init

pg_include/nodes/bitmapset.h

@@ -0,0 +1,96 @@
+/*-------------------------------------------------------------------------
+ *
+ * bitmapset.h
+ *	  PostgreSQL generic bitmap set package
+ *
+ * A bitmap set can represent any set of nonnegative integers, although
+ * it is mainly intended for sets where the maximum value is not large,
+ * say at most a few hundred.  By convention, a NULL pointer is always
+ * accepted by all operations to represent the empty set.  (But beware
+ * that this is not the only representation of the empty set.  Use
+ * bms_is_empty() in preference to testing for NULL.)
+ *
+ *
+ * Copyright (c) 2003-2012, PostgreSQL Global Development Group
+ *
+ * src/include/nodes/bitmapset.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef BITMAPSET_H
+#define BITMAPSET_H
+
+/*
+ * Data representation
+ */
+
+/* The unit size can be adjusted by changing these three declarations: */
+#define BITS_PER_BITMAPWORD 32
+typedef uint32 bitmapword;		/* must be an unsigned type */
+typedef int32 signedbitmapword; /* must be the matching signed type */
+
+typedef struct Bitmapset
+{
+	int			nwords;			/* number of words in array */
+	bitmapword	words[1];		/* really [nwords] */
+} Bitmapset;					/* VARIABLE LENGTH STRUCT */
+
+
+/* result of bms_subset_compare */
+typedef enum
+{
+	BMS_EQUAL,					/* sets are equal */
+	BMS_SUBSET1,				/* first set is a subset of the second */
+	BMS_SUBSET2,				/* second set is a subset of the first */
+	BMS_DIFFERENT				/* neither set is a subset of the other */
+} BMS_Comparison;
+
+/* result of bms_membership */
+typedef enum
+{
+	BMS_EMPTY_SET,				/* 0 members */
+	BMS_SINGLETON,				/* 1 member */
+	BMS_MULTIPLE				/* >1 member */
+} BMS_Membership;
+
+
+/*
+ * function prototypes in nodes/bitmapset.c
+ */
+
+extern Bitmapset *bms_copy(const Bitmapset *a);
+extern bool bms_equal(const Bitmapset *a, const Bitmapset *b);
+extern Bitmapset *bms_make_singleton(int x);
+extern void bms_free(Bitmapset *a);
+
+extern Bitmapset *bms_union(const Bitmapset *a, const Bitmapset *b);
+extern Bitmapset *bms_intersect(const Bitmapset *a, const Bitmapset *b);
+extern Bitmapset *bms_difference(const Bitmapset *a, const Bitmapset *b);
+extern bool bms_is_subset(const Bitmapset *a, const Bitmapset *b);
+extern BMS_Comparison bms_subset_compare(const Bitmapset *a, const Bitmapset *b);
+extern bool bms_is_member(int x, const Bitmapset *a);
+extern bool bms_overlap(const Bitmapset *a, const Bitmapset *b);
+extern bool bms_nonempty_difference(const Bitmapset *a, const Bitmapset *b);
+extern int	bms_singleton_member(const Bitmapset *a);
+extern int	bms_num_members(const Bitmapset *a);
+
+/* optimized tests when we don't need to know exact membership count: */
+extern BMS_Membership bms_membership(const Bitmapset *a);
+extern bool bms_is_empty(const Bitmapset *a);
+
+/* these routines recycle (modify or free) their non-const inputs: */
+
+extern Bitmapset *bms_add_member(Bitmapset *a, int x);
+extern Bitmapset *bms_del_member(Bitmapset *a, int x);
+extern Bitmapset *bms_add_members(Bitmapset *a, const Bitmapset *b);
+extern Bitmapset *bms_int_members(Bitmapset *a, const Bitmapset *b);
+extern Bitmapset *bms_del_members(Bitmapset *a, const Bitmapset *b);
+extern Bitmapset *bms_join(Bitmapset *a, Bitmapset *b);
+
+/* support for iterating through the integer elements of a set: */
+extern int	bms_first_member(Bitmapset *a);
+
+/* support for hashtables using Bitmapsets as keys: */
+extern uint32 bms_hash_value(const Bitmapset *a);
+
+#endif   /* BITMAPSET_H */

pg_include/nodes/makefuncs.h

@@ -0,0 +1,82 @@
+/*-------------------------------------------------------------------------
+ *
+ * makefuncs.h
+ *	  prototypes for the creator functions (for primitive nodes)
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/makefuncs.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef MAKEFUNC_H
+#define MAKEFUNC_H
+
+#include "nodes/parsenodes.h"
+
+
+extern A_Expr *makeA_Expr(A_Expr_Kind kind, List *name,
+		   Node *lexpr, Node *rexpr, int location);
+
+extern A_Expr *makeSimpleA_Expr(A_Expr_Kind kind, char *name,
+				 Node *lexpr, Node *rexpr, int location);
+
+extern Var *makeVar(Index varno,
+		AttrNumber varattno,
+		Oid vartype,
+		int32 vartypmod,
+		Oid varcollid,
+		Index varlevelsup);
+
+extern Var *makeVarFromTargetEntry(Index varno,
+					   TargetEntry *tle);
+
+extern Var *makeWholeRowVar(RangeTblEntry *rte,
+				Index varno,
+				Index varlevelsup,
+				bool allowScalar);
+
+extern TargetEntry *makeTargetEntry(Expr *expr,
+				AttrNumber resno,
+				char *resname,
+				bool resjunk);
+
+extern TargetEntry *flatCopyTargetEntry(TargetEntry *src_tle);
+
+extern FromExpr *makeFromExpr(List *fromlist, Node *quals);
+
+extern Const *makeConst(Oid consttype,
+		  int32 consttypmod,
+		  Oid constcollid,
+		  int constlen,
+		  Datum constvalue,
+		  bool constisnull,
+		  bool constbyval);
+
+extern Const *makeNullConst(Oid consttype, int32 consttypmod, Oid constcollid);
+
+extern Node *makeBoolConst(bool value, bool isnull);
+
+extern Expr *makeBoolExpr(BoolExprType boolop, List *args, int location);
+
+extern Alias *makeAlias(const char *aliasname, List *colnames);
+
+extern RelabelType *makeRelabelType(Expr *arg, Oid rtype, int32 rtypmod,
+				Oid rcollid, CoercionForm rformat);
+
+extern RangeVar *makeRangeVar(char *schemaname, char *relname, int location);
+
+extern TypeName *makeTypeName(char *typnam);
+extern TypeName *makeTypeNameFromNameList(List *names);
+extern TypeName *makeTypeNameFromOid(Oid typeOid, int32 typmod);
+
+extern FuncExpr *makeFuncExpr(Oid funcid, Oid rettype, List *args,
+			 Oid funccollid, Oid inputcollid, CoercionForm fformat);
+
+extern DefElem *makeDefElem(char *name, Node *arg);
+extern DefElem *makeDefElemExtended(char *nameSpace, char *name, Node *arg,
+					DefElemAction defaction);
+
+#endif   /* MAKEFUNC_H */

pg_include/nodes/memnodes.h

@@ -0,0 +1,78 @@
+/*-------------------------------------------------------------------------
+ *
+ * memnodes.h
+ *	  POSTGRES memory context node definitions.
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/memnodes.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef MEMNODES_H
+#define MEMNODES_H
+
+#include "nodes/nodes.h"
+
+/*
+ * MemoryContext
+ *		A logical context in which memory allocations occur.
+ *
+ * MemoryContext itself is an abstract type that can have multiple
+ * implementations, though for now we have only AllocSetContext.
+ * The function pointers in MemoryContextMethods define one specific
+ * implementation of MemoryContext --- they are a virtual function table
+ * in C++ terms.
+ *
+ * Node types that are actual implementations of memory contexts must
+ * begin with the same fields as MemoryContext.
+ *
+ * Note: for largely historical reasons, typedef MemoryContext is a pointer
+ * to the context struct rather than the struct type itself.
+ */
+
+typedef struct MemoryContextMethods
+{
+	void	   *(*alloc) (MemoryContext context, Size size);
+	/* call this free_p in case someone #define's free() */
+	void		(*free_p) (MemoryContext context, void *pointer);
+	void	   *(*realloc) (MemoryContext context, void *pointer, Size size);
+	void		(*init) (MemoryContext context);
+	void		(*reset) (MemoryContext context);
+	void		(*delete_context) (MemoryContext context);
+	Size		(*get_chunk_space) (MemoryContext context, void *pointer);
+	bool		(*is_empty) (MemoryContext context);
+	void		(*stats) (MemoryContext context, int level);
+#ifdef MEMORY_CONTEXT_CHECKING
+	void		(*check) (MemoryContext context);
+#endif
+} MemoryContextMethods;
+
+
+typedef struct MemoryContextData
+{
+	NodeTag		type;			/* identifies exact kind of context */
+	MemoryContextMethods *methods;		/* virtual function table */
+	MemoryContext parent;		/* NULL if no parent (toplevel context) */
+	MemoryContext firstchild;	/* head of linked list of children */
+	MemoryContext nextchild;	/* next child of same parent */
+	char	   *name;			/* context name (just for debugging) */
+	bool		isReset;		/* T = no space alloced since last reset */
+} MemoryContextData;
+
+/* utils/palloc.h contains typedef struct MemoryContextData *MemoryContext */
+
+
+/*
+ * MemoryContextIsValid
+ *		True iff memory context is valid.
+ *
+ * Add new context types to the set accepted by this macro.
+ */
+#define MemoryContextIsValid(context) \
+	((context) != NULL && \
+	 (IsA((context), AllocSetContext)))
+
+#endif   /* MEMNODES_H */

pg_include/nodes/nodeFuncs.h

@@ -0,0 +1,65 @@
+/*-------------------------------------------------------------------------
+ *
+ * nodeFuncs.h
+ *		Various general-purpose manipulations of Node trees
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/nodeFuncs.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef NODEFUNCS_H
+#define NODEFUNCS_H
+
+#include "nodes/parsenodes.h"
+
+
+/* flags bits for query_tree_walker and query_tree_mutator */
+#define QTW_IGNORE_RT_SUBQUERIES	0x01		/* subqueries in rtable */
+#define QTW_IGNORE_CTE_SUBQUERIES	0x02		/* subqueries in cteList */
+#define QTW_IGNORE_RC_SUBQUERIES	0x03		/* both of above */
+#define QTW_IGNORE_JOINALIASES		0x04		/* JOIN alias var lists */
+#define QTW_IGNORE_RANGE_TABLE		0x08		/* skip rangetable entirely */
+#define QTW_EXAMINE_RTES			0x10		/* examine RTEs */
+#define QTW_DONT_COPY_QUERY			0x20		/* do not copy top Query */
+
+
+extern Oid	exprType(const Node *expr);
+extern int32 exprTypmod(const Node *expr);
+extern bool exprIsLengthCoercion(const Node *expr, int32 *coercedTypmod);
+extern Node *relabel_to_typmod(Node *expr, int32 typmod);
+extern bool expression_returns_set(Node *clause);
+
+extern Oid	exprCollation(const Node *expr);
+extern Oid	exprInputCollation(const Node *expr);
+extern void exprSetCollation(Node *expr, Oid collation);
+extern void exprSetInputCollation(Node *expr, Oid inputcollation);
+
+extern int	exprLocation(const Node *expr);
+
+extern bool expression_tree_walker(Node *node, bool (*walker) (),
+											   void *context);
+extern Node *expression_tree_mutator(Node *node, Node *(*mutator) (),
+												 void *context);
+
+extern bool query_tree_walker(Query *query, bool (*walker) (),
+										  void *context, int flags);
+extern Query *query_tree_mutator(Query *query, Node *(*mutator) (),
+											 void *context, int flags);
+
+extern bool range_table_walker(List *rtable, bool (*walker) (),
+										   void *context, int flags);
+extern List *range_table_mutator(List *rtable, Node *(*mutator) (),
+											 void *context, int flags);
+
+extern bool query_or_expression_tree_walker(Node *node, bool (*walker) (),
+												   void *context, int flags);
+extern Node *query_or_expression_tree_mutator(Node *node, Node *(*mutator) (),
+												   void *context, int flags);
+
+extern bool raw_expression_tree_walker(Node *node, bool (*walker) (),
+												   void *context);
+
+#endif   /* NODEFUNCS_H */

pg_include/nodes/nodes.h

@@ -0,0 +1,607 @@
+/*-------------------------------------------------------------------------
+ *
+ * nodes.h
+ *	  Definitions for tagged nodes.
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/nodes.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef NODES_H
+#define NODES_H
+
+/*
+ * The first field of every node is NodeTag. Each node created (with makeNode)
+ * will have one of the following tags as the value of its first field.
+ *
+ * Note that the numbers of the node tags are not contiguous. We left holes
+ * here so that we can add more tags without changing the existing enum's.
+ * (Since node tag numbers never exist outside backend memory, there's no
+ * real harm in renumbering, it just costs a full rebuild ...)
+ */
+typedef enum NodeTag
+{
+	T_Invalid = 0,
+
+	/*
+	 * TAGS FOR EXECUTOR NODES (execnodes.h)
+	 */
+	T_IndexInfo = 10,
+	T_ExprContext,
+	T_ProjectionInfo,
+	T_JunkFilter,
+	T_ResultRelInfo,
+	T_EState,
+	T_TupleTableSlot,
+
+	/*
+	 * TAGS FOR PLAN NODES (plannodes.h)
+	 */
+	T_Plan = 100,
+	T_Result,
+	T_ModifyTable,
+	T_Append,
+	T_MergeAppend,
+	T_RecursiveUnion,
+	T_BitmapAnd,
+	T_BitmapOr,
+	T_Scan,
+	T_SeqScan,
+	T_IndexScan,
+	T_IndexOnlyScan,
+	T_BitmapIndexScan,
+	T_BitmapHeapScan,
+	T_TidScan,
+	T_SubqueryScan,
+	T_FunctionScan,
+	T_ValuesScan,
+	T_CteScan,
+	T_WorkTableScan,
+	T_ForeignScan,
+	T_Join,
+	T_NestLoop,
+	T_MergeJoin,
+	T_HashJoin,
+	T_Material,
+	T_Sort,
+	T_Group,
+	T_Agg,
+	T_WindowAgg,
+	T_Unique,
+	T_Hash,
+	T_SetOp,
+	T_LockRows,
+	T_Limit,
+	/* these aren't subclasses of Plan: */
+	T_NestLoopParam,
+	T_PlanRowMark,
+	T_PlanInvalItem,
+
+	/*
+	 * TAGS FOR PLAN STATE NODES (execnodes.h)
+	 *
+	 * These should correspond one-to-one with Plan node types.
+	 */
+	T_PlanState = 200,
+	T_ResultState,
+	T_ModifyTableState,
+	T_AppendState,
+	T_MergeAppendState,
+	T_RecursiveUnionState,
+	T_BitmapAndState,
+	T_BitmapOrState,
+	T_ScanState,
+	T_SeqScanState,
+	T_IndexScanState,
+	T_IndexOnlyScanState,
+	T_BitmapIndexScanState,
+	T_BitmapHeapScanState,
+	T_TidScanState,
+	T_SubqueryScanState,
+	T_FunctionScanState,
+	T_ValuesScanState,
+	T_CteScanState,
+	T_WorkTableScanState,
+	T_ForeignScanState,
+	T_JoinState,
+	T_NestLoopState,
+	T_MergeJoinState,
+	T_HashJoinState,
+	T_MaterialState,
+	T_SortState,
+	T_GroupState,
+	T_AggState,
+	T_WindowAggState,
+	T_UniqueState,
+	T_HashState,
+	T_SetOpState,
+	T_LockRowsState,
+	T_LimitState,
+
+	/*
+	 * TAGS FOR PRIMITIVE NODES (primnodes.h)
+	 */
+	T_Alias = 300,
+	T_RangeVar,
+	T_Expr,
+	T_Var,
+	T_Const,
+	T_Param,
+	T_Aggref,
+	T_WindowFunc,
+	T_ArrayRef,
+	T_FuncExpr,
+	T_NamedArgExpr,
+	T_OpExpr,
+	T_DistinctExpr,
+	T_NullIfExpr,
+	T_ScalarArrayOpExpr,
+	T_BoolExpr,
+	T_SubLink,
+	T_SubPlan,
+	T_AlternativeSubPlan,
+	T_FieldSelect,
+	T_FieldStore,
+	T_RelabelType,
+	T_CoerceViaIO,
+	T_ArrayCoerceExpr,
+	T_ConvertRowtypeExpr,
+	T_CollateExpr,
+	T_CaseExpr,
+	T_CaseWhen,
+	T_CaseTestExpr,
+	T_ArrayExpr,
+	T_RowExpr,
+	T_RowCompareExpr,
+	T_CoalesceExpr,
+	T_MinMaxExpr,
+	T_XmlExpr,
+	T_NullTest,
+	T_BooleanTest,
+	T_CoerceToDomain,
+	T_CoerceToDomainValue,
+	T_SetToDefault,
+	T_CurrentOfExpr,
+	T_TargetEntry,
+	T_RangeTblRef,
+	T_JoinExpr,
+	T_FromExpr,
+	T_IntoClause,
+
+	/*
+	 * TAGS FOR EXPRESSION STATE NODES (execnodes.h)
+	 *
+	 * These correspond (not always one-for-one) to primitive nodes derived
+	 * from Expr.
+	 */
+	T_ExprState = 400,
+	T_GenericExprState,
+	T_AggrefExprState,
+	T_WindowFuncExprState,
+	T_ArrayRefExprState,
+	T_FuncExprState,
+	T_ScalarArrayOpExprState,
+	T_BoolExprState,
+	T_SubPlanState,
+	T_AlternativeSubPlanState,
+	T_FieldSelectState,
+	T_FieldStoreState,
+	T_CoerceViaIOState,
+	T_ArrayCoerceExprState,
+	T_ConvertRowtypeExprState,
+	T_CaseExprState,
+	T_CaseWhenState,
+	T_ArrayExprState,
+	T_RowExprState,
+	T_RowCompareExprState,
+	T_CoalesceExprState,
+	T_MinMaxExprState,
+	T_XmlExprState,
+	T_NullTestState,
+	T_CoerceToDomainState,
+	T_DomainConstraintState,
+	T_WholeRowVarExprState,		/* will be in a more natural position in 9.3 */
+
+	/*
+	 * TAGS FOR PLANNER NODES (relation.h)
+	 */
+	T_PlannerInfo = 500,
+	T_PlannerGlobal,
+	T_RelOptInfo,
+	T_IndexOptInfo,
+	T_ParamPathInfo,
+	T_Path,
+	T_IndexPath,
+	T_BitmapHeapPath,
+	T_BitmapAndPath,
+	T_BitmapOrPath,
+	T_NestPath,
+	T_MergePath,
+	T_HashPath,
+	T_TidPath,
+	T_ForeignPath,
+	T_AppendPath,
+	T_MergeAppendPath,
+	T_ResultPath,
+	T_MaterialPath,
+	T_UniquePath,
+	T_EquivalenceClass,
+	T_EquivalenceMember,
+	T_PathKey,
+	T_RestrictInfo,
+	T_PlaceHolderVar,
+	T_SpecialJoinInfo,
+	T_AppendRelInfo,
+	T_PlaceHolderInfo,
+	T_MinMaxAggInfo,
+	T_PlannerParamItem,
+
+	/*
+	 * TAGS FOR MEMORY NODES (memnodes.h)
+	 */
+	T_MemoryContext = 600,
+	T_AllocSetContext,
+
+	/*
+	 * TAGS FOR VALUE NODES (value.h)
+	 */
+	T_Value = 650,
+	T_Integer,
+	T_Float,
+	T_String,
+	T_BitString,
+	T_Null,
+
+	/*
+	 * TAGS FOR LIST NODES (pg_list.h)
+	 */
+	T_List,
+	T_IntList,
+	T_OidList,
+
+	/*
+	 * TAGS FOR STATEMENT NODES (mostly in parsenodes.h)
+	 */
+	T_Query = 700,
+	T_PlannedStmt,
+	T_InsertStmt,
+	T_DeleteStmt,
+	T_UpdateStmt,
+	T_SelectStmt,
+	T_AlterTableStmt,
+	T_AlterTableCmd,
+	T_AlterDomainStmt,
+	T_SetOperationStmt,
+	T_GrantStmt,
+	T_GrantRoleStmt,
+	T_AlterDefaultPrivilegesStmt,
+	T_ClosePortalStmt,
+	T_ClusterStmt,
+	T_CopyStmt,
+	T_CreateStmt,
+	T_DefineStmt,
+	T_DropStmt,
+	T_TruncateStmt,
+	T_CommentStmt,
+	T_FetchStmt,
+	T_IndexStmt,
+	T_CreateFunctionStmt,
+	T_AlterFunctionStmt,
+	T_DoStmt,
+	T_RenameStmt,
+	T_RuleStmt,
+	T_NotifyStmt,
+	T_ListenStmt,
+	T_UnlistenStmt,
+	T_TransactionStmt,
+	T_ViewStmt,
+	T_LoadStmt,
+	T_CreateDomainStmt,
+	T_CreatedbStmt,
+	T_DropdbStmt,
+	T_VacuumStmt,
+	T_ExplainStmt,
+	T_CreateTableAsStmt,
+	T_CreateSeqStmt,
+	T_AlterSeqStmt,
+	T_VariableSetStmt,
+	T_VariableShowStmt,
+	T_DiscardStmt,
+	T_CreateTrigStmt,
+	T_CreatePLangStmt,
+	T_CreateRoleStmt,
+	T_AlterRoleStmt,
+	T_DropRoleStmt,
+	T_LockStmt,
+	T_ConstraintsSetStmt,
+	T_ReindexStmt,
+	T_CheckPointStmt,
+	T_CreateSchemaStmt,
+	T_AlterDatabaseStmt,
+	T_AlterDatabaseSetStmt,
+	T_AlterRoleSetStmt,
+	T_CreateConversionStmt,
+	T_CreateCastStmt,
+	T_CreateOpClassStmt,
+	T_CreateOpFamilyStmt,
+	T_AlterOpFamilyStmt,
+	T_PrepareStmt,
+	T_ExecuteStmt,
+	T_DeallocateStmt,
+	T_DeclareCursorStmt,
+	T_CreateTableSpaceStmt,
+	T_DropTableSpaceStmt,
+	T_AlterObjectSchemaStmt,
+	T_AlterOwnerStmt,
+	T_DropOwnedStmt,
+	T_ReassignOwnedStmt,
+	T_CompositeTypeStmt,
+	T_CreateEnumStmt,
+	T_CreateRangeStmt,
+	T_AlterEnumStmt,
+	T_AlterTSDictionaryStmt,
+	T_AlterTSConfigurationStmt,
+	T_CreateFdwStmt,
+	T_AlterFdwStmt,
+	T_CreateForeignServerStmt,
+	T_AlterForeignServerStmt,
+	T_CreateUserMappingStmt,
+	T_AlterUserMappingStmt,
+	T_DropUserMappingStmt,
+	T_AlterTableSpaceOptionsStmt,
+	T_SecLabelStmt,
+	T_CreateForeignTableStmt,
+	T_CreateExtensionStmt,
+	T_AlterExtensionStmt,
+	T_AlterExtensionContentsStmt,
+
+	/*
+	 * TAGS FOR PARSE TREE NODES (parsenodes.h)
+	 */
+	T_A_Expr = 900,
+	T_ColumnRef,
+	T_ParamRef,
+	T_A_Const,
+	T_FuncCall,
+	T_A_Star,
+	T_A_Indices,
+	T_A_Indirection,
+	T_A_ArrayExpr,
+	T_ResTarget,
+	T_TypeCast,
+	T_CollateClause,
+	T_SortBy,
+	T_WindowDef,
+	T_RangeSubselect,
+	T_RangeFunction,
+	T_TypeName,
+	T_ColumnDef,
+	T_IndexElem,
+	T_Constraint,
+	T_DefElem,
+	T_RangeTblEntry,
+	T_SortGroupClause,
+	T_WindowClause,
+	T_PrivGrantee,
+	T_FuncWithArgs,
+	T_AccessPriv,
+	T_CreateOpClassItem,
+	T_TableLikeClause,
+	T_FunctionParameter,
+	T_LockingClause,
+	T_RowMarkClause,
+	T_XmlSerialize,
+	T_WithClause,
+	T_CommonTableExpr,
+
+	/*
+	 * TAGS FOR REPLICATION GRAMMAR PARSE NODES (replnodes.h)
+	 */
+	T_IdentifySystemCmd,
+	T_BaseBackupCmd,
+	T_StartReplicationCmd,
+
+	/*
+	 * TAGS FOR RANDOM OTHER STUFF
+	 *
+	 * These are objects that aren't part of parse/plan/execute node tree
+	 * structures, but we give them NodeTags anyway for identification
+	 * purposes (usually because they are involved in APIs where we want to
+	 * pass multiple object types through the same pointer).
+	 */
+	T_TriggerData = 950,		/* in commands/trigger.h */
+	T_ReturnSetInfo,			/* in nodes/execnodes.h */
+	T_WindowObjectData,			/* private in nodeWindowAgg.c */
+	T_TIDBitmap,				/* in nodes/tidbitmap.h */
+	T_InlineCodeBlock,			/* in nodes/parsenodes.h */
+	T_FdwRoutine				/* in foreign/fdwapi.h */
+} NodeTag;
+
+/*
+ * The first field of a node of any type is guaranteed to be the NodeTag.
+ * Hence the type of any node can be gotten by casting it to Node. Declaring
+ * a variable to be of Node * (instead of void *) can also facilitate
+ * debugging.
+ */
+typedef struct Node
+{
+	NodeTag		type;
+} Node;
+
+#define nodeTag(nodeptr)		(((const Node*)(nodeptr))->type)
+
+/*
+ * newNode -
+ *	  create a new node of the specified size and tag the node with the
+ *	  specified tag.
+ *
+ * !WARNING!: Avoid using newNode directly. You should be using the
+ *	  macro makeNode.  eg. to create a Query node, use makeNode(Query)
+ *
+ * Note: the size argument should always be a compile-time constant, so the
+ * apparent risk of multiple evaluation doesn't matter in practice.
+ */
+#ifdef __GNUC__
+
+/* With GCC, we can use a compound statement within an expression */
+#define newNode(size, tag) \
+({	Node   *_result; \
+	AssertMacro((size) >= sizeof(Node));		/* need the tag, at least */ \
+	_result = (Node *) palloc0fast(size); \
+	_result->type = (tag); \
+	_result; \
+})
+#else
+
+/*
+ *	There is no way to dereference the palloc'ed pointer to assign the
+ *	tag, and also return the pointer itself, so we need a holder variable.
+ *	Fortunately, this macro isn't recursive so we just define
+ *	a global variable for this purpose.
+ */
+extern PGDLLIMPORT Node *newNodeMacroHolder;
+
+#define newNode(size, tag) \
+( \
+	AssertMacro((size) >= sizeof(Node)),		/* need the tag, at least */ \
+	newNodeMacroHolder = (Node *) palloc0fast(size), \
+	newNodeMacroHolder->type = (tag), \
+	newNodeMacroHolder \
+)
+#endif   /* __GNUC__ */
+
+
+#define makeNode(_type_)		((_type_ *) newNode(sizeof(_type_),T_##_type_))
+#define NodeSetTag(nodeptr,t)	(((Node*)(nodeptr))->type = (t))
+
+#define IsA(nodeptr,_type_)		(nodeTag(nodeptr) == T_##_type_)
+
+/* ----------------------------------------------------------------
+ *					  extern declarations follow
+ * ----------------------------------------------------------------
+ */
+
+/*
+ * nodes/{outfuncs.c,print.c}
+ */
+extern char *nodeToString(const void *obj);
+
+/*
+ * nodes/{readfuncs.c,read.c}
+ */
+extern void *stringToNode(char *str);
+
+/*
+ * nodes/copyfuncs.c
+ */
+extern void *copyObject(const void *obj);
+
+/*
+ * nodes/equalfuncs.c
+ */
+extern bool equal(const void *a, const void *b);
+
+
+/*
+ * Typedefs for identifying qualifier selectivities and plan costs as such.
+ * These are just plain "double"s, but declaring a variable as Selectivity
+ * or Cost makes the intent more obvious.
+ *
+ * These could have gone into plannodes.h or some such, but many files
+ * depend on them...
+ */
+typedef double Selectivity;		/* fraction of tuples a qualifier will pass */
+typedef double Cost;			/* execution cost (in page-access units) */
+
+
+/*
+ * CmdType -
+ *	  enums for type of operation represented by a Query or PlannedStmt
+ *
+ * This is needed in both parsenodes.h and plannodes.h, so put it here...
+ */
+typedef enum CmdType
+{
+	CMD_UNKNOWN,
+	CMD_SELECT,					/* select stmt */
+	CMD_UPDATE,					/* update stmt */
+	CMD_INSERT,					/* insert stmt */
+	CMD_DELETE,
+	CMD_UTILITY,				/* cmds like create, destroy, copy, vacuum,
+								 * etc. */
+	CMD_NOTHING					/* dummy command for instead nothing rules
+								 * with qual */
+} CmdType;
+
+
+/*
+ * JoinType -
+ *	  enums for types of relation joins
+ *
+ * JoinType determines the exact semantics of joining two relations using
+ * a matching qualification.  For example, it tells what to do with a tuple
+ * that has no match in the other relation.
+ *
+ * This is needed in both parsenodes.h and plannodes.h, so put it here...
+ */
+typedef enum JoinType
+{
+	/*
+	 * The canonical kinds of joins according to the SQL JOIN syntax. Only
+	 * these codes can appear in parser output (e.g., JoinExpr nodes).
+	 */
+	JOIN_INNER,					/* matching tuple pairs only */
+	JOIN_LEFT,					/* pairs + unmatched LHS tuples */
+	JOIN_FULL,					/* pairs + unmatched LHS + unmatched RHS */
+	JOIN_RIGHT,					/* pairs + unmatched RHS tuples */
+
+	/*
+	 * Semijoins and anti-semijoins (as defined in relational theory) do not
+	 * appear in the SQL JOIN syntax, but there are standard idioms for
+	 * representing them (e.g., using EXISTS).	The planner recognizes these
+	 * cases and converts them to joins.  So the planner and executor must
+	 * support these codes.  NOTE: in JOIN_SEMI output, it is unspecified
+	 * which matching RHS row is joined to.  In JOIN_ANTI output, the row is
+	 * guaranteed to be null-extended.
+	 */
+	JOIN_SEMI,					/* 1 copy of each LHS row that has match(es) */
+	JOIN_ANTI,					/* 1 copy of each LHS row that has no match */
+
+	/*
+	 * These codes are used internally in the planner, but are not supported
+	 * by the executor (nor, indeed, by most of the planner).
+	 */
+	JOIN_UNIQUE_OUTER,			/* LHS path must be made unique */
+	JOIN_UNIQUE_INNER			/* RHS path must be made unique */
+
+	/*
+	 * We might need additional join types someday.
+	 */
+} JoinType;
+
+/*
+ * OUTER joins are those for which pushed-down quals must behave differently
+ * from the join's own quals.  This is in fact everything except INNER and
+ * SEMI joins.	However, this macro must also exclude the JOIN_UNIQUE symbols
+ * since those are temporary proxies for what will eventually be an INNER
+ * join.
+ *
+ * Note: semijoins are a hybrid case, but we choose to treat them as not
+ * being outer joins.  This is okay principally because the SQL syntax makes
+ * it impossible to have a pushed-down qual that refers to the inner relation
+ * of a semijoin; so there is no strong need to distinguish join quals from
+ * pushed-down quals.  This is convenient because for almost all purposes,
+ * quals attached to a semijoin can be treated the same as innerjoin quals.
+ */
+#define IS_OUTER_JOIN(jointype) \
+	(((1 << (jointype)) & \
+	  ((1 << JOIN_LEFT) | \
+	   (1 << JOIN_FULL) | \
+	   (1 << JOIN_RIGHT) | \
+	   (1 << JOIN_ANTI))) != 0)
+
+#endif   /* NODES_H */

pg_include/nodes/params.h

@@ -0,0 +1,106 @@
+/*-------------------------------------------------------------------------
+ *
+ * params.h
+ *	  Support for finding the values associated with Param nodes.
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/params.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARAMS_H
+#define PARAMS_H
+
+/* To avoid including a pile of parser headers, reference ParseState thus: */
+struct ParseState;
+
+
+/* ----------------
+ *	  ParamListInfo
+ *
+ *	  ParamListInfo arrays are used to pass parameters into the executor
+ *	  for parameterized plans.	Each entry in the array defines the value
+ *	  to be substituted for a PARAM_EXTERN parameter.  The "paramid"
+ *	  of a PARAM_EXTERN Param can range from 1 to numParams.
+ *
+ *	  Although parameter numbers are normally consecutive, we allow
+ *	  ptype == InvalidOid to signal an unused array entry.
+ *
+ *	  pflags is a flags field.	Currently the only used bit is:
+ *	  PARAM_FLAG_CONST signals the planner that it may treat this parameter
+ *	  as a constant (i.e., generate a plan that works only for this value
+ *	  of the parameter).
+ *
+ *	  There are two hook functions that can be associated with a ParamListInfo
+ *	  array to support dynamic parameter handling.	First, if paramFetch
+ *	  isn't null and the executor requires a value for an invalid parameter
+ *	  (one with ptype == InvalidOid), the paramFetch hook is called to give
+ *	  it a chance to fill in the parameter value.  Second, a parserSetup
+ *	  hook can be supplied to re-instantiate the original parsing hooks if
+ *	  a query needs to be re-parsed/planned (as a substitute for supposing
+ *	  that the current ptype values represent a fixed set of parameter types).
+
+ *	  Although the data structure is really an array, not a list, we keep
+ *	  the old typedef name to avoid unnecessary code changes.
+ * ----------------
+ */
+
+#define PARAM_FLAG_CONST	0x0001		/* parameter is constant */
+
+typedef struct ParamExternData
+{
+	Datum		value;			/* parameter value */
+	bool		isnull;			/* is it NULL? */
+	uint16		pflags;			/* flag bits, see above */
+	Oid			ptype;			/* parameter's datatype, or 0 */
+} ParamExternData;
+
+typedef struct ParamListInfoData *ParamListInfo;
+
+typedef void (*ParamFetchHook) (ParamListInfo params, int paramid);
+
+typedef void (*ParserSetupHook) (struct ParseState *pstate, void *arg);
+
+typedef struct ParamListInfoData
+{
+	ParamFetchHook paramFetch;	/* parameter fetch hook */
+	void	   *paramFetchArg;
+	ParserSetupHook parserSetup;	/* parser setup hook */
+	void	   *parserSetupArg;
+	int			numParams;		/* number of ParamExternDatas following */
+	ParamExternData params[1];	/* VARIABLE LENGTH ARRAY */
+}	ParamListInfoData;
+
+
+/* ----------------
+ *	  ParamExecData
+ *
+ *	  ParamExecData entries are used for executor internal parameters
+ *	  (that is, values being passed into or out of a sub-query).  The
+ *	  paramid of a PARAM_EXEC Param is a (zero-based) index into an
+ *	  array of ParamExecData records, which is referenced through
+ *	  es_param_exec_vals or ecxt_param_exec_vals.
+ *
+ *	  If execPlan is not NULL, it points to a SubPlanState node that needs
+ *	  to be executed to produce the value.	(This is done so that we can have
+ *	  lazy evaluation of InitPlans: they aren't executed until/unless a
+ *	  result value is needed.)	Otherwise the value is assumed to be valid
+ *	  when needed.
+ * ----------------
+ */
+
+typedef struct ParamExecData
+{
+	void	   *execPlan;		/* should be "SubPlanState *" */
+	Datum		value;
+	bool		isnull;
+} ParamExecData;
+
+
+/* Functions found in src/backend/nodes/params.c */
+extern ParamListInfo copyParamList(ParamListInfo from);
+
+#endif   /* PARAMS_H */

pg_include/nodes/pg_list.h

@@ -0,0 +1,324 @@
+/*-------------------------------------------------------------------------
+ *
+ * pg_list.h
+ *	  interface for PostgreSQL generic linked list package
+ *
+ * This package implements singly-linked homogeneous lists.
+ *
+ * It is important to have constant-time length, append, and prepend
+ * operations. To achieve this, we deal with two distinct data
+ * structures:
+ *
+ *		1. A set of "list cells": each cell contains a data field and
+ *		   a link to the next cell in the list or NULL.
+ *		2. A single structure containing metadata about the list: the
+ *		   type of the list, pointers to the head and tail cells, and
+ *		   the length of the list.
+ *
+ * We support three types of lists:
+ *
+ *	T_List: lists of pointers
+ *		(in practice usually pointers to Nodes, but not always;
+ *		declared as "void *" to minimize casting annoyances)
+ *	T_IntList: lists of integers
+ *	T_OidList: lists of Oids
+ *
+ * (At the moment, ints and Oids are the same size, but they may not
+ * always be so; try to be careful to maintain the distinction.)
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/pg_list.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_LIST_H
+#define PG_LIST_H
+
+#include "nodes/nodes.h"
+
+
+typedef struct ListCell ListCell;
+
+typedef struct List
+{
+	NodeTag		type;			/* T_List, T_IntList, or T_OidList */
+	int			length;
+	ListCell   *head;
+	ListCell   *tail;
+} List;
+
+struct ListCell
+{
+	union
+	{
+		void	   *ptr_value;
+		int			int_value;
+		Oid			oid_value;
+	}			data;
+	ListCell   *next;
+};
+
+/*
+ * The *only* valid representation of an empty list is NIL; in other
+ * words, a non-NIL list is guaranteed to have length >= 1 and
+ * head/tail != NULL
+ */
+#define NIL						((List *) NULL)
+
+/*
+ * These routines are used frequently. However, we can't implement
+ * them as macros, since we want to avoid double-evaluation of macro
+ * arguments. Therefore, we implement them using static inline functions
+ * if supported by the compiler, or as regular functions otherwise.
+ */
+#ifdef USE_INLINE
+
+static inline ListCell *
+list_head(const List *l)
+{
+	return l ? l->head : NULL;
+}
+
+static inline ListCell *
+list_tail(List *l)
+{
+	return l ? l->tail : NULL;
+}
+
+static inline int
+list_length(const List *l)
+{
+	return l ? l->length : 0;
+}
+#else
+
+extern ListCell *list_head(const List *l);
+extern ListCell *list_tail(List *l);
+extern int	list_length(const List *l);
+#endif   /* USE_INLINE */
+
+/*
+ * NB: There is an unfortunate legacy from a previous incarnation of
+ * the List API: the macro lfirst() was used to mean "the data in this
+ * cons cell". To avoid changing every usage of lfirst(), that meaning
+ * has been kept. As a result, lfirst() takes a ListCell and returns
+ * the data it contains; to get the data in the first cell of a
+ * List, use linitial(). Worse, lsecond() is more closely related to
+ * linitial() than lfirst(): given a List, lsecond() returns the data
+ * in the second cons cell.
+ */
+
+#define lnext(lc)				((lc)->next)
+#define lfirst(lc)				((lc)->data.ptr_value)
+#define lfirst_int(lc)			((lc)->data.int_value)
+#define lfirst_oid(lc)			((lc)->data.oid_value)
+
+#define linitial(l)				lfirst(list_head(l))
+#define linitial_int(l)			lfirst_int(list_head(l))
+#define linitial_oid(l)			lfirst_oid(list_head(l))
+
+#define lsecond(l)				lfirst(lnext(list_head(l)))
+#define lsecond_int(l)			lfirst_int(lnext(list_head(l)))
+#define lsecond_oid(l)			lfirst_oid(lnext(list_head(l)))
+
+#define lthird(l)				lfirst(lnext(lnext(list_head(l))))
+#define lthird_int(l)			lfirst_int(lnext(lnext(list_head(l))))
+#define lthird_oid(l)			lfirst_oid(lnext(lnext(list_head(l))))
+
+#define lfourth(l)				lfirst(lnext(lnext(lnext(list_head(l)))))
+#define lfourth_int(l)			lfirst_int(lnext(lnext(lnext(list_head(l)))))
+#define lfourth_oid(l)			lfirst_oid(lnext(lnext(lnext(list_head(l)))))
+
+#define llast(l)				lfirst(list_tail(l))
+#define llast_int(l)			lfirst_int(list_tail(l))
+#define llast_oid(l)			lfirst_oid(list_tail(l))
+
+/*
+ * Convenience macros for building fixed-length lists
+ */
+#define list_make1(x1)				lcons(x1, NIL)
+#define list_make2(x1,x2)			lcons(x1, list_make1(x2))
+#define list_make3(x1,x2,x3)		lcons(x1, list_make2(x2, x3))
+#define list_make4(x1,x2,x3,x4)		lcons(x1, list_make3(x2, x3, x4))
+
+#define list_make1_int(x1)			lcons_int(x1, NIL)
+#define list_make2_int(x1,x2)		lcons_int(x1, list_make1_int(x2))
+#define list_make3_int(x1,x2,x3)	lcons_int(x1, list_make2_int(x2, x3))
+#define list_make4_int(x1,x2,x3,x4) lcons_int(x1, list_make3_int(x2, x3, x4))
+
+#define list_make1_oid(x1)			lcons_oid(x1, NIL)
+#define list_make2_oid(x1,x2)		lcons_oid(x1, list_make1_oid(x2))
+#define list_make3_oid(x1,x2,x3)	lcons_oid(x1, list_make2_oid(x2, x3))
+#define list_make4_oid(x1,x2,x3,x4) lcons_oid(x1, list_make3_oid(x2, x3, x4))
+
+/*
+ * foreach -
+ *	  a convenience macro which loops through the list
+ */
+#define foreach(cell, l)	\
+	for ((cell) = list_head(l); (cell) != NULL; (cell) = lnext(cell))
+
+/*
+ * for_each_cell -
+ *	  a convenience macro which loops through a list starting from a
+ *	  specified cell
+ */
+#define for_each_cell(cell, initcell)	\
+	for ((cell) = (initcell); (cell) != NULL; (cell) = lnext(cell))
+
+/*
+ * forboth -
+ *	  a convenience macro for advancing through two linked lists
+ *	  simultaneously. This macro loops through both lists at the same
+ *	  time, stopping when either list runs out of elements. Depending
+ *	  on the requirements of the call site, it may also be wise to
+ *	  assert that the lengths of the two lists are equal.
+ */
+#define forboth(cell1, list1, cell2, list2)							\
+	for ((cell1) = list_head(list1), (cell2) = list_head(list2);	\
+		 (cell1) != NULL && (cell2) != NULL;						\
+		 (cell1) = lnext(cell1), (cell2) = lnext(cell2))
+
+/*
+ * forthree -
+ *	  the same for three lists
+ */
+#define forthree(cell1, list1, cell2, list2, cell3, list3)			\
+	for ((cell1) = list_head(list1), (cell2) = list_head(list2), (cell3) = list_head(list3); \
+		 (cell1) != NULL && (cell2) != NULL && (cell3) != NULL;		\
+		 (cell1) = lnext(cell1), (cell2) = lnext(cell2), (cell3) = lnext(cell3))
+
+extern List *lappend(List *list, void *datum);
+extern List *lappend_int(List *list, int datum);
+extern List *lappend_oid(List *list, Oid datum);
+
+extern ListCell *lappend_cell(List *list, ListCell *prev, void *datum);
+extern ListCell *lappend_cell_int(List *list, ListCell *prev, int datum);
+extern ListCell *lappend_cell_oid(List *list, ListCell *prev, Oid datum);
+
+extern List *lcons(void *datum, List *list);
+extern List *lcons_int(int datum, List *list);
+extern List *lcons_oid(Oid datum, List *list);
+
+extern List *list_concat(List *list1, List *list2);
+extern List *list_truncate(List *list, int new_size);
+
+extern void *list_nth(const List *list, int n);
+extern int	list_nth_int(const List *list, int n);
+extern Oid	list_nth_oid(const List *list, int n);
+
+extern bool list_member(const List *list, const void *datum);
+extern bool list_member_ptr(const List *list, const void *datum);
+extern bool list_member_int(const List *list, int datum);
+extern bool list_member_oid(const List *list, Oid datum);
+
+extern List *list_delete(List *list, void *datum);
+extern List *list_delete_ptr(List *list, void *datum);
+extern List *list_delete_int(List *list, int datum);
+extern List *list_delete_oid(List *list, Oid datum);
+extern List *list_delete_first(List *list);
+extern List *list_delete_cell(List *list, ListCell *cell, ListCell *prev);
+
+extern List *list_union(const List *list1, const List *list2);
+extern List *list_union_ptr(const List *list1, const List *list2);
+extern List *list_union_int(const List *list1, const List *list2);
+extern List *list_union_oid(const List *list1, const List *list2);
+
+extern List *list_intersection(const List *list1, const List *list2);
+
+/* currently, there's no need for list_intersection_int etc */
+
+extern List *list_difference(const List *list1, const List *list2);
+extern List *list_difference_ptr(const List *list1, const List *list2);
+extern List *list_difference_int(const List *list1, const List *list2);
+extern List *list_difference_oid(const List *list1, const List *list2);
+
+extern List *list_append_unique(List *list, void *datum);
+extern List *list_append_unique_ptr(List *list, void *datum);
+extern List *list_append_unique_int(List *list, int datum);
+extern List *list_append_unique_oid(List *list, Oid datum);
+
+extern List *list_concat_unique(List *list1, List *list2);
+extern List *list_concat_unique_ptr(List *list1, List *list2);
+extern List *list_concat_unique_int(List *list1, List *list2);
+extern List *list_concat_unique_oid(List *list1, List *list2);
+
+extern void list_free(List *list);
+extern void list_free_deep(List *list);
+
+extern List *list_copy(const List *list);
+extern List *list_copy_tail(const List *list, int nskip);
+
+/*
+ * To ease migration to the new list API, a set of compatibility
+ * macros are provided that reduce the impact of the list API changes
+ * as far as possible. Until client code has been rewritten to use the
+ * new list API, the ENABLE_LIST_COMPAT symbol can be defined before
+ * including pg_list.h
+ */
+#ifdef ENABLE_LIST_COMPAT
+
+#define lfirsti(lc)					lfirst_int(lc)
+#define lfirsto(lc)					lfirst_oid(lc)
+
+#define makeList1(x1)				list_make1(x1)
+#define makeList2(x1, x2)			list_make2(x1, x2)
+#define makeList3(x1, x2, x3)		list_make3(x1, x2, x3)
+#define makeList4(x1, x2, x3, x4)	list_make4(x1, x2, x3, x4)
+
+#define makeListi1(x1)				list_make1_int(x1)
+#define makeListi2(x1, x2)			list_make2_int(x1, x2)
+
+#define makeListo1(x1)				list_make1_oid(x1)
+#define makeListo2(x1, x2)			list_make2_oid(x1, x2)
+
+#define lconsi(datum, list)			lcons_int(datum, list)
+#define lconso(datum, list)			lcons_oid(datum, list)
+
+#define lappendi(list, datum)		lappend_int(list, datum)
+#define lappendo(list, datum)		lappend_oid(list, datum)
+
+#define nconc(l1, l2)				list_concat(l1, l2)
+
+#define nth(n, list)				list_nth(list, n)
+
+#define member(datum, list)			list_member(list, datum)
+#define ptrMember(datum, list)		list_member_ptr(list, datum)
+#define intMember(datum, list)		list_member_int(list, datum)
+#define oidMember(datum, list)		list_member_oid(list, datum)
+
+/*
+ * Note that the old lremove() determined equality via pointer
+ * comparison, whereas the new list_delete() uses equal(); in order to
+ * keep the same behavior, we therefore need to map lremove() calls to
+ * list_delete_ptr() rather than list_delete()
+ */
+#define lremove(elem, list)			list_delete_ptr(list, elem)
+#define LispRemove(elem, list)		list_delete(list, elem)
+#define lremovei(elem, list)		list_delete_int(list, elem)
+#define lremoveo(elem, list)		list_delete_oid(list, elem)
+
+#define ltruncate(n, list)			list_truncate(list, n)
+
+#define set_union(l1, l2)			list_union(l1, l2)
+#define set_uniono(l1, l2)			list_union_oid(l1, l2)
+#define set_ptrUnion(l1, l2)		list_union_ptr(l1, l2)
+
+#define set_difference(l1, l2)		list_difference(l1, l2)
+#define set_differenceo(l1, l2)		list_difference_oid(l1, l2)
+#define set_ptrDifference(l1, l2)	list_difference_ptr(l1, l2)
+
+#define equali(l1, l2)				equal(l1, l2)
+#define equalo(l1, l2)				equal(l1, l2)
+
+#define freeList(list)				list_free(list)
+
+#define listCopy(list)				list_copy(list)
+
+extern int	length(List *list);
+#endif   /* ENABLE_LIST_COMPAT */
+
+#endif   /* PG_LIST_H */

pg_include/nodes/plannodes.h

@@ -0,0 +1,835 @@
+/*-------------------------------------------------------------------------
+ *
+ * plannodes.h
+ *	  definitions for query plan nodes
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/plannodes.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PLANNODES_H
+#define PLANNODES_H
+
+#include "access/sdir.h"
+#include "nodes/bitmapset.h"
+#include "nodes/primnodes.h"
+
+
+/* ----------------------------------------------------------------
+ *						node definitions
+ * ----------------------------------------------------------------
+ */
+
+/* ----------------
+ *		PlannedStmt node
+ *
+ * The output of the planner is a Plan tree headed by a PlannedStmt node.
+ * PlannedStmt holds the "one time" information needed by the executor.
+ * ----------------
+ */
+typedef struct PlannedStmt
+{
+	NodeTag		type;
+
+	CmdType		commandType;	/* select|insert|update|delete */
+
+	uint32		queryId;		/* query identifier (copied from Query) */
+
+	bool		hasReturning;	/* is it insert|update|delete RETURNING? */
+
+	bool		hasModifyingCTE;	/* has insert|update|delete in WITH? */
+
+	bool		canSetTag;		/* do I set the command result tag? */
+
+	bool		transientPlan;	/* redo plan when TransactionXmin changes? */
+
+	struct Plan *planTree;		/* tree of Plan nodes */
+
+	List	   *rtable;			/* list of RangeTblEntry nodes */
+
+	/* rtable indexes of target relations for INSERT/UPDATE/DELETE */
+	List	   *resultRelations;	/* integer list of RT indexes, or NIL */
+
+	Node	   *utilityStmt;	/* non-null if this is DECLARE CURSOR */
+
+	List	   *subplans;		/* Plan trees for SubPlan expressions */
+
+	Bitmapset  *rewindPlanIDs;	/* indices of subplans that require REWIND */
+
+	List	   *rowMarks;		/* a list of PlanRowMark's */
+
+	List	   *relationOids;	/* OIDs of relations the plan depends on */
+
+	List	   *invalItems;		/* other dependencies, as PlanInvalItems */
+
+	int			nParamExec;		/* number of PARAM_EXEC Params used */
+} PlannedStmt;
+
+/* macro for fetching the Plan associated with a SubPlan node */
+#define exec_subplan_get_plan(plannedstmt, subplan) \
+	((Plan *) list_nth((plannedstmt)->subplans, (subplan)->plan_id - 1))
+
+
+/* ----------------
+ *		Plan node
+ *
+ * All plan nodes "derive" from the Plan structure by having the
+ * Plan structure as the first field.  This ensures that everything works
+ * when nodes are cast to Plan's.  (node pointers are frequently cast to Plan*
+ * when passed around generically in the executor)
+ *
+ * We never actually instantiate any Plan nodes; this is just the common
+ * abstract superclass for all Plan-type nodes.
+ * ----------------
+ */
+typedef struct Plan
+{
+	NodeTag		type;
+
+	/*
+	 * estimated execution costs for plan (see costsize.c for more info)
+	 */
+	Cost		startup_cost;	/* cost expended before fetching any tuples */
+	Cost		total_cost;		/* total cost (assuming all tuples fetched) */
+
+	/*
+	 * planner's estimate of result size of this plan step
+	 */
+	double		plan_rows;		/* number of rows plan is expected to emit */
+	int			plan_width;		/* average row width in bytes */
+
+	/*
+	 * Common structural data for all Plan types.
+	 */
+	List	   *targetlist;		/* target list to be computed at this node */
+	List	   *qual;			/* implicitly-ANDed qual conditions */
+	struct Plan *lefttree;		/* input plan tree(s) */
+	struct Plan *righttree;
+	List	   *initPlan;		/* Init Plan nodes (un-correlated expr
+								 * subselects) */
+
+	/*
+	 * Information for management of parameter-change-driven rescanning
+	 *
+	 * extParam includes the paramIDs of all external PARAM_EXEC params
+	 * affecting this plan node or its children.  setParam params from the
+	 * node's initPlans are not included, but their extParams are.
+	 *
+	 * allParam includes all the extParam paramIDs, plus the IDs of local
+	 * params that affect the node (i.e., the setParams of its initplans).
+	 * These are _all_ the PARAM_EXEC params that affect this node.
+	 */
+	Bitmapset  *extParam;
+	Bitmapset  *allParam;
+} Plan;
+
+/* ----------------
+ *	these are defined to avoid confusion problems with "left"
+ *	and "right" and "inner" and "outer".  The convention is that
+ *	the "left" plan is the "outer" plan and the "right" plan is
+ *	the inner plan, but these make the code more readable.
+ * ----------------
+ */
+#define innerPlan(node)			(((Plan *)(node))->righttree)
+#define outerPlan(node)			(((Plan *)(node))->lefttree)
+
+
+/* ----------------
+ *	 Result node -
+ *		If no outer plan, evaluate a variable-free targetlist.
+ *		If outer plan, return tuples from outer plan (after a level of
+ *		projection as shown by targetlist).
+ *
+ * If resconstantqual isn't NULL, it represents a one-time qualification
+ * test (i.e., one that doesn't depend on any variables from the outer plan,
+ * so needs to be evaluated only once).
+ * ----------------
+ */
+typedef struct Result
+{
+	Plan		plan;
+	Node	   *resconstantqual;
+} Result;
+
+/* ----------------
+ *	 ModifyTable node -
+ *		Apply rows produced by subplan(s) to result table(s),
+ *		by inserting, updating, or deleting.
+ *
+ * Note that rowMarks and epqParam are presumed to be valid for all the
+ * subplan(s); they can't contain any info that varies across subplans.
+ * ----------------
+ */
+typedef struct ModifyTable
+{
+	Plan		plan;
+	CmdType		operation;		/* INSERT, UPDATE, or DELETE */
+	bool		canSetTag;		/* do we set the command tag/es_processed? */
+	List	   *resultRelations;	/* integer list of RT indexes */
+	int			resultRelIndex; /* index of first resultRel in plan's list */
+	List	   *plans;			/* plan(s) producing source data */
+	List	   *returningLists; /* per-target-table RETURNING tlists */
+	List	   *rowMarks;		/* PlanRowMarks (non-locking only) */
+	int			epqParam;		/* ID of Param for EvalPlanQual re-eval */
+} ModifyTable;
+
+/* ----------------
+ *	 Append node -
+ *		Generate the concatenation of the results of sub-plans.
+ * ----------------
+ */
+typedef struct Append
+{
+	Plan		plan;
+	List	   *appendplans;
+} Append;
+
+/* ----------------
+ *	 MergeAppend node -
+ *		Merge the results of pre-sorted sub-plans to preserve the ordering.
+ * ----------------
+ */
+typedef struct MergeAppend
+{
+	Plan		plan;
+	List	   *mergeplans;
+	/* remaining fields are just like the sort-key info in struct Sort */
+	int			numCols;		/* number of sort-key columns */
+	AttrNumber *sortColIdx;		/* their indexes in the target list */
+	Oid		   *sortOperators;	/* OIDs of operators to sort them by */
+	Oid		   *collations;		/* OIDs of collations */
+	bool	   *nullsFirst;		/* NULLS FIRST/LAST directions */
+} MergeAppend;
+
+/* ----------------
+ *	RecursiveUnion node -
+ *		Generate a recursive union of two subplans.
+ *
+ * The "outer" subplan is always the non-recursive term, and the "inner"
+ * subplan is the recursive term.
+ * ----------------
+ */
+typedef struct RecursiveUnion
+{
+	Plan		plan;
+	int			wtParam;		/* ID of Param representing work table */
+	/* Remaining fields are zero/null in UNION ALL case */
+	int			numCols;		/* number of columns to check for
+								 * duplicate-ness */
+	AttrNumber *dupColIdx;		/* their indexes in the target list */
+	Oid		   *dupOperators;	/* equality operators to compare with */
+	long		numGroups;		/* estimated number of groups in input */
+} RecursiveUnion;
+
+/* ----------------
+ *	 BitmapAnd node -
+ *		Generate the intersection of the results of sub-plans.
+ *
+ * The subplans must be of types that yield tuple bitmaps.	The targetlist
+ * and qual fields of the plan are unused and are always NIL.
+ * ----------------
+ */
+typedef struct BitmapAnd
+{
+	Plan		plan;
+	List	   *bitmapplans;
+} BitmapAnd;
+
+/* ----------------
+ *	 BitmapOr node -
+ *		Generate the union of the results of sub-plans.
+ *
+ * The subplans must be of types that yield tuple bitmaps.	The targetlist
+ * and qual fields of the plan are unused and are always NIL.
+ * ----------------
+ */
+typedef struct BitmapOr
+{
+	Plan		plan;
+	List	   *bitmapplans;
+} BitmapOr;
+
+/*
+ * ==========
+ * Scan nodes
+ * ==========
+ */
+typedef struct Scan
+{
+	Plan		plan;
+	Index		scanrelid;		/* relid is index into the range table */
+} Scan;
+
+/* ----------------
+ *		sequential scan node
+ * ----------------
+ */
+typedef Scan SeqScan;
+
+/* ----------------
+ *		index scan node
+ *
+ * indexqualorig is an implicitly-ANDed list of index qual expressions, each
+ * in the same form it appeared in the query WHERE condition.  Each should
+ * be of the form (indexkey OP comparisonval) or (comparisonval OP indexkey).
+ * The indexkey is a Var or expression referencing column(s) of the index's
+ * base table.	The comparisonval might be any expression, but it won't use
+ * any columns of the base table.  The expressions are ordered by index
+ * column position (but items referencing the same index column can appear
+ * in any order).  indexqualorig is used at runtime only if we have to recheck
+ * a lossy indexqual.
+ *
+ * indexqual has the same form, but the expressions have been commuted if
+ * necessary to put the indexkeys on the left, and the indexkeys are replaced
+ * by Var nodes identifying the index columns (their varno is INDEX_VAR and
+ * their varattno is the index column number).
+ *
+ * indexorderbyorig is similarly the original form of any ORDER BY expressions
+ * that are being implemented by the index, while indexorderby is modified to
+ * have index column Vars on the left-hand side.  Here, multiple expressions
+ * must appear in exactly the ORDER BY order, and this is not necessarily the
+ * index column order.	Only the expressions are provided, not the auxiliary
+ * sort-order information from the ORDER BY SortGroupClauses; it's assumed
+ * that the sort ordering is fully determinable from the top-level operators.
+ * indexorderbyorig is unused at run time, but is needed for EXPLAIN.
+ * (Note these fields are used for amcanorderbyop cases, not amcanorder cases.)
+ *
+ * indexorderdir specifies the scan ordering, for indexscans on amcanorder
+ * indexes (for other indexes it should be "don't care").
+ * ----------------
+ */
+typedef struct IndexScan
+{
+	Scan		scan;
+	Oid			indexid;		/* OID of index to scan */
+	List	   *indexqual;		/* list of index quals (usually OpExprs) */
+	List	   *indexqualorig;	/* the same in original form */
+	List	   *indexorderby;	/* list of index ORDER BY exprs */
+	List	   *indexorderbyorig;		/* the same in original form */
+	ScanDirection indexorderdir;	/* forward or backward or don't care */
+} IndexScan;
+
+/* ----------------
+ *		index-only scan node
+ *
+ * IndexOnlyScan is very similar to IndexScan, but it specifies an
+ * index-only scan, in which the data comes from the index not the heap.
+ * Because of this, *all* Vars in the plan node's targetlist, qual, and
+ * index expressions reference index columns and have varno = INDEX_VAR.
+ * Hence we do not need separate indexqualorig and indexorderbyorig lists,
+ * since their contents would be equivalent to indexqual and indexorderby.
+ *
+ * To help EXPLAIN interpret the index Vars for display, we provide
+ * indextlist, which represents the contents of the index as a targetlist
+ * with one TLE per index column.  Vars appearing in this list reference
+ * the base table, and this is the only field in the plan node that may
+ * contain such Vars.
+ * ----------------
+ */
+typedef struct IndexOnlyScan
+{
+	Scan		scan;
+	Oid			indexid;		/* OID of index to scan */
+	List	   *indexqual;		/* list of index quals (usually OpExprs) */
+	List	   *indexorderby;	/* list of index ORDER BY exprs */
+	List	   *indextlist;		/* TargetEntry list describing index's cols */
+	ScanDirection indexorderdir;	/* forward or backward or don't care */
+} IndexOnlyScan;
+
+/* ----------------
+ *		bitmap index scan node
+ *
+ * BitmapIndexScan delivers a bitmap of potential tuple locations;
+ * it does not access the heap itself.	The bitmap is used by an
+ * ancestor BitmapHeapScan node, possibly after passing through
+ * intermediate BitmapAnd and/or BitmapOr nodes to combine it with
+ * the results of other BitmapIndexScans.
+ *
+ * The fields have the same meanings as for IndexScan, except we don't
+ * store a direction flag because direction is uninteresting.
+ *
+ * In a BitmapIndexScan plan node, the targetlist and qual fields are
+ * not used and are always NIL.  The indexqualorig field is unused at
+ * run time too, but is saved for the benefit of EXPLAIN.
+ * ----------------
+ */
+typedef struct BitmapIndexScan
+{
+	Scan		scan;
+	Oid			indexid;		/* OID of index to scan */
+	List	   *indexqual;		/* list of index quals (OpExprs) */
+	List	   *indexqualorig;	/* the same in original form */
+} BitmapIndexScan;
+
+/* ----------------
+ *		bitmap sequential scan node
+ *
+ * This needs a copy of the qual conditions being used by the input index
+ * scans because there are various cases where we need to recheck the quals;
+ * for example, when the bitmap is lossy about the specific rows on a page
+ * that meet the index condition.
+ * ----------------
+ */
+typedef struct BitmapHeapScan
+{
+	Scan		scan;
+	List	   *bitmapqualorig; /* index quals, in standard expr form */
+} BitmapHeapScan;
+
+/* ----------------
+ *		tid scan node
+ *
+ * tidquals is an implicitly OR'ed list of qual expressions of the form
+ * "CTID = pseudoconstant" or "CTID = ANY(pseudoconstant_array)".
+ * ----------------
+ */
+typedef struct TidScan
+{
+	Scan		scan;
+	List	   *tidquals;		/* qual(s) involving CTID = something */
+} TidScan;
+
+/* ----------------
+ *		subquery scan node
+ *
+ * SubqueryScan is for scanning the output of a sub-query in the range table.
+ * We often need an extra plan node above the sub-query's plan to perform
+ * expression evaluations (which we can't push into the sub-query without
+ * risking changing its semantics).  Although we are not scanning a physical
+ * relation, we make this a descendant of Scan anyway for code-sharing
+ * purposes.
+ *
+ * Note: we store the sub-plan in the type-specific subplan field, not in
+ * the generic lefttree field as you might expect.	This is because we do
+ * not want plan-tree-traversal routines to recurse into the subplan without
+ * knowing that they are changing Query contexts.
+ * ----------------
+ */
+typedef struct SubqueryScan
+{
+	Scan		scan;
+	Plan	   *subplan;
+} SubqueryScan;
+
+/* ----------------
+ *		FunctionScan node
+ * ----------------
+ */
+typedef struct FunctionScan
+{
+	Scan		scan;
+	Node	   *funcexpr;		/* expression tree for func call */
+	List	   *funccolnames;	/* output column names (string Value nodes) */
+	List	   *funccoltypes;	/* OID list of column type OIDs */
+	List	   *funccoltypmods; /* integer list of column typmods */
+	List	   *funccolcollations;		/* OID list of column collation OIDs */
+} FunctionScan;
+
+/* ----------------
+ *		ValuesScan node
+ * ----------------
+ */
+typedef struct ValuesScan
+{
+	Scan		scan;
+	List	   *values_lists;	/* list of expression lists */
+} ValuesScan;
+
+/* ----------------
+ *		CteScan node
+ * ----------------
+ */
+typedef struct CteScan
+{
+	Scan		scan;
+	int			ctePlanId;		/* ID of init SubPlan for CTE */
+	int			cteParam;		/* ID of Param representing CTE output */
+} CteScan;
+
+/* ----------------
+ *		WorkTableScan node
+ * ----------------
+ */
+typedef struct WorkTableScan
+{
+	Scan		scan;
+	int			wtParam;		/* ID of Param representing work table */
+} WorkTableScan;
+
+/* ----------------
+ *		ForeignScan node
+ *
+ * fdw_exprs and fdw_private are both under the control of the foreign-data
+ * wrapper, but fdw_exprs is presumed to contain expression trees and will
+ * be post-processed accordingly by the planner; fdw_private won't be.
+ * Note that everything in both lists must be copiable by copyObject().
+ * One way to store an arbitrary blob of bytes is to represent it as a bytea
+ * Const.  Usually, though, you'll be better off choosing a representation
+ * that can be dumped usefully by nodeToString().
+ * ----------------
+ */
+typedef struct ForeignScan
+{
+	Scan		scan;
+	List	   *fdw_exprs;		/* expressions that FDW may evaluate */
+	List	   *fdw_private;	/* private data for FDW */
+	bool		fsSystemCol;	/* true if any "system column" is needed */
+} ForeignScan;
+
+
+/*
+ * ==========
+ * Join nodes
+ * ==========
+ */
+
+/* ----------------
+ *		Join node
+ *
+ * jointype:	rule for joining tuples from left and right subtrees
+ * joinqual:	qual conditions that came from JOIN/ON or JOIN/USING
+ *				(plan.qual contains conditions that came from WHERE)
+ *
+ * When jointype is INNER, joinqual and plan.qual are semantically
+ * interchangeable.  For OUTER jointypes, the two are *not* interchangeable;
+ * only joinqual is used to determine whether a match has been found for
+ * the purpose of deciding whether to generate null-extended tuples.
+ * (But plan.qual is still applied before actually returning a tuple.)
+ * For an outer join, only joinquals are allowed to be used as the merge
+ * or hash condition of a merge or hash join.
+ * ----------------
+ */
+typedef struct Join
+{
+	Plan		plan;
+	JoinType	jointype;
+	List	   *joinqual;		/* JOIN quals (in addition to plan.qual) */
+} Join;
+
+/* ----------------
+ *		nest loop join node
+ *
+ * The nestParams list identifies any executor Params that must be passed
+ * into execution of the inner subplan carrying values from the current row
+ * of the outer subplan.  Currently we restrict these values to be simple
+ * Vars, but perhaps someday that'd be worth relaxing.  (Note: during plan
+ * creation, the paramval can actually be a PlaceHolderVar expression; but it
+ * must be a Var with varno OUTER_VAR by the time it gets to the executor.)
+ * ----------------
+ */
+typedef struct NestLoop
+{
+	Join		join;
+	List	   *nestParams;		/* list of NestLoopParam nodes */
+} NestLoop;
+
+typedef struct NestLoopParam
+{
+	NodeTag		type;
+	int			paramno;		/* number of the PARAM_EXEC Param to set */
+	Var		   *paramval;		/* outer-relation Var to assign to Param */
+} NestLoopParam;
+
+/* ----------------
+ *		merge join node
+ *
+ * The expected ordering of each mergeable column is described by a btree
+ * opfamily OID, a collation OID, a direction (BTLessStrategyNumber or
+ * BTGreaterStrategyNumber) and a nulls-first flag.  Note that the two sides
+ * of each mergeclause may be of different datatypes, but they are ordered the
+ * same way according to the common opfamily and collation.  The operator in
+ * each mergeclause must be an equality operator of the indicated opfamily.
+ * ----------------
+ */
+typedef struct MergeJoin
+{
+	Join		join;
+	List	   *mergeclauses;	/* mergeclauses as expression trees */
+	/* these are arrays, but have the same length as the mergeclauses list: */
+	Oid		   *mergeFamilies;	/* per-clause OIDs of btree opfamilies */
+	Oid		   *mergeCollations;	/* per-clause OIDs of collations */
+	int		   *mergeStrategies;	/* per-clause ordering (ASC or DESC) */
+	bool	   *mergeNullsFirst;	/* per-clause nulls ordering */
+} MergeJoin;
+
+/* ----------------
+ *		hash join node
+ * ----------------
+ */
+typedef struct HashJoin
+{
+	Join		join;
+	List	   *hashclauses;
+} HashJoin;
+
+/* ----------------
+ *		materialization node
+ * ----------------
+ */
+typedef struct Material
+{
+	Plan		plan;
+} Material;
+
+/* ----------------
+ *		sort node
+ * ----------------
+ */
+typedef struct Sort
+{
+	Plan		plan;
+	int			numCols;		/* number of sort-key columns */
+	AttrNumber *sortColIdx;		/* their indexes in the target list */
+	Oid		   *sortOperators;	/* OIDs of operators to sort them by */
+	Oid		   *collations;		/* OIDs of collations */
+	bool	   *nullsFirst;		/* NULLS FIRST/LAST directions */
+} Sort;
+
+/* ---------------
+ *	 group node -
+ *		Used for queries with GROUP BY (but no aggregates) specified.
+ *		The input must be presorted according to the grouping columns.
+ * ---------------
+ */
+typedef struct Group
+{
+	Plan		plan;
+	int			numCols;		/* number of grouping columns */
+	AttrNumber *grpColIdx;		/* their indexes in the target list */
+	Oid		   *grpOperators;	/* equality operators to compare with */
+} Group;
+
+/* ---------------
+ *		aggregate node
+ *
+ * An Agg node implements plain or grouped aggregation.  For grouped
+ * aggregation, we can work with presorted input or unsorted input;
+ * the latter strategy uses an internal hashtable.
+ *
+ * Notice the lack of any direct info about the aggregate functions to be
+ * computed.  They are found by scanning the node's tlist and quals during
+ * executor startup.  (It is possible that there are no aggregate functions;
+ * this could happen if they get optimized away by constant-folding, or if
+ * we are using the Agg node to implement hash-based grouping.)
+ * ---------------
+ */
+typedef enum AggStrategy
+{
+	AGG_PLAIN,					/* simple agg across all input rows */
+	AGG_SORTED,					/* grouped agg, input must be sorted */
+	AGG_HASHED					/* grouped agg, use internal hashtable */
+} AggStrategy;
+
+typedef struct Agg
+{
+	Plan		plan;
+	AggStrategy aggstrategy;
+	int			numCols;		/* number of grouping columns */
+	AttrNumber *grpColIdx;		/* their indexes in the target list */
+	Oid		   *grpOperators;	/* equality operators to compare with */
+	long		numGroups;		/* estimated number of groups in input */
+} Agg;
+
+/* ----------------
+ *		window aggregate node
+ * ----------------
+ */
+typedef struct WindowAgg
+{
+	Plan		plan;
+	Index		winref;			/* ID referenced by window functions */
+	int			partNumCols;	/* number of columns in partition clause */
+	AttrNumber *partColIdx;		/* their indexes in the target list */
+	Oid		   *partOperators;	/* equality operators for partition columns */
+	int			ordNumCols;		/* number of columns in ordering clause */
+	AttrNumber *ordColIdx;		/* their indexes in the target list */
+	Oid		   *ordOperators;	/* equality operators for ordering columns */
+	int			frameOptions;	/* frame_clause options, see WindowDef */
+	Node	   *startOffset;	/* expression for starting bound, if any */
+	Node	   *endOffset;		/* expression for ending bound, if any */
+} WindowAgg;
+
+/* ----------------
+ *		unique node
+ * ----------------
+ */
+typedef struct Unique
+{
+	Plan		plan;
+	int			numCols;		/* number of columns to check for uniqueness */
+	AttrNumber *uniqColIdx;		/* their indexes in the target list */
+	Oid		   *uniqOperators;	/* equality operators to compare with */
+} Unique;
+
+/* ----------------
+ *		hash build node
+ *
+ * If the executor is supposed to try to apply skew join optimization, then
+ * skewTable/skewColumn/skewInherit identify the outer relation's join key
+ * column, from which the relevant MCV statistics can be fetched.  Also, its
+ * type information is provided to save a lookup.
+ * ----------------
+ */
+typedef struct Hash
+{
+	Plan		plan;
+	Oid			skewTable;		/* outer join key's table OID, or InvalidOid */
+	AttrNumber	skewColumn;		/* outer join key's column #, or zero */
+	bool		skewInherit;	/* is outer join rel an inheritance tree? */
+	Oid			skewColType;	/* datatype of the outer key column */
+	int32		skewColTypmod;	/* typmod of the outer key column */
+	/* all other info is in the parent HashJoin node */
+} Hash;
+
+/* ----------------
+ *		setop node
+ * ----------------
+ */
+typedef enum SetOpCmd
+{
+	SETOPCMD_INTERSECT,
+	SETOPCMD_INTERSECT_ALL,
+	SETOPCMD_EXCEPT,
+	SETOPCMD_EXCEPT_ALL
+} SetOpCmd;
+
+typedef enum SetOpStrategy
+{
+	SETOP_SORTED,				/* input must be sorted */
+	SETOP_HASHED				/* use internal hashtable */
+} SetOpStrategy;
+
+typedef struct SetOp
+{
+	Plan		plan;
+	SetOpCmd	cmd;			/* what to do */
+	SetOpStrategy strategy;		/* how to do it */
+	int			numCols;		/* number of columns to check for
+								 * duplicate-ness */
+	AttrNumber *dupColIdx;		/* their indexes in the target list */
+	Oid		   *dupOperators;	/* equality operators to compare with */
+	AttrNumber	flagColIdx;		/* where is the flag column, if any */
+	int			firstFlag;		/* flag value for first input relation */
+	long		numGroups;		/* estimated number of groups in input */
+} SetOp;
+
+/* ----------------
+ *		lock-rows node
+ *
+ * rowMarks identifies the rels to be locked by this node; it should be
+ * a subset of the rowMarks listed in the top-level PlannedStmt.
+ * epqParam is a Param that all scan nodes below this one must depend on.
+ * It is used to force re-evaluation of the plan during EvalPlanQual.
+ * ----------------
+ */
+typedef struct LockRows
+{
+	Plan		plan;
+	List	   *rowMarks;		/* a list of PlanRowMark's */
+	int			epqParam;		/* ID of Param for EvalPlanQual re-eval */
+} LockRows;
+
+/* ----------------
+ *		limit node
+ *
+ * Note: as of Postgres 8.2, the offset and count expressions are expected
+ * to yield int8, rather than int4 as before.
+ * ----------------
+ */
+typedef struct Limit
+{
+	Plan		plan;
+	Node	   *limitOffset;	/* OFFSET parameter, or NULL if none */
+	Node	   *limitCount;		/* COUNT parameter, or NULL if none */
+} Limit;
+
+
+/*
+ * RowMarkType -
+ *	  enums for types of row-marking operations
+ *
+ * When doing UPDATE, DELETE, or SELECT FOR UPDATE/SHARE, we have to uniquely
+ * identify all the source rows, not only those from the target relations, so
+ * that we can perform EvalPlanQual rechecking at need.  For plain tables we
+ * can just fetch the TID, the same as for a target relation.  Otherwise (for
+ * example for VALUES or FUNCTION scans) we have to copy the whole row value.
+ * The latter is pretty inefficient but fortunately the case is not
+ * performance-critical in practice.
+ */
+typedef enum RowMarkType
+{
+	ROW_MARK_EXCLUSIVE,			/* obtain exclusive tuple lock */
+	ROW_MARK_SHARE,				/* obtain shared tuple lock */
+	ROW_MARK_REFERENCE,			/* just fetch the TID */
+	ROW_MARK_COPY				/* physically copy the row value */
+} RowMarkType;
+
+#define RowMarkRequiresRowShareLock(marktype)  ((marktype) <= ROW_MARK_SHARE)
+
+/*
+ * PlanRowMark -
+ *	   plan-time representation of FOR UPDATE/SHARE clauses
+ *
+ * When doing UPDATE, DELETE, or SELECT FOR UPDATE/SHARE, we create a separate
+ * PlanRowMark node for each non-target relation in the query.	Relations that
+ * are not specified as FOR UPDATE/SHARE are marked ROW_MARK_REFERENCE (if
+ * real tables) or ROW_MARK_COPY (if not).
+ *
+ * Initially all PlanRowMarks have rti == prti and isParent == false.
+ * When the planner discovers that a relation is the root of an inheritance
+ * tree, it sets isParent true, and adds an additional PlanRowMark to the
+ * list for each child relation (including the target rel itself in its role
+ * as a child).  The child entries have rti == child rel's RT index and
+ * prti == parent's RT index, and can therefore be recognized as children by
+ * the fact that prti != rti.
+ *
+ * The planner also adds resjunk output columns to the plan that carry
+ * information sufficient to identify the locked or fetched rows.  For
+ * tables (markType != ROW_MARK_COPY), these columns are named
+ *		tableoid%u			OID of table
+ *		ctid%u				TID of row
+ * The tableoid column is only present for an inheritance hierarchy.
+ * When markType == ROW_MARK_COPY, there is instead a single column named
+ *		wholerow%u			whole-row value of relation
+ * In all three cases, %u represents the rowmark ID number (rowmarkId).
+ * This number is unique within a plan tree, except that child relation
+ * entries copy their parent's rowmarkId.  (Assigning unique numbers
+ * means we needn't renumber rowmarkIds when flattening subqueries, which
+ * would require finding and renaming the resjunk columns as well.)
+ * Note this means that all tables in an inheritance hierarchy share the
+ * same resjunk column names.  However, in an inherited UPDATE/DELETE the
+ * columns could have different physical column numbers in each subplan.
+ */
+typedef struct PlanRowMark
+{
+	NodeTag		type;
+	Index		rti;			/* range table index of markable relation */
+	Index		prti;			/* range table index of parent relation */
+	Index		rowmarkId;		/* unique identifier for resjunk columns */
+	RowMarkType markType;		/* see enum above */
+	bool		noWait;			/* NOWAIT option */
+	bool		isParent;		/* true if this is a "dummy" parent entry */
+} PlanRowMark;
+
+
+/*
+ * Plan invalidation info
+ *
+ * We track the objects on which a PlannedStmt depends in two ways:
+ * relations are recorded as a simple list of OIDs, and everything else
+ * is represented as a list of PlanInvalItems.	A PlanInvalItem is designed
+ * to be used with the syscache invalidation mechanism, so it identifies a
+ * system catalog entry by cache ID and hash value.
+ */
+typedef struct PlanInvalItem
+{
+	NodeTag		type;
+	int			cacheId;		/* a syscache ID, see utils/syscache.h */
+	uint32		hashValue;		/* hash value of object's cache lookup key */
+} PlanInvalItem;
+
+#endif   /* PLANNODES_H */

pg_include/nodes/print.h

@@ -0,0 +1,34 @@
+/*-------------------------------------------------------------------------
+ *
+ * print.h
+ *	  definitions for nodes/print.c
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/print.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PRINT_H
+#define PRINT_H
+
+#include "executor/tuptable.h"
+
+
+#define nodeDisplay(x)		pprint(x)
+
+extern void print(const void *obj);
+extern void pprint(const void *obj);
+extern void elog_node_display(int lev, const char *title,
+				  const void *obj, bool pretty);
+extern char *format_node_dump(const char *dump);
+extern char *pretty_format_node_dump(const char *dump);
+extern void print_rt(const List *rtable);
+extern void print_expr(const Node *expr, const List *rtable);
+extern void print_pathkeys(const List *pathkeys, const List *rtable);
+extern void print_tl(const List *tlist, const List *rtable);
+extern void print_slot(TupleTableSlot *slot);
+
+#endif   /* PRINT_H */

pg_include/nodes/readfuncs.h

@@ -0,0 +1,31 @@
+/*-------------------------------------------------------------------------
+ *
+ * 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) 1996-2012, 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"
+
+/*
+ * prototypes for functions in read.c (the lisp token parser)
+ */
+extern char *pg_strtok(int *length);
+extern char *debackslash(char *token, int length);
+extern void *nodeRead(char *token, int tok_len);
+
+/*
+ * prototypes for functions in readfuncs.c
+ */
+extern Node *parseNodeString(void);
+
+#endif   /* READFUNCS_H */

pg_include/nodes/replnodes.h

@@ -0,0 +1,52 @@
+/*-------------------------------------------------------------------------
+ *
+ * replnodes.h
+ *	  definitions for replication grammar parse nodes
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/replnodes.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef REPLNODES_H
+#define REPLNODES_H
+
+#include "access/xlogdefs.h"
+#include "nodes/pg_list.h"
+
+
+/* ----------------------
+ *		IDENTIFY_SYSTEM command
+ * ----------------------
+ */
+typedef struct IdentifySystemCmd
+{
+	NodeTag		type;
+} IdentifySystemCmd;
+
+
+/* ----------------------
+ *		BASE_BACKUP command
+ * ----------------------
+ */
+typedef struct BaseBackupCmd
+{
+	NodeTag		type;
+	List	   *options;
+} BaseBackupCmd;
+
+
+/* ----------------------
+ *		START_REPLICATION command
+ * ----------------------
+ */
+typedef struct StartReplicationCmd
+{
+	NodeTag		type;
+	XLogRecPtr	startpoint;
+} StartReplicationCmd;
+
+#endif   /* REPLNODES_H */

pg_include/nodes/tidbitmap.h

@@ -0,0 +1,66 @@
+/*-------------------------------------------------------------------------
+ *
+ * tidbitmap.h
+ *	  PostgreSQL tuple-id (TID) bitmap package
+ *
+ * This module provides bitmap data structures that are spiritually
+ * similar to Bitmapsets, but are specially adapted to store sets of
+ * tuple identifiers (TIDs), or ItemPointers.  In particular, the division
+ * of an ItemPointer into BlockNumber and OffsetNumber is catered for.
+ * Also, since we wish to be able to store very large tuple sets in
+ * memory with this data structure, we support "lossy" storage, in which
+ * we no longer remember individual tuple offsets on a page but only the
+ * fact that a particular page needs to be visited.
+ *
+ *
+ * Copyright (c) 2003-2012, PostgreSQL Global Development Group
+ *
+ * src/include/nodes/tidbitmap.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef TIDBITMAP_H
+#define TIDBITMAP_H
+
+#include "storage/itemptr.h"
+
+
+/*
+ * Actual bitmap representation is private to tidbitmap.c.	Callers can
+ * do IsA(x, TIDBitmap) on it, but nothing else.
+ */
+typedef struct TIDBitmap TIDBitmap;
+
+/* Likewise, TBMIterator is private */
+typedef struct TBMIterator TBMIterator;
+
+/* Result structure for tbm_iterate */
+typedef struct
+{
+	BlockNumber blockno;		/* page number containing tuples */
+	int			ntuples;		/* -1 indicates lossy result */
+	bool		recheck;		/* should the tuples be rechecked? */
+	/* Note: recheck is always true if ntuples < 0 */
+	OffsetNumber offsets[1];	/* VARIABLE LENGTH ARRAY */
+} TBMIterateResult;				/* VARIABLE LENGTH STRUCT */
+
+/* function prototypes in nodes/tidbitmap.c */
+
+extern TIDBitmap *tbm_create(long maxbytes);
+extern void tbm_free(TIDBitmap *tbm);
+
+extern void tbm_add_tuples(TIDBitmap *tbm,
+			   const ItemPointer tids, int ntids,
+			   bool recheck);
+extern void tbm_add_page(TIDBitmap *tbm, BlockNumber pageno);
+
+extern void tbm_union(TIDBitmap *a, const TIDBitmap *b);
+extern void tbm_intersect(TIDBitmap *a, const TIDBitmap *b);
+
+extern bool tbm_is_empty(const TIDBitmap *tbm);
+
+extern TBMIterator *tbm_begin_iterate(TIDBitmap *tbm);
+extern TBMIterateResult *tbm_iterate(TBMIterator *iterator);
+extern void tbm_end_iterate(TBMIterator *iterator);
+
+#endif   /* TIDBITMAP_H */

pg_include/nodes/value.h

@@ -0,0 +1,61 @@
+/*-------------------------------------------------------------------------
+ *
+ * value.h
+ *	  interface for Value nodes
+ *
+ *
+ * Copyright (c) 2003-2012, PostgreSQL Global Development Group
+ *
+ * src/include/nodes/value.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef VALUE_H
+#define VALUE_H
+
+#include "nodes/nodes.h"
+
+/*----------------------
+ *		Value node
+ *
+ * The same Value struct is used for five node types: T_Integer,
+ * T_Float, T_String, T_BitString, T_Null.
+ *
+ * Integral values are actually represented by a machine integer,
+ * but both floats and strings are represented as strings.
+ * Using T_Float as the node type simply indicates that
+ * the contents of the string look like a valid numeric literal.
+ *
+ * (Before Postgres 7.0, we used a double to represent T_Float,
+ * but that creates loss-of-precision problems when the value is
+ * ultimately destined to be converted to NUMERIC.	Since Value nodes
+ * are only used in the parsing process, not for runtime data, it's
+ * better to use the more general representation.)
+ *
+ * Note that an integer-looking string will get lexed as T_Float if
+ * the value is too large to fit in a 'long'.
+ *
+ * Nulls, of course, don't need the value part at all.
+ *----------------------
+ */
+typedef struct Value
+{
+	NodeTag		type;			/* tag appropriately (eg. T_String) */
+	union ValUnion
+	{
+		long		ival;		/* machine integer */
+		char	   *str;		/* string */
+	}			val;
+} Value;
+
+#define intVal(v)		(((Value *)(v))->val.ival)
+#define floatVal(v)		atof(((Value *)(v))->val.str)
+#define strVal(v)		(((Value *)(v))->val.str)
+
+extern Value *makeInteger(long i);
+extern Value *makeFloat(char *numericStr);
+extern Value *makeString(char *str);
+extern Value *makeBitString(char *str);
+
+#endif   /* VALUE_H */