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);
}
