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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
//===--- ParseDeclName.cpp ------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "swift/Parse/ParseDeclName.h"
#include "swift/AST/ASTContext.h"
using namespace swift;
ParsedDeclName swift::parseDeclName(StringRef name) {
if (name.empty())
return ParsedDeclName();
// Local function to handle the parsing of the base name + context.
//
// Returns true if an error occurred, without recording the base name.
ParsedDeclName result;
auto parseBaseName = [&](StringRef text) -> bool {
// Split the text into context name and base name.
StringRef contextName, baseName;
std::tie(contextName, baseName) = text.rsplit('.');
if (baseName.empty()) {
baseName = contextName;
contextName = StringRef();
} else if (contextName.empty()) {
return true;
}
auto isValidIdentifier = [](StringRef text) -> bool {
return Lexer::isIdentifier(text) && text != "_";
};
// Make sure we have an identifier for the base name.
if (!isValidIdentifier(baseName))
return true;
// If we have a context, make sure it is an identifier, or a series of
// dot-separated identifiers.
// FIXME: What about generic parameters?
if (!contextName.empty()) {
StringRef first;
StringRef rest = contextName;
do {
std::tie(first, rest) = rest.split('.');
if (!isValidIdentifier(first))
return true;
} while (!rest.empty());
}
// Record the results.
result.ContextName = contextName;
result.BaseName = baseName;
return false;
};
// If this is not a function name, just parse the base name and
// we're done.
if (name.back() != ')') {
if (Lexer::isOperator(name))
result.BaseName = name;
else if (parseBaseName(name))
return ParsedDeclName();
return result;
}
// We have a function name.
result.IsFunctionName = true;
// Split the base name from the parameters.
StringRef baseName, parameters;
std::tie(baseName, parameters) = name.split('(');
if (parameters.empty())
return ParsedDeclName();
// If the base name is prefixed by "getter:" or "setter:", it's an
// accessor.
if (baseName.starts_with("getter:")) {
result.IsGetter = true;
result.IsFunctionName = false;
baseName = baseName.substr(7);
} else if (baseName.starts_with("setter:")) {
result.IsSetter = true;
result.IsFunctionName = false;
baseName = baseName.substr(7);
}
// If the base name is prefixed by "subscript", it's an subscript.
if (baseName == "subscript") {
result.IsSubscript = true;
}
// Parse the base name.
if (parseBaseName(baseName))
return ParsedDeclName();
parameters = parameters.drop_back(); // ')'
if (parameters.empty())
return result;
if (parameters.back() != ':')
return ParsedDeclName();
bool isMember = !result.ContextName.empty();
do {
StringRef NextParam;
std::tie(NextParam, parameters) = parameters.split(':');
if (!Lexer::isIdentifier(NextParam))
return ParsedDeclName();
if (NextParam == "_") {
result.ArgumentLabels.push_back("");
} else if (isMember && NextParam == "self") {
// For a member, "self" indicates the self parameter. There can
// only be one such parameter.
if (result.SelfIndex)
return ParsedDeclName();
result.SelfIndex = result.ArgumentLabels.size();
} else {
result.ArgumentLabels.push_back(NextParam);
}
} while (!parameters.empty());
return result;
}
DeclName ParsedDeclName::formDeclName(ASTContext &ctx, bool isSubscript,
bool isCxxClassTemplateSpec) const {
return formDeclNameRef(ctx, isSubscript, isCxxClassTemplateSpec)
.getFullName();
}
DeclNameRef ParsedDeclName::formDeclNameRef(ASTContext &ctx, bool isSubscript,
bool isCxxClassTemplateSpec) const {
return swift::formDeclNameRef(ctx, BaseName, ArgumentLabels, IsFunctionName,
/*IsInitializer=*/true, isSubscript,
isCxxClassTemplateSpec);
}
DeclName swift::formDeclName(ASTContext &ctx, StringRef baseName,
ArrayRef<StringRef> argumentLabels,
bool isFunctionName, bool isInitializer,
bool isSubscript, bool isCxxClassTemplateSpec) {
return formDeclNameRef(ctx, baseName, argumentLabels, isFunctionName,
isInitializer, isSubscript, isCxxClassTemplateSpec)
.getFullName();
}
DeclNameRef swift::formDeclNameRef(ASTContext &ctx, StringRef baseName,
ArrayRef<StringRef> argumentLabels,
bool isFunctionName, bool isInitializer,
bool isSubscript,
bool isCxxClassTemplateSpec) {
// We cannot import when the base name is not an identifier.
if (baseName.empty())
return DeclNameRef();
if (!Lexer::isIdentifier(baseName) && !Lexer::isOperator(baseName) &&
!isCxxClassTemplateSpec)
return DeclNameRef();
// Get the identifier for the base name. Special-case `init`.
DeclBaseName baseNameId;
if (isInitializer && baseName == "init")
baseNameId = DeclBaseName::createConstructor();
else if (isSubscript && baseName == "subscript")
baseNameId = DeclBaseName::createSubscript();
else
baseNameId = ctx.getIdentifier(baseName);
// For non-functions, just use the base name.
if (!isFunctionName && !baseNameId.isSubscript())
return DeclNameRef(baseNameId);
// For functions, we need to form a complete name.
// Convert the argument names.
SmallVector<Identifier, 4> argumentLabelIds;
for (auto argName : argumentLabels) {
if (argumentLabels.empty() || !Lexer::isIdentifier(argName)) {
argumentLabelIds.push_back(Identifier());
continue;
}
argumentLabelIds.push_back(ctx.getIdentifier(argName));
}
// Build the result.
return DeclNameRef({ctx, baseNameId, argumentLabelIds});
}
|
