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caching the length property lookup for vanilla array comprehensions and rebuilding docs

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This commit is contained in:
Jeremy Ashkenas
2010-02-25 23:39:14 -05:00
parent 5c7526a741
commit d2d5f649d3
13 changed files with 154 additions and 149 deletions
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8
src/nodes.coffee
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@@ -447,7 +447,7 @@ RangeNode: exports.RangeNode: inherit BaseNode, {
return @compile_array(o) unless o.index
idx: del o, 'index'
step: del o, 'step'
vars: idx + '=' + @from_var
vars: idx + ' = ' + @from_var
step: if step then step.compile(o) else '1'
equals: if @exclusive then '' else '='
intro: '(' + @from_var + ' <= ' + @to_var + ' ? ' + idx
@@ -922,9 +922,11 @@ ForNode: exports.ForNode: inherit BaseNode, {
else
index_var: null
source_part: svar + ' = ' + @source.compile(o) + ';\n' + @idt()
step_part: if @step then ivar + ' += ' + @step.compile(o) else ivar + '++'
for_part: ivar + ' = 0; ' + ivar + ' < ' + svar + '.length; ' + step_part
var_part: body_dent + name + ' = ' + svar + '[' + ivar + '];\n' if name
if not @object
lvar: scope.free_variable()
step_part: if @step then ivar + ' += ' + @step.compile(o) else ivar + '++'
for_part: ivar + ' = 0, ' + lvar + ' = ' + svar + '.length; ' + ivar + ' < ' + lvar + '; ' + step_part
set_result: if rvar then @idt() + rvar + ' = []; ' else @idt()
return_result: rvar or ''
body: ClosureNode.wrap(body, true) if top_level and @contains (n) -> n instanceof CodeNode