Add return statement

2014-08-01 08:26:27 +07:00 · 2014-08-01 08:26:27 +07:00 · edd9cb4987
parent 2389c52a43
commit edd9cb4987
2 changed files with 19 additions and 1 deletions
--- a/grammar.coffee
+++ b/grammar.coffee
@ -14,7 +14,8 @@ module.exports = compiler.grammar
      @expression_statement,
      @if_statement,
      @for_statement,
-      @statement_block)
+      @statement_block,
+      @return_statement)

    expression_statement: -> seq(
      optional(@expression), ";")
@ -33,6 +34,11 @@ module.exports = compiler.grammar
      ")",
      @statement)

+    return_statement: -> seq(
+      keyword("return"),
+      optional(@expression),
+      ";")
+
    expression: -> choice(
      @identifier,
      @number,
--- a/grammar_test/statements.txt
+++ b/grammar_test/statements.txt
@ -49,3 +49,15 @@ for (;;) {
    (statement_block
      (expression_statement (function_call (identifier) (identifier))))))
    
+============================================
+Return statements
+============================================
+
+return;
+return 5;
+
+---
+
+(program
+  (return_statement)
+  (return_statement (number)))