mirror of
https://git.postgresql.org/git/postgresql.git
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1200 lines
24 KiB
C
1200 lines
24 KiB
C
/*-------------------------------------------------------------------------
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*
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* readfuncs.c
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* Reader functions for Postgres tree nodes.
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*
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* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/nodes/readfuncs.c,v 1.210 2008/01/01 19:45:50 momjian Exp $
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*
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* NOTES
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* Path and Plan nodes do not have any readfuncs support, because we
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* never have occasion to read them in. (There was once code here that
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* claimed to read them, but it was broken as well as unused.) We
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* never read executor state trees, either.
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include <math.h>
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#include "nodes/parsenodes.h"
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#include "nodes/readfuncs.h"
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/*
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* Macros to simplify reading of different kinds of fields. Use these
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* wherever possible to reduce the chance for silly typos. Note that these
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* hard-wire conventions about the names of the local variables in a Read
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* routine.
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*/
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/* Macros for declaring appropriate local variables */
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/* A few guys need only local_node */
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#define READ_LOCALS_NO_FIELDS(nodeTypeName) \
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nodeTypeName *local_node = makeNode(nodeTypeName)
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/* And a few guys need only the pg_strtok support fields */
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#define READ_TEMP_LOCALS() \
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char *token; \
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int length
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/* ... but most need both */
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#define READ_LOCALS(nodeTypeName) \
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READ_LOCALS_NO_FIELDS(nodeTypeName); \
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READ_TEMP_LOCALS()
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/* Read an integer field (anything written as ":fldname %d") */
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#define READ_INT_FIELD(fldname) \
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token = pg_strtok(&length); /* skip :fldname */ \
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token = pg_strtok(&length); /* get field value */ \
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local_node->fldname = atoi(token)
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/* Read an unsigned integer field (anything written as ":fldname %u") */
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#define READ_UINT_FIELD(fldname) \
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token = pg_strtok(&length); /* skip :fldname */ \
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token = pg_strtok(&length); /* get field value */ \
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local_node->fldname = atoui(token)
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/* Read an OID field (don't hard-wire assumption that OID is same as uint) */
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#define READ_OID_FIELD(fldname) \
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token = pg_strtok(&length); /* skip :fldname */ \
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token = pg_strtok(&length); /* get field value */ \
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local_node->fldname = atooid(token)
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/* Read a char field (ie, one ascii character) */
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#define READ_CHAR_FIELD(fldname) \
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token = pg_strtok(&length); /* skip :fldname */ \
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token = pg_strtok(&length); /* get field value */ \
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local_node->fldname = token[0]
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/* Read an enumerated-type field that was written as an integer code */
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#define READ_ENUM_FIELD(fldname, enumtype) \
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token = pg_strtok(&length); /* skip :fldname */ \
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token = pg_strtok(&length); /* get field value */ \
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local_node->fldname = (enumtype) atoi(token)
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/* Read a float field */
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#define READ_FLOAT_FIELD(fldname) \
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token = pg_strtok(&length); /* skip :fldname */ \
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token = pg_strtok(&length); /* get field value */ \
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local_node->fldname = atof(token)
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/* Read a boolean field */
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#define READ_BOOL_FIELD(fldname) \
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token = pg_strtok(&length); /* skip :fldname */ \
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token = pg_strtok(&length); /* get field value */ \
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local_node->fldname = strtobool(token)
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/* Read a character-string field */
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#define READ_STRING_FIELD(fldname) \
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token = pg_strtok(&length); /* skip :fldname */ \
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token = pg_strtok(&length); /* get field value */ \
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local_node->fldname = nullable_string(token, length)
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/* Read a Node field */
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#define READ_NODE_FIELD(fldname) \
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token = pg_strtok(&length); /* skip :fldname */ \
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local_node->fldname = nodeRead(NULL, 0)
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/* Routine exit */
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#define READ_DONE() \
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return local_node
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/*
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* NOTE: use atoi() to read values written with %d, or atoui() to read
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* values written with %u in outfuncs.c. An exception is OID values,
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* for which use atooid(). (As of 7.1, outfuncs.c writes OIDs as %u,
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* but this will probably change in the future.)
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*/
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#define atoui(x) ((unsigned int) strtoul((x), NULL, 10))
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#define atooid(x) ((Oid) strtoul((x), NULL, 10))
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#define strtobool(x) ((*(x) == 't') ? true : false)
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#define nullable_string(token,length) \
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((length) == 0 ? NULL : debackslash(token, length))
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static Datum readDatum(bool typbyval);
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/*
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* _readQuery
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*/
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static Query *
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_readQuery(void)
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{
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READ_LOCALS(Query);
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READ_ENUM_FIELD(commandType, CmdType);
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READ_ENUM_FIELD(querySource, QuerySource);
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READ_BOOL_FIELD(canSetTag);
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READ_NODE_FIELD(utilityStmt);
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READ_INT_FIELD(resultRelation);
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READ_NODE_FIELD(intoClause);
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READ_BOOL_FIELD(hasAggs);
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READ_BOOL_FIELD(hasSubLinks);
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READ_NODE_FIELD(rtable);
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READ_NODE_FIELD(jointree);
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READ_NODE_FIELD(targetList);
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READ_NODE_FIELD(returningList);
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READ_NODE_FIELD(groupClause);
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READ_NODE_FIELD(havingQual);
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READ_NODE_FIELD(distinctClause);
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READ_NODE_FIELD(sortClause);
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READ_NODE_FIELD(limitOffset);
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READ_NODE_FIELD(limitCount);
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READ_NODE_FIELD(rowMarks);
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READ_NODE_FIELD(setOperations);
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READ_DONE();
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}
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/*
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* _readNotifyStmt
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*/
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static NotifyStmt *
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_readNotifyStmt(void)
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{
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READ_LOCALS(NotifyStmt);
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READ_NODE_FIELD(relation);
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READ_DONE();
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}
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/*
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* _readDeclareCursorStmt
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*/
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static DeclareCursorStmt *
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_readDeclareCursorStmt(void)
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{
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READ_LOCALS(DeclareCursorStmt);
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READ_STRING_FIELD(portalname);
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READ_INT_FIELD(options);
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READ_NODE_FIELD(query);
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READ_DONE();
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}
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/*
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* _readSortClause
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*/
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static SortClause *
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_readSortClause(void)
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{
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READ_LOCALS(SortClause);
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READ_UINT_FIELD(tleSortGroupRef);
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READ_OID_FIELD(sortop);
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READ_BOOL_FIELD(nulls_first);
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READ_DONE();
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}
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/*
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* _readGroupClause
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*/
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static GroupClause *
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_readGroupClause(void)
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{
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READ_LOCALS(GroupClause);
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READ_UINT_FIELD(tleSortGroupRef);
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READ_OID_FIELD(sortop);
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READ_BOOL_FIELD(nulls_first);
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READ_DONE();
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}
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/*
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* _readRowMarkClause
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*/
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static RowMarkClause *
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_readRowMarkClause(void)
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{
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READ_LOCALS(RowMarkClause);
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READ_UINT_FIELD(rti);
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READ_BOOL_FIELD(forUpdate);
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READ_BOOL_FIELD(noWait);
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READ_DONE();
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}
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/*
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* _readSetOperationStmt
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*/
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static SetOperationStmt *
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_readSetOperationStmt(void)
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{
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READ_LOCALS(SetOperationStmt);
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READ_ENUM_FIELD(op, SetOperation);
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READ_BOOL_FIELD(all);
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READ_NODE_FIELD(larg);
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READ_NODE_FIELD(rarg);
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READ_NODE_FIELD(colTypes);
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READ_NODE_FIELD(colTypmods);
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READ_DONE();
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}
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/*
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* Stuff from primnodes.h.
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*/
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static Alias *
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_readAlias(void)
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{
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READ_LOCALS(Alias);
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READ_STRING_FIELD(aliasname);
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READ_NODE_FIELD(colnames);
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READ_DONE();
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}
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static RangeVar *
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_readRangeVar(void)
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{
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READ_LOCALS(RangeVar);
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local_node->catalogname = NULL; /* not currently saved in output
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* format */
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READ_STRING_FIELD(schemaname);
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READ_STRING_FIELD(relname);
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READ_ENUM_FIELD(inhOpt, InhOption);
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READ_BOOL_FIELD(istemp);
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READ_NODE_FIELD(alias);
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READ_DONE();
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}
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static IntoClause *
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_readIntoClause(void)
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{
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READ_LOCALS(IntoClause);
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READ_NODE_FIELD(rel);
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READ_NODE_FIELD(colNames);
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READ_NODE_FIELD(options);
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READ_ENUM_FIELD(onCommit, OnCommitAction);
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READ_STRING_FIELD(tableSpaceName);
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READ_DONE();
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}
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/*
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* _readVar
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*/
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static Var *
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_readVar(void)
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{
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READ_LOCALS(Var);
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READ_UINT_FIELD(varno);
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READ_INT_FIELD(varattno);
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READ_OID_FIELD(vartype);
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READ_INT_FIELD(vartypmod);
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READ_UINT_FIELD(varlevelsup);
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READ_UINT_FIELD(varnoold);
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READ_INT_FIELD(varoattno);
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READ_DONE();
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}
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/*
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* _readConst
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*/
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static Const *
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_readConst(void)
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{
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READ_LOCALS(Const);
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READ_OID_FIELD(consttype);
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READ_INT_FIELD(consttypmod);
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READ_INT_FIELD(constlen);
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READ_BOOL_FIELD(constbyval);
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READ_BOOL_FIELD(constisnull);
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token = pg_strtok(&length); /* skip :constvalue */
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if (local_node->constisnull)
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token = pg_strtok(&length); /* skip "<>" */
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else
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local_node->constvalue = readDatum(local_node->constbyval);
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READ_DONE();
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}
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/*
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* _readParam
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*/
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static Param *
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_readParam(void)
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{
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READ_LOCALS(Param);
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READ_ENUM_FIELD(paramkind, ParamKind);
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READ_INT_FIELD(paramid);
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READ_OID_FIELD(paramtype);
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READ_INT_FIELD(paramtypmod);
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READ_DONE();
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}
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/*
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* _readAggref
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*/
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static Aggref *
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_readAggref(void)
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{
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READ_LOCALS(Aggref);
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READ_OID_FIELD(aggfnoid);
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READ_OID_FIELD(aggtype);
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READ_NODE_FIELD(args);
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READ_UINT_FIELD(agglevelsup);
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READ_BOOL_FIELD(aggstar);
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READ_BOOL_FIELD(aggdistinct);
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READ_DONE();
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}
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/*
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* _readArrayRef
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*/
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static ArrayRef *
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_readArrayRef(void)
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{
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READ_LOCALS(ArrayRef);
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READ_OID_FIELD(refarraytype);
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READ_OID_FIELD(refelemtype);
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READ_INT_FIELD(reftypmod);
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READ_NODE_FIELD(refupperindexpr);
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READ_NODE_FIELD(reflowerindexpr);
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READ_NODE_FIELD(refexpr);
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READ_NODE_FIELD(refassgnexpr);
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READ_DONE();
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}
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/*
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* _readFuncExpr
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*/
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static FuncExpr *
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_readFuncExpr(void)
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{
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READ_LOCALS(FuncExpr);
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READ_OID_FIELD(funcid);
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READ_OID_FIELD(funcresulttype);
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READ_BOOL_FIELD(funcretset);
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READ_ENUM_FIELD(funcformat, CoercionForm);
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READ_NODE_FIELD(args);
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READ_DONE();
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}
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/*
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* _readOpExpr
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*/
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static OpExpr *
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_readOpExpr(void)
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{
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READ_LOCALS(OpExpr);
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READ_OID_FIELD(opno);
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READ_OID_FIELD(opfuncid);
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/*
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* The opfuncid is stored in the textual format primarily for debugging
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* and documentation reasons. We want to always read it as zero to force
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* it to be re-looked-up in the pg_operator entry. This ensures that
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* stored rules don't have hidden dependencies on operators' functions.
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* (We don't currently support an ALTER OPERATOR command, but might
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* someday.)
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*/
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local_node->opfuncid = InvalidOid;
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READ_OID_FIELD(opresulttype);
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READ_BOOL_FIELD(opretset);
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READ_NODE_FIELD(args);
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READ_DONE();
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}
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/*
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* _readDistinctExpr
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*/
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static DistinctExpr *
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_readDistinctExpr(void)
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{
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READ_LOCALS(DistinctExpr);
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READ_OID_FIELD(opno);
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READ_OID_FIELD(opfuncid);
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/*
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* The opfuncid is stored in the textual format primarily for debugging
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* and documentation reasons. We want to always read it as zero to force
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* it to be re-looked-up in the pg_operator entry. This ensures that
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* stored rules don't have hidden dependencies on operators' functions.
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* (We don't currently support an ALTER OPERATOR command, but might
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* someday.)
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*/
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local_node->opfuncid = InvalidOid;
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READ_OID_FIELD(opresulttype);
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READ_BOOL_FIELD(opretset);
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READ_NODE_FIELD(args);
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READ_DONE();
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}
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/*
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* _readScalarArrayOpExpr
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*/
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static ScalarArrayOpExpr *
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_readScalarArrayOpExpr(void)
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{
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READ_LOCALS(ScalarArrayOpExpr);
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READ_OID_FIELD(opno);
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READ_OID_FIELD(opfuncid);
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/*
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* The opfuncid is stored in the textual format primarily for debugging
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* and documentation reasons. We want to always read it as zero to force
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* it to be re-looked-up in the pg_operator entry. This ensures that
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* stored rules don't have hidden dependencies on operators' functions.
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* (We don't currently support an ALTER OPERATOR command, but might
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* someday.)
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*/
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local_node->opfuncid = InvalidOid;
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READ_BOOL_FIELD(useOr);
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READ_NODE_FIELD(args);
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READ_DONE();
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}
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/*
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* _readBoolExpr
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*/
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static BoolExpr *
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_readBoolExpr(void)
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{
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READ_LOCALS(BoolExpr);
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/* do-it-yourself enum representation */
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token = pg_strtok(&length); /* skip :boolop */
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token = pg_strtok(&length); /* get field value */
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if (strncmp(token, "and", 3) == 0)
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local_node->boolop = AND_EXPR;
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else if (strncmp(token, "or", 2) == 0)
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local_node->boolop = OR_EXPR;
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else if (strncmp(token, "not", 3) == 0)
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local_node->boolop = NOT_EXPR;
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else
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elog(ERROR, "unrecognized boolop \"%.*s\"", length, token);
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READ_NODE_FIELD(args);
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READ_DONE();
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}
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/*
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* _readSubLink
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*/
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static SubLink *
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_readSubLink(void)
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{
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READ_LOCALS(SubLink);
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READ_ENUM_FIELD(subLinkType, SubLinkType);
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READ_NODE_FIELD(testexpr);
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READ_NODE_FIELD(operName);
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READ_NODE_FIELD(subselect);
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READ_DONE();
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}
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/*
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* _readSubPlan is not needed since it doesn't appear in stored rules.
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*/
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/*
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* _readFieldSelect
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*/
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static FieldSelect *
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_readFieldSelect(void)
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{
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READ_LOCALS(FieldSelect);
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READ_NODE_FIELD(arg);
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READ_INT_FIELD(fieldnum);
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READ_OID_FIELD(resulttype);
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READ_INT_FIELD(resulttypmod);
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READ_DONE();
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}
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/*
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* _readFieldStore
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*/
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static FieldStore *
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_readFieldStore(void)
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{
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READ_LOCALS(FieldStore);
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READ_NODE_FIELD(arg);
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READ_NODE_FIELD(newvals);
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READ_NODE_FIELD(fieldnums);
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READ_OID_FIELD(resulttype);
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READ_DONE();
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}
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/*
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* _readRelabelType
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*/
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static RelabelType *
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_readRelabelType(void)
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{
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READ_LOCALS(RelabelType);
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READ_NODE_FIELD(arg);
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READ_OID_FIELD(resulttype);
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|
READ_INT_FIELD(resulttypmod);
|
|
READ_ENUM_FIELD(relabelformat, CoercionForm);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readCoerceViaIO
|
|
*/
|
|
static CoerceViaIO *
|
|
_readCoerceViaIO(void)
|
|
{
|
|
READ_LOCALS(CoerceViaIO);
|
|
|
|
READ_NODE_FIELD(arg);
|
|
READ_OID_FIELD(resulttype);
|
|
READ_ENUM_FIELD(coerceformat, CoercionForm);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readArrayCoerceExpr
|
|
*/
|
|
static ArrayCoerceExpr *
|
|
_readArrayCoerceExpr(void)
|
|
{
|
|
READ_LOCALS(ArrayCoerceExpr);
|
|
|
|
READ_NODE_FIELD(arg);
|
|
READ_OID_FIELD(elemfuncid);
|
|
READ_OID_FIELD(resulttype);
|
|
READ_INT_FIELD(resulttypmod);
|
|
READ_BOOL_FIELD(isExplicit);
|
|
READ_ENUM_FIELD(coerceformat, CoercionForm);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readConvertRowtypeExpr
|
|
*/
|
|
static ConvertRowtypeExpr *
|
|
_readConvertRowtypeExpr(void)
|
|
{
|
|
READ_LOCALS(ConvertRowtypeExpr);
|
|
|
|
READ_NODE_FIELD(arg);
|
|
READ_OID_FIELD(resulttype);
|
|
READ_ENUM_FIELD(convertformat, CoercionForm);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readCaseExpr
|
|
*/
|
|
static CaseExpr *
|
|
_readCaseExpr(void)
|
|
{
|
|
READ_LOCALS(CaseExpr);
|
|
|
|
READ_OID_FIELD(casetype);
|
|
READ_NODE_FIELD(arg);
|
|
READ_NODE_FIELD(args);
|
|
READ_NODE_FIELD(defresult);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readCaseWhen
|
|
*/
|
|
static CaseWhen *
|
|
_readCaseWhen(void)
|
|
{
|
|
READ_LOCALS(CaseWhen);
|
|
|
|
READ_NODE_FIELD(expr);
|
|
READ_NODE_FIELD(result);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readCaseTestExpr
|
|
*/
|
|
static CaseTestExpr *
|
|
_readCaseTestExpr(void)
|
|
{
|
|
READ_LOCALS(CaseTestExpr);
|
|
|
|
READ_OID_FIELD(typeId);
|
|
READ_INT_FIELD(typeMod);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readArrayExpr
|
|
*/
|
|
static ArrayExpr *
|
|
_readArrayExpr(void)
|
|
{
|
|
READ_LOCALS(ArrayExpr);
|
|
|
|
READ_OID_FIELD(array_typeid);
|
|
READ_OID_FIELD(element_typeid);
|
|
READ_NODE_FIELD(elements);
|
|
READ_BOOL_FIELD(multidims);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readRowExpr
|
|
*/
|
|
static RowExpr *
|
|
_readRowExpr(void)
|
|
{
|
|
READ_LOCALS(RowExpr);
|
|
|
|
READ_NODE_FIELD(args);
|
|
READ_OID_FIELD(row_typeid);
|
|
READ_ENUM_FIELD(row_format, CoercionForm);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readRowCompareExpr
|
|
*/
|
|
static RowCompareExpr *
|
|
_readRowCompareExpr(void)
|
|
{
|
|
READ_LOCALS(RowCompareExpr);
|
|
|
|
READ_ENUM_FIELD(rctype, RowCompareType);
|
|
READ_NODE_FIELD(opnos);
|
|
READ_NODE_FIELD(opfamilies);
|
|
READ_NODE_FIELD(largs);
|
|
READ_NODE_FIELD(rargs);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readCoalesceExpr
|
|
*/
|
|
static CoalesceExpr *
|
|
_readCoalesceExpr(void)
|
|
{
|
|
READ_LOCALS(CoalesceExpr);
|
|
|
|
READ_OID_FIELD(coalescetype);
|
|
READ_NODE_FIELD(args);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readMinMaxExpr
|
|
*/
|
|
static MinMaxExpr *
|
|
_readMinMaxExpr(void)
|
|
{
|
|
READ_LOCALS(MinMaxExpr);
|
|
|
|
READ_OID_FIELD(minmaxtype);
|
|
READ_ENUM_FIELD(op, MinMaxOp);
|
|
READ_NODE_FIELD(args);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readXmlExpr
|
|
*/
|
|
static XmlExpr *
|
|
_readXmlExpr(void)
|
|
{
|
|
READ_LOCALS(XmlExpr);
|
|
|
|
READ_ENUM_FIELD(op, XmlExprOp);
|
|
READ_STRING_FIELD(name);
|
|
READ_NODE_FIELD(named_args);
|
|
READ_NODE_FIELD(arg_names);
|
|
READ_NODE_FIELD(args);
|
|
READ_ENUM_FIELD(xmloption, XmlOptionType);
|
|
READ_OID_FIELD(type);
|
|
READ_INT_FIELD(typmod);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readNullIfExpr
|
|
*/
|
|
static NullIfExpr *
|
|
_readNullIfExpr(void)
|
|
{
|
|
READ_LOCALS(NullIfExpr);
|
|
|
|
READ_OID_FIELD(opno);
|
|
READ_OID_FIELD(opfuncid);
|
|
|
|
/*
|
|
* The opfuncid is stored in the textual format primarily for debugging
|
|
* and documentation reasons. We want to always read it as zero to force
|
|
* it to be re-looked-up in the pg_operator entry. This ensures that
|
|
* stored rules don't have hidden dependencies on operators' functions.
|
|
* (We don't currently support an ALTER OPERATOR command, but might
|
|
* someday.)
|
|
*/
|
|
local_node->opfuncid = InvalidOid;
|
|
|
|
READ_OID_FIELD(opresulttype);
|
|
READ_BOOL_FIELD(opretset);
|
|
READ_NODE_FIELD(args);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readNullTest
|
|
*/
|
|
static NullTest *
|
|
_readNullTest(void)
|
|
{
|
|
READ_LOCALS(NullTest);
|
|
|
|
READ_NODE_FIELD(arg);
|
|
READ_ENUM_FIELD(nulltesttype, NullTestType);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readBooleanTest
|
|
*/
|
|
static BooleanTest *
|
|
_readBooleanTest(void)
|
|
{
|
|
READ_LOCALS(BooleanTest);
|
|
|
|
READ_NODE_FIELD(arg);
|
|
READ_ENUM_FIELD(booltesttype, BoolTestType);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readCoerceToDomain
|
|
*/
|
|
static CoerceToDomain *
|
|
_readCoerceToDomain(void)
|
|
{
|
|
READ_LOCALS(CoerceToDomain);
|
|
|
|
READ_NODE_FIELD(arg);
|
|
READ_OID_FIELD(resulttype);
|
|
READ_INT_FIELD(resulttypmod);
|
|
READ_ENUM_FIELD(coercionformat, CoercionForm);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readCoerceToDomainValue
|
|
*/
|
|
static CoerceToDomainValue *
|
|
_readCoerceToDomainValue(void)
|
|
{
|
|
READ_LOCALS(CoerceToDomainValue);
|
|
|
|
READ_OID_FIELD(typeId);
|
|
READ_INT_FIELD(typeMod);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readSetToDefault
|
|
*/
|
|
static SetToDefault *
|
|
_readSetToDefault(void)
|
|
{
|
|
READ_LOCALS(SetToDefault);
|
|
|
|
READ_OID_FIELD(typeId);
|
|
READ_INT_FIELD(typeMod);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readCurrentOfExpr
|
|
*/
|
|
static CurrentOfExpr *
|
|
_readCurrentOfExpr(void)
|
|
{
|
|
READ_LOCALS(CurrentOfExpr);
|
|
|
|
READ_UINT_FIELD(cvarno);
|
|
READ_STRING_FIELD(cursor_name);
|
|
READ_INT_FIELD(cursor_param);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readTargetEntry
|
|
*/
|
|
static TargetEntry *
|
|
_readTargetEntry(void)
|
|
{
|
|
READ_LOCALS(TargetEntry);
|
|
|
|
READ_NODE_FIELD(expr);
|
|
READ_INT_FIELD(resno);
|
|
READ_STRING_FIELD(resname);
|
|
READ_UINT_FIELD(ressortgroupref);
|
|
READ_OID_FIELD(resorigtbl);
|
|
READ_INT_FIELD(resorigcol);
|
|
READ_BOOL_FIELD(resjunk);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readRangeTblRef
|
|
*/
|
|
static RangeTblRef *
|
|
_readRangeTblRef(void)
|
|
{
|
|
READ_LOCALS(RangeTblRef);
|
|
|
|
READ_INT_FIELD(rtindex);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readJoinExpr
|
|
*/
|
|
static JoinExpr *
|
|
_readJoinExpr(void)
|
|
{
|
|
READ_LOCALS(JoinExpr);
|
|
|
|
READ_ENUM_FIELD(jointype, JoinType);
|
|
READ_BOOL_FIELD(isNatural);
|
|
READ_NODE_FIELD(larg);
|
|
READ_NODE_FIELD(rarg);
|
|
READ_NODE_FIELD(using);
|
|
READ_NODE_FIELD(quals);
|
|
READ_NODE_FIELD(alias);
|
|
READ_INT_FIELD(rtindex);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
/*
|
|
* _readFromExpr
|
|
*/
|
|
static FromExpr *
|
|
_readFromExpr(void)
|
|
{
|
|
READ_LOCALS(FromExpr);
|
|
|
|
READ_NODE_FIELD(fromlist);
|
|
READ_NODE_FIELD(quals);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
|
|
/*
|
|
* Stuff from parsenodes.h.
|
|
*/
|
|
|
|
/*
|
|
* _readRangeTblEntry
|
|
*/
|
|
static RangeTblEntry *
|
|
_readRangeTblEntry(void)
|
|
{
|
|
READ_LOCALS(RangeTblEntry);
|
|
|
|
/* put alias + eref first to make dump more legible */
|
|
READ_NODE_FIELD(alias);
|
|
READ_NODE_FIELD(eref);
|
|
READ_ENUM_FIELD(rtekind, RTEKind);
|
|
|
|
switch (local_node->rtekind)
|
|
{
|
|
case RTE_RELATION:
|
|
case RTE_SPECIAL:
|
|
READ_OID_FIELD(relid);
|
|
break;
|
|
case RTE_SUBQUERY:
|
|
READ_NODE_FIELD(subquery);
|
|
break;
|
|
case RTE_FUNCTION:
|
|
READ_NODE_FIELD(funcexpr);
|
|
READ_NODE_FIELD(funccoltypes);
|
|
READ_NODE_FIELD(funccoltypmods);
|
|
break;
|
|
case RTE_VALUES:
|
|
READ_NODE_FIELD(values_lists);
|
|
break;
|
|
case RTE_JOIN:
|
|
READ_ENUM_FIELD(jointype, JoinType);
|
|
READ_NODE_FIELD(joinaliasvars);
|
|
break;
|
|
default:
|
|
elog(ERROR, "unrecognized RTE kind: %d",
|
|
(int) local_node->rtekind);
|
|
break;
|
|
}
|
|
|
|
READ_BOOL_FIELD(inh);
|
|
READ_BOOL_FIELD(inFromCl);
|
|
READ_UINT_FIELD(requiredPerms);
|
|
READ_OID_FIELD(checkAsUser);
|
|
|
|
READ_DONE();
|
|
}
|
|
|
|
|
|
/*
|
|
* parseNodeString
|
|
*
|
|
* Given a character string representing a node tree, parseNodeString creates
|
|
* the internal node structure.
|
|
*
|
|
* The string to be read must already have been loaded into pg_strtok().
|
|
*/
|
|
Node *
|
|
parseNodeString(void)
|
|
{
|
|
void *return_value;
|
|
|
|
READ_TEMP_LOCALS();
|
|
|
|
token = pg_strtok(&length);
|
|
|
|
#define MATCH(tokname, namelen) \
|
|
(length == namelen && strncmp(token, tokname, namelen) == 0)
|
|
|
|
if (MATCH("QUERY", 5))
|
|
return_value = _readQuery();
|
|
else if (MATCH("SORTCLAUSE", 10))
|
|
return_value = _readSortClause();
|
|
else if (MATCH("GROUPCLAUSE", 11))
|
|
return_value = _readGroupClause();
|
|
else if (MATCH("ROWMARKCLAUSE", 13))
|
|
return_value = _readRowMarkClause();
|
|
else if (MATCH("SETOPERATIONSTMT", 16))
|
|
return_value = _readSetOperationStmt();
|
|
else if (MATCH("ALIAS", 5))
|
|
return_value = _readAlias();
|
|
else if (MATCH("RANGEVAR", 8))
|
|
return_value = _readRangeVar();
|
|
else if (MATCH("INTOCLAUSE", 10))
|
|
return_value = _readIntoClause();
|
|
else if (MATCH("VAR", 3))
|
|
return_value = _readVar();
|
|
else if (MATCH("CONST", 5))
|
|
return_value = _readConst();
|
|
else if (MATCH("PARAM", 5))
|
|
return_value = _readParam();
|
|
else if (MATCH("AGGREF", 6))
|
|
return_value = _readAggref();
|
|
else if (MATCH("ARRAYREF", 8))
|
|
return_value = _readArrayRef();
|
|
else if (MATCH("FUNCEXPR", 8))
|
|
return_value = _readFuncExpr();
|
|
else if (MATCH("OPEXPR", 6))
|
|
return_value = _readOpExpr();
|
|
else if (MATCH("DISTINCTEXPR", 12))
|
|
return_value = _readDistinctExpr();
|
|
else if (MATCH("SCALARARRAYOPEXPR", 17))
|
|
return_value = _readScalarArrayOpExpr();
|
|
else if (MATCH("BOOLEXPR", 8))
|
|
return_value = _readBoolExpr();
|
|
else if (MATCH("SUBLINK", 7))
|
|
return_value = _readSubLink();
|
|
else if (MATCH("FIELDSELECT", 11))
|
|
return_value = _readFieldSelect();
|
|
else if (MATCH("FIELDSTORE", 10))
|
|
return_value = _readFieldStore();
|
|
else if (MATCH("RELABELTYPE", 11))
|
|
return_value = _readRelabelType();
|
|
else if (MATCH("COERCEVIAIO", 11))
|
|
return_value = _readCoerceViaIO();
|
|
else if (MATCH("ARRAYCOERCEEXPR", 15))
|
|
return_value = _readArrayCoerceExpr();
|
|
else if (MATCH("CONVERTROWTYPEEXPR", 18))
|
|
return_value = _readConvertRowtypeExpr();
|
|
else if (MATCH("CASE", 4))
|
|
return_value = _readCaseExpr();
|
|
else if (MATCH("WHEN", 4))
|
|
return_value = _readCaseWhen();
|
|
else if (MATCH("CASETESTEXPR", 12))
|
|
return_value = _readCaseTestExpr();
|
|
else if (MATCH("ARRAY", 5))
|
|
return_value = _readArrayExpr();
|
|
else if (MATCH("ROW", 3))
|
|
return_value = _readRowExpr();
|
|
else if (MATCH("ROWCOMPARE", 10))
|
|
return_value = _readRowCompareExpr();
|
|
else if (MATCH("COALESCE", 8))
|
|
return_value = _readCoalesceExpr();
|
|
else if (MATCH("MINMAX", 6))
|
|
return_value = _readMinMaxExpr();
|
|
else if (MATCH("XMLEXPR", 7))
|
|
return_value = _readXmlExpr();
|
|
else if (MATCH("NULLIFEXPR", 10))
|
|
return_value = _readNullIfExpr();
|
|
else if (MATCH("NULLTEST", 8))
|
|
return_value = _readNullTest();
|
|
else if (MATCH("BOOLEANTEST", 11))
|
|
return_value = _readBooleanTest();
|
|
else if (MATCH("COERCETODOMAIN", 14))
|
|
return_value = _readCoerceToDomain();
|
|
else if (MATCH("COERCETODOMAINVALUE", 19))
|
|
return_value = _readCoerceToDomainValue();
|
|
else if (MATCH("SETTODEFAULT", 12))
|
|
return_value = _readSetToDefault();
|
|
else if (MATCH("CURRENTOFEXPR", 13))
|
|
return_value = _readCurrentOfExpr();
|
|
else if (MATCH("TARGETENTRY", 11))
|
|
return_value = _readTargetEntry();
|
|
else if (MATCH("RANGETBLREF", 11))
|
|
return_value = _readRangeTblRef();
|
|
else if (MATCH("JOINEXPR", 8))
|
|
return_value = _readJoinExpr();
|
|
else if (MATCH("FROMEXPR", 8))
|
|
return_value = _readFromExpr();
|
|
else if (MATCH("RTE", 3))
|
|
return_value = _readRangeTblEntry();
|
|
else if (MATCH("NOTIFY", 6))
|
|
return_value = _readNotifyStmt();
|
|
else if (MATCH("DECLARECURSOR", 13))
|
|
return_value = _readDeclareCursorStmt();
|
|
else
|
|
{
|
|
elog(ERROR, "badly formatted node string \"%.32s\"...", token);
|
|
return_value = NULL; /* keep compiler quiet */
|
|
}
|
|
|
|
return (Node *) return_value;
|
|
}
|
|
|
|
|
|
/*
|
|
* readDatum
|
|
*
|
|
* Given a string representation of a constant, recreate the appropriate
|
|
* Datum. The string representation embeds length info, but not byValue,
|
|
* so we must be told that.
|
|
*/
|
|
static Datum
|
|
readDatum(bool typbyval)
|
|
{
|
|
Size length,
|
|
i;
|
|
int tokenLength;
|
|
char *token;
|
|
Datum res;
|
|
char *s;
|
|
|
|
/*
|
|
* read the actual length of the value
|
|
*/
|
|
token = pg_strtok(&tokenLength);
|
|
length = atoui(token);
|
|
|
|
token = pg_strtok(&tokenLength); /* read the '[' */
|
|
if (token == NULL || token[0] != '[')
|
|
elog(ERROR, "expected \"[\" to start datum, but got \"%s\"; length = %lu",
|
|
token ? (const char *) token : "[NULL]",
|
|
(unsigned long) length);
|
|
|
|
if (typbyval)
|
|
{
|
|
if (length > (Size) sizeof(Datum))
|
|
elog(ERROR, "byval datum but length = %lu",
|
|
(unsigned long) length);
|
|
res = (Datum) 0;
|
|
s = (char *) (&res);
|
|
for (i = 0; i < (Size) sizeof(Datum); i++)
|
|
{
|
|
token = pg_strtok(&tokenLength);
|
|
s[i] = (char) atoi(token);
|
|
}
|
|
}
|
|
else if (length <= 0)
|
|
res = (Datum) NULL;
|
|
else
|
|
{
|
|
s = (char *) palloc(length);
|
|
for (i = 0; i < length; i++)
|
|
{
|
|
token = pg_strtok(&tokenLength);
|
|
s[i] = (char) atoi(token);
|
|
}
|
|
res = PointerGetDatum(s);
|
|
}
|
|
|
|
token = pg_strtok(&tokenLength); /* read the ']' */
|
|
if (token == NULL || token[0] != ']')
|
|
elog(ERROR, "expected \"]\" to end datum, but got \"%s\"; length = %lu",
|
|
token ? (const char *) token : "[NULL]",
|
|
(unsigned long) length);
|
|
|
|
return res;
|
|
}
|