typeName = TD->getIdentifier()->getName();
+ return strcmp(typeName, "id") == 0 || strcmp(typeName, "Class") == 0 ||
+ strcmp(typeName, "SEL") == 0 || strcmp(typeName, "Protocol") == 0;
+}
+
+bool Sema::isObjCObjectPointerType(QualType type) const {
+ if (!type->isPointerType() && !type->isObjCQualifiedIdType())
+ return false;
+ if (type == Context.getObjCIdType() || type == Context.getObjCClassType() ||
+ type->isObjCQualifiedIdType())
+ return true;
+
+ if (type->isPointerType()) {
+ PointerType *pointerType = static_cast<PointerType*>(type.getTypePtr());
+ type = pointerType->getPointeeType();
+ }
+ return (type->isObjCInterfaceType() || type->isObjCQualifiedIdType());
+}
+
+void Sema::ActOnTranslationUnitScope(SourceLocation Loc, Scope *S) {
+ TUScope = S;
+ if (!PP.getLangOptions().ObjC1) return;
+
+ TypedefType *t;
+
+ // Add the built-in ObjC types.
+ t = cast<TypedefType>(Context.getObjCIdType().getTypePtr());
+ t->getDecl()->getIdentifier()->setFETokenInfo(t->getDecl());
+ TUScope->AddDecl(t->getDecl());
+ t = cast<TypedefType>(Context.getObjCClassType().getTypePtr());
+ t->getDecl()->getIdentifier()->setFETokenInfo(t->getDecl());
+ TUScope->AddDecl(t->getDecl());
+ ObjCInterfaceType *it = cast<ObjCInterfaceType>(Context.getObjCProtoType());
+ ObjCInterfaceDecl *IDecl = it->getDecl();
+ IDecl->getIdentifier()->setFETokenInfo(IDecl);
+ TUScope->AddDecl(IDecl);
+
+ // Synthesize "typedef struct objc_selector *SEL;"
+ RecordDecl *SelTag = RecordDecl::Create(Context, Decl::Struct,
+ SourceLocation(),
+ &Context.Idents.get("objc_selector"),
+ 0);
+ SelTag->getIdentifier()->setFETokenInfo(SelTag);
+ TUScope->AddDecl(SelTag);
+
+ QualType SelT = Context.getPointerType(Context.getTagDeclType(SelTag));
+ TypedefDecl *SelTypedef = TypedefDecl::Create(Context, SourceLocation(),
+ &Context.Idents.get("SEL"),
+ SelT, 0);
+ SelTypedef->getIdentifier()->setFETokenInfo(SelTypedef);
+ TUScope->AddDecl(SelTypedef);
+ Context.setObjCSelType(SelTypedef);
+}
+
+Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer)
+ : PP(pp), Context(ctxt), Consumer(consumer),
+ CurFunctionDecl(0), CurMethodDecl(0) {
+
+ // Get IdentifierInfo objects for known functions for which we
+ // do extra checking.
+ IdentifierTable &IT = PP.getIdentifierTable();
+
+ KnownFunctionIDs[id_printf] = &IT.get("printf");
+ KnownFunctionIDs[id_fprintf] = &IT.get("fprintf");
+ KnownFunctionIDs[id_sprintf] = &IT.get("sprintf");
+ KnownFunctionIDs[id_snprintf] = &IT.get("snprintf");
+ KnownFunctionIDs[id_asprintf] = &IT.get("asprintf");
+ KnownFunctionIDs[id_vsnprintf] = &IT.get("vsnprintf");
+ KnownFunctionIDs[id_vasprintf] = &IT.get("vasprintf");
+ KnownFunctionIDs[id_vfprintf] = &IT.get("vfprintf");
+ KnownFunctionIDs[id_vsprintf] = &IT.get("vsprintf");
+ KnownFunctionIDs[id_vprintf] = &IT.get("vprintf");
+
+ // FIXME: Move this initialization up to Sema::ActOnTranslationUnitScope()
+ // and make sure the decls get inserted into TUScope!
+ if (PP.getLangOptions().ObjC1) {
+ // Synthesize "typedef struct objc_class *Class;"
+ RecordDecl *ClassTag = RecordDecl::Create(Context, Decl::Struct,
+ SourceLocation(),
+ &IT.get("objc_class"), 0);
+ QualType ClassT = Context.getPointerType(Context.getTagDeclType(ClassTag));
+ TypedefDecl *ClassTypedef =
+ TypedefDecl::Create(Context, SourceLocation(),
+ &Context.Idents.get("Class"), ClassT, 0);
+ Context.setObjCClassType(ClassTypedef);
+
+ // Synthesize "@class Protocol;
+ ObjCInterfaceDecl *ProtocolDecl = new ObjCInterfaceDecl(SourceLocation(), 0,
+ &Context.Idents.get("Protocol"), true);
+ Context.setObjCProtoType(Context.getObjCInterfaceType(ProtocolDecl));
+
+ // Synthesize "typedef struct objc_object { Class isa; } *id;"
+ RecordDecl *ObjectTag =
+ RecordDecl::Create(Context, Decl::Struct, SourceLocation(),
+ &IT.get("objc_object"), 0);
+ FieldDecl *IsaDecl = new FieldDecl(SourceLocation(), 0,
+ Context.getObjCClassType());
+ ObjectTag->defineBody(&IsaDecl, 1);
+ QualType ObjT = Context.getPointerType(Context.getTagDeclType(ObjectTag));
+ TypedefDecl *IdTypedef = TypedefDecl::Create(Context, SourceLocation(),
+ &Context.Idents.get("id"),
+ ObjT, 0);
+ Context.setObjCIdType(IdTypedef);
+ }
+ TUScope = 0;
+}
+
+/// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit cast.
+/// If there is already an implicit cast, merge into the existing one.
+void Sema::ImpCastExprToType(Expr *&Expr, QualType Type) {
+ if (Expr->getType().getCanonicalType() == Type.getCanonicalType()) return;
+
+ if (ImplicitCastExpr *ImpCast = dyn_cast<ImplicitCastExpr>(Expr))
+ ImpCast->setType(Type);
+ else
+ Expr = new ImplicitCastExpr(Type, Expr);
+}
+
+
+
+void Sema::DeleteExpr(ExprTy *E) {
+ delete static_cast<Expr*>(E);
+}
+void Sema::DeleteStmt(StmtTy *S) {
+ delete static_cast<Stmt*>(S);
+}
+
+//===----------------------------------------------------------------------===//
+// Helper functions.
+//===----------------------------------------------------------------------===//
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID) {
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg) {
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID, &Msg, 1);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg1,
+ const std::string &Msg2) {
+ std::string MsgArr[] = { Msg1, Msg2 };
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID, MsgArr, 2);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID, SourceRange Range) {
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID, 0, 0, &Range,1);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg,
+ SourceRange Range) {
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID, &Msg, 1, &Range,1);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg1,
+ const std::string &Msg2, SourceRange Range) {
+ std::string MsgArr[] = { Msg1, Msg2 };
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID, MsgArr, 2, &Range, 1);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg1,
+ const std::string &Msg2, const std::string &Msg3,
+ SourceRange R1) {
+ std::string MsgArr[] = { Msg1, Msg2, Msg3 };
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID, MsgArr, 3, &R1, 1);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID,
+ SourceRange R1, SourceRange R2) {
+ SourceRange RangeArr[] = { R1, R2 };
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID, 0, 0, RangeArr, 2);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg,
+ SourceRange R1, SourceRange R2) {
+ SourceRange RangeArr[] = { R1, R2 };
+ PP.getDiagnostics().Report(PP.getFullLoc(Loc), DiagID, &Msg, 1, RangeArr, 2);
+ return true;
+}
+
+bool Sema::Diag(SourceLocation Range, unsigned DiagID, const std::string &Msg1,
+ const std::string &Msg2, SourceRange R1, SourceRange R2) {
+ std::string MsgArr[] = { Msg1, Msg2 };
+ SourceRange RangeArr[] = { R1, R2 };
+ PP.getDiagnostics().Report(PP.getFullLoc(Range),DiagID, MsgArr,2,RangeArr, 2);
+ return true;
+}
+
+const LangOptions &Sema::getLangOptions() const {
+ return PP.getLangOptions();
+}
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