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adding conditional while loops with while ... when

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This commit is contained in:
Jeremy Ashkenas
2010-02-23 22:53:43 -05:00
parent 4d146bacb1
commit 4eeb8c4bd2
7 changed files with 90 additions and 65 deletions
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12
src/nodes.coffee
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@@ -701,8 +701,13 @@ SplatNode: exports.SplatNode: inherit Node, {
WhileNode: exports.WhileNode: inherit Node, {
type: 'While'
constructor: (condition, body) ->
@children:[@condition: condition, @body: body]
constructor: (condition, opts) ->
@children:[@condition: condition]
@filter: opts and opts.filter
this
add_body: (body) ->
@children.push @body: body
this
top_sensitive: ->
@@ -718,10 +723,11 @@ WhileNode: exports.WhileNode: inherit Node, {
if not top
rvar: o.scope.free_variable()
set: @idt() + rvar + ' = [];\n'
@body: PushNode.wrap(rvar, @body)
@body: PushNode.wrap(rvar, @body) if @body
post: if returns then '\n' + @idt() + 'return ' + rvar + ';' else ''
pre: set + @idt() + 'while (' + cond + ')'
return pre + ' null;' + post if not @body
@body: Expressions.wrap([new IfNode(@filter, @body)]) if @filter
pre + ' {\n' + @body.compile(o) + '\n' + @idt() + '}' + post
}