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Infrastructure for deducing Param types from context, in the same way

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that the types of untyped string-literal constants are deduced (ie,
when coerce_type is applied to 'em, that's what the type must be).
Remove the ancient hack of storing the input Param-types array as a
global variable, and put the info into ParseState instead.  This touches
a lot of files because of adjustment of routine parameter lists, but
it's really not a large patch.  Note: PREPARE statement still insists on
exact specification of parameter types, but that could easily be relaxed
now, if we wanted to do so.
This commit is contained in:
Tom Lane
2003-04-29 22:13:11 +00:00
parent 19141f5584
commit aa282d4446
29 changed files with 442 additions and 247 deletions
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18
src/backend/parser/parse_node.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.77 2003/04/08 23:20:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.78 2003/04/29 22:13:10 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -39,7 +39,12 @@ make_parsestate(ParseState *parentParseState)
pstate = palloc0(sizeof(ParseState));
pstate->parentParseState = parentParseState;
pstate->p_last_resno = 1;
/* Fill in fields that don't start at null/false/zero */
pstate->p_next_resno = 1;
if (parentParseState)
pstate->p_variableparams = parentParseState->p_variableparams;
return pstate;
}
@ -166,7 +171,8 @@ transformArraySubscripts(ParseState *pstate,
{
subexpr = transformExpr(pstate, ai->lidx);
/* If it's not int4 already, try to coerce */
subexpr = coerce_to_target_type(subexpr, exprType(subexpr),
subexpr = coerce_to_target_type(pstate,
subexpr, exprType(subexpr),
INT4OID, -1,
COERCION_ASSIGNMENT,
COERCE_IMPLICIT_CAST);
@ -186,7 +192,8 @@ transformArraySubscripts(ParseState *pstate,
}
subexpr = transformExpr(pstate, ai->uidx);
/* If it's not int4 already, try to coerce */
subexpr = coerce_to_target_type(subexpr, exprType(subexpr),
subexpr = coerce_to_target_type(pstate,
subexpr, exprType(subexpr),
INT4OID, -1,
COERCION_ASSIGNMENT,
COERCE_IMPLICIT_CAST);
@ -205,7 +212,8 @@ transformArraySubscripts(ParseState *pstate,
if (typesource != InvalidOid)
{
assignFrom = coerce_to_target_type(assignFrom, typesource,
assignFrom = coerce_to_target_type(pstate,
assignFrom, typesource,
typeneeded, arrayTypMod,
COERCION_ASSIGNMENT,
COERCE_IMPLICIT_CAST);