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  package org.jruby.runtime.scope;
  
This is a DynamicScope that does not support any variables.
  
 public class NoVarsDynamicScope extends DynamicScope {
     private static final int SIZE = 0;
     private static final String SIZE_ERROR = "NoVarsDynamicScope only supports scopes with one variable";
     private static final String GROW_ERROR = "NoVarsDynamicScope cannot be grown; use ManyVarsDynamicScope";
     
     public NoVarsDynamicScope(StaticScope staticScopeDynamicScope parent) {
         super(staticScopeparent);
     }
 
     public NoVarsDynamicScope(StaticScope staticScope) {
         super(staticScope);
     }
     
     public void growIfNeeded() {
         growIfNeeded();
     }
 
     protected void growIfNeeded(int sizeString message) {
         if (.getNumberOfVariables() != size) {
             throw new RuntimeException(message);
         }
     }
     
     public DynamicScope cloneScope() {
         return new NoVarsDynamicScope();
     }
 
     public IRubyObject[] getValues() {
         return .;
     }
    
    
Get value from current scope or one of its captured scopes. FIXME: block variables are not getting primed to nil so we need to null check those until we prime them properly. Also add assert back in.

Parameters:
offset zero-indexed value that represents where variable lives
depth how many captured scopes down this variable should be set
Returns:
the value here
 
     public IRubyObject getValue(int offsetint depth) {
         assert depth != 0: ;
         return .getValue(offsetdepth - 1);
     }
    
    
Variation of getValue that checks for nulls, returning and setting the given value (presumably nil)
 
     public IRubyObject getValueOrNil(int offsetint depthIRubyObject nil) {
         return .getValueOrNil(offsetdepth - 1, nil);
     }
     
     public IRubyObject getValueDepthZeroOrNil(int offsetIRubyObject nil) {
         throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with any variables");
     }
         throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with one or more variables");
     }
         throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with two or more variables");
     }
         throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with three or more variables");
     }
         throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with four or more variables");
     }

    
Set value in current dynamic scope or one of its captured scopes.

Parameters:
offset zero-indexed value that represents where variable lives
value to set
depth how many captured scopes down this variable should be set
 
     public IRubyObject setValue(int offsetIRubyObject valueint depth) {
         return .setValue(offsetvaluedepth - 1);
     }
 
     public IRubyObject setValueDepthZero(IRubyObject valueint offset) {
         throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with any variables");
     }
     public IRubyObject setValueZeroDepthZero(IRubyObject value) {
         throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with one or more variables");
     }
     public IRubyObject setValueOneDepthZero(IRubyObject value) {
         throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with two or more variables");
     }
     public IRubyObject setValueTwoDepthZero(IRubyObject value) {
        throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with three or more variables");
    }
        throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with four or more variables");
    }

    
Set all values which represent 'normal' parameters in a call list to this dynamic scope. Function calls bind to local scopes by assuming that the indexes or the arg list correspond to that of the local scope (plus 2 since $_ and $~ always take the first two slots). We pass in a second argument because we sometimes get more values than we are expecting. The rest get compacted by original caller into rest args.

Parameters:
values up to size specified to be mapped as ordinary parm values
size is the number of values to assign as ordinary parm values
    public void setArgValues(IRubyObject[] valuesint size) {
        assert size <=  : this.getClass().getSimpleName() + " does not support scopes with " + size + " variables";
    }
    
    public void setArgValues(IRubyObject arg0) {
        throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with 1 variable");
    }
    
    public void setArgValues(IRubyObject arg0IRubyObject arg1) {
        throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with 2 variables");
    }
    
    public void setArgValues(IRubyObject arg0IRubyObject arg1IRubyObject arg2) {
        throw new RuntimeException(this.getClass().getSimpleName() + " does not support scopes with 3 variables");
    }
    public void setEndArgValues(IRubyObject[] valuesint indexint size) {
        assert false : this.getClass().getSimpleName() + " does not support any variables";
    }
    @Override
    public IRubyObject[] getArgValues() {
        // if we're not the "argument scope" for zsuper, try our parent
        if (!.isArgumentScope()) {
            return .getArgValues();
        }
        int totalArgs = .getRequiredArgs() + .getOptionalArgs();
        assert totalArgs == 0 : this.getClass().getSimpleName() + " only supports scopes with no variables";
        
        return .;
    }
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