PostgreSQL Source Code: src/interfaces/ecpg/preproc/ecpg_keywords.c Source File

PostgreSQL Source Code git master
ecpg_keywords.c
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1/*-------------------------------------------------------------------------
2 *
3 * ecpg_keywords.c
4 * lexical token lookup for reserved words in postgres embedded SQL
5 *
6 * IDENTIFICATION
7 * src/interfaces/ecpg/preproc/ecpg_keywords.c
8 *
9 *-------------------------------------------------------------------------
10 */
11
12#include "postgres_fe.h"
13
14#include <ctype.h>
15
16/* ScanKeywordList lookup data for ECPG keywords */
17#include "ecpg_kwlist_d.h"
18#include "preproc_extern.h"
19#include "preproc.h"
20
21/* Token codes for ECPG keywords */
22 #define PG_KEYWORD(kwname, value) value,
23
24 static const uint16 ECPGScanKeywordTokens[] = {
25#include "ecpg_kwlist.h"
26};
27
28#undef PG_KEYWORD
29
30
31/*
32 * ScanECPGKeywordLookup - see if a given word is a keyword
33 *
34 * Returns the token value of the keyword, or -1 if no match.
35 *
36 * Keywords are matched using the same case-folding rules as in the backend.
37 */
38int
39 ScanECPGKeywordLookup(const char *text)
40{
41 int kwnum;
42
43 /* First check SQL symbols defined by the backend. */
44 kwnum = ScanKeywordLookup(text, &ScanKeywords);
45 if (kwnum >= 0)
46 return SQLScanKeywordTokens[kwnum];
47
48 /* Try ECPG-specific keywords. */
49 kwnum = ScanKeywordLookup(text, &ScanECPGKeywords);
50 if (kwnum >= 0)
51 return ECPGScanKeywordTokens[kwnum];
52
53 return -1;
54}
uint16_t uint16
Definition: c.h:537
int ScanECPGKeywordLookup(const char *text)
Definition: ecpg_keywords.c:39
static const uint16 ECPGScanKeywordTokens[]
Definition: ecpg_keywords.c:24
const uint16 SQLScanKeywordTokens[]
Definition: keywords.c:34
PGDLLIMPORT const ScanKeywordList ScanKeywords
int ScanKeywordLookup(const char *str, const ScanKeywordList *keywords)
Definition: kwlookup.c:38
Definition: c.h:692

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