static Scope()
{
globalVariables = new Dictionary<string, SLValue>();
for(int i=0; i<200; i++)
{
globalVariables["R" + i] = new SLValue(default(double));
}
}
public void assign(String var, SLValue value)
{
if (resolve(var) != null)
{
// There is already such a variable, re-assign it
this.reAssign(var, value);
}
else
{
// A newly declared variable
variables[var] = value;
}
}
private void reAssign(String identifier, SLValue value)
{
if (variables.ContainsKey(identifier))
{
// The variable is declared in this scope
variables[identifier] = value;
}
else if (_parent != null)
{
// The variable was not declared in this scope, so let
// the parent scope re-assign it
_parent.reAssign(identifier, value);
}
}
public SLValue Invoke(String functionName, List <ExpressionContext> param, int countArgs, Dictionary <String, Function> functions, Scope scope, StringBuilder gcodeBuffer)
{
if (countArgs != this._param.Count)
{
throw new Exception("Illegal Function call");
}
Scope scopeNext = new Scope(null); // create function scope
EvalVisitor evalVisitor = new EvalVisitor(scope, functions, null);
for (int i = 0; i < param.Count; i++)
{
if (param[i].ChildCount > 0)
{
SLValue value = evalVisitor.Visit(param[i]);
scopeNext.assignParam(this._param[i].GetText(), value);
}
else
{
SLValue value = scopeNext.GetDefaultValue(this._paramType[i].GetText());
scopeNext.assignParam(this._param[i].GetText(), value);
}
}
EvalVisitor evalVistorNext = new EvalVisitor(scopeNext, functions, gcodeBuffer);
SLValue ret = SLValue.VOID;
try
{
evalVistorNext.Visit(this.block);
}
catch (ReturnValue returnValue)
{
ret = returnValue.value;
}
catch (Exception ex)
{
throw new Exception($"Illegal Function {functionName} call");
}
return(ret);
}
public SLValue InvokeWithoutArgs(String functionName, Dictionary <String, Function> functions, Scope scope, StringBuilder gcodeBuffer)
{
Scope scopeNext = new Scope(scope);
EvalVisitor evalVistorNext = new EvalVisitor(scopeNext, functions, gcodeBuffer);
SLValue ret = SLValue.VOID;
try
{
evalVistorNext.Visit(this.block);
}
catch (ReturnValue returnValue)
{
ret = returnValue.value;
}
catch (Exception ex)
{
throw new Exception($"Illegal Function {functionName} call");
}
return(ret);
}
public void GlobalAssign(String var, SLValue value)
{
globalVariables[var] = value;
}
public void assignParam(String var, SLValue value)
{
variables[var] = value;
}