private static void ToGroupedTokenString(IParseTreeNode node, StringBuilder builder, bool mayNeedParens)
{
if (node.Symbol is Token)
{
builder.Append(node.Symbol.Name);
}
else
{
var writeParens = mayNeedParens && node.Children.Count > 1;
if (writeParens)
{
builder.Append('(');
}
for (var i = 0; i < node.Children.Count; ++i)
{
if (i > 0)
{
builder.Append(' ');
}
ToGroupedTokenString(node.Children[i], builder, mayNeedParens: node.Children.Count > 1);
}
if (writeParens)
{
builder.Append(')');
}
}
}
private static string ToGroupedTokenString(IParseTreeNode node)
{
var builder = new StringBuilder();
ToGroupedTokenString(node.Flatten(), builder, mayNeedParens: false);
return(builder.ToString());
}
private void OnRuleParsed(Rule rule)
{
var children = new IParseTreeNode[rule.Symbols.Count];
for (var i = rule.Symbols.Count - 1; i >= 0; --i)
{
children[i] = this.nodes.Pop();
}
this.nodes.Push(new Node {
NonTerminal = (NonTerminal)rule.Produced, Children = children
});
}
public virtual void Visit(IParseTreeNode node)
{
var ruleNode = node as ParseTreeRuleNode;
if (ruleNode != null)
{
switch (ruleNode.Rule)
{
case Rule.CompileUnit:
VisitCompileUnit(ruleNode);
break;
case Rule.HiveExpression:
VisitHiveExpression(ruleNode);
break;
case Rule.Block:
VisitBlock(ruleNode);
break;
case Rule.RootKey:
VisitRootKey(ruleNode);
break;
case Rule.RegistryExpression:
VisitRegistryExpression(ruleNode);
break;
case Rule.AddKey:
VisitAddKey(ruleNode);
break;
case Rule.DeleteKey:
VisitDeleteKey(ruleNode);
break;
case Rule.KeyName:
VisitKeyName(ruleNode);
break;
case Rule.KeyValue:
VisitKeyValue(ruleNode);
break;
case Rule.KeyType:
VisitKeyType(ruleNode);
break;
default:
break;
}
}
}
public ParseTreeRuleNode ParseRegistryExpression()
{
IParseTreeNode node = ParseAddKey();
if (node != null)
{
return(new ParseTreeRuleNode(Rule.RegistryExpression, node));
}
node = ParseDeleteKey();
if (node != null)
{
return(new ParseTreeRuleNode(Rule.RegistryExpression, node));
}
return(null);
}
public void OnSymbolParsed(Symbol symbol, Rule rule)
{
if (rule == null)
{
this.nodes.Push(new LeafNode {
Token = (Token)symbol
});
}
else
{
var children = new IParseTreeNode[rule.Symbols.Count];
for (var i = rule.Symbols.Count - 1; i >= 0; --i)
{
children[i] = this.nodes.Pop();
}
this.nodes.Push(new Node {
NonTerminal = (NonTerminal)symbol, Children = children
});
}
}
