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interpreter [2012/10/16 21:16]
will
interpreter [2015/06/01 16:08] (current)
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-====== Interpreter ====== +====== ​Javascript ​Interpreter ====== 
-The Javascript interpreter used to run the algorithms on this wiki is a highly modified versions of the [[https://​github.com/​mozilla/​narcissus|Narcissus]] Javascript interpreter.+The Javascript interpreter used to run the algorithms on this wiki is a fully reversible, standards-compliant,​ meta-circular Javascript interpreter. As well as running in the browser and allowing algorithms to be visualised, it can run code both forwards and backwards in time. It is written in [[continuation passing style]], so that the interpretation can be paused and controlled by the user.
  
-It currently passes 93% of the [[http://test262.ecmascript.org|ECMAScript Language test262]] test suite.+Based on [[https://github.com/​mozilla/​narcissus|Narcissus]].
  
-^                                             ^ Passes ^ Total ^   % ^ +===== ES5.1 Compliance ===== 
-| Ch06 Notational Conventions ​                ​| ​   1 |    1 |  100.00+It currently passes 99of the [[http://​test262.ecmascript.org|ECMAScript Language test262]] test suite
-| Ch07 Lexical Conventions ​                   |  594 |  715 |  83.08% | + 
-| Ch08 Types                                  |  175 |  182 |  96.15% | +===== Reversibility ===== 
-| Ch09 Type Conversion ​and Testing ​           |  128 |  128 |  100.00% | +And can optionally be run in a reversible mode, where state changes are recorded so that they can be undone. This allows much more informative visualisations ​and interaction,​ at the cost of running slightly slower ​and a bit more memory
-| Ch10 Executable Code and Execution Contexts |  232 |  377 |  61.54% | + 
-| Ch11 Expressions ​                           |  1177 |  1320 |  89.17% | +In reversible mode almost all state changes can be undoneSome state changes such as ''​Object.freeze()''​ and ''​Object.seal()''​ are not reversible at the moment as the interpreter uses the browser'​s Javascript objects and the effects of these functions are permanent.
-| Ch12 Statements ​                            ​| ​ 470 |  521 |  90.21% | +
-| Ch13 Function Definition ​                   |  152 |  230 |  66.09% | +
-| Ch14 Program ​                               |   12 |   24 |  50.00% | +
-| Ch15 Standard Built-in ECMAScript Objects ​  ​| ​ 7892 |  8074 |  97.75% | +
-+
-| Totals ​                                     |  10833 |  11572 |  93.61% ​ |+
  
-A lot of the failures currently are due to not handling "​strict"​ code. 
interpreter.1350447374.txt.gz · Last modified: 2015/02/02 08:24 (external edit)