diff options
Diffstat (limited to 'src/include/nodes/primnodes.h')
| -rw-r--r-- | src/include/nodes/primnodes.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index 111ed7f8ce8..1d7c5115b64 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -10,7 +10,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: primnodes.h,v 1.67 2002/09/04 20:31:44 momjian Exp $ + * $Id: primnodes.h,v 1.68 2002/09/18 21:35:24 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -140,6 +140,30 @@ typedef struct RangeVar */ /* + * CoercionContext - distinguishes the allowed set of type casts + * + * NB: ordering of the alternatives is significant; later (larger) values + * allow more casts than earlier ones. + */ +typedef enum CoercionContext +{ + COERCION_IMPLICIT, /* coercion in context of expression */ + COERCION_ASSIGNMENT, /* coercion in context of assignment */ + COERCION_EXPLICIT /* explicit cast operation */ +} CoercionContext; + +/* + * CoercionForm - information showing how to display a function-call node + */ +typedef enum CoercionForm +{ + COERCE_EXPLICIT_CALL, /* display as a function call */ + COERCE_EXPLICIT_CAST, /* display as an explicit cast */ + COERCE_IMPLICIT_CAST, /* implicit cast, so hide it */ + COERCE_DONTCARE /* special case for pathkeys */ +} CoercionForm; + +/* * Expr */ typedef enum OpType @@ -194,6 +218,7 @@ typedef struct Func Oid funcid; /* PG_PROC OID of the function */ Oid funcresulttype; /* PG_TYPE OID of result value */ bool funcretset; /* true if function returns set */ + CoercionForm funcformat; /* how to display this function call */ FunctionCachePtr func_fcache; /* runtime state, or NULL */ } Func; @@ -460,6 +485,7 @@ typedef struct RelabelType Node *arg; /* input expression */ Oid resulttype; /* output type of coercion expression */ int32 resulttypmod; /* output typmod (usually -1) */ + CoercionForm relabelformat; /* how to display this node */ } RelabelType; |