Implemented else blocks

src/build/ast/Parse.go

@@ -7,19 +7,19 @@ import (
 
 // Parse generates an AST from a list of tokens.
 func Parse(tokens []token.Token, source []byte) (AST, error) {
-	tree := make(AST, 0, len(tokens)/64)
+	nodes := make(AST, 0, len(tokens)/64)
 
 	err := EachInstruction(tokens, func(instruction token.List) error {
-		node, err := parseNode(instruction, source)
+		node, err := parseNode(instruction, source, nodes)
 
 		if err == nil && node != nil {
-			tree = append(tree, node)
+			nodes = append(nodes, node)
 		}
 
 		return err
 	})
 
-	return tree, err
+	return nodes, err
 }
 
 // IsAssignment returns true if the expression is an assignment.