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adding existence soaks for indexed-lookup property accesses: obj?['property']

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This commit is contained in:
Jeremy Ashkenas
2010-02-24 00:06:01 -05:00
parent 4eeb8c4bd2
commit 10d335ccb1
10 changed files with 111 additions and 83 deletions
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14
src/lexer.coffee
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@@ -246,13 +246,21 @@ lex::literal_token: ->
value: match and match[1]
@tag_parameters() if value and value.match(CODE)
value ||= @chunk.substr(0, 1)
not_spaced: not @prev() or not @prev().spaced
tag: value
if value.match(ASSIGNMENT)
tag: 'ASSIGN'
throw new Error('SyntaxError: Reserved word "' + @value() + '" on line ' + @line + ' can\'t be assigned') if JS_FORBIDDEN.indexOf(@value()) >= 0
tag: 'TERMINATOR' if value == ';'
if CALLABLE.indexOf(@tag()) >= 0 and (not @prev() or not @prev().spaced)
else if value is ';'
tag: 'TERMINATOR'
else if value is '[' and @tag() is '?' and not_spaced
tag: 'SOAKED_INDEX_START'
@soaked_index: true
@tokens.pop()
else if value is ']' and @soaked_index
tag: 'SOAKED_INDEX_END'
@soaked_index: false
else if CALLABLE.indexOf(@tag()) >= 0 and not_spaced
tag: 'CALL_START' if value is '('
tag: 'INDEX_START' if value is '['
@token tag, value