outfuncs.c

PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统

	WRITE_NODE_FIELD(arg);
	WRITE_NODE_FIELD(typename);
}

static void
_outIndexElem(StringInfo str, IndexElem *node)
{
	WRITE_NODE_TYPE("INDEXELEM");

	WRITE_STRING_FIELD(name);
	WRITE_NODE_FIELD(expr);
	WRITE_NODE_FIELD(opclass);
}

static void
_outQuery(StringInfo str, Query *node)
{
	WRITE_NODE_TYPE("QUERY");

	WRITE_ENUM_FIELD(commandType, CmdType);
	WRITE_ENUM_FIELD(querySource, QuerySource);
	WRITE_BOOL_FIELD(canSetTag);

	/*
	 * Hack to work around missing outfuncs routines for a lot of the
	 * utility-statement node types.  (The only one we actually *need* for
	 * rules support is NotifyStmt.)  Someday we ought to support 'em all, but
	 * for the meantime do this to avoid getting lots of warnings when running
	 * with debug_print_parse on.
	 */
	if (node->utilityStmt)
	{
		switch (nodeTag(node->utilityStmt))
		{
			case T_CreateStmt:
			case T_IndexStmt:
			case T_NotifyStmt:
			case T_DeclareCursorStmt:
				WRITE_NODE_FIELD(utilityStmt);
				break;
			default:
				appendStringInfo(str, " :utilityStmt ?");
				break;
		}
	}
	else
		appendStringInfo(str, " :utilityStmt <>");

	WRITE_INT_FIELD(resultRelation);
	WRITE_NODE_FIELD(into);
	WRITE_BOOL_FIELD(hasAggs);
	WRITE_BOOL_FIELD(hasSubLinks);
	WRITE_NODE_FIELD(rtable);
	WRITE_NODE_FIELD(jointree);
	WRITE_NODE_FIELD(rowMarks);
	WRITE_BOOL_FIELD(forUpdate);
	WRITE_BOOL_FIELD(rowNoWait);
	WRITE_NODE_FIELD(targetList);
	WRITE_NODE_FIELD(groupClause);
	WRITE_NODE_FIELD(havingQual);
	WRITE_NODE_FIELD(distinctClause);
	WRITE_NODE_FIELD(sortClause);
	WRITE_NODE_FIELD(limitOffset);
	WRITE_NODE_FIELD(limitCount);
	WRITE_NODE_FIELD(setOperations);
	WRITE_NODE_FIELD(resultRelations);
}

static void
_outSortClause(StringInfo str, SortClause *node)
{
	WRITE_NODE_TYPE("SORTCLAUSE");

	WRITE_UINT_FIELD(tleSortGroupRef);
	WRITE_OID_FIELD(sortop);
}

static void
_outGroupClause(StringInfo str, GroupClause *node)
{
	WRITE_NODE_TYPE("GROUPCLAUSE");

	WRITE_UINT_FIELD(tleSortGroupRef);
	WRITE_OID_FIELD(sortop);
}

static void
_outSetOperationStmt(StringInfo str, SetOperationStmt *node)
{
	WRITE_NODE_TYPE("SETOPERATIONSTMT");

	WRITE_ENUM_FIELD(op, SetOperation);
	WRITE_BOOL_FIELD(all);
	WRITE_NODE_FIELD(larg);
	WRITE_NODE_FIELD(rarg);
	WRITE_NODE_FIELD(colTypes);
}

static void
_outRangeTblEntry(StringInfo str, RangeTblEntry *node)
{
	WRITE_NODE_TYPE("RTE");

	/* put alias + eref first to make dump more legible */
	WRITE_NODE_FIELD(alias);
	WRITE_NODE_FIELD(eref);
	WRITE_ENUM_FIELD(rtekind, RTEKind);

	switch (node->rtekind)
	{
		case RTE_RELATION:
		case RTE_SPECIAL:
			WRITE_OID_FIELD(relid);
			break;
		case RTE_SUBQUERY:
			WRITE_NODE_FIELD(subquery);
			break;
		case RTE_FUNCTION:
			WRITE_NODE_FIELD(funcexpr);
			WRITE_NODE_FIELD(coldeflist);
			break;
		case RTE_JOIN:
			WRITE_ENUM_FIELD(jointype, JoinType);
			WRITE_NODE_FIELD(joinaliasvars);
			break;
		default:
			elog(ERROR, "unrecognized RTE kind: %d", (int) node->rtekind);
			break;
	}

	WRITE_BOOL_FIELD(inh);
	WRITE_BOOL_FIELD(inFromCl);
	WRITE_UINT_FIELD(requiredPerms);
	WRITE_OID_FIELD(checkAsUser);
}

static void
_outAExpr(StringInfo str, A_Expr *node)
{
	WRITE_NODE_TYPE("AEXPR");

	switch (node->kind)
	{
		case AEXPR_OP:
			appendStringInfo(str, " ");
			WRITE_NODE_FIELD(name);
			break;
		case AEXPR_AND:
			appendStringInfo(str, " AND");
			break;
		case AEXPR_OR:
			appendStringInfo(str, " OR");
			break;
		case AEXPR_NOT:
			appendStringInfo(str, " NOT");
			break;
		case AEXPR_OP_ANY:
			appendStringInfo(str, " ");
			WRITE_NODE_FIELD(name);
			appendStringInfo(str, " ANY ");
			break;
		case AEXPR_OP_ALL:
			appendStringInfo(str, " ");
			WRITE_NODE_FIELD(name);
			appendStringInfo(str, " ALL ");
			break;
		case AEXPR_DISTINCT:
			appendStringInfo(str, " DISTINCT ");
			WRITE_NODE_FIELD(name);
			break;
		case AEXPR_NULLIF:
			appendStringInfo(str, " NULLIF ");
			WRITE_NODE_FIELD(name);
			break;
		case AEXPR_OF:
			appendStringInfo(str, " OF ");
			WRITE_NODE_FIELD(name);
			break;
		default:
			appendStringInfo(str, " ??");
			break;
	}

	WRITE_NODE_FIELD(lexpr);
	WRITE_NODE_FIELD(rexpr);
}

static void
_outValue(StringInfo str, Value *value)
{
	switch (value->type)
	{
		case T_Integer:
			appendStringInfo(str, "%ld", value->val.ival);
			break;
		case T_Float:

			/*
			 * We assume the value is a valid numeric literal and so does not
			 * need quoting.
			 */
			appendStringInfoString(str, value->val.str);
			break;
		case T_String:
			appendStringInfoChar(str, '"');
			_outToken(str, value->val.str);
			appendStringInfoChar(str, '"');
			break;
		case T_BitString:
			/* internal representation already has leading 'b' */
			appendStringInfoString(str, value->val.str);
			break;
		default:
			elog(ERROR, "unrecognized node type: %d", (int) value->type);
			break;
	}
}

static void
_outColumnRef(StringInfo str, ColumnRef *node)
{
	WRITE_NODE_TYPE("COLUMNREF");

	WRITE_NODE_FIELD(fields);
}

static void
_outParamRef(StringInfo str, ParamRef *node)
{
	WRITE_NODE_TYPE("PARAMREF");

	WRITE_INT_FIELD(number);
}

static void
_outAConst(StringInfo str, A_Const *node)
{
	WRITE_NODE_TYPE("A_CONST");

	_outValue(str, &(node->val));
	WRITE_NODE_FIELD(typename);
}

static void
_outA_Indices(StringInfo str, A_Indices *node)
{
	WRITE_NODE_TYPE("A_INDICES");

	WRITE_NODE_FIELD(lidx);
	WRITE_NODE_FIELD(uidx);
}

static void
_outA_Indirection(StringInfo str, A_Indirection *node)
{
	WRITE_NODE_TYPE("A_INDIRECTION");

	WRITE_NODE_FIELD(arg);
	WRITE_NODE_FIELD(indirection);
}

static void
_outResTarget(StringInfo str, ResTarget *node)
{
	WRITE_NODE_TYPE("RESTARGET");

	WRITE_STRING_FIELD(name);
	WRITE_NODE_FIELD(indirection);
	WRITE_NODE_FIELD(val);
}

static void
_outConstraint(StringInfo str, Constraint *node)
{
	WRITE_NODE_TYPE("CONSTRAINT");

	WRITE_STRING_FIELD(name);

	appendStringInfo(str, " :contype ");
	switch (node->contype)
	{
		case CONSTR_PRIMARY:
			appendStringInfo(str, "PRIMARY_KEY");
			WRITE_NODE_FIELD(keys);
			WRITE_STRING_FIELD(indexspace);
			break;

		case CONSTR_UNIQUE:
			appendStringInfo(str, "UNIQUE");
			WRITE_NODE_FIELD(keys);
			WRITE_STRING_FIELD(indexspace);
			break;

		case CONSTR_CHECK:
			appendStringInfo(str, "CHECK");
			WRITE_NODE_FIELD(raw_expr);
			WRITE_STRING_FIELD(cooked_expr);
			break;

		case CONSTR_DEFAULT:
			appendStringInfo(str, "DEFAULT");
			WRITE_NODE_FIELD(raw_expr);
			WRITE_STRING_FIELD(cooked_expr);
			break;

		case CONSTR_NOTNULL:
			appendStringInfo(str, "NOT_NULL");
			break;

		default:
			appendStringInfo(str, "<unrecognized_constraint>");
			break;
	}
}

static void
_outFkConstraint(StringInfo str, FkConstraint *node)
{
	WRITE_NODE_TYPE("FKCONSTRAINT");

	WRITE_STRING_FIELD(constr_name);
	WRITE_NODE_FIELD(pktable);
	WRITE_NODE_FIELD(fk_attrs);
	WRITE_NODE_FIELD(pk_attrs);
	WRITE_CHAR_FIELD(fk_matchtype);
	WRITE_CHAR_FIELD(fk_upd_action);
	WRITE_CHAR_FIELD(fk_del_action);
	WRITE_BOOL_FIELD(deferrable);
	WRITE_BOOL_FIELD(initdeferred);
	WRITE_BOOL_FIELD(skip_validation);
}


/*
 * _outNode -
 *	  converts a Node into ascii string and append it to 'str'
 */
static void
_outNode(StringInfo str, void *obj)
{
	if (obj == NULL)
		appendStringInfo(str, "<>");
	else if (IsA(obj, List) ||IsA(obj, IntList) || IsA(obj, OidList))
		_outList(str, obj);
	else if (IsA(obj, Integer) ||
			 IsA(obj, Float) ||
			 IsA(obj, String) ||
			 IsA(obj, BitString))
	{
		/* nodeRead does not want to see { } around these! */
		_outValue(str, obj);
	}
	else
	{
		appendStringInfoChar(str, '{');
		switch (nodeTag(obj))
		{
			case T_Plan:
				_outPlan(str, obj);
				break;
			case T_Result:
				_outResult(str, obj);
				break;
			case T_Append:
				_outAppend(str, obj);
				break;
			case T_BitmapAnd:
				_outBitmapAnd(str, obj);
				break;
			case T_BitmapOr:
				_outBitmapOr(str, obj);
				break;
			case T_Scan:
				_outScan(str, obj);
				break;
			case T_SeqScan:
				_outSeqScan(str, obj);
				break;
			case T_IndexScan:
				_outIndexScan(str, obj);
				break;
			case T_BitmapIndexScan:
				_outBitmapIndexScan(str, obj);
				break;
			case T_BitmapHeapScan:
				_outBitmapHeapScan(str, obj);
				break;
			case T_TidScan:
				_outTidScan(str, obj);
				break;
			case T_SubqueryScan:
				_outSubqueryScan(str, obj);
				break;
			case T_FunctionScan:
				_outFunctionScan(str, obj);
				break;
			case T_Join:
				_outJoin(str, obj);
				break;
			case T_NestLoop:
				_outNestLoop(str, obj);
				break;
			case T_MergeJoin:
				_outMergeJoin(str, obj);
				break;
			case T_HashJoin:
				_outHashJoin(str, obj);
				break;
			case T_Agg:
				_outAgg(str, obj);
				break;
			case T_Group:
				_outGroup(str, obj);
				break;
			case T_Material:
				_outMaterial(str, obj);
				break;
			case T_Sort:
				_outSort(str, obj);
				break;
			case T_Unique:
				_outUnique(str, obj);
				break;
			case T_SetOp:
				_outSetOp(str, obj);
				break;
			case T_Limit:
				_outLimit(str, obj);
				break;
			case T_Hash:
				_outHash(str, obj);
				break;
			case T_Alias:
				_outAlias(str, obj);
				break;
			case T_RangeVar:
				_outRangeVar(str, obj);
				break;
			case T_Var:
				_outVar(str, obj);
				break;
			case T_Const:
				_outConst(str, obj);
				break;
			case T_Param:
				_outParam(str, obj);
				break;
			case T_Aggref:
				_outAggref(str, obj);
				break;
			case T_ArrayRef:
				_outArrayRef(str, obj);
				break;
			case T_FuncExpr:
				_outFuncExpr(str, obj);
				break;
			case T_OpExpr:
				_outOpExpr(str, obj);
				break;
			case T_DistinctExpr:
				_outDistinctExpr(str, obj);
				break;
			case T_ScalarArrayOpExpr:
				_outScalarArrayOpExpr(str, obj);
				break;
			case T_BoolExpr:
				_outBoolExpr(str, obj);
				break;
			case T_SubLink:
				_outSubLink(str, obj);
				break;
			case T_SubPlan:
				_outSubPlan(str, obj);
				break;
			case T_FieldSelect:
				_outFieldSelect(str, obj);
				break;
			case T_FieldStore:
				_outFieldStore(str, obj);
				break;
			case T_RelabelType:
				_outRelabelType(str, obj);
				break;
			case T_ConvertRowtypeExpr:
				_outConvertRowtypeExpr(str, obj);
				break;
			case T_CaseExpr:
				_outCaseExpr(str, obj);
				break;
			case T_CaseWhen:
				_outCaseWhen(str, obj);
				break;
			case T_CaseTestExpr:
				_outCaseTestExpr(str, obj);
				break;
			case T_ArrayExpr:
				_outArrayExpr(str, obj);
				break;
			case T_RowExpr:
				_outRowExpr(str, obj);
				break;
			case T_CoalesceExpr:
				_outCoalesceExpr(str, obj);
				break;
			case T_MinMaxExpr:
				_outMinMaxExpr(str, obj);
				break;
			case T_NullIfExpr:
				_outNullIfExpr(str, obj);
				break;
			case T_NullTest:
				_outNullTest(str, obj);
				break;
			case T_BooleanTest:
				_outBooleanTest(str, obj);
				break;
			case T_CoerceToDomain:
				_outCoerceToDomain(str, obj);
				break;
			case T_CoerceToDomainValue:
				_outCoerceToDomainValue(str, obj);
				break;
			case T_SetToDefault:
				_outSetToDefault(str, obj);
				break;
			case T_TargetEntry:
				_outTargetEntry(str, obj);
				break;
			case T_RangeTblRef:
				_outRangeTblRef(str, obj);
				break;
			case T_JoinExpr:
				_outJoinExpr(str, obj);
				break;
			case T_FromExpr:
				_outFromExpr(str, obj);
				break;

			case T_Path:
				_outPath(str, obj);
				break;
			case T_IndexPath:
				_outIndexPath(str, obj);
				break;
			case T_BitmapHeapPath:
				_outBitmapHeapPath(str, obj);
				break;
			case T_BitmapAndPath:
				_outBitmapAndPath(str, obj);
				break;
			case T_BitmapOrPath:
				_outBitmapOrPath(str, obj);
				break;
			case T_TidPath:
				_outTidPath(str, obj);
				break;
			case T_AppendPath:
				_outAppendPath(str, obj);
				break;
			case T_ResultPath:
				_outResultPath(str, obj);
				break;
			case T_MaterialPath:
				_outMaterialPath(str, obj);
				break;
			case T_UniquePath:
				_outUniquePath(str, obj);
				break;
			case T_NestPath:
				_outNestPath(str, obj);
				break;
			case T_MergePath:
				_outMergePath(str, obj);
				break;
			case T_HashPath:
				_outHashPath(str, obj);
				break;
			case T_PlannerInfo:
				_outPlannerInfo(str, obj);
				break;
			case T_RelOptInfo:
				_outRelOptInfo(str, obj);
				break;
			case T_IndexOptInfo:
				_outIndexOptInfo(str, obj);
				break;
			case T_PathKeyItem:
				_outPathKeyItem(str, obj);
				break;
			case T_RestrictInfo:
				_outRestrictInfo(str, obj);
				break;
			case T_InnerIndexscanInfo:
				_outInnerIndexscanInfo(str, obj);
				break;
			case T_InClauseInfo:
				_outInClauseInfo(str, obj);
				break;

			case T_CreateStmt:
				_outCreateStmt(str, obj);
				break;
			case T_IndexStmt:
				_outIndexStmt(str, obj);
				break;
			case T_NotifyStmt:
				_outNotifyStmt(str, obj);
				break;
			case T_DeclareCursorStmt:
				_outDeclareCursorStmt(str, obj);
				break;
			case T_SelectStmt:
				_outSelectStmt(str, obj);
				break;
			case T_ColumnDef:
				_outColumnDef(str, obj);
				break;
			case T_TypeName:
				_outTypeName(str, obj);
				break;
			case T_TypeCast:
				_outTypeCast(str, obj);
				break;
			case T_IndexElem:
				_outIndexElem(str, obj);
				break;
			case T_Query:
				_outQuery(str, obj);
				break;
			case T_SortClause:
				_outSortClause(str, obj);
				break;
			case T_GroupClause:
				_outGroupClause(str, obj);
				break;
			case T_SetOperationStmt:
				_outSetOperationStmt(str, obj);
				break;
			case T_RangeTblEntry:
				_outRangeTblEntry(str, obj);
				break;
			case T_A_Expr:
				_outAExpr(str, obj);
				break;
			case T_ColumnRef:
				_outColumnRef(str, obj);
				break;
			case T_ParamRef:
				_outParamRef(str, obj);
				break;
			case T_A_Const:
				_outAConst(str, obj);
				break;
			case T_A_Indices:
				_outA_Indices(str, obj);
				break;
			case T_A_Indirection:
				_outA_Indirection(str, obj);
				break;
			case T_ResTarget:
				_outResTarget(str, obj);
				break;
			case T_Constraint:
				_outConstraint(str, obj);
				break;
			case T_FkConstraint:
				_outFkConstraint(str, obj);
				break;
			case T_FuncCall:
				_outFuncCall(str, obj);
				break;
			case T_DefElem:
				_outDefElem(str, obj);
				break;
			case T_LockingClause:
				_outLockingClause(str, obj);
				break;

			default:

				/*
				 * This should be an ERROR, but it's too useful to be able to
				 * dump structures that _outNode only understands part of.
				 */
				elog(WARNING, "could not dump unrecognized node type: %d",
					 (int) nodeTag(obj));
				break;
		}
		appendStringInfoChar(str, '}');
	}
}

/*
 * nodeToString -
 *	   returns the ascii representation of the Node as a palloc'd string
 */
char *
nodeToString(void *obj)
{
	StringInfoData str;

	/* see stringinfo.h for an explanation of this maneuver */
	initStringInfo(&str);
	_outNode(&str, obj);
	return str.data;
}