private void GenExpr(Expr expr, System.Type expectedType)
{
System.Type deliveredType;
if (expr is StringLiteral)
{
deliveredType = typeof(string);
this.il.Emit(Emit.OpCodes.Ldstr, ((StringLiteral)expr).Value);
}
else if (expr is IntLiteral)
{
deliveredType = typeof(int);
this.il.Emit(Emit.OpCodes.Ldc_I4, ((IntLiteral)expr).Value);
}
else if (expr is Variable)
{
string ident = ((Variable)expr).Ident;
deliveredType = this.TypeOfExpr(expr);
if (!this.symbolTable.ContainsKey(ident))
{
throw new System.Exception("variable no declarada '" + ident + "'");
}
this.il.Emit(Emit.OpCodes.Ldloc, this.symbolTable[ident]);
}
//*********************
else if (expr is BinExpr)
{
Simple_Compiler.PolInv polInv = new Simple_Compiler.PolInv((BinExpr)expr);
polInv.calcularPolaca();
foreach (object temp in polInv.Salida)
{
if (temp is BinOp)
{
genCodOp((BinOp)temp);
}
else
{
genCod((Expr)temp);
}
}
deliveredType = this.TypeOfExpr(expr);
}
//*********************
else
{
throw new System.Exception("no se puede generar la expresion " + expr.GetType().Name);
}
if (deliveredType != expectedType)
{
if (deliveredType == typeof(int) &&
expectedType == typeof(string))
{
this.il.Emit(Emit.OpCodes.Box, typeof(int));
this.il.Emit(Emit.OpCodes.Callvirt, typeof(object).GetMethod("ToString"));
}
else
{
throw new System.Exception("no se puede convertir de " + deliveredType.Name + " a un " + expectedType.Name);
}
}
}
private void GenExpr(Expr expr, System.Type expectedType)
{
System.Type deliveredType;
if (expr is StringLiteral)
{
deliveredType = typeof(string);
this.il.Emit(Emit.OpCodes.Ldstr, ((StringLiteral)expr).Value);
}
else if (expr is IntLiteral)
{
deliveredType = typeof(int);
this.il.Emit(Emit.OpCodes.Ldc_I4, ((IntLiteral)expr).Value);
}
else if (expr is Variable)
{
string ident = ((Variable)expr).Ident;
deliveredType = this.TypeOfExpr(expr);
if (!this.symbolTable.ContainsKey(ident))
{
throw new System.Exception("variable no declarada '" + ident + "'");
}
this.il.Emit(Emit.OpCodes.Ldloc, this.symbolTable[ident]);
}
//*********************
else if (expr is BinExpr)
{
Simple_Compiler.PolInv polInv = new Simple_Compiler.PolInv((BinExpr)expr);
polInv.calcularPolaca();
foreach (object temp in polInv.Salida)
{
if (temp is BinOp)
genCodOp((BinOp)temp);
else
genCod((Expr)temp);
}
deliveredType = this.TypeOfExpr(expr);
}
//*********************
else
{
throw new System.Exception("no se puede generar la expresion " + expr.GetType().Name);
}
if (deliveredType != expectedType)
{
if (deliveredType == typeof(int) &&
expectedType == typeof(string))
{
this.il.Emit(Emit.OpCodes.Box, typeof(int));
this.il.Emit(Emit.OpCodes.Callvirt, typeof(object).GetMethod("ToString"));
}
else
{
throw new System.Exception("no se puede convertir de " + deliveredType.Name + " a un " + expectedType.Name);
}
}
}
