public override void PostWalk(VarInitialization node) { }
public VarDeclaration(VarInitialization[] vars)
{
_vars = vars;
}
// VarInitialization
public override bool Walk(VarInitialization node) { return false; }
public virtual void PostWalk(VarInitialization node) { }
// VarInitialization
public virtual bool Walk(VarInitialization node) { return true; }
private Stmt ParseVarDeclaration()
{
Eat(TokenType.KeywordVar);
int gstart = GetStart();
List<VarInitialization> vars = new List<VarInitialization>();
do
{
int start = GetStart();
NameToken t = NextToken() as NameToken;
Expr initValue = null;
if (t == null)
{
ReportSyntaxError("Expected NameToken.");
break;
}
if (MaybeEat(TokenType.Assign))
{
initValue = ParseExpr();
}
VarInitialization v = new VarInitialization(t.Name, initValue);
v.SetLoc(_globalParent, start, GetEnd());
vars.Add(v);
} while (MaybeEat(TokenType.Comma));
VarDeclaration decl = new VarDeclaration(vars.ToArray());
decl.SetLoc(_globalParent, gstart, GetEnd());
EatSemiOrInteractiveEndOfFile();
return decl;
}
// VarInitialization
public override bool Walk(VarInitialization node)
{
node.Parent = _currentScope;
node.Variable = DefineVariable(node.Name);
return base.Walk(node);
}