self-compiling ranges and expressions
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38d1381c02
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950d1199c2
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@ -311,7 +311,7 @@
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// JavaScript without translation, eg.: strings, numbers, true, false, null...
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LiteralNode = (exports.LiteralNode = inherit(Node, {
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constructor: function constructor(value) {
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this.children = [(this.value = value)];
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this.value = value;
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return this;
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},
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// Break and continue must be treated as statements -- they lose their meaning
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@ -563,12 +563,14 @@
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return this.from_var + ' = ' + this.from.compile(o) + '; ' + this.to_var + ' = ' + this.to.compile(o) + ";\n" + this.idt();
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},
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compile_node: function compile_node(o) {
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var compare, equals, idx, incr, intro, step;
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var compare, equals, idx, incr, intro, step, vars;
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if (!(o.index)) {
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return this.compile_array(o);
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}
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idx = del(o, 'index');
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step = del(o, 'step');
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vars = idx + '=' + this.from_var;
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step = step ? step.compile(o) : '1';
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equals = this.exclusive ? '' : '=';
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intro = '(' + this.from_var + ' <= ' + this.to_var + ' ? ' + idx;
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compare = intro + ' <' + equals + ' ' + this.to_var + ' : ' + idx + ' >' + equals + ' ' + this.to_var + ')';
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@ -583,7 +585,7 @@
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body = Expressions.wrap([new LiteralNode('i')]);
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arr = Expressions.wrap([new ForNode(body, {
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source: (new ValueNode(this))
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}, 'i')
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}, new LiteralNode('i'))
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]);
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return (new ParentheticalNode(new CallNode(new CodeNode([], arr)))).compile(o);
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}
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@ -195,7 +195,7 @@ statement Expressions
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LiteralNode: exports.LiteralNode: inherit Node, {
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constructor: (value) ->
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@children: [@value: value]
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@value: value
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this
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# Break and continue must be treated as statements -- they lose their meaning
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@ -442,6 +442,8 @@ RangeNode: exports.RangeNode: inherit Node, {
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return @compile_array(o) unless o.index
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idx: del o, 'index'
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step: del o, 'step'
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vars: idx + '=' + @from_var
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step: if step then step.compile(o) else '1'
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equals: if @exclusive then '' else '='
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intro: '(' + @from_var + ' <= ' + @to_var + ' ? ' + idx
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compare: intro + ' <' + equals + ' ' + @to_var + ' : ' + idx + ' >' + equals + ' ' + @to_var + ')'
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@ -453,7 +455,7 @@ RangeNode: exports.RangeNode: inherit Node, {
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# TODO: This generates pretty ugly code ... shrink it.
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compile_array: (o) ->
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body: Expressions.wrap([new LiteralNode('i')])
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arr: Expressions.wrap([new ForNode(body, {source: (new ValueNode(this))}, 'i')])
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arr: Expressions.wrap([new ForNode(body, {source: (new ValueNode(this))}, new LiteralNode('i'))])
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(new ParentheticalNode(new CallNode(new CodeNode([], arr)))).compile(o)
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}
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