protected ObjectDef EmitMultiplicativeExpression(CParser.MultiplicativeExpressionContext multiplicativeExpression)
{
ObjectDef returnObjectDef = null;
if (multiplicativeExpression.castExpression() != null)
{
returnObjectDef = EmitCastExpression(multiplicativeExpression.castExpression());
}
if (multiplicativeExpression.castExpression() != null &&
multiplicativeExpression.multiplicativeExpression() != null)
{
var multiplicativeObj = EmitMultiplicativeExpression(multiplicativeExpression.multiplicativeExpression());
multiplicativeObj.Load();
returnObjectDef.Load();
if (multiplicativeExpression.Star() != null)
{
_generatorIL.Emit(OpCodes.Mul);
}
else if (multiplicativeExpression.Div() != null)
{
_generatorIL.Emit(OpCodes.Div);
}
else if (multiplicativeExpression.Mod() != null)
{
_generatorIL.Emit(OpCodes.Rem);
}
returnObjectDef = LocalObjectDef.AllocateLocal(typeof(int));
}
return(returnObjectDef);
}
protected ObjectDef EmitShiftExpression(CParser.ShiftExpressionContext shiftExpression)
{
ObjectDef returnObjectDef = null;
if (shiftExpression.additiveExpression() != null)
{
returnObjectDef = EmitAdditiveExpression(shiftExpression.additiveExpression());
}
if (shiftExpression.additiveExpression() != null &&
shiftExpression.shiftExpression() != null)
{
var shiftObj = EmitShiftExpression(shiftExpression.shiftExpression());
shiftObj.Load();
returnObjectDef.Load();
if (shiftExpression.LeftShift() != null)
{
_generatorIL.Emit(OpCodes.Shl);
}
else if (shiftExpression.RightShift() != null)
{
_generatorIL.Emit(OpCodes.Shr);
}
returnObjectDef = LocalObjectDef.AllocateLocal(typeof(int));
}
return(returnObjectDef);
}
protected ObjectDef EmitAdditiveExpression(CParser.AdditiveExpressionContext additiveExpression)
{
ObjectDef returnObjectDef = null;
if (additiveExpression.multiplicativeExpression() != null)
{
returnObjectDef = EmitMultiplicativeExpression(additiveExpression.multiplicativeExpression());
}
if (additiveExpression.multiplicativeExpression() != null &&
additiveExpression.additiveExpression() != null)
{
var additiveObj = EmitAdditiveExpression(additiveExpression.additiveExpression());
additiveObj.Load();
returnObjectDef.Load();
if (additiveExpression.Plus() != null)
{
_generatorIL.Emit(OpCodes.Add);
}
else if (additiveExpression.Minus() != null)
{
_generatorIL.Emit(OpCodes.Sub);
}
returnObjectDef = LocalObjectDef.AllocateLocal(typeof(int));
}
return(returnObjectDef);
}
protected ObjectDef EmitEqualityExpression(CParser.EqualityExpressionContext equalityExpression)
{
ObjectDef returnObjectDef = null;
if (equalityExpression.relationalExpression() != null)
{
returnObjectDef = EmitRelationalExpression(equalityExpression.relationalExpression());
}
if (equalityExpression.relationalExpression() != null &&
equalityExpression.equalityExpression() != null)
{
var equalityObj = EmitEqualityExpression(equalityExpression.equalityExpression());
equalityObj.Load();
returnObjectDef.Load();
if (equalityExpression.Equal() != null)
{
_generatorIL.Emit(OpCodes.Ceq);
}
else if (equalityExpression.NotEqual() != null)
{
var zero = new ValueObjectDef(typeof(int), 0);
_generatorIL.Emit(OpCodes.Ceq);
zero.Load();
_generatorIL.Emit(OpCodes.Ceq);
}
returnObjectDef = LocalObjectDef.AllocateLocal(typeof(int));
}
return(returnObjectDef);
}
protected void EmitFunction(
CParser.TypeSpecifierContext typeSpecifier,
ITerminalNode identifier,
CParser.ParameterTypeListContext parameters,
CParser.CompoundStatementContext compoundStatement)
{
var functionName = identifier.ToString();
//CurrentArgs_ = Functions_[CurrentTypeBuilder_.Name][functionName].Args;
_generatorIL = _functions[functionName].MethodBuilder.GetILGenerator();
LocalObjectDef.InitGenerator(_generatorIL);
if (compoundStatement.blockItemList() != null)
{
var returnObjectDef = EmitCompoundStatement(compoundStatement);
returnObjectDef.Load();
if (_functions[functionName].MethodBuilder.ReturnType == typeof(void))
{
_generatorIL.Emit(OpCodes.Pop);
}
_generatorIL.Emit(OpCodes.Ret);
returnObjectDef.Remove();
}
else
{
_generatorIL.Emit(OpCodes.Ret);
}
}
protected ObjectDef EmitAndExpression(CParser.AndExpressionContext andExpression)
{
ObjectDef returnObjectDef = null;
if (andExpression.equalityExpression() != null)
{
returnObjectDef = EmitEqualityExpression(andExpression.equalityExpression());
}
if (andExpression.equalityExpression() != null &&
andExpression.andExpression() != null)
{
var andObj = EmitAndExpression(andExpression.andExpression());
andObj.Load();
returnObjectDef.Load();
_generatorIL.Emit(OpCodes.And);
returnObjectDef = LocalObjectDef.AllocateLocal(typeof(int));
}
return(returnObjectDef);
}
protected ObjectDef EmitExclusiveOrExpression(CParser.ExclusiveOrExpressionContext exclusiveOrExpression)
{
ObjectDef returnObjectDef = null;
if (exclusiveOrExpression.andExpression() != null)
{
returnObjectDef = EmitAndExpression(exclusiveOrExpression.andExpression());
}
if (exclusiveOrExpression.andExpression() != null &&
exclusiveOrExpression.exclusiveOrExpression() != null)
{
var orObj = EmitExclusiveOrExpression(exclusiveOrExpression.exclusiveOrExpression());
orObj.Load();
returnObjectDef.Load();
_generatorIL.Emit(OpCodes.Xor);
returnObjectDef = LocalObjectDef.AllocateLocal(typeof(int));
}
return(returnObjectDef);
}
protected ObjectDef EmitRelationalExpression(CParser.RelationalExpressionContext relationalExpression)
{
ObjectDef returnObjectDef = null;
if (relationalExpression.shiftExpression() != null)
{
returnObjectDef = EmitShiftExpression(relationalExpression.shiftExpression());
}
if (relationalExpression.shiftExpression() != null &&
relationalExpression.relationalExpression() != null)
{
var relationalObj = EmitRelationalExpression(relationalExpression.relationalExpression());
if (relationalExpression.Less() != null)
{
relationalObj.Load();
returnObjectDef.Load();
_generatorIL.Emit(OpCodes.Clt);
}
else if (relationalExpression.LessEqual() != null)
{
ObjectDef less;
ObjectDef equal;
relationalObj.Load();
returnObjectDef.Load();
_generatorIL.Emit(OpCodes.Clt);
less = LocalObjectDef.AllocateLocal(typeof(int));
returnObjectDef.Load();
relationalObj.Load();
_generatorIL.Emit(OpCodes.Ceq);
equal = LocalObjectDef.AllocateLocal(typeof(int));
less.Load();
equal.Load();
_generatorIL.Emit(OpCodes.Or);
}
else if (relationalExpression.Greater() != null)
{
relationalObj.Load();
returnObjectDef.Load();
_generatorIL.Emit(OpCodes.Cgt);
}
else if (relationalExpression.GreaterEqual() != null)
{
ObjectDef greater;
ObjectDef equal;
relationalObj.Load();
returnObjectDef.Load();
_generatorIL.Emit(OpCodes.Cgt);
greater = LocalObjectDef.AllocateLocal(typeof(int));
relationalObj.Load();
returnObjectDef.Load();
_generatorIL.Emit(OpCodes.Ceq);
equal = LocalObjectDef.AllocateLocal(typeof(int));
greater.Load();
equal.Load();
_generatorIL.Emit(OpCodes.Or);
}
returnObjectDef = LocalObjectDef.AllocateLocal(typeof(int));
}
return(returnObjectDef);
}
