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ExpUtils.cs
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ExpUtils.cs
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using System;
using System.Collections;
using System.Collections.Generic;
using Emit = System.Reflection.Emit;
public class ExpUtils
{
private Symboltable symtab;
private Errors err;
public ExpUtils()
{
symtab = Symboltable.Instance;
err = Errors.Instance;
}
public bool hasToGenOrLabel (ArrayList list)
{
foreach (Expr e in list)
if (e is ORExpresion)
return true;
return false;
}
public bool hasToGenAndLabel (ArrayList list)
{
foreach (Expr e in list)
if (e is ANDExpresion)
return true;
return false;
}
private bool hasAndOrNotExpression (ArrayList list)
{
foreach (Expr e in list)
if (e is ORExpresion || e is ANDExpresion || e is NOTExpresion)
return true;
return false;
}
private Expr ReturnOppositeExpression (Expr e, string proc_actual, uint scope)
{
if (e is GEExpresion)
{
LTExpresion ex = new LTExpresion();
return ex;
}
else if (e is GTExpresion)
{
LEExpresion ex= new LEExpresion();
return ex;
}
else if (e is LTExpresion)
{
GEExpresion ex = new GEExpresion();
return ex;
}
else if (e is LEExpresion)
{
GTExpresion ex = new GTExpresion();
return ex;
}
else if (e is EQExpresion)
{
DFExpresion ex = new DFExpresion();
return ex;
}
else if (e is DFExpresion)
{
EQExpresion ex = new EQExpresion();
return ex;
}
else if (e is BoolLiteral)
{
BoolLiteral b = (BoolLiteral)e;
if (b.Value == "true")
b.Value = "false";
else
b.Value = "true";
return b;
}
else if (e is Variable)
{
int tipo = 0;
Variable b = (Variable)e;
Symbol s;
if (scope == 0)
s = symtab.getSymbol(b.Value);
else
s = symtab.getSymbol(proc_actual, b.Value, ref tipo);
if (s != null)
{
if (s.Type.toString() == "BOOLEAN")
{
b.Tipo = "NOT"; /* marcamos diferente para saber que hay un not */
}
}
return b;
}
else
return e;
return null;
}
private void ReorderWHILEExpression (ArrayList list, string proc_actual, uint scope)
{
ArrayList aux = (ArrayList)list.Clone();
if (this.hasAndOrNotExpression(list))
{
int i = 0;
foreach (Expr e in aux)
{
//TODO: Por separado funcionan ahora hay que ver con los NOTs en derecha e izda!!
if (e is ANDExpresion)
{
Expr a = ReturnOppositeExpression((Expr)aux[i + 1], proc_actual, scope);
Expr b = (Expr)aux[i - 1];
Expr c = (Expr)aux[i - 2];
/* Console.WriteLine("A : "+ a);
Console.WriteLine("B : "+ b);
Console.WriteLine("C : "+ c);
*/
if (!(a is NOTExpresion))
{
if (c is NOTExpresion)
{
list.RemoveAt(i);
list.RemoveAt(i-1);
list.RemoveAt(i-2);
list.Insert(i-2, a);
list.Insert(i-2, b);
}
else
{
if (b is NOTExpresion)
{
list.RemoveAt(i);
list.RemoveAt(i-1);
list.RemoveAt(i-2);
list.Insert(i-2,c);
list.Insert(i-2,a);
}
else
{
list.RemoveAt(i);
list.RemoveAt(i);
list.RemoveAt(i-1);
list.Insert(i-1,b);
list.Insert(i-1,a);
}
}
}
else
{
list.RemoveAt(i);
list.RemoveAt(i-1);
list.RemoveAt(i-2);
list.Insert(i-2,c);
list.Insert(i-2,b);
}
}
else if (e is ORExpresion)
{
Expr a = (Expr)aux[i-1];
Expr b = (Expr)aux[i+1];
list.RemoveAt(i);
list.RemoveAt(i);
list.RemoveAt(i-1);
list.Insert(i-1,a);
list.Insert(i-1,b);
}
else if (e is NOTExpresion)
{
Expr a = ReturnOppositeExpression((Expr)aux[i-1], proc_actual, scope);
if (a is Variable)
{
Variable var = (Variable)a;
if (var.Tipo == "NOT")
list.RemoveAt(i);
else
{
Expr b = ReturnOppositeExpression((Expr)aux[i+2], proc_actual, scope);
list.RemoveAt(i);
list.RemoveAt(i+1);
list.Insert(i+1, b);
}
}
}
i++;
}
}
}
private void ReorderIFExpression (ArrayList list, string proc_actual, uint scope)
{
ArrayList aux = (ArrayList)list.Clone();
if (this.hasAndOrNotExpression(list))
{
int i = 0;
foreach (Expr e in aux)
{
if (e is ANDExpresion)
{
Expr a = (Expr)aux[i - 1];
Expr b = (Expr)aux[i + 1];
Expr c = (Expr)aux[i - 2];
if (!(a is NOTExpresion))
{
if (c is NOTExpresion)
{
list.RemoveAt(i);
list.RemoveAt(i-1);
list.RemoveAt(i-2);
list.Insert(i-2, a);
list.Insert(i-2, b);
}
else
{
list.RemoveAt(i);
list.RemoveAt(i);
list.RemoveAt(i-1);
list.Insert(i-1, a);
list.Insert(i-1, b);
}
}
else
{
list.RemoveAt(i);
list.RemoveAt(i-1);
list.RemoveAt(i-2);
list.Insert(i-2, c);
list.Insert(i-2, b);
}
}
else if (e is ORExpresion)
{
Expr a = (Expr)aux[i - 1];
Expr c = ReturnOppositeExpression((Expr)aux[i+1], proc_actual, scope);
Expr d = (Expr)aux[i-2];
if (!(a is NOTExpresion))
{
if (d is NOTExpresion)
{
list.RemoveAt(i);
list.RemoveAt(i-1);
list.RemoveAt(i-2);
list.Insert(i-2, a);
list.Insert(i-2, c);
}
else
{
list.RemoveAt(i);
list.RemoveAt(i);
list.RemoveAt(i-1);
list.Insert(i-1, a);
list.Insert(i-1, c);
}
}
else
{
list.RemoveAt(i);
list.RemoveAt(i-1);
list.RemoveAt(i-2);
list.Insert(i-2, d);
list.Insert(i-2, c);
}
}
else if (e is NOTExpresion)
{
Expr a = ReturnOppositeExpression((Expr)aux[i-1], proc_actual, scope);
if (a is Variable)
{
Variable var = (Variable)a;
if (var.Tipo == "NOT")
list.RemoveAt(i);
else
{
Expr b = ReturnOppositeExpression((Expr)aux[i+2], proc_actual, scope);
list.RemoveAt(i);
list.RemoveAt(i+1);
list.Insert(i+1, b);
}
}
else if (a is BoolLiteral)
{
list.RemoveAt(i);
list.RemoveAt(i-1);
list.Insert(i-1, a);
}
}
i++;
}
}
}
public void genAritExpresion (ILCodeGen cg, ArrayList exp, uint scope,
string proc_actual, string store)
{
int tipo = 0;
Symbol s = null;
foreach (Expr e in exp)
{
if (e is IntLiteral)
{
IntLiteral lit = (IntLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.INT,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is RealLiteral)
{
RealLiteral lit = (RealLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.REAL,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is BoolLiteral)
{
BoolLiteral lit = (BoolLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.BOOLEAN,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is StringLiteral)
{
StringLiteral lit = (StringLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.STRING,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is CharLiteral)
{
CharLiteral lit = (CharLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.CHAR,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is Variable)
{
Variable var = (Variable)e;
if (scope == 0)
s = symtab.getSymbol(var.Value);
else
s = symtab.getSymbol(proc_actual, var.Value, ref tipo);
if (s != null)
{
if (tipo == 1)
{
Param p = (Param)s;
cg.loadVariable(s, p.Reference, scope, proc_actual);
}
else
cg.loadVariable(s, false, scope, proc_actual);
}
tipo = 0;
}
else if (e is Function)
{
ExpFunction ex = (ExpFunction)e;
if (scope == 0)
s = symtab.find(store);
else
s = symtab.getSymbol(proc_actual, store, ref tipo);
if (s != null)
{
if (s.Type.toString() != ex.Tipo)
throw new fpc2ilException("Cannot assing type " + ex.Tipo + " to variable '" + s.Name + "' (" +
s.Type.toString() + ")");
}
tipo = 0;
}
else if (e is PlusExpresion)
{
cg.genSuma();
}
else if (e is MinusExpresion)
{
cg.genResta();
}
else if (e is ProductoExpresion)
{
cg.genMult();
}
else if (e is DivisionExpresion)
{
cg.genDivision();
}
else if (e is DIVExpresion)
{
cg.genDivision();
}
else if (e is MODExpresion)
{
cg.genMod();
}
}
/* Una vez estan generados todos los loads generamos el store */
if (scope == 0)
s = symtab.getSymbol(store);
else
s = symtab.getSymbol(proc_actual, store, ref tipo);
if (s != null)
{
if (tipo == 1)
{
Param p = (Param)s;
cg.storeVariable (s, p.Reference, scope, proc_actual);
}
else
{
/* TODO: Si es una variable de retorno de funcion de momento no hacemos nada */
if (s.Name != proc_actual)
cg.storeVariable (s, false, scope, proc_actual);
}
}
}
public void genWhileExpresion (ILCodeGen cg, ArrayList exp, uint scope, string proc_actual,
Emit.Label ini, Emit.Label body, Emit.Label fin)
{
int tipo = 0;
Symbol s = null;
bool hasAnd = hasToGenAndLabel(exp);
bool hasAnd2 = hasAnd;
ReorderWHILEExpression(exp, proc_actual, scope);
cg.MarkLabel(ini);
foreach (Expr e in exp)
{
//Console.WriteLine(e);
if (e is IntLiteral)
{
IntLiteral lit = (IntLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.INT,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is RealLiteral)
{
RealLiteral lit = (RealLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.REAL,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is BoolLiteral)
{
BoolLiteral lit = (BoolLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.BOOLEAN,0,null);
cg.loadVariable(s, false, scope, proc_actual);
if (hasAnd)
{
if (lit.Value == "true")
cg.genFalseStatement(fin);
else
cg.genFalseStatement(fin);
}
else
{
if (hasAnd2)
{
if (lit.Value == "true")
cg.genTrueStatement(body);
else
cg.genFalseStatement(fin);
}
else
{
if (lit.Value == "true")
cg.genTrueStatement(body);
else
cg.genFalseStatement(body);
}
hasAnd2 = false;
}
hasAnd = false;
}
else if (e is StringLiteral)
{
StringLiteral lit = (StringLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.STRING,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is CharLiteral)
{
CharLiteral lit = (CharLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.CHAR,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is Variable)
{
Variable var = (Variable)e;
if (scope == 0)
s = symtab.getSymbol(var.Value);
else
s = symtab.getSymbol(proc_actual, var.Value, ref tipo);
if (s != null)
{
if (tipo == 1)
{
Param p = (Param)s;
cg.loadVariable(s, p.Reference, scope, proc_actual);
}
else
cg.loadVariable(s, false, scope, proc_actual);
}
tipo = 0;
if (s.Type.toString() == "BOOLEAN")
{
if (var.Tipo == "NOT")
cg.genTrueStatement(fin);
else
cg.genFalseStatement(fin);
hasAnd = false;
}
}
else if (e is Function)
{
ExpFunction ex = (ExpFunction)e;
}
else if (e is EQExpresion)
{
if (hasAnd)
cg.genEQStatement(fin);
else
cg.genEQStatement(body);
hasAnd = false;
}
else if (e is DFExpresion)
{
if (hasAnd)
cg.genDFStatement(fin);
else
cg.genDFStatement(body);
hasAnd = false;
}
else if (e is GEExpresion)
{
if (hasAnd)
cg.genGEStatement(fin);
else
cg.genGEStatement(body);
hasAnd = false;
}
else if (e is GTExpresion)
{
if (hasAnd)
cg.genGTStatement(fin);
else
cg.genGTStatement(body);
hasAnd = false;
}
else if (e is LEExpresion)
{
if (hasAnd)
cg.genLEStatement(fin);
else
cg.genLEStatement(body);
hasAnd = false;
}
else if (e is LTExpresion)
{
if (hasAnd)
cg.genLTStatement(fin);
else
cg.genLTStatement(body);
hasAnd = false;
}
}
}
public void genIfExpresion (ILCodeGen cg, ArrayList exp, uint scope, string proc_actual,
Emit.Label fin, ref Emit.Label orlabel)
{
int tipo = 0;
Symbol s = null;
bool hasOr = hasToGenOrLabel(exp);
ReorderIFExpression(exp, proc_actual, scope);
if (hasOr)
cg.DefineLabel(ref orlabel);
foreach (Expr e in exp)
{
if (e is IntLiteral)
{
IntLiteral lit = (IntLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.INT,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is RealLiteral)
{
RealLiteral lit = (RealLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.REAL,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is BoolLiteral)
{
BoolLiteral lit = (BoolLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.BOOLEAN,0,null);
cg.loadVariable(s, false, scope, proc_actual);
if (lit.Value == "true")
cg.genFalseStatement(fin);
else
cg.genTrueStatement(fin);
}
else if (e is StringLiteral)
{
StringLiteral lit = (StringLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.STRING,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is CharLiteral)
{
CharLiteral lit = (CharLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.CHAR,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is Variable)
{
Variable var = (Variable)e;
if (scope == 0)
s = symtab.getSymbol(var.Value);
else
s = symtab.getSymbol(proc_actual, var.Value, ref tipo);
if (s != null)
{
if (tipo == 1)
{
Param p = (Param)s;
cg.loadVariable(s, p.Reference, scope, proc_actual);
}
else
cg.loadVariable(s, false, scope, proc_actual);
}
tipo = 0;
if (s.Type.toString() == "BOOLEAN")
{
if (var.Tipo == "NOT")
cg.genTrueStatement(fin);
else
cg.genFalseStatement(fin);
}
}
else if (e is Function)
{
ExpFunction ex = (ExpFunction)e;
}
else if (e is EQExpresion)
{
if (hasOr)
cg.genDFStatement(orlabel);
else
cg.genDFStatement(fin);
hasOr = false;
}
else if (e is DFExpresion)
{
if (hasOr)
cg.genEQStatement(orlabel);
else
cg.genEQStatement(fin);
hasOr = false;
}
else if (e is GEExpresion)
{
if (hasOr)
cg.genLTStatement(orlabel);
else
cg.genLTStatement(fin);
hasOr = false;
}
else if (e is GTExpresion)
{
if (hasOr)
cg.genLEStatement(orlabel);
else
cg.genLEStatement(fin);
hasOr = false;
}
else if (e is LEExpresion)
{
if (hasOr)
cg.genGTStatement(orlabel);
else
cg.genGTStatement(fin);
hasOr = false;
}
else if (e is LTExpresion)
{
if (hasOr)
cg.genGEStatement(orlabel);
else
cg.genGEStatement(fin);
hasOr = false;
}
}
}
public void genRepeatExpresion (ILCodeGen cg, ArrayList exp, uint scope, string proc_actual,
Emit.Label ini, Emit.Label body, Emit.Label fin)
{
int tipo = 0;
Symbol s = null;
bool hasAnd = hasToGenAndLabel(exp);
ReorderWHILEExpression(exp, proc_actual, scope);
cg.MarkLabel(ini);
foreach (Expr e in exp)
{
if (e is IntLiteral)
{
IntLiteral lit = (IntLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.INT,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is RealLiteral)
{
RealLiteral lit = (RealLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.REAL,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is BoolLiteral)
{
BoolLiteral lit = (BoolLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.BOOLEAN,0,null);
cg.loadVariable(s, false, scope, proc_actual);
if (lit.Value == "true")
cg.genFalseStatement(body);
else
cg.genTrueStatement(body);
}
else if (e is StringLiteral)
{
StringLiteral lit = (StringLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.STRING,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is CharLiteral)
{
CharLiteral lit = (CharLiteral)e;
s = new Symbol(lit.Value, new Type());
s.Type = new Type (Type.T.CHAR,0,null);
cg.loadVariable(s, false, scope, proc_actual);
}
else if (e is Variable)
{
Variable var = (Variable)e;
if (scope == 0)
s = symtab.getSymbol(var.Value);
else
s = symtab.getSymbol(proc_actual, var.Value, ref tipo);
if (s != null)
{
if (tipo == 1)
{
Param p = (Param)s;
cg.loadVariable(s, p.Reference, scope, proc_actual);
}
else
cg.loadVariable(s, false, scope, proc_actual);
}
tipo = 0;
if (s.Type.toString() == "BOOLEAN")
{
if (var.Tipo == "NOT")
cg.genTrueStatement(body);
else
cg.genFalseStatement(body);
}
}
else if (e is Function)
{
ExpFunction ex = (ExpFunction)e;
}
else if (e is EQExpresion)
{
if (hasAnd)
cg.genDFStatement(fin);
else
cg.genDFStatement(body);
hasAnd = false;
}
else if (e is DFExpresion)
{
if (hasAnd)
cg.genEQStatement(fin);
else
cg.genEQStatement(body);
hasAnd = false;
}
else if (e is GEExpresion)
{
if (hasAnd)
cg.genLTStatement(fin);
else
cg.genLTStatement(body);
hasAnd = false;
}
else if (e is GTExpresion)
{
if (hasAnd)
cg.genLEStatement(fin);
else
cg.genLEStatement(body);
hasAnd = false;
}
else if (e is LEExpresion)
{
if (hasAnd)
cg.genGTStatement(fin);
else
cg.genGTStatement(body);
hasAnd = false;
}
else if (e is LTExpresion)
{
if (hasAnd)
cg.genGEStatement(fin);
else
cg.genGEStatement(body);
hasAnd = false;
}
}
}
}