public static List<CatAstNode> Parse(string s)
{
Peg.Parser parser = new Peg.Parser(s);
try
{
bool bResult = parser.Parse(CatGrammar.CatProgram());
if (!bResult)
throw new Exception("failed to parse input");
}
catch (Exception e)
{
Output.WriteLine("Parsing error occured with message: " + e.Message);
Output.WriteLine(parser.ParserPosition);
throw e;
}
AstProgram tmp = new AstProgram(parser.GetAst());
return tmp.mStatements;
}
public static List <CatAstNode> Parse(string s)
{
Peg.Parser parser = new Peg.Parser(s);
try {
bool bResult = parser.Parse(CatGrammar.CatProgram());
if (!bResult)
{
throw new Exception("failed to parse input");
}
} catch (Exception e) {
Output.WriteLine("Parsing error occured with message: " + e.Message);
Output.WriteLine(parser.ParserPosition);
throw e;
}
AstProgram tmp = new AstProgram(parser.GetAst());
return(tmp.mStatements);
}
public override bool Match(Parser p)
{
int pos = p.GetPos();
if (mRule.Match(p))
{
p.SetPos(pos);
return false;
}
Trace.Assert(p.GetPos() == pos);
return true;
}
public override bool Match(Parser p)
{
return p.AtEnd();
}
public override bool Match(Parser p)
{
if (!mRule.Match(p))
return false;
while (mRule.Match(p))
{ }
return true;
}
public override bool Match(Parser p)
{
while (mRule.Match(p))
{ }
return true;
}
public override bool Match(Parser p)
{
if (p.AtEnd()) return false;
if (p.GetChar() >= mFirst && p.GetChar() <= mLast)
{
p.GotoNext();
return true;
}
return false;
}
public override bool Match(Parser p)
{
if (!p.AtEnd())
{
p.GotoNext();
return true;
}
return false;
}
public override bool Match(Parser p)
{
// TODO: make a more descriptive error message.
if (!mRule.Match(p))
throw new Exception(msMsg);
return true;
}
public override bool Match(Parser p)
{
return mDeleg().Match(p);
}
public override bool Match(Parser p)
{
p.CreateNode(mLabel);
bool result = mRule.Match(p);
if (result)
{
p.CompleteNode();
}
else
{
p.AbandonNode();
}
return result;
}
public abstract bool Match(Parser p);
public void Complete(Parser p)
{
mnCount = p.GetPos() - mnBegin;
}
public PegAstNode Add(Parser p, Object label)
{
PegAstNode ret = new PegAstNode(p.GetPos(), msText, this, label);
mChildren.Add(ret);
return ret;
}
public override bool Match(Parser p)
{
if (p.AtEnd()) return false;
if (p.GetChar() == mData)
{
p.GotoNext();
return true;
}
return false;
}
public override bool Match(Parser p)
{
if (p.AtEnd()) return false;
int pos = p.GetPos();
foreach (char c in mData)
{
if (p.GetChar() != c)
{
p.SetPos(pos);
return false;
}
p.GotoNext();
}
return true;
}
public override bool Match(Parser p)
{
int iter = p.GetPos();
foreach (Rule r in mRules)
{
if (!r.Match(p))
{
p.SetPos(iter);
return false;
}
}
return true;
}
public override bool Match(Parser p)
{
if (p.AtEnd())
return false;
foreach (char c in mData)
{
if (c == p.GetChar())
{
p.GotoNext();
return true;
}
}
return false;
}
public override bool Match(Parser p)
{
foreach (Rule r in mRules)
{
if (r.Match(p))
return true;
}
return false;
}
public override bool Match(Parser p)
{
int pos = p.GetPos();
while (!mTerm.Match(p))
{
if (!mElem.Match(p))
{
p.SetPos(pos);
return false;
}
}
return true;
}
public override bool Match(Parser p)
{
mRule.Match(p);
return true;
}
