public declAST parseClassDecl()
{
declsAST temp = null;
declsAST result = null;
declAST varD;
accept(sym.CLASS, "CLASS");
Symbol temptoken = currentToken;
accept(sym.ID);
accept(sym.COR_A, "{");
if (currentToken.sym == sym.COR_C)
{
accept(sym.COR_C, "}");
return(new classSinVarDeclAST(temptoken));
}
else
{
Boolean ind = false;
while (currentToken.sym == sym.ID)
{
if (ind == false)
{
varD = parseVarDecl();
result = new undeclAST(varD);
}
else
{
varD = parseVarDecl();
temp = new undeclAST(varD);
result = new varsdeclAST(temp, result);
}
//revisar
}
accept(sym.COR_C, "}");
}
return(new classConVarDeclAST(result, temptoken));
}
Object VisitVarsdeclAST(varsdeclAST var, object arg)
{
int numaux = ((Integer)arg).intValue(); printtab(numaux); System.out.println(c.getClass().getName()); if(c.- !=null) c.-.visit(this,new Integer(numaux+1)); else{printtab(numaux+1); Console.WriteLine(“NULL”);} return null;
}
//METODOS PRIVADOS DE PARSING PARA CADA NO TERMINAL:
public programAST parseProgram()
{
declAST conD,conD2;
declAST varD,varD2;
declAST claD, claD2;
declAST metD, metD2;
declsAST result=null;
declsAST temp=null;
Boolean ind = false;
Boolean var = false;
Boolean var2 = false;
Symbol symtemp;
if (currentToken.sym == sym.CLASS)
{
accept(sym.CLASS, "class");
symtemp = currentToken;
accept(sym.ID, "ident");
while (currentToken.sym == sym.CONST || currentToken.sym == sym.ID || currentToken.sym == sym.CLASS)
{
var=true;
switch (currentToken.sym)
{
case sym.CONST:
{
if (ind == false)
{
conD = parseConstDecl();
result=new undeclAST(conD);
ind = true;
}
else {
conD2 = parseConstDecl();
temp = new undeclAST(conD2);
result = new varsdeclAST(result, temp);
}
break;
}
case sym.ID:
{
if (ind == false)
{
varD = parseVarDecl();
result = new undeclAST(varD);
ind = true;
}
else
{
varD2 = parseVarDecl();
temp = new undeclAST(varD2);
result = new varsdeclAST(result, temp);
}
break;
}
case sym.CLASS:
{
if (ind == false)
{
claD = parseClassDecl();
result = new undeclAST(claD);
ind = true;
}
else
{
claD2 = parseClassDecl();
temp = new undeclAST(claD2);
result = new varsdeclAST(result, temp);
}
break;
}
// return result;
}
}
accept(sym.COR_A, "{");
while (currentToken.sym == sym.ID || currentToken.sym == sym.VOID)
{
var2=true;
if (ind == false)
{
metD = parseMethodDecl();
result = new undeclAST(metD);
ind = true;
}
else {
metD2 = parseMethodDecl();
temp = new undeclAST(metD2);
result = new varsdeclAST(result, temp);
}
}
accept(sym.COR_C, "}");
if (var==false && var2==false) {
return new programSinNadaAST(symtemp);
}
if (var==true && var2==false)
{
return new programSinMetAST(symtemp,result);
}
if (var=false && var2==true)
{
return new programSinDeclAST(symtemp,result);
}
if (var==true && var2==true)
{
return new programConTodoAST(symtemp,result);
}
}
else error(currentToken, "CLASS");
return null;
}
public declAST parseMethodDecl()
{
declAST varD=null;
declsAST varD2=null;
declsAST varD3 = null;
Symbol temp = currentToken;
typeAST type=null;
if (currentToken.sym == sym.ID || currentToken.sym == sym.VOID)
{
if (currentToken.sym == sym.ID)
{
type = parseType();
}
if (currentToken.sym == sym.VOID)
{
accept(sym.VOID, "void");
}
temp = currentToken;
accept(sym.ID, "ident");
accept(sym.P_ABI, "(");
formParsAST formP=null;
if (currentToken.sym == sym.ID)
{
formP=parseFormPars();
}
else
accept(sym.P_CER, ")");
Boolean ind = false;
while (currentToken.sym == sym.ID)
{
if (ind == false)
{
varD = parseVarDecl();
varD2 = new undeclAST(varD);
varD3 = varD2;
ind = true;
}
else {
varD = parseVarDecl();
varD2 = new undeclAST(varD);
varD3 = varD2;
varD2 = new varsdeclAST(varD2,varD3);
}
}
blockAST parseB=parseBlock();
if(type==null && formP==null)
{
if (ind == true)
{
return new methodVoidSinFormDeclsAST(temp);
}
else {
return new methodTipoSinFormParsAST(temp, varD2);
// return voidSinFormParsAST(temp, varD, parseB);
}
}
if (type == null && varD == null)
{
return new methodTipoSinVarDeclAST(temp,formP);
// return voidSinVarDeclAST(temp,formP,parseB);
}
if (type == null && varD != null && formP != null)
{
if (ind == true)
return new methodVoidConFormDeclsAST(varD2, formP, temp);
// return voidConForm_DeclsAST(temp, varD2, formP, parseB);
else //return voidConForm_DeclsAST(temp, varD, formP, parseB);
return new methodVoidSinVarDeclAST(formP, temp);
}
if (type == null && varD == null && formP == null)
{
return new methodVoidSinFormDeclsAST(temp);
}
}
return null;
}
public declAST parseClassDecl()
{
declsAST temp=null;
declsAST result=null;
declAST varD;
accept(sym.CLASS, "CLASS");
Symbol temptoken = currentToken;
accept(sym.ID);
accept(sym.COR_A, "{");
if (currentToken.sym == sym.COR_C)
{
accept(sym.COR_C, "}");
return new classSinVarDeclAST(temptoken);
}
else
{ Boolean ind=false;
while (currentToken.sym == sym.ID)
{
if(ind==false)
{
varD = parseVarDecl();
result = new undeclAST(varD);
}
else
{
varD = parseVarDecl();
temp = new undeclAST(varD);
result = new varsdeclAST(temp,result);
}
//revisar
}
accept(sym.COR_C, "}");
}
return new classConVarDeclAST(result,temptoken);
}
//METODOS PRIVADOS DE PARSING PARA CADA NO TERMINAL:
public programAST parseProgram()
{
declAST conD, conD2;
declAST varD, varD2;
declAST claD, claD2;
declAST metD, metD2;
declsAST result = null;
declsAST temp = null;
Boolean ind = false;
Boolean var = false;
Boolean var2 = false;
Symbol symtemp;
if (currentToken.sym == sym.CLASS)
{
accept(sym.CLASS, "class");
symtemp = currentToken;
accept(sym.ID, "ident");
while (currentToken.sym == sym.CONST || currentToken.sym == sym.ID || currentToken.sym == sym.CLASS)
{
var = true;
switch (currentToken.sym)
{
case sym.CONST:
{
if (ind == false)
{
conD = parseConstDecl();
result = new undeclAST(conD);
ind = true;
}
else
{
conD2 = parseConstDecl();
temp = new undeclAST(conD2);
result = new varsdeclAST(result, temp);
}
break;
}
case sym.ID:
{
if (ind == false)
{
varD = parseVarDecl();
result = new undeclAST(varD);
ind = true;
}
else
{
varD2 = parseVarDecl();
temp = new undeclAST(varD2);
result = new varsdeclAST(result, temp);
}
break;
}
case sym.CLASS:
{
if (ind == false)
{
claD = parseClassDecl();
result = new undeclAST(claD);
ind = true;
}
else
{
claD2 = parseClassDecl();
temp = new undeclAST(claD2);
result = new varsdeclAST(result, temp);
}
break;
}
// return result;
}
}
accept(sym.COR_A, "{");
while (currentToken.sym == sym.ID || currentToken.sym == sym.VOID)
{
var2 = true;
if (ind == false)
{
metD = parseMethodDecl();
result = new undeclAST(metD);
ind = true;
}
else
{
metD2 = parseMethodDecl();
temp = new undeclAST(metD2);
result = new varsdeclAST(result, temp);
}
}
accept(sym.COR_C, "}");
if (var == false && var2 == false)
{
return(new programSinNadaAST(symtemp));
}
if (var == true && var2 == false)
{
return(new programSinMetAST(symtemp, result));
}
if (var = false && var2 == true)
{
return(new programSinDeclAST(symtemp, result));
}
if (var == true && var2 == true)
{
return(new programConTodoAST(symtemp, result));
}
}
else
{
error(currentToken, "CLASS");
}
return(null);
}
public declAST parseMethodDecl()
{
declAST varD = null;
declsAST varD2 = null;
declsAST varD3 = null;
Symbol temp = currentToken;
typeAST type = null;
if (currentToken.sym == sym.ID || currentToken.sym == sym.VOID)
{
if (currentToken.sym == sym.ID)
{
type = parseType();
}
if (currentToken.sym == sym.VOID)
{
accept(sym.VOID, "void");
}
temp = currentToken;
accept(sym.ID, "ident");
accept(sym.P_ABI, "(");
formParsAST formP = null;
if (currentToken.sym == sym.ID)
{
formP = parseFormPars();
}
else
{
accept(sym.P_CER, ")");
}
Boolean ind = false;
while (currentToken.sym == sym.ID)
{
if (ind == false)
{
varD = parseVarDecl();
varD2 = new undeclAST(varD);
varD3 = varD2;
ind = true;
}
else
{
varD = parseVarDecl();
varD2 = new undeclAST(varD);
varD3 = varD2;
varD2 = new varsdeclAST(varD2, varD3);
}
}
blockAST parseB = parseBlock();
if (type == null && formP == null)
{
if (ind == true)
{
return(new methodVoidSinFormDeclsAST(temp));
}
else
{
return(new methodTipoSinFormParsAST(temp, varD2));
// return voidSinFormParsAST(temp, varD, parseB);
}
}
if (type == null && varD == null)
{
return(new methodTipoSinVarDeclAST(temp, formP));
// return voidSinVarDeclAST(temp,formP,parseB);
}
if (type == null && varD != null && formP != null)
{
if (ind == true)
{
return(new methodVoidConFormDeclsAST(varD2, formP, temp));
}
// return voidConForm_DeclsAST(temp, varD2, formP, parseB);
else //return voidConForm_DeclsAST(temp, varD, formP, parseB);
{
return(new methodVoidSinVarDeclAST(formP, temp));
}
}
if (type == null && varD == null && formP == null)
{
return(new methodVoidSinFormDeclsAST(temp));
}
}
return(null);
}