public override object VisitParameter_definition([NotNull] scheme_langParser.Parameter_definitionContext context)
{
//Add parameter to scheme
string type = context.variable_type()?.GetText();
string name = context.variable_name()?.GetText();
if (type == null || name == null)
{
return(base.VisitParameter_definition(context));
}
if (CompiledScheme.GetVariableByName(name) != null || CompiledScheme.GetParameterByName(name) != null)
{
Errors.Add(new ErrorDescriptor($"Variable or parameter '{name}' already exists.", context.variable_name()));
}
else if (!VariableManager.IsTypeValid(type, Config))
{
Errors.Add(new ErrorDescriptor($"Type '{type}' is not recognized.", context.variable_type()));
}
else
{
ObjectVariable param = new ObjectVariable(type, name, null);
CompiledScheme.AddParameter(param);
}
return(base.VisitParameter_definition(context));
}
/* CODE BUILDING */
private ObjectVariable CreateVariableFromContext(scheme_langParser.Variable_definitionContext context)
{
string type = context.variable_type().GetText();
string name = context.variable_name().GetText();
object value = null;
if (CompiledScheme.GetVariableByName(name) != null || CompiledScheme.GetParameterByName(name) != null)
{
Errors.Add(new ErrorDescriptor($"Variable or parameter '{name}' already exists.", context));
return(null);
}
return(new ObjectVariable(type, name, value));
}
public override object VisitBody_variable_definition([NotNull] scheme_langParser.Body_variable_definitionContext context)
{
//Add predefined variable to scheme
var variable_definition = context.variable_definition();
string type = variable_definition?.variable_type()?.GetText();
string name = variable_definition?.variable_name()?.GetText();
if (type == null || name == null)
{
return(base.VisitBody_variable_definition(context));
}
if (!VariableManager.IsTypeValid(type, Config))
{
Errors.Add(new ErrorDescriptor($"Type '{type}' is not recognized.", variable_definition.variable_type()));
}
if (CompiledScheme.GetVariableByName(name) != null || CompiledScheme.GetParameterByName(name) != null)
{
Errors.Add(new ErrorDescriptor($"Variable or parameter '{name}' already exists.", variable_definition.variable_name()));
if (variable_definition.EQUALS() != null)
{
SetNewExpression(1);
}
return(base.VisitBody_variable_definition(context));
}
ObjectVariable variable = new ObjectVariable(type, name, null);
if (variable != null)
{
CompiledScheme.AddVariable(variable);
CommandSetVariable cmd = new CommandSetVariable(variable_definition.variable_name().GetText(), GetRegName(0));
currentFunc.AddCommand(cmd);
SetNewExpression(1);
}
return(base.VisitBody_variable_definition(context));
}