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
|
/* Compiler implementation of the D programming language
* Copyright (C) 1999-2020 by The D Language Foundation, All Rights Reserved
* written by Walter Bright
* http://www.digitalmars.com
* Distributed under the Boost Software License, Version 1.0.
* http://www.boost.org/LICENSE_1_0.txt
* https://github.com/D-Programming-Language/dmd/blob/master/src/identifier.c
*/
#include "root/dsystem.h"
#include "root/root.h"
#include "identifier.h"
#include "mars.h"
#include "id.h"
#include "tokens.h"
#include "utf.h"
Identifier::Identifier(const char *string, size_t length, int value)
{
//printf("Identifier('%s', %d)\n", string, value);
this->string = string;
this->value = value;
this->len = length;
}
Identifier::Identifier(const char *string)
{
//printf("Identifier('%s')\n", string);
this->string = string;
this->value = TOKidentifier;
this->len = strlen(string);
}
Identifier *Identifier::create(const char *string)
{
return new Identifier(string);
}
bool Identifier::equals(RootObject *o)
{
return this == o || strncmp(string,o->toChars(),len+1) == 0;
}
int Identifier::compare(RootObject *o)
{
return strncmp(string, o->toChars(), len + 1);
}
const char *Identifier::toChars()
{
return string;
}
int Identifier::getValue() const
{
return value;
}
const char *Identifier::toHChars2()
{
const char *p = NULL;
if (this == Id::ctor) p = "this";
else if (this == Id::dtor) p = "~this";
else if (this == Id::unitTest) p = "unittest";
else if (this == Id::dollar) p = "$";
else if (this == Id::withSym) p = "with";
else if (this == Id::result) p = "result";
else if (this == Id::returnLabel) p = "return";
else
{ p = toChars();
if (*p == '_')
{
if (strncmp(p, "_staticCtor", 11) == 0)
p = "static this";
else if (strncmp(p, "_staticDtor", 11) == 0)
p = "static ~this";
else if (strncmp(p, "__invariant", 11) == 0)
p = "invariant";
}
}
return p;
}
void Identifier::print()
{
fprintf(stderr, "%s",string);
}
int Identifier::dyncast() const
{
return DYNCAST_IDENTIFIER;
}
StringTable Identifier::stringtable;
Identifier *Identifier::generateId(const char *prefix)
{
static size_t i;
return generateId(prefix, ++i);
}
Identifier *Identifier::generateId(const char *prefix, size_t i)
{ OutBuffer buf;
buf.writestring(prefix);
buf.printf("%llu", (ulonglong)i);
char *id = buf.peekChars();
return idPool(id);
}
/********************************************
* Create an identifier in the string table.
*/
Identifier *Identifier::idPool(const char *s, size_t len)
{
StringValue *sv = stringtable.update(s, len);
Identifier *id = (Identifier *) sv->ptrvalue;
if (!id)
{
id = new Identifier(sv->toDchars(), len, TOKidentifier);
sv->ptrvalue = (char *)id;
}
return id;
}
Identifier *Identifier::idPool(const char *s, size_t len, int value)
{
StringValue *sv = stringtable.insert(s, len, NULL);
assert(sv);
Identifier *id = new Identifier(sv->toDchars(), len, value);
sv->ptrvalue = (char *)id;
return id;
}
/**********************************
* Determine if string is a valid Identifier.
* Returns:
* 0 invalid
*/
bool Identifier::isValidIdentifier(const char *p)
{
size_t len;
size_t idx;
if (!p || !*p)
goto Linvalid;
if (*p >= '0' && *p <= '9') // beware of isdigit() on signed chars
goto Linvalid;
len = strlen(p);
idx = 0;
while (p[idx])
{
dchar_t dc;
const char *q = utf_decodeChar((const utf8_t *)p, len, &idx, &dc);
if (q)
goto Linvalid;
if (!((dc >= 0x80 && isUniAlpha(dc)) || isalnum(dc) || dc == '_'))
goto Linvalid;
}
return true;
Linvalid:
return false;
}
Identifier *Identifier::lookup(const char *s, size_t len)
{
StringValue *sv = stringtable.lookup(s, len);
if (!sv)
return NULL;
return (Identifier *)sv->ptrvalue;
}
void Identifier::initTable()
{
stringtable._init(28000);
}
|
