summaryrefslogtreecommitdiffstats
path: root/mdk-stage1/slang/keywhash.c
blob: 17d94d5a3d172bbd47e7fefd3768c7425645c3aa (plain)
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
/* Perfect hash generated by command line:
 * ./a.out 1
 */
#define MIN_HASH_VALUE	2
#define MAX_HASH_VALUE	118
#define MIN_KEYWORD_LEN 2
#define MAX_KEYWORD_LEN 11

static unsigned char Keyword_Hash_Table [256] =
{
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119,   1, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
    9,   7,   1,   8,   2, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119,   0,   0, 119,   0, 119, 119, 119,   7, 119,   0,   0, 119, 119,   0, 
  119, 119,   0,   0,   0,   0, 119, 119,   0, 119, 119, 119, 119, 119, 119,   2, 
  119,  41,   1,   1,   9,   0,  55,   8,   0,   0, 119,   0,  27,   0,   0,   0, 
    7,   2,   0,  21,   0,   0,   0,   3,   2,   0, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
  119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119
};

static unsigned char keyword_hash (char *s, unsigned int len)
{
   unsigned int sum;

   sum = len;
   while (len)
     {
	len--;
	sum += (unsigned int) Keyword_Hash_Table [(unsigned char)s[len]];
     }
   return sum;
}

typedef struct
{
   char *name;
   unsigned int type;
}
Keyword_Table_Type;

static Keyword_Table_Type Keyword_Table [/* 117 */] =
{
   {"or",	OR_TOKEN},
   {"not",	NOT_TOKEN},
   {NULL,0},
   {"xor",	BXOR_TOKEN},
   {"return",	RETURN_TOKEN},
   {"exch",	EXCH_TOKEN},
   {NULL,0},
   {"continue",	CONT_TOKEN},
   {NULL,0},
   {"do",	DO_TOKEN},
   {"mod",	MOD_TOKEN},
   {"ERROR_BLOCK",	ERRBLK_TOKEN},
   {"USER_BLOCK2",	USRBLK2_TOKEN},
   {"USER_BLOCK4",	USRBLK4_TOKEN},
   {"__tmp",	TMP_TOKEN},
   {"pop",	POP_TOKEN},
   {NULL,0},
   {"EXIT_BLOCK",	EXITBLK_TOKEN},
   {"USER_BLOCK1",	USRBLK1_TOKEN},
   {"USER_BLOCK3",	USRBLK3_TOKEN},
   {"USER_BLOCK0",	USRBLK0_TOKEN},
   {NULL,0},
   {"shr",	SHR_TOKEN},
   {"chs",	CHS_TOKEN},
   {"sqr",	SQR_TOKEN},
   {NULL,0},
   {"struct",	STRUCT_TOKEN},
   {NULL,0},
   {NULL,0},
   {"switch",	SWITCH_TOKEN},
   {"mul2",	MUL2_TOKEN},
   {"sign",	SIGN_TOKEN},
   {"using",	USING_TOKEN},
   {"while",	WHILE_TOKEN},
   {NULL,0},
   {NULL,0},
   {"loop",	LOOP_TOKEN},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {"public",	PUBLIC_TOKEN},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {"break",	BREAK_TOKEN},
   {NULL,0},
   {"do_while",	DOWHILE_TOKEN},
   {NULL,0},
   {"shl",	SHL_TOKEN},
   {"else",	ELSE_TOKEN},
   {"and",	AND_TOKEN},
   {"orelse",	ORELSE_TOKEN},
   {"private",	PRIVATE_TOKEN},
   {NULL,0},
   {"if",	IF_TOKEN},
   {"for",	FOR_TOKEN},
   {"!if",	IFNOT_TOKEN},
   {NULL,0},
   {"_for",	_FOR_TOKEN},
   {"forever",	FOREVER_TOKEN},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {"abs",	ABS_TOKEN},
   {"case",	CASE_TOKEN},
   {NULL,0},
   {"static",	STATIC_TOKEN},
   {"define",	DEFINE_TOKEN},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {"typedef",	TYPEDEF_TOKEN},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {"foreach",	FOREACH_TOKEN},
   {"andelse",	ANDELSE_TOKEN},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {NULL,0},
   {"variable",	VARIABLE_TOKEN},
};

static Keyword_Table_Type *is_keyword (char *str, unsigned int len)
{
   unsigned int hash;
   char *name;
   Keyword_Table_Type *kw;

   if ((len < MIN_KEYWORD_LEN)
       || (len > MAX_KEYWORD_LEN))
     return NULL;

   hash = keyword_hash (str, len);
   if ((hash > MAX_HASH_VALUE) || (hash < MIN_HASH_VALUE))
     return NULL;

   kw = &Keyword_Table[hash - MIN_HASH_VALUE];
   if ((NULL != (name = kw->name))
       && (*str == *name)
       && (0 == strcmp (str, name)))
     return kw;
   return NULL;
}