1//===--- InterpreterUtils.cpp - Incremental Utils --------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements some common utils used in the incremental library.
10//
11//===----------------------------------------------------------------------===//
12
13#include "InterpreterUtils.h"
14
15namespace clang {
16
17IntegerLiteral *IntegerLiteralExpr(ASTContext &C, uint64_t Val) {
18 return IntegerLiteral::Create(C, llvm::APSInt::getUnsigned(X: Val),
19 C.UnsignedLongLongTy, SourceLocation());
20}
21
22Expr *CStyleCastPtrExpr(Sema &S, QualType Ty, Expr *E) {
23 ASTContext &Ctx = S.getASTContext();
24 if (!Ty->isPointerType())
25 Ty = Ctx.getPointerType(T: Ty);
26
27 TypeSourceInfo *TSI = Ctx.getTrivialTypeSourceInfo(T: Ty, Loc: SourceLocation());
28 Expr *Result =
29 S.BuildCStyleCastExpr(LParenLoc: SourceLocation(), Ty: TSI, RParenLoc: SourceLocation(), Op: E).get();
30 assert(Result && "Cannot create CStyleCastPtrExpr");
31 return Result;
32}
33
34Expr *CStyleCastPtrExpr(Sema &S, QualType Ty, uintptr_t Ptr) {
35 ASTContext &Ctx = S.getASTContext();
36 return CStyleCastPtrExpr(S, Ty, IntegerLiteralExpr(C&: Ctx, Val: (uint64_t)Ptr));
37}
38
39Sema::DeclGroupPtrTy CreateDGPtrFrom(Sema &S, Decl *D) {
40 SmallVector<Decl *, 1> DeclsInGroup;
41 DeclsInGroup.push_back(Elt: D);
42 Sema::DeclGroupPtrTy DeclGroupPtr = S.BuildDeclaratorGroup(Group: DeclsInGroup);
43 return DeclGroupPtr;
44}
45
46NamespaceDecl *LookupNamespace(Sema &S, llvm::StringRef Name,
47 const DeclContext *Within) {
48 DeclarationName DName = &S.Context.Idents.get(Name);
49 LookupResult R(S, DName, SourceLocation(),
50 Sema::LookupNestedNameSpecifierName);
51 R.suppressDiagnostics();
52 if (!Within)
53 S.LookupName(R, S: S.TUScope);
54 else {
55 if (const auto *TD = dyn_cast<clang::TagDecl>(Val: Within);
56 TD && !TD->getDefinition())
57 // No definition, no lookup result.
58 return nullptr;
59
60 S.LookupQualifiedName(R, LookupCtx: const_cast<DeclContext *>(Within));
61 }
62
63 if (R.empty())
64 return nullptr;
65
66 R.resolveKind();
67
68 return dyn_cast<NamespaceDecl>(Val: R.getFoundDecl());
69}
70
71NamedDecl *LookupNamed(Sema &S, llvm::StringRef Name,
72 const DeclContext *Within) {
73 DeclarationName DName = &S.Context.Idents.get(Name);
74 LookupResult R(S, DName, SourceLocation(), Sema::LookupOrdinaryName,
75 RedeclarationKind::ForVisibleRedeclaration);
76
77 R.suppressDiagnostics();
78
79 if (!Within)
80 S.LookupName(R, S: S.TUScope);
81 else {
82 const DeclContext *PrimaryWithin = nullptr;
83 if (const auto *TD = dyn_cast<TagDecl>(Val: Within))
84 PrimaryWithin = llvm::dyn_cast_or_null<DeclContext>(Val: TD->getDefinition());
85 else
86 PrimaryWithin = Within->getPrimaryContext();
87
88 // No definition, no lookup result.
89 if (!PrimaryWithin)
90 return nullptr;
91
92 S.LookupQualifiedName(R, LookupCtx: const_cast<DeclContext *>(PrimaryWithin));
93 }
94
95 if (R.empty())
96 return nullptr;
97 R.resolveKind();
98
99 if (R.isSingleResult())
100 return llvm::dyn_cast<NamedDecl>(Val: R.getFoundDecl());
101
102 return nullptr;
103}
104
105std::string GetFullTypeName(ASTContext &Ctx, QualType QT) {
106 PrintingPolicy Policy(Ctx.getPrintingPolicy());
107 Policy.SuppressScope = false;
108 Policy.AnonymousTagLocations = false;
109 return QT.getAsString(Policy);
110}
111} // namespace clang
112

source code of clang/lib/Interpreter/InterpreterUtils.cpp