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slight simplification of the if-else grammar rules

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Jeremy Ashkenas
2010-06-27 11:46:30 -04:00
parent 800fb81d1b
commit 8eedfe4bc6
2 changed files with 6 additions and 15 deletions
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11
src/grammar.coffee
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@@ -481,16 +481,11 @@ grammar: {
# The most basic form of *if* is a condition and an action. The following
# if-related rules are broken up along these lines in order to avoid
# ambiguity.
IfStart: [
IfBlock: [
o "IF Expression Block", -> new IfNode $2, $3
o "UNLESS Expression Block", -> new IfNode $2, $3, {invert: true}
o "IfStart ELSE IF Expression Block", -> $1.addElse (new IfNode($4, $5)).forceStatement()
]
# An **IfStart** can optionally be followed by an else block.
IfBlock: [
o "IfStart"
o "IfStart ELSE Block", -> $1.addElse $3
o "IfBlock ELSE IF Expression Block", -> $1.addElse (new IfNode($4, $5)).forceStatement()
o "IfBlock ELSE Block", -> $1.addElse $3
]
# The full complement of *if* expressions, including postfix one-liner