diff options
Diffstat (limited to 'src/include/parser/parse_coerce.h')
| -rw-r--r-- | src/include/parser/parse_coerce.h | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/src/include/parser/parse_coerce.h b/src/include/parser/parse_coerce.h index 23aaa87cfa..959ac50cde 100644 --- a/src/include/parser/parse_coerce.h +++ b/src/include/parser/parse_coerce.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/parser/parse_coerce.h,v 1.70 2007/03/27 23:21:12 tgl Exp $ + * $PostgreSQL: pgsql/src/include/parser/parse_coerce.h,v 1.71 2007/06/05 21:31:08 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -17,6 +17,7 @@ #include "parser/parse_node.h" +/* Type categories (kluge ... ought to be extensible) */ typedef enum CATEGORY { INVALID_TYPE, @@ -33,6 +34,16 @@ typedef enum CATEGORY USER_TYPE } CATEGORY; +/* Result codes for find_coercion_pathway */ +typedef enum CoercionPathType +{ + 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); @@ -75,10 +86,11 @@ extern Oid resolve_generic_type(Oid declared_type, Oid context_actual_type, Oid context_declared_type); -extern bool find_coercion_pathway(Oid targetTypeId, Oid sourceTypeId, - CoercionContext ccontext, - Oid *funcid, bool *arrayCoerce); -extern bool find_typmod_coercion_function(Oid typeId, - Oid *funcid, bool *arrayCoerce); +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 */ |