greenplumn keywords 源码
greenplumn keywords 代码
文件路径：/src/interfaces/ecpg/preproc/keywords.c
/*-------------------------------------------------------------------------
*
* keywords.c
* lexical token lookup for key words in PostgreSQL
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* src/interfaces/ecpg/preproc/keywords.c
*
*-------------------------------------------------------------------------
*/
#include "postgres_fe.h"
/*
* This is much trickier than it looks. We are #include'ing kwlist.h
* but the token numbers that go into the table are from preproc.h
* not the backend's gram.h. Therefore this token table will match
* the ScanKeywords table supplied from common/keywords.c, including all
* keywords known to the backend, but it will supply the token numbers used
* by ecpg's grammar, which is what we need. The ecpg grammar must
* define all the same token names the backend does, else we'll get
* undefined-symbol failures in this compile.
*/
#include "preproc_extern.h"
#include "preproc.h"
#define PG_KEYWORD(kwname, value, category) value,
const uint16 SQLScanKeywordTokens[] = {
#include "parser/kwlist.h"
};
#undef PG_KEYWORD
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