Function transformExprRecurse

src/backend/parser/parse_expr.c:115–347

}

static Node *
transformExprRecurse(ParseState *pstate, Node *expr)
{
	Node	   *result;

	if (expr == NULL)
		return NULL;

	/* Guard against stack overflow due to overly complex expressions */
	check_stack_depth();

	switch (nodeTag(expr))
	{
		case T_ColumnRef:
			result = transformColumnRef(pstate, (ColumnRef *) expr);
			break;

		case T_ParamRef:
			result = transformParamRef(pstate, (ParamRef *) expr);
			break;

		case T_A_Const:
			{
				A_Const    *con = (A_Const *) expr;
				Value	   *val = &con->val;

				result = (Node *) make_const(pstate, val, con->location);
				break;
			}

		case T_A_Indirection:
			result = transformIndirection(pstate, (A_Indirection *) expr);
			break;

		case T_A_ArrayExpr:
			result = transformArrayExpr(pstate, (A_ArrayExpr *) expr,
										InvalidOid, InvalidOid, -1);
			break;

		case T_TypeCast:
			result = transformTypeCast(pstate, (TypeCast *) expr);
			break;

		case T_CollateClause:
			result = transformCollateClause(pstate, (CollateClause *) expr);
			break;

		case T_A_Expr:
			{
				A_Expr	   *a = (A_Expr *) expr;

				switch (a->kind)
				{
					case AEXPR_OP:
						result = transformAExprOp(pstate, a);
						break;
					case AEXPR_OP_ANY:
						result = transformAExprOpAny(pstate, a);