public override bool Walk(ForStatement node)
{
node.Parent = _currentScope;
if (_currentScope is FunctionDefinition)
_currentScope.ShouldInterpret = false;
//PushScope(node);
if (node.Initialization != null)
node.Initialization.Walk(this);
if (node.Condition != null)
node.Condition.Walk(this);
if (node.Incrementation != null)
node.Incrementation.Walk(this);
PushLoop(node);
if (node.Body != null)
node.Body.Walk(this);
PopLoop();
return false;
}
private Statement ParseForStatement()
{
Eat(TokenKind.KeywordFor);
var start = GetStart();
Eat(TokenKind.LeftParenthesis);
Statement initialization;
Expression condition;
Expression incrementation;
_openParen++;
try
{
if (!PeekToken(TokenKind.Semicolon))
initialization = ParseStatement();
else
{
initialization = null;
Eat(TokenKind.Semicolon);
}
if (!PeekToken(TokenKind.Semicolon))
condition = ParseExpression();
else
condition = null;
Eat(TokenKind.Semicolon);
if (!PeekToken(TokenKind.RightParenthesis))
incrementation = ParseExpression();
else
incrementation = null;
Eat(TokenKind.RightParenthesis);
}
finally
{
_openParen--;
}
Statement body;
try
{
_inLoop = true;
body = ParseBlockOrStatement();
}
finally
{
_inLoop = false;
}
if (body == null)
return null;
Statement ret = new ForStatement(initialization, condition, incrementation, body);
ret.SetLoc(_globalParent, start, GetEnd());
return ret;
}
public override void PostWalk(ForStatement node)
{
//Debug.Assert(_currentScope == node);
//PopScope();
}