public CmsCodeGenerator(TopDownParser parser, string input)
{
_parser = parser;
_input = input;
Codes = new List <CmsCode>();
Tokenization = new TopDownTokenization(_parser.NonTerminals, input);
VariableArea = new Dictionary <string, CmsCode>();
StopReference = new CmsCode(0X0000);
TokenStack = new Stack <Token>();
AttributionTokenStack = new Stack <Token>();
JFCodeReferenceStack = new Stack <CmsCodeReference>();
StartWhileCodeReference = new Stack <CmsCodeReference>();
RepeatReferenceStack = new Stack <CmsCode>();
}
public void Handler(CmsCodeGenerator generator)
{
var startWhileReference = new CmsCode(generator.CodesLengh);
var expressionStatmentHandler = new ExpressionStatmentHandler();
expressionStatmentHandler.Handler(generator);
var cmsCodeReference = (CmsCodeReference)CmsCodeFactory.JF(new CmsCode(0X00));
generator.JFCodeReferenceStack.Push(cmsCodeReference);
generator.AddCode(cmsCodeReference);
var commeBackWhile = (CmsCodeReference)CmsCodeFactory.JMP(startWhileReference);
generator.StartWhileCodeReference.Push(commeBackWhile);
generator.GeneratorState = TinyCodeGeneratorState.Initial;
}
private void GenerateVariableArea()
{
Token = Tokenization.GetTokenIgnoreSpace();
var jmpReference = new CmsCode(0X00);
var jmp = CmsCodeFactory.JMP(jmpReference);
AddCode(jmp);
while (Token != null && !Token.IsBegin())
{
if (Token.IsVar())
{
Token = Tokenization.GetTokenIgnoreSpace();
VariableArea.Add(Token.Value, new CmsCode(CodesLengh));
Malock();
}
Token = Tokenization.GetTokenIgnoreSpace();
}
jmpReference.ValueDecimal = CodesLengh;
}
public void AddCode(CmsCode code)
{
Codes.Add(code);
IncrementStopReference();
}
public LDICode(CmsCode reference) : base(Instruction.LDI, 0X44, reference, "X2")
{
}
public ADICode(CmsCode reference) : base(Instruction.ADI, 0X14, reference, "X2")
{
}
public LODCode(CmsCode reference) : base(Instruction.LOD, 0X40, reference)
{
}
public JMPCode(CmsCode reference) : base(Instruction.JMP, 0X5A, reference)
{
}
public static CmsCode ADI(CmsCode reference) => new ADICode(reference);
public static CmsCode JMP(CmsCode reference) => new JMPCode(reference);
public static CmsCode LSP(CmsCode reference) => new LSPCode(reference);
public static CmsCode JF(CmsCode reference) => new JFCode(reference);
public static CmsCode STO(CmsCode reference) => new STOCode(reference);
public static CmsCode LOD(CmsCode reference) => new LODCode(reference);
public void Handler(CmsCodeGenerator generator)
{
try
{
CmsCode compReference = null;
ExpressionStatmentState = CmsCodeExpressionStatmentState.Initial;
generator.MoveNextToken();
while (!(generator.Token is ThenToken || generator.Token is DoToken || generator.Token is SemiColonToken || generator.Token is EndToken))
{
switch (ExpressionStatmentState)
{
case CmsCodeExpressionStatmentState.Initial:
HandleInitial(generator);
break;
case CmsCodeExpressionStatmentState.Adress:
generator.AddCode(CmsCodeFactory.LOD(generator.VariableArea[generator.Token.Value]));
if (compReference != null)
{
generator.AddCode(compReference);
}
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.Number:
generator.AddCode(CmsCodeFactory.LDI(new CmsCode(int.Parse(generator.Token.Value))));
if (compReference != null)
{
generator.AddCode(compReference);
}
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.GreatThen:
compReference = CmsCodeFactory.GT;
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.LessThen:
compReference = CmsCodeFactory.LT;
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.EqualsThen:
compReference = CmsCodeFactory.EQ;
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.GreatEqualThen:
compReference = CmsCodeFactory.GE;
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.LessEqualThen:
compReference = CmsCodeFactory.LE;
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.NotEqualsThen:
compReference = CmsCodeFactory.NE;
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.Plus:
generator.MoveNextToken();
generator.AddCode(CmsCodeFactory.ADI(new CmsCode(int.Parse(generator.Token.Value))));
GoToInitialIfState(generator);
break;
case CmsCodeExpressionStatmentState.Sub:
compReference = CmsCodeFactory.SUI;
GoToInitialIfState(generator);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
catch (Exception e)
{
throw new Exception($"Token: {generator.Token}\nTokenStack: {generator.Stack}\nError: {e.Message}", e);
}
}
public STOCode(CmsCode reference) : base(Instruction.STO, 0X41, reference)
{
}
public LSPCode(CmsCode reference) : base(Instruction.LSP, 0X4F, reference, "X2", true)
{
}
