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
|
#include "reader.h"
#include <string.h>
typedef enum {
TOKEN_ZERO,
TOKEN_LITERAL,
TOKEN_PIPE,
TOKEN_OR,
TOKEN_AND,
TOKEN_LINE_COMMENT,
TOKEN_O_BRACKET,
TOKEN_C_BRACKET,
TOKEN_O_BRACES,
TOKEN_C_BRACES,
TOKEN_O_PARENTHESIS,
TOKEN_C_PARENTHESIS,
TOKEN_MULTIPLICATION,
TOKEN_PLUS,
TOKEN_MINUS,
TOKEN_DIVISION
} TokenType;
typedef struct {
TokenType type;
String value;
} Token;
typedef struct {
Arena *arena;
u32 size;
Token *list;
} TokenList;
TokenList token_list_new(Arena *arena, u64 capacity) {
TokenList list;
list.arena = arena;
list.size = 0;
list.list = arena_array(arena, Token, capacity);
return list;
}
int token_compare_symbol(String *slice, Token *token) {
if (string_compare_literal(slice, "|>") == 0) {
token->type = TOKEN_PIPE;
memcpy(&(token->value), slice, 2);
return 1;
} else if (string_compare_literal(slice, "||") == 0) {
token->type = TOKEN_OR;
memcpy(&(token->value), slice, 2);
return 1;
} else if (string_compare_literal(slice, "&&") == 0) {
token->type = TOKEN_AND;
memcpy(&(token->value), slice, 2);
return 1;
} else if (string_compare_literal(slice, "//") == 0) {
token->type = TOKEN_LINE_COMMENT;
memcpy(&(token->value), slice, 2);
return 1;
}
if (string_compare_literal(slice, "}") == 0) {
token->type = TOKEN_O_BRACES;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, "{") == 0) {
token->type = TOKEN_C_BRACES;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, "[") == 0) {
token->type = TOKEN_O_BRACKET;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, "]") == 0) {
token->type = TOKEN_C_BRACKET;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, "(") == 0) {
token->type = TOKEN_O_PARENTHESIS;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, ")") == 0) {
token->type = TOKEN_C_PARENTHESIS;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, "*") == 0) {
token->type = TOKEN_MULTIPLICATION;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, "+") == 0) {
token->type = TOKEN_PLUS;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, "-") == 0) {
token->type = TOKEN_MINUS;
memcpy(&(token->value), slice, 1);
return 1;
} else if (string_compare_literal(slice, "/") == 0) {
token->type = TOKEN_DIVISION;
memcpy(&(token->value), slice, 1);
return 1;
}
return 0;
}
int tokenize(String slice, Token *token) {
if (slice.size < 3 && token_compare_symbol(&slice, token) == 1) {
return 1;
}
return 0;
}
TokenList tokennize_list(Arena *arena, Reader *reader) {
u32 start = 0, end = 1, count = 0;
String slice;
Token token;
TokenList list;
memset(&token, 0, sizeof(token));
/* Count tokens */
do {
slice.size = end - start;
slice.buf = &(reader->buffer[start]);
if (tokenize(slice, &token)) {
count++;
end = start;
}
end++;
} while (reader_advance(reader, &start, &end));
reader_reset(reader);
list = token_list_new(arena, count);
count = 0;
/* Process tokens */
do {
slice.size = end - start;
slice.buf = &(reader->buffer[start]);
if (tokenize(slice, &token)) {
memcpy(&(list.list[count++]), &token, sizeof(token));
}
end++;
} while (reader_advance(reader, &start, &end));
return list;
}
|
