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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2024 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
//
//===----------------------------------------------------------------------===//
import SwiftSyntax
import SwiftSyntaxBuilder
import SyntaxSupport
struct ChildNodeChoices {
struct Choice: IdentifierConvertible, TypeConvertible {
var documentation: SwiftSyntax.Trivia
var experimentalDocNote: SwiftSyntax.Trivia
var apiAttributes: AttributeListSyntax
var identifier: TokenSyntax
var isBase: Bool
var syntaxType: TypeSyntax
var protocolType: TypeSyntax
var isAvailableInDocc: Bool
init(_ node: some NodeChoiceConvertible, forRaw: Bool) {
self.documentation = node.documentation
self.experimentalDocNote = node.experimentalDocNote
self.apiAttributes = node.apiAttributes
self.identifier = node.identifier
let type: any TypeConvertible = forRaw ? node.syntaxNodeKind.raw : node.syntaxNodeKind
self.isBase = type.isBase
self.syntaxType = type.syntaxType
self.protocolType = type.protocolType
self.isAvailableInDocc = type.isAvailableInDocc
}
}
let name: TypeSyntax
let choices: [Choice]
func isKindOfFuncDecl(parameterName: TokenSyntax, parameterType: TypeSyntax) -> FunctionDeclSyntax {
try! FunctionDeclSyntax("public static func isKindOf(_ \(parameterName): \(parameterType)) -> Bool") {
ExprSyntax(
"\(raw: self.choices.map { "\($0.syntaxType).isKindOf(\(parameterName))" }.joined(separator: " || "))"
)
}
}
func syntaxGetter(propertyName: TokenSyntax, propertyType: TypeSyntax) -> VariableDeclSyntax {
try! VariableDeclSyntax("public var \(propertyName.declNameOrVarCallName): \(propertyType)") {
try! SwitchExprSyntax("switch self") {
for choice in self.choices {
SwitchCaseSyntax("case .\(choice.enumCaseCallName)(let node):") {
StmtSyntax("return node.\(propertyName.nonVarCallNameOrLabelDeclName)")
}
}
}
}
}
func syntaxInitDecl(inputType: TypeSyntax) -> InitializerDeclSyntax {
try! InitializerDeclSyntax("public init?(_ node: \(inputType))") {
self.choices.ifExpr
}
}
}
extension Node {
func childrenNodeChoices(forRaw: Bool = false) -> [ChildNodeChoices] {
if let node = self.layoutNode {
return node.children.compactMap { child in
switch child.kind {
case .nodeChoices(let choices, _):
return ChildNodeChoices(
name: child.syntaxChoicesType,
choices: choices.map { ChildNodeChoices.Choice($0, forRaw: forRaw) }
)
default:
return nil
}
}
} else if let node = self.collectionNode, node.elementChoices.count > 1 {
return [
ChildNodeChoices(
name: "Element",
choices: node.elementChoices.map {
ChildNodeChoices.Choice(SYNTAX_NODE_MAP[$0]!, forRaw: forRaw)
}
)
]
} else {
return []
}
}
}
extension ChildNodeChoices.Choice {
var enumCaseDecl: EnumCaseDeclSyntax {
try! EnumCaseDeclSyntax(
"""
\(self.documentation)\
\(self.experimentalDocNote)\
\(self.apiAttributes)\
case \(self.enumCaseDeclName)(\(self.syntaxType))
"""
)
}
func baseTypeInitDecl(hasArgumentName: Bool) -> InitializerDeclSyntax? {
guard self.isBase else {
return nil
}
let firstName: SyntaxNodeString
let secondName: TokenSyntax
if hasArgumentName {
firstName = ""
secondName = self.labelDeclName
} else {
firstName = "_ "
secondName = "node"
}
return try! InitializerDeclSyntax(
"""
\(self.experimentalDocNote)\
\(self.apiAttributes)\
public init(\(firstName)\(secondName): some \(self.protocolType))
"""
) {
ExprSyntax(
"self = .\(self.memberCallName)(\(self.syntaxType)(\(secondName)))"
)
}
}
var concreteTypeInitDecl: InitializerDeclSyntax {
try! InitializerDeclSyntax(
"""
\(self.experimentalDocNote)\
\(self.apiAttributes)\
public init(_ node: \(self.syntaxType))
"""
) {
ExprSyntax("self = .\(self.memberCallName)(node)")
}
}
}
private extension Array where Element == ChildNodeChoices.Choice {
var ifExpr: IfExprSyntax {
precondition(!self.isEmpty)
var result = try! IfExprSyntax(
"if let node = node.as(\(self.last!.syntaxType).self)",
bodyBuilder: {
ExprSyntax("self = .\(self.last!.memberCallName)(node)")
},
else: {
["return nil"]
}
)
for choice in self.reversed().dropFirst() {
result = try! IfExprSyntax(
"if let node = node.as(\(choice.syntaxType).self)",
bodyBuilder: {
ExprSyntax("self = .\(choice.memberCallName)(node)")
},
elseIf: result
)
}
return result
}
}
|
