Function _ASTClause_BuildReferenceMap

src/ast/ast_build_reference_map.c:443–495

}

static void _ASTClause_BuildReferenceMap(AST *ast, const cypher_astnode_t *clause) {
	if(!clause) return;

	cypher_astnode_type_t type = cypher_astnode_type(clause);
	if(type == CYPHER_AST_RETURN) {
		// add referenced aliases for RETURN projections
		uint projectionCount = cypher_ast_return_nprojections(clause);
		for(uint i = 0 ; i < projectionCount; i ++) {
			_AST_MapProjectionAlias(ast, cypher_ast_return_get_projection(clause, i));
		}
		// add referenced aliases for RETURN's ORDER BY entities
		const cypher_astnode_t *order_by = cypher_ast_return_get_order_by(clause);
		if(order_by) _AST_MapOrderByReferences(ast, order_by);
	} else if(type == CYPHER_AST_WITH) {
		// add referenced aliases for WITH projections
		uint projectionCount = cypher_ast_with_nprojections(clause);
		for(uint i = 0 ; i < projectionCount; i ++) {
			_AST_MapProjectionAlias(ast, cypher_ast_with_get_projection(clause, i));
		}
		// add referenced aliases for WITH's ORDER BY entities
		const cypher_astnode_t *order_by = cypher_ast_with_get_order_by(clause);
		if(order_by) _AST_MapOrderByReferences(ast, order_by);
	} else if(type == CYPHER_AST_MATCH) {
		// add referenced aliases from MATCH clause
		// inline filtered and explicit WHERE filter
		_AST_MapMatchClauseReferences(ast, clause);
	} else if(type == CYPHER_AST_CREATE) {
		// add referenced aliases for CREATE clause
		_AST_MapCreateClauseReferences(ast, clause);
	} else if(type == CYPHER_AST_MERGE) {
		// add referenced aliases for MERGE clause
		// inline filtered and modified entities
		_AST_MapMergeClauseReference(ast, clause);
	} else if(type == CYPHER_AST_SET) {
		// add referenced aliases for SET clause
		_AST_MapSetClauseReferences(ast, clause);
	} else if(type == CYPHER_AST_DELETE) {
		// add referenced aliases for DELETE clause
		_AST_MapDeleteClauseReferences(ast, clause);
	} else if(type == CYPHER_AST_REMOVE) {
		// add referenced aliases for REMOVE clause
		_AST_MapRemoveClauseReferences(ast, clause);
	} else if(type == CYPHER_AST_UNWIND) {
		// add referenced aliases for UNWIND clause
		_AST_MapUnwindClauseReferences(ast, clause);
	} else if(type == CYPHER_AST_FOREACH) {
		// add referenced aliases for a FOREACH clause
		_AST_MapForeachClauseReferences(ast, clause);
	} else if(type == CYPHER_AST_CALL_SUBQUERY) {
		// add referenced aliases for a CALL {} clause
		_AST_MapCallSubqueryReferences(ast, clause);
	}
}

// Map the referred aliases (LHS) in entities projected by a WITH or RETURN clause.
static void _AST_MapProjectionClause(AST *ast_segment, const cypher_astnode_t *projection) {