greenplumn readfuncs 源码
greenplumn readfuncs 代码
文件路径：/src/include/nodes/readfuncs.h
/*-------------------------------------------------------------------------
*
* readfuncs.h
* header file for read.c and readfuncs.c. These functions are internal
* to the stringToNode interface and should not be used by anyone else.
*
* Portions Copyright (c) 2006-2009, Greenplum inc
* Portions Copyright (c) 2012-Present VMware, Inc. or its affiliates.
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/nodes/readfuncs.h
*
*-------------------------------------------------------------------------
*/
#ifndef READFUNCS_H
#define READFUNCS_H
#include "nodes/nodes.h"
/*
* variable in read.c that needs to be accessible to readfuncs.c
*/
#ifdef WRITE_READ_PARSE_PLAN_TREES
extern bool restore_location_fields;
#endif
/*
* prototypes for functions in read.c (the lisp token parser)
*/
extern const char *pg_strtok(int *length);
extern char *debackslash(const char *token, int length);
extern void *nodeRead(const char *token, int tok_len);
/*
* nodeReadSkip
* Skips next item (a token, list or subtree).
*/
void
nodeReadSkip(void);
/*
* pg_strtok_peek_fldname
* Peeks at the token that will be returned by the next call to
* pg_strtok. Returns true if the token is, case-sensitively,
* :fldname
*/
bool
pg_strtok_peek_fldname(const char *fldname);
/*-------------------------------------------------------------------------
* prototypes for functions in readfuncs.c
*/
extern Node *parseNodeString(void);
#endif /* READFUNCS_H */
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