private void ReductionEvent(ReduceEventArgs pValue)
{
switch (pValue.Token.Symbol.ToString())
{
case "<Value>":
string Value = "";//pValue.Token.Tokens[0].ToString().Trim(new char[] { '{', '}' });
//System.Console.Write(Value);
this.NodeStack.Push(new TreeNode(Value));
break;
case "<Negate Exp>":
System.Collections.Generic.LinkedListNode<string> Node = new System.Collections.Generic.LinkedListNode<string>("-");
//System.Console.Write("-");
TreeNode NegateNode = new TreeNode("-");
NegateNode.Right = this.NodeStack.Pop();
this.NodeStack.Push(NegateNode);
break;
case "<Add Exp>":
//System.Console.Write("+");
TreeNode AddExpNode = new TreeNode("+");
AddExpNode.Right = this.NodeStack.Pop();
AddExpNode.Left = this.NodeStack.Pop();
this.NodeStack.Push(AddExpNode);
break;
case "<Assign_Statement>":
string Identifier = "";//args.Token.Tokens[0].ToString().Trim(new char[] { '[', ']' });
//System.Console.Write(Identifier);
//System.Console.Write("=");
TreeNode AssignNode = new TreeNode("=");
this.TreeList.GetLast().Right = AssignNode;
AssignNode.Right = this.NodeStack.Pop();
AssignNode.Left = new TreeNode(Identifier);
this.NodeStack.Push(AssignNode);
break;
case "<Statement>":
TreeNode Statement = new TreeNode("statement\n");
Statement.Right = this.NodeStack.Pop();
Statement.Left = this.NodeStack.Pop();
this.NodeStack.Push(Statement);
break;
case "<StatementList>":
TreeNode StatementList = new TreeNode("sl\n");
StatementList.Right = this.NodeStack.Pop();
StatementList.Left = this.NodeStack.Pop();
this.NodeStack.Push(StatementList);
break;
case "<Program>":
TreeNode Program = new TreeNode("program");
Program.Right = this.NodeStack.Pop();
Program.Left = this.NodeStack.Pop();
this.NodeStack.Push(Program);
break;
default:
System.Console.WriteLine(pValue.Token.Symbol.ToString());
break;
}
}
private void DoReduce(Token token, ReduceAction action)
{
int reduceLength = action.Rule.Rhs.Length;
State currentState;
// Do not reduce if the rule is single nonterminal and TrimReductions is on
bool skipReduce = ((TrimReductions) && (reduceLength == 1) && (action.Rule.Rhs[0] is SymbolNonterminal));
if (skipReduce)
{
stateStack.Pop();
currentState = stateStack.Peek();
}
else
{
Token[] tokens = new Token[reduceLength];
for (int i = 0; i < reduceLength; i++)
{
stateStack.Pop();
tokens[reduceLength - i - 1] = tokenStack.Pop();
}
NonterminalToken nttoken;
if (reduceLength == 0)
{
nttoken = new NonterminalToken(action.Rule, tokens, token.Location);
}
else
{
nttoken = new NonterminalToken(action.Rule, tokens, tokens[reduceLength - 1].Location);
}
tokenStack.Push(nttoken);
currentState = stateStack.Peek();
if (OnReduce != null)
{
ReduceEventArgs args = new ReduceEventArgs(action.Rule, nttoken, currentState);
OnReduce(this, args);
DoReleaseTokens(args.Token);
continueParsing = args.Continue;
}
}
Action gotoAction = currentState.Actions.Get(action.Rule.Lhs);
if (gotoAction is GotoAction)
{
DoGoto(token, (GotoAction)gotoAction);
}
else
{
throw new ParserException("Invalid action table in state");
}
}
private void ReduceEvent(LALRParser parser, ReduceEventArgs args)
{
try
{
args.Token.UserObject = CreateObject(args.Token);
}
catch (Exception e)
{
args.Continue = false;
MainForm.mainForm.WriteResult(e.Message);
}
}
private void ReduceEvent(LALRParser parser, ReduceEventArgs args)
{
try
{
args.Token.UserObject = CreateObject(args.Token);
}
catch (Exception e)
{
args.Continue = false;
//todo: Report message to UI?
}
}
private void ReduceEvent(LALRParser parser, ReduceEventArgs args)
{
try
{
args.Token.UserObject = CreateObject(args.Token);
}
catch (Exception e)
{
_mainForm.setLeituraState(false);
_mainForm.setSyntaxState(false);
MessageBox.Show(e.ToString());
args.Continue = false;
//todo: Report message to UI?
}
}
private void DoReduce(Token token, ReduceAction action)
{
int reduceLength = action.Rule.Rhs.Length;
State currentState;
// Do not reduce if the rule is single nonterminal and TrimReductions is on
bool skipReduce = ((TrimReductions) &&
(reduceLength == 1) && ( action.Rule.Rhs[0] is SymbolNonterminal));
if (skipReduce)
{
stateStack.Pop();
currentState = stateStack.Peek();
}
else
{
Token[] tokens = new Token[reduceLength];
for (int i = 0; i < reduceLength; i++)
{
stateStack.Pop();
tokens[reduceLength-i-1] = tokenStack.Pop();
}
NonterminalToken nttoken = new NonterminalToken(action.Rule,tokens);
tokenStack.Push(nttoken);
currentState = stateStack.Peek();
if (OnReduce != null)
{
ReduceEventArgs args = new ReduceEventArgs(action.Rule,
nttoken,
currentState);
OnReduce(this,args);
DoReleaseTokens(args.Token);
continueParsing = args.Continue;
}
}
Action gotoAction = currentState.Actions.Get(action.Rule.Lhs);
if (gotoAction is GotoAction)
{
DoGoto(token,(GotoAction)gotoAction);
}
else
{
throw new ParserException("Invalid action table in state");
}
}
private void ReduceEvent(LALRParser parser, ReduceEventArgs args)
{
try
{
args.Token.UserObject = CreateObject(args.Token);
//Console.WriteLine(args.Token);
}
catch (Exception e)
{
args.Continue = false;
Console.WriteLine(args.Token.ToString());
//todo: Report message to UI?
}
}
private void ReduceEvent(LALRParser parser, ReduceEventArgs args)
{
try
{
args.Token.UserObject = CreateObject(args.Token);
}
catch (ApplicationException ex)
{
args.Continue = false;
Logger.Log(DateTime.Now + ": " + ex.Message);
//todo: Report message to UI?
}
}
/// <summary>
/// Event handler for the reduce action.
/// </summary>
/// <param name="parser">parser that is the source of this event</param>
/// <param name="args">event arguments</param>
private void ReduceEvent(LALRParser parser, ReduceEventArgs args)
{
//WriteLn(args.Rule.Id.ToString());
//WriteLn(args.Rule.Lhs.Id.ToString());
AddViewItem("Reduce",
null,
args.Token.Rule.ToString(),
"",
args.NewState.Id.ToString(),
2);
}
private void OnReduce(LALRParser argParser, ReduceEventArgs args)
{
args.Token.UserObject = CreateObject(args.Token, argParser);
if (endSymbol == 2)
{
TerminalToken eofToken =
new TerminalToken(SymbolCollection.EOF, SymbolCollection.EOF.Name, args.Token.Location);
argParser.lookahead = eofToken;
endSymbol = 3;
}
}
private void ReduceEvent(LALRParser parser, ReduceEventArgs args)
{
try
{
args.Token.UserObject = CreateObject(args.Token);
}
catch (Exception e)
{
args.Continue = false;
MainForm.mainForm.WriteResult(e.Message);
}
}