public ParseRuleBranch <TToken> Rule(Action <ParseContext <TToken> > factory)
{
if (Asserts.Any(a => a.Error != null))
{
return(new ParseRuleBranch <TToken>(this));
}
var currentOffset = Asserts.Aggregate(0, (agg, a) => agg + a.Length);
var assert = new AssertResultBranch <TToken>
{
Index = Asserts.Count,
BranchName = BranchName
};
Asserts.Add(assert);
var body = factory.Method.ToString();
body = body.Substring(5, body.IndexOf('(') - 5);
_stack111.Push(body);
Console.WriteLine(_stack111.Aggregate(string.Empty, (agg, b) => b + " -> " + agg));
try
{
var localContext = Context.Branch(currentOffset);
factory(localContext);
var branch = localContext.SuccessBranch ?? localContext.FailedBranch;
if (branch != null)
{
assert.Branch = branch;
}
else
{
assert.Error = new ParserException("There is no sequence checks", BranchName);
}
}
catch (Exception e)
{
assert.Error = new ParserException(null, BranchName, e);
}
_stack111.Pop();
Console.WriteLine("<-" + (assert.Error == null ? "Success" : "Error"));
//Console.WriteLine(_stack111.Aggregate(string.Empty, (agg, b) => b + " -> " + agg));
return(new ParseRuleBranch <TToken>(this, assert.Branch.Environment, assert.Error != null));
}
public ParseTokenBranch <TToken> Token(string token)
{
if (Asserts.Any(a => a.Error != null))
{
return(new ParseTokenBranch <TToken>(this));
}
var currentOffset = Asserts.Aggregate(0, (agg, a) => agg + a.Length);
var aheadToken = Context.GetToken(currentOffset);
var assert = new AssertResultToken <TToken>
{
Index = Asserts.Count,
Token = aheadToken,
BranchName = BranchName
};
Asserts.Add(assert);
try
{
if (aheadToken == null)
{
assert.Error = new ParserException("Unexpected end of sequence.", BranchName);
}
else
{
var expectedToken = Context.TokenTable[token];
if (expectedToken?.Equals(aheadToken) != true)
{
assert.Error = new ParserException($"Unexpected token '{aheadToken}'. " +
$"'{expectedToken?.ToString() ?? "unknown"}' token expected.",
BranchName);
}
}
}
catch (Exception e)
{
assert.Error = new ParserException(null, BranchName, e);
}
return(new ParseTokenBranch <TToken>(this, aheadToken, assert.Error != null));
}
public void Commit(Action <ParseEnvironment> action)
{
if (Asserts.Any(a => a.Error != null))
{
return;
}
var assert = new AssertResultEmpty
{
Index = Asserts.Count
};
Asserts.Add(assert);
try
{
action?.Invoke(Environment);
}
catch (Exception e)
{
assert.Error = new ParserException(null, BranchName, e);
}
}