1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
//===--- GenericRequirement.h - Generic requirements ------------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This class describes types for working with requirements of generic
// signatures and the layout of the generic arguments section of
// generic type metadata.
//
//===----------------------------------------------------------------------===//
#ifndef SWIFT_IRGEN_GENERICREQUIREMENT_H
#define SWIFT_IRGEN_GENERICREQUIREMENT_H
#include "swift/AST/Type.h"
#include "swift/IRGen/GenericRequirement.h"
#include "llvm/ADT/DenseMapInfo.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
namespace llvm {
class Value;
}
namespace swift {
class CanGenericSignature;
enum class MetadataState : size_t;
class ModuleDecl;
class NominalTypeDecl;
class ProtocolDecl;
class SubstitutionMap;
namespace irgen {
class Address;
class IRGenFunction;
class IRGenModule;
class DynamicMetadataRequest;
using RequirementCallback =
llvm::function_ref<void(GenericRequirement requirement)>;
/// Enumerate the generic requirements imposed by a generic signature.
void enumerateGenericSignatureRequirements(CanGenericSignature signature,
const RequirementCallback &callback);
/// Given a substitution map and a generic requirement for the
/// substitution map's input generic signature, emit the required value.
llvm::Value *
emitGenericRequirementFromSubstitutions(IRGenFunction &IGF,
GenericRequirement requirement,
MetadataState metadataState,
SubstitutionMap subs,
bool onHeapPacks=false);
void emitInitOfGenericRequirementsBuffer(IRGenFunction &IGF,
ArrayRef<GenericRequirement> reqts,
Address buffer,
MetadataState metadataState,
SubstitutionMap subs,
bool onHeapPacks=false);
/// Given a required value, map the requirement into the given
/// context and bind the value.
void bindGenericRequirement(IRGenFunction &IGF,
GenericRequirement requirement,
llvm::Value *requiredValue,
MetadataState metadataState,
SubstitutionMap subs);
void bindFromGenericRequirementsBuffer(IRGenFunction &IGF,
ArrayRef<GenericRequirement> reqts,
Address buffer,
MetadataState metadataState,
SubstitutionMap subs);
void bindPolymorphicArgumentsFromComponentIndices(IRGenFunction &IGF,
GenericEnvironment *genericEnv,
ArrayRef<GenericRequirement> requirements,
llvm::Value *args,
llvm::Value *size,
bool hasSubscriptIndices);
/// A class describing the layout of the generic requirements of a
/// nominal type metadata.
///
/// The generic requirements are always laid out as a sequence of shape
/// parameters, followed by type metadata and witness tables.
class GenericTypeRequirements {
llvm::SmallVector<GenericRequirement, 4> Requirements;
public:
GenericTypeRequirements(IRGenModule &IGM, NominalTypeDecl *decl);
GenericTypeRequirements(IRGenModule &IGM, GenericSignature sig);
/// Return the layout chunks.
ArrayRef<GenericRequirement> getRequirements() const {
return Requirements;
}
bool empty() const { return Requirements.empty(); }
void emitInitOfBuffer(IRGenFunction &IGF, SubstitutionMap subs,
Address buffer);
void bindFromBuffer(IRGenFunction &IGF, Address buffer, MetadataState state,
SubstitutionMap subs);
};
} // end namespace irgen
} // end namespace swift
#endif
|
