Function compare_expr

src/gpre/sqe.cpp:1281–1309

//

static bool compare_expr(const gpre_nod* node1, const gpre_nod* node2)
{
	assert_IS_NOD(node1);
	assert_IS_NOD(node2);

	if (node1->nod_type != node2->nod_type)
		return false;

	switch (node1->nod_type)
	{
	case nod_field:
		{
			const ref* ref1 = (ref*) node1->nod_arg[0];
			const ref* ref2 = (ref*) node2->nod_arg[0];
			return ref1->ref_context == ref2->ref_context && ref1->ref_field == ref2->ref_field &&
				ref1->ref_master == ref2->ref_master;
		}

	case nod_map_ref:
		return node1->nod_arg[0] == node2->nod_arg[0];

	case nod_udf:
	case nod_gen_id:
		return node1->nod_arg[0] == node2->nod_arg[0] && node1->nod_arg[1] == node2->nod_arg[1];

	default:
		return false;
	}
}


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