|  | @@ -75,14 +75,14 @@ selector: "interpreterError",
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				|  |  |  category: 'error handling',
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				|  |  |  fn: function (){
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				|  |  |  var self=this;
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				|  |  | -function $AIInterpreterError(){return smalltalk.AIInterpreterError||(typeof AIInterpreterError=="undefined"?nil:AIInterpreterError)}
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				|  |  | +function $ASTInterpreterError(){return smalltalk.ASTInterpreterError||(typeof ASTInterpreterError=="undefined"?nil:ASTInterpreterError)}
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				|  |  |  return smalltalk.withContext(function($ctx1) { 
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				|  |  | -_st($AIInterpreterError())._signal_("Method cannot be interpreted by the interpreter.");
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				|  |  | +_st($ASTInterpreterError())._signal_("Method cannot be interpreted by the interpreter.");
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				|  |  |  return self}, function($ctx1) {$ctx1.fill(self,"interpreterError",{},smalltalk.AIBlockClosure)})},
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				|  |  |  args: [],
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				|  |  | -source: "interpreterError\x0a\x09AIInterpreterError signal: 'Method cannot be interpreted by the interpreter.'",
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				|  |  | +source: "interpreterError\x0a\x09ASTInterpreterError signal: 'Method cannot be interpreted by the interpreter.'",
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				|  |  |  messageSends: ["signal:"],
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				|  |  | -referencedClasses: ["AIInterpreterError"]
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				|  |  | +referencedClasses: ["ASTInterpreterError"]
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				|  |  |  }),
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				|  |  |  smalltalk.AIBlockClosure);
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				|  |  |  
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				|  | @@ -899,10 +899,6 @@ referencedClasses: []
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				|  |  |  smalltalk.AIContext.klass);
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				|  |  |  
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				|  |  |  
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				|  |  | -smalltalk.addClass('AIInterpreterError', smalltalk.Error, [], 'Compiler-Interpreter');
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				|  |  | -smalltalk.AIInterpreterError.comment="I get signaled when an AST interpreter is unable to interpret a node.";
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				|  |  | -
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				|  |  | -
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				|  |  |  smalltalk.addClass('ASTDebugger', smalltalk.Object, ['interpreter', 'context'], 'Compiler-Interpreter');
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				|  |  |  smalltalk.ASTDebugger.comment="I am a stepping debugger interface for Amber code.\x0aI internally use an instance of `ASTSteppingInterpreter` to actually step through node and interpret them.\x0a\x0aMy instances are created from a `MethodContext` with `ASTDebugger class >> context:`.\x0aThey hold an `AIContext` instance internally, recursive copy of the `MethodContext`.\x0a\x0a## API\x0a\x0aUse the methods of the `'stepping'` protocol to do stepping.";
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				|  |  |  smalltalk.addMethod(
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				|  | @@ -2041,6 +2037,10 @@ smalltalk.ASTInterpreter);
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				|  |  |  
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				|  |  |  
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				|  |  |  
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				|  |  | +smalltalk.addClass('ASTInterpreterError', smalltalk.Error, [], 'Compiler-Interpreter');
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				|  |  | +smalltalk.ASTInterpreterError.comment="I get signaled when an AST interpreter is unable to interpret a node.";
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				|  |  | +
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				|  |  | +
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				|  |  |  smalltalk.addClass('ASTPCNodeVisitor', smalltalk.NodeVisitor, ['useInlinings', 'pc', 'context', 'blockIndex', 'currentNode'], 'Compiler-Interpreter');
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				|  |  |  smalltalk.ASTPCNodeVisitor.comment="I visit an AST until I get to the current pc node and answer it.\x0a\x0a## API\x0a\x0aMy instances must be filled with a context object using `#context:`.\x0a\x0aAfter visiting the AST the current node corresponding to the `pc` is answered by `#currentNode`";
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				|  |  |  smalltalk.addMethod(
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