Ensure string interpolations with empty prefixes have raw values.

Without this the string node that is the left of the ConcatOp has no raw value, which is unexpected when parsing with `raw: true`.
michaelficarra · Jan 22, 2015 · 9fdedda · 9fdedda
1 parent b31ccfb
commit 9fdedda
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Showing 3 changed files with 6 additions and 2 deletions.
diff --git a/lib/parser.js b/lib/parser.js
diff --git a/src/grammar.pegcoffee b/src/grammar.pegcoffee
@@ -162,7 +162,7 @@
  expr
 
  createInterpolation = (es) ->
- init = new CS.String('').g()
+ init = new CS.String('').g().r('')
  foldl ((memo, s) ->
  if s instanceof CS.String
  left = memo

diff --git a/test/parser.coffee b/test/parser.coffee
@@ -169,6 +169,10 @@ suite 'Parser', ->
  eq 'aaaaaa', ast.body.statements[0].left.left.raw
  eq 'cccccc', ast.body.statements[0].right.raw
 
+ test 'empty string interpolation prefix', ->
+ ast = parse '"#{0}"', raw: yes
+ eq '', ast.body.statements[0].left.raw
+
  suite 'position/offset preservation', ->
 
  test 'basic indentation', ->