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self-compiler: handles try/catch/finally blocks

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This commit is contained in:
Jeremy Ashkenas
2010-02-10 18:33:03 -05:00
parent 76dac9c09c
commit 4e7408dc25
5 changed files with 220 additions and 183 deletions
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20
src/nodes.coffee
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@@ -805,7 +805,25 @@ OpNode: exports.OpNode: inherit Node, {
}
# A try/catch/finally block.
TryNode: exports.TryNode: inherit Node, {
constructor: (attempt, error, recovery, ensure) ->
@children: [@attempt: attempt, @recovery: recovery, @ensure: ensure]
@error: error
this
compile_node: (o) ->
o.indent: @idt(1)
o.top: true
error_part: if @error then ' (' + @error.compile(o) + ') ' else ' '
catch_part: (@recovery or '') and ' catch' + error_part + '{\n' + @recovery.compile(o) + '\n' + @idt() + '}'
finally_part: (@ensure or '') and ' finally {\n' + @ensure.compile(merge(o, {returns: null})) + '\n' + @idt() + '}'
@idt() + 'try {\n' + @attempt.compile(o) + '\n' + @idt() + '}' + catch_part + finally_part
}
statement TryNode