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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 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
//
//===----------------------------------------------------------------------===//
#if swift(>=6)
public import SwiftSyntax
#else
import SwiftSyntax
#endif
fileprivate extension OperatorKind {
var keyword: Keyword {
switch self {
case .infix: return .infix
case .prefix: return .prefix
case .postfix: return .postfix
}
}
}
extension Operator {
/// Synthesize a syntactic representation of this operator based on its
/// semantic definition.
public func synthesizedSyntax() -> OperatorDeclSyntax {
let fixitySpecifier = TokenSyntax.keyword(kind.keyword)
let operatorKeyword = TokenSyntax.keyword(.operator, leadingTrivia: .space)
let name = TokenSyntax.binaryOperator(name, leadingTrivia: .space)
let precedenceGroupSyntax = precedenceGroup.map { groupName in
OperatorPrecedenceAndTypesSyntax(
colon: .colonToken(),
precedenceGroup: .identifier(groupName, leadingTrivia: .space),
designatedTypes: DesignatedTypeListSyntax([])
)
}
return OperatorDeclSyntax(
fixitySpecifier: fixitySpecifier,
operatorKeyword: operatorKeyword,
name: name,
operatorPrecedenceAndTypes: precedenceGroupSyntax
)
}
}
extension PrecedenceRelation {
/// Synthesize a syntactic representation of this precedence relation based on
/// its semantic definition.
///
/// We only use this internally to synthesize syntactic locations.
func synthesizedSyntax(
indentation: Int = 4
) -> PrecedenceGroupRelationSyntax {
PrecedenceGroupRelationSyntax(
higherThanOrLowerThanLabel: .keyword(
kind.keyword,
leadingTrivia: [.newlines(1), .spaces(indentation)]
),
colon: .colonToken(),
precedenceGroups: PrecedenceGroupNameListSyntax(
[
PrecedenceGroupNameSyntax(
name: .identifier(groupName, leadingTrivia: .space)
)
]
)
)
}
}
fileprivate extension Associativity {
var keyword: Keyword {
switch self {
case .none: return .none
case .left: return .left
case .right: return .right
}
}
}
extension PrecedenceGroup {
/// Synthesize a syntactic representation of this precedence group based on
/// its semantic definition.
public func synthesizedSyntax(
indentation: Int = 4
) -> PrecedenceGroupDeclSyntax {
let precedencegroupKeyword = TokenSyntax.keyword(.precedencegroup)
let identifierSyntax =
TokenSyntax.identifier(name, leadingTrivia: .space)
let leftBrace = TokenSyntax.leftBraceToken(leadingTrivia: .space)
var groupAttributes: [PrecedenceGroupAttributeListSyntax.Element] = []
switch associativity {
case .left, .right:
groupAttributes.append(
.init(
PrecedenceGroupAssociativitySyntax(
associativityLabel:
.keyword(
.associativity,
leadingTrivia: [.newlines(1), .spaces(indentation)]
),
colon: .colonToken(),
value: .keyword(associativity.keyword, leadingTrivia: .space)
)
)
)
case .none:
// None is the default associativity.
break
}
if assignment {
groupAttributes.append(
.init(
PrecedenceGroupAssignmentSyntax(
assignmentLabel:
.keyword(
.assignment,
leadingTrivia: [.newlines(1), .spaces(indentation)]
),
colon: .colonToken(),
value: .keyword(.true, leadingTrivia: .space)
)
)
)
}
for relation in relations {
groupAttributes.append(
.init(
relation.synthesizedSyntax()
)
)
}
let rightBrace = TokenSyntax.rightBraceToken(
leadingTrivia: groupAttributes.isEmpty ? .space : .newline
)
return PrecedenceGroupDeclSyntax(
precedencegroupKeyword: precedencegroupKeyword,
name: identifierSyntax,
leftBrace: leftBrace,
groupAttributes: PrecedenceGroupAttributeListSyntax(groupAttributes),
rightBrace: rightBrace
)
}
}
|
