clang 18.0.0git
ASTConcept.cpp
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1//===--- ASTConcept.cpp - Concepts Related AST Data Structures --*- 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/// \file
10/// \brief This file defines AST data structures related to concepts.
11///
12//===----------------------------------------------------------------------===//
13
17#include "llvm/ADT/ArrayRef.h"
18
19using namespace clang;
20
21namespace {
22void CreatUnsatisfiedConstraintRecord(
23 const ASTContext &C, const UnsatisfiedConstraintRecord &Detail,
24 UnsatisfiedConstraintRecord *TrailingObject) {
25 if (Detail.second.is<Expr *>())
26 new (TrailingObject) UnsatisfiedConstraintRecord{
27 Detail.first,
28 UnsatisfiedConstraintRecord::second_type(Detail.second.get<Expr *>())};
29 else {
30 auto &SubstitutionDiagnostic =
31 *Detail.second.get<std::pair<SourceLocation, StringRef> *>();
32 unsigned MessageSize = SubstitutionDiagnostic.second.size();
33 char *Mem = new (C) char[MessageSize];
34 memcpy(Mem, SubstitutionDiagnostic.second.data(), MessageSize);
35 auto *NewSubstDiag = new (C) std::pair<SourceLocation, StringRef>(
36 SubstitutionDiagnostic.first, StringRef(Mem, MessageSize));
37 new (TrailingObject) UnsatisfiedConstraintRecord{
38 Detail.first, UnsatisfiedConstraintRecord::second_type(NewSubstDiag)};
39 }
40}
41} // namespace
42
44 const ASTContext &C, const ConstraintSatisfaction &Satisfaction)
45 : NumRecords{Satisfaction.Details.size()},
46 IsSatisfied{Satisfaction.IsSatisfied}, ContainsErrors{
47 Satisfaction.ContainsErrors} {
48 for (unsigned I = 0; I < NumRecords; ++I)
49 CreatUnsatisfiedConstraintRecord(
50 C, Satisfaction.Details[I],
51 getTrailingObjects<UnsatisfiedConstraintRecord>() + I);
52}
53
55 const ASTContext &C, const ASTConstraintSatisfaction &Satisfaction)
56 : NumRecords{Satisfaction.NumRecords},
57 IsSatisfied{Satisfaction.IsSatisfied},
58 ContainsErrors{Satisfaction.ContainsErrors} {
59 for (unsigned I = 0; I < NumRecords; ++I)
60 CreatUnsatisfiedConstraintRecord(
61 C, *(Satisfaction.begin() + I),
62 getTrailingObjects<UnsatisfiedConstraintRecord>() + I);
63}
64
67 const ConstraintSatisfaction &Satisfaction) {
68 std::size_t size =
69 totalSizeToAlloc<UnsatisfiedConstraintRecord>(
70 Satisfaction.Details.size());
71 void *Mem = C.Allocate(size, alignof(ASTConstraintSatisfaction));
72 return new (Mem) ASTConstraintSatisfaction(C, Satisfaction);
73}
74
76 const ASTContext &C, const ASTConstraintSatisfaction &Satisfaction) {
77 std::size_t size =
78 totalSizeToAlloc<UnsatisfiedConstraintRecord>(Satisfaction.NumRecords);
79 void *Mem = C.Allocate(size, alignof(ASTConstraintSatisfaction));
80 return new (Mem) ASTConstraintSatisfaction(C, Satisfaction);
81}
82
84 llvm::FoldingSetNodeID &ID, const ASTContext &C,
85 const NamedDecl *ConstraintOwner, ArrayRef<TemplateArgument> TemplateArgs) {
86 ID.AddPointer(ConstraintOwner);
87 ID.AddInteger(TemplateArgs.size());
88 for (auto &Arg : TemplateArgs)
89 Arg.Profile(ID, C);
90}
91
94 SourceLocation TemplateKWLoc,
95 DeclarationNameInfo ConceptNameInfo,
96 NamedDecl *FoundDecl, ConceptDecl *NamedConcept,
97 const ASTTemplateArgumentListInfo *ArgsAsWritten) {
98 return new (C) ConceptReference(NNS, TemplateKWLoc, ConceptNameInfo,
99 FoundDecl, NamedConcept, ArgsAsWritten);
100}
101
102void ConceptReference::print(llvm::raw_ostream &OS,
103 const PrintingPolicy &Policy) const {
104 if (NestedNameSpec)
105 NestedNameSpec.getNestedNameSpecifier()->print(OS, Policy);
106 ConceptName.printName(OS, Policy);
108 OS << "<";
109 // FIXME: Find corresponding parameter for argument
110 for (auto &ArgLoc : ArgsAsWritten->arguments())
111 ArgLoc.getArgument().print(Policy, OS, /*IncludeType*/ false);
112 OS << ">";
113 }
114}
This file provides AST data structures related to concepts.
Defines the clang::ASTContext interface.
__DEVICE__ void * memcpy(void *__a, const void *__b, size_t __c)
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:182
Declaration of a C++20 concept.
A reference to a concept and its template args, as it appears in the code.
Definition: ASTConcept.h:128
bool hasExplicitTemplateArgs() const
Whether or not template arguments were explicitly specified in the concept reference (they might not ...
Definition: ASTConcept.h:213
static ConceptReference * Create(const ASTContext &C, NestedNameSpecifierLoc NNS, SourceLocation TemplateKWLoc, DeclarationNameInfo ConceptNameInfo, NamedDecl *FoundDecl, ConceptDecl *NamedConcept, const ASTTemplateArgumentListInfo *ArgsAsWritten)
Definition: ASTConcept.cpp:93
void print(llvm::raw_ostream &OS, const PrintingPolicy &Policy) const
Definition: ASTConcept.cpp:102
The result of a constraint satisfaction check, containing the necessary information to diagnose an un...
Definition: ASTConcept.h:35
llvm::SmallVector< std::pair< const Expr *, Detail >, 4 > Details
Pairs of unsatisfied atomic constraint expressions along with the substituted constraint expr,...
Definition: ASTConcept.h:60
void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &C)
Definition: ASTConcept.h:62
This represents one expression.
Definition: Expr.h:110
This represents a decl that may have a name.
Definition: Decl.h:248
A C++ nested-name-specifier augmented with source location information.
NestedNameSpecifier * getNestedNameSpecifier() const
Retrieve the nested-name-specifier to which this instance refers.
void print(raw_ostream &OS, const PrintingPolicy &Policy, bool ResolveTemplateArguments=false) const
Print this nested name specifier to the given output stream.
Encodes a location in the source.
std::pair< const Expr *, llvm::PointerUnion< Expr *, std::pair< SourceLocation, StringRef > * > > UnsatisfiedConstraintRecord
Pairs of unsatisfied atomic constraint expressions along with the substituted constraint expr,...
Definition: ASTConcept.h:85
The result of a constraint satisfaction check, containing the necessary information to diagnose an un...
Definition: ASTConcept.h:93
static ASTConstraintSatisfaction * Rebuild(const ASTContext &C, const ASTConstraintSatisfaction &Satisfaction)
Definition: ASTConcept.cpp:75
ASTConstraintSatisfaction(const ASTContext &C, const ConstraintSatisfaction &Satisfaction)
Definition: ASTConcept.cpp:43
const UnsatisfiedConstraintRecord * begin() const
Definition: ASTConcept.h:98
static ASTConstraintSatisfaction * Create(const ASTContext &C, const ConstraintSatisfaction &Satisfaction)
Definition: ASTConcept.cpp:66
Represents an explicit template argument list in C++, e.g., the "<int>" in "sort<int>".
Definition: TemplateBase.h:652
llvm::ArrayRef< TemplateArgumentLoc > arguments() const
Definition: TemplateBase.h:681
DeclarationNameInfo - A collector data type for bundling together a DeclarationName and the correspon...
void printName(raw_ostream &OS, PrintingPolicy Policy) const
printName - Print the human-readable name to a stream.
Describes how types, statements, expressions, and declarations should be printed.
Definition: PrettyPrinter.h:57