private void EmitVarStatement(NonTerm nonTerm)
{
BaseSymbol varStat;
BaseSymbol expression;
NonTermFactory.GetAssignVarStatement(nonTerm, out varStat, out expression);
if (expression != null)
{
Token varType;
Token varToken;
NonTermFactory.GetVarDecl(varStat, out varType, out varToken);
if (varType.TypeToken == TokenType.ID)
{
_currentOperand = _g.Local(Exp.New(_classesTable[varType.Value]));
_currentOperandTempResult = _g.Local(_currentOperand);
}
else
{
_currentOperand = _g.Local(varType.TypeOf);
_currentOperandTempResult = _g.Local(_currentOperand.Type);
}
if (!(expression is Token))
{
Generate(expression);
_g.Assign(GetOperandValue(varToken.Value, varToken), _currentOperandTempResult);
}
else
{
_g.Assign(GetOperandValue(varToken.Value, varToken), OperandTokenInit(expression, GetOperandValue(varToken.Value, varToken)));
}
}
}
private void AddPreInitLocalVariables(BaseSymbol root)
{
if (root == null)
{
return;
}
if (root.GrammarMember == GrammarMemberType.NonTerm)
{
NonTerm nonTerm = root as NonTerm;
// заносим в список переменные только текущего блока
if (GrammarHelper.BlockVariablesList.Contains(nonTerm.TypeNonTerm))
{
return;
}
switch (nonTerm.TypeNonTerm)
{
case NonTermType.Variable:
case NonTermType.ArrayVariable:
Token typeDeclSimple;
Token idVar;
NonTermFactory.GetVarDecl(nonTerm, out typeDeclSimple, out idVar);
_currentOperand = _g.Local(GetVariableType(typeDeclSimple));
try
{
_localVariablesTable.Add(idVar.Value, _currentOperand);
_currentBlockVariableList.Add(idVar.Value);
}
catch (ArgumentException ex)
{
throw new CodeGenerationException(MessagesHelper.LocalVariableIsAlreadyDefinedEx, idVar.ToStringInfo(), ex);
}
break;
}
}
if (root.GrammarMember == GrammarMemberType.NonTerm)
{
root.Symbols.ForEach(x => AddPreInitLocalVariables(x));
}
}
