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
|
#include "token.h"
#include <stdio.h>
#include <stddef.h>
#include "hmap.h"
static struct hmap *keywords = NULL;
static const char *keys[] = {
"and",
"or",
"not",
"for",
"in",
"break",
"endfor",
"true",
"false",
"if",
"elif",
"else",
"endif",
"extends",
"block",
"endblock",
NULL,
};
enum token_type values[] = {
TOKEN_AND,
TOKEN_OR,
TOKEN_NOT,
TOKEN_FOR,
TOKEN_IN,
TOKEN_BREAK,
TOKEN_ENDFOR,
TOKEN_TRUE,
TOKEN_FALSE,
TOKEN_IF,
TOKEN_ELIF,
TOKEN_ELSE,
TOKEN_ENDIF,
TOKEN_EXTENDS,
TOKEN_BLOCK,
TOKEN_ENDBLOCK,
TOKEN_EOF,
};
const char *token_types[] = {
"ILLEGAL",
"EOF",
/* Identifiers/Literals */
"IDENTIFIER",
"INTEGER",
"STRING",
/* Operators */
"=",
"+",
"-",
"!",
"*",
"/",
"<",
">",
"<=",
">=",
"==",
"!=",
"and",
"or",
"not",
/* Delimiters */
".",
",",
"(",
")",
"{",
"}",
"[",
"]",
"#",
"%",
/* Keywords */
"for",
"in",
"break",
"endfor",
"true",
"false",
"if",
"elif",
"else",
"endif",
"extends",
"block",
"endblock",
/* The document content */
"CONTENT",
};
void
token_init_keywords(void)
{
if (keywords == NULL) {
keywords = hmap_new();
for (size_t i = 0; keys[i] != NULL; i++) {
hmap_set(keywords, keys[i], values + i);
}
}
}
enum token_type
token_lookup_ident(const struct slice *ident)
{
enum token_type *t = hmap_gets(keywords, ident);
if (t) {
return *t;
}
return TOKEN_IDENT;
}
extern inline const char *
token_type_print(enum token_type t)
{
return token_types[t];
}
sds
token_string(struct token *token, sds str)
{
const char *type = token_type_print(token->type);
sds slicebuf = sdsempty();
sdscatfmt(str, "TOKEN: type: %s, literal: %s", type,
slice_string(&token->literal, slicebuf));
sdsfree(slicebuf);
return str;
}
void
token_free_keywords(void)
{
hmap_free(keywords);
}
|
