void Decl()
{
var isNew = false; var type = ScriptVarType.Undefined; ScriptVar v; var isCalling = false; string name = null; var isAssigned = false;
if (la.kind == 24)
{
Get();
isNew = true;
}
if (NotBrace())
{
Expect(1);
name = t.val;
if (!_isParsing)
{
var isExists = Vars.IsFunctionExists(name) || Vars.IsHostFunctionExists(name);
if (isExists)
{
SemErr(string.Format("Function '{0}' exists and cant be assigned as variable", name));
}
isExists = Vars.IsVarExists(name);
if (isNew && isExists)
{
SemErr(string.Format("Variable '{0}' already declared", name));
}
if (isExists)
{
type = Vars.GetVar(name).Type;
}
if (!isNew && !isExists)
{
SemErr(string.Format("Variable '{0}' not declared", name));
}
}
}
else if (StartOf(2))
{
if (isNew)
{
SemErr("Invalid usage of variable declaration");
}
Expr(out v);
isCalling = true;
}
else
{
SynErr(33);
}
if (la.kind == 25)
{
if (isCalling)
{
SemErr("Only variable can be assigned, not expression");
}
Get();
Expr(out v);
if (!_isParsing)
{
if (type != ScriptVarType.Undefined && v.Type != type)
{
SemErr(string.Format("Variable '{0}' type cant be changed", name));
}
Vars.RegisterVar(name, v);
}
else
{
isAssigned = true;
}
}
Expect(11);
if (_isParsing && isNew && !isCalling && !isAssigned)
{
SemErr(string.Format("Variable '{0}' should be initialized", name));
}
}
public int GetID(string varName)
{
return(Vars.GetVar(varName).Number);
}
