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
|
/*-------------------------------------------------------------------------
*
* keywords.c
* lexical token lookup for reserved words in postgres embedded SQL
*
*-------------------------------------------------------------------------
*/
#include <ctype.h>
#include "postgres.h"
#include "extern.h"
#include "preproc.h"
/*
* List of (keyword-name, keyword-token-value) pairs.
*
* !!WARNING!!: This list must be sorted, because binary
* search is used to locate entries.
*/
static ScanKeyword ScanKeywords[] = {
/* name value */
{"at", SQL_AT},
{"autocommit", SQL_AUTOCOMMIT},
{"bool", SQL_BOOL},
{"break", SQL_BREAK},
{"call", SQL_CALL},
{"connect", SQL_CONNECT},
{"connection", SQL_CONNECTION},
{"continue", SQL_CONTINUE},
{"deallocate", SQL_DEALLOCATE},
{"disconnect", SQL_DISCONNECT},
{"enum", SQL_ENUM},
{"found", SQL_FOUND},
{"free", SQL_FREE},
{"go", SQL_GO},
{"goto", SQL_GOTO},
{"identified", SQL_IDENTIFIED},
{"immediate", SQL_IMMEDIATE},
{"indicator", SQL_INDICATOR},
{"int", SQL_INT},
{"long", SQL_LONG},
{"off", SQL_OFF},
{"open", SQL_OPEN},
{"prepare", SQL_PREPARE},
{"reference", SQL_REFERENCE},
{"release", SQL_RELEASE},
{"section", SQL_SECTION},
{"short", SQL_SHORT},
{"signed", SQL_SIGNED},
{"sqlerror", SQL_SQLERROR},
{"sqlprint", SQL_SQLPRINT},
{"sqlwarning", SQL_SQLWARNING},
{"stop", SQL_STOP},
{"struct", SQL_STRUCT},
{"unsigned", SQL_UNSIGNED},
{"var", SQL_VAR},
{"whenever", SQL_WHENEVER},
};
ScanKeyword *
ScanECPGKeywordLookup(char *text)
{
ScanKeyword *low = &ScanKeywords[0];
ScanKeyword *high = endof(ScanKeywords) - 1;
ScanKeyword *middle;
int difference;
while (low <= high)
{
middle = low + (high - low) / 2;
difference = strcmp(middle->name, text);
if (difference == 0)
return middle;
else if (difference < 0)
low = middle + 1;
else
high = middle - 1;
}
return NULL;
}
|
