]> granicus.if.org Git - postgresql/blobdiff - src/include/parser/parse_coerce.h
Remove cvs keywords from all files.
[postgresql] / src / include / parser / parse_coerce.h
index ecc61ea716af99c0e621a9421fd7c671ec887dea..449d9d382ceaf8522d028af2a2a81f20ea3022fc 100644 (file)
@@ -4,59 +4,87 @@
  *     Routines for type coercion.
  *
  *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: parse_coerce.h,v 1.48 2002/10/24 22:09:00 tgl Exp $
+ * src/include/parser/parse_coerce.h
  *
  *-------------------------------------------------------------------------
  */
 #ifndef PARSE_COERCE_H
 #define PARSE_COERCE_H
 
-#include "catalog/pg_type.h"
 #include "parser/parse_node.h"
 
-typedef enum CATEGORY
+
+/* Type categories (see TYPCATEGORY_xxx symbols in catalog/pg_type.h) */
+typedef char TYPCATEGORY;
+
+/* Result codes for find_coercion_pathway */
+typedef enum CoercionPathType
 {
-       INVALID_TYPE,
-       UNKNOWN_TYPE,
-       BOOLEAN_TYPE,
-       STRING_TYPE,
-       BITSTRING_TYPE,
-       NUMERIC_TYPE,
-       DATETIME_TYPE,
-       TIMESPAN_TYPE,
-       GEOMETRIC_TYPE,
-       NETWORK_TYPE,
-       USER_TYPE
-} CATEGORY;
+       COERCION_PATH_NONE,                     /* failed to find any coercion pathway */
+       COERCION_PATH_FUNC,                     /* apply the specified coercion function */
+       COERCION_PATH_RELABELTYPE,      /* binary-compatible cast, no function */
+       COERCION_PATH_ARRAYCOERCE,      /* need an ArrayCoerceExpr node */
+       COERCION_PATH_COERCEVIAIO       /* need a CoerceViaIO node */
+} CoercionPathType;
 
 
 extern bool IsBinaryCoercible(Oid srctype, Oid targettype);
-extern bool IsPreferredType(CATEGORY category, Oid type);
-extern CATEGORY TypeCategory(Oid type);
+extern bool IsPreferredType(TYPCATEGORY category, Oid type);
+extern TYPCATEGORY TypeCategory(Oid type);
 
-extern Node *coerce_to_target_type(Node *expr, Oid exprtype,
-                                                                  Oid targettype, int32 targettypmod,
-                                                                  CoercionContext ccontext,
-                                                                  CoercionForm cformat);
+extern Node *coerce_to_target_type(ParseState *pstate,
+                                         Node *expr, Oid exprtype,
+                                         Oid targettype, int32 targettypmod,
+                                         CoercionContext ccontext,
+                                         CoercionForm cformat,
+                                         int location);
 extern bool can_coerce_type(int nargs, Oid *input_typeids, Oid *target_typeids,
-                                                       CoercionContext ccontext);
-extern Node *coerce_type(Node *node, Oid inputTypeId, Oid targetTypeId,
-                                                CoercionContext ccontext, CoercionForm cformat);
-extern Node *coerce_type_constraints(Node *arg, Oid typeId,
-                                                                        CoercionForm cformat);
+                               CoercionContext ccontext);
+extern Node *coerce_type(ParseState *pstate, Node *node,
+                       Oid inputTypeId, Oid targetTypeId, int32 targetTypeMod,
+                       CoercionContext ccontext, CoercionForm cformat, int location);
+extern Node *coerce_to_domain(Node *arg, Oid baseTypeId, int32 baseTypeMod,
+                                Oid typeId,
+                                CoercionForm cformat, int location,
+                                bool hideInputCoercion,
+                                bool lengthCoercionDone);
 
-extern Node *coerce_to_boolean(Node *node, const char *constructName);
+extern Node *coerce_to_boolean(ParseState *pstate, Node *node,
+                                 const char *constructName);
+extern Node *coerce_to_specific_type(ParseState *pstate, Node *node,
+                                               Oid targetTypeId,
+                                               const char *constructName);
 
-extern Oid     select_common_type(List *typeids, const char *context);
-extern Node *coerce_to_common_type(Node *node, Oid targetTypeId,
+extern int parser_coercion_errposition(ParseState *pstate,
+                                                       int coerce_location,
+                                                       Node *input_expr);
+
+extern Oid select_common_type(ParseState *pstate, List *exprs,
+                                  const char *context, Node **which_expr);
+extern Node *coerce_to_common_type(ParseState *pstate, Node *node,
+                                         Oid targetTypeId,
                                          const char *context);
 
-extern bool find_coercion_pathway(Oid targetTypeId, Oid sourceTypeId,
-                                                                 CoercionContext ccontext,
-                                                                 Oid *funcid);
-extern Oid     find_typmod_coercion_function(Oid typeId, int *nargs);
+extern bool check_generic_type_consistency(Oid *actual_arg_types,
+                                                          Oid *declared_arg_types,
+                                                          int nargs);
+extern Oid enforce_generic_type_consistency(Oid *actual_arg_types,
+                                                                Oid *declared_arg_types,
+                                                                int nargs,
+                                                                Oid rettype,
+                                                                bool allow_poly);
+extern Oid resolve_generic_type(Oid declared_type,
+                                        Oid context_actual_type,
+                                        Oid context_declared_type);
+
+extern CoercionPathType find_coercion_pathway(Oid targetTypeId,
+                                         Oid sourceTypeId,
+                                         CoercionContext ccontext,
+                                         Oid *funcid);
+extern CoercionPathType find_typmod_coercion_function(Oid typeId,
+                                                         Oid *funcid);
 
 #endif   /* PARSE_COERCE_H */