public static void ParseWithEtoParse (string grammar_text, string text_to_compile)
{
var style = (Eto.Parse.Grammars.EbnfStyle)(
(uint)Eto.Parse.Grammars.EbnfStyle.Iso14977
& ~( (uint) Eto.Parse.Grammars.EbnfStyle.WhitespaceSeparator )
| (uint) Eto.Parse.Grammars.EbnfStyle.EscapeTerminalStrings);
Eto.Parse.Grammars.EbnfGrammar grammar;
Eto.Parse.Grammar parser;
try
{
grammar = new Eto.Parse.Grammars.EbnfGrammar(style);
parser = grammar.Build(grammar_text, "grammar");
}
catch (Exception ex)
{
Trace.WriteLine (ex.ToString ());
/*
System.ArgumentException: the topParser specified is not found in this ebnf
at Eto.Parse.Grammars.EbnfGrammar.Build (System.String bnf, System.String startParserName) [0x00048] in <filename unknown>:0
at Globals.Main (System.String[] args) [0x0002b] in /var/calculate/remote/distfiles/egit-src/SqlParser-on-EtoParse.git/test1/Program.cs:20
*/
throw;
}
var match = parser.Match(text_to_compile);
if (match.Success == false) {
Console.Out.WriteLine ("No luck!");
}
else {
// DumpAllMatches (match, nameOfTheStartingRule);
}
}
public Parser(string textGrammar, string root_rule, EbnfStyle style)
{
var ebnfGrammar = new Eto.Parse.Grammars.EbnfGrammar(style);
myGrammar = ebnfGrammar.Build(textGrammar, root_rule);
myGrammar.CheckAbsentRules();
}
private static string GetCode(CommandLineOptions opts)
{
switch (Path.GetExtension(opts.GrammarFile)) {
case ".bnf":
var gr = new BnfGrammar();
return gr.ToCode(File.ReadAllText(opts.GrammarFile), opts.StartParser, opts.GrammarName);
case ".ebnf":
var egr = new EbnfGrammar(EbnfStyle.W3c | EbnfStyle.SquareBracketAsOptional | EbnfStyle.WhitespaceSeparator);
return egr.ToCode(File.ReadAllText(opts.GrammarFile), opts.StartParser, opts.GrammarName);
case ".gold":
var ggr = new GoldGrammar();
return ggr.ToCode(File.ReadAllText(opts.GrammarFile), opts.GrammarName);
}
throw new Exception("Unknown Grammar. Try .ebnf .bnf .gold");
}
public Parser(string textGrammar, string root_rule, EbnfStyle style)
{
var ebnfGrammar = new Eto.Parse.Grammars.EbnfGrammar( style );
myGrammar = ebnfGrammar.Build(textGrammar, root_rule);
myGrammar.CheckAbsentRules ();
}
public void TestSqlParser()
{
const string sqlStatement = @"select * from MyTable where MyColumn = hello";
var ebnfGrammar = new EbnfGrammar(EbnfStyle.W3c | EbnfStyle.SquareBracketAsOptional | EbnfStyle.WhitespaceSeparator);
var xmlGrammar = ebnfGrammar.Build(sqlW3cEbnf, "command");
var match = xmlGrammar.Match(sqlStatement);
Assert.IsTrue(match.Success, match.ErrorMessage);
}
public void TestXmlParser()
{
const string xmlDocument = @"<?xml version='1.0' encoding='utf-8' ?>
<body class=""blah"">
<div>some text</div>
<!-- some comment -->
</body>";
var ebnfGrammar = new EbnfGrammar(EbnfStyle.W3c & ~EbnfStyle.UseCommentRuleWithSeparator);
var xmlGrammar = ebnfGrammar.Build(xmlW3cEbnf, "document");
var match = xmlGrammar.Match(xmlDocument);
Assert.IsTrue(match.Success, match.ErrorMessage);
}
public void TestXmlParser()
{
const string xmlDocument = @"<?xml version='1.0' encoding='utf-8' ?>
<body class=""blah"">
<div>some text</div>
<!-- some comment -->
</body>";
var ebnfGrammar = new EbnfGrammar(EbnfStyle.W3c & ~EbnfStyle.UseCommentRuleWithSeparator);
var xmlGrammar = ebnfGrammar.Build(xmlW3cEbnf, "document");
// define the terminals in the grammar
xmlGrammar.SetTerminals("Letter", "BaseChar", "Ideographic", "CombiningChar", "Digit", "Extender", "PubidChar", "Char", "S", "EnumeratedType", "NameChar", "Eq");
var match = xmlGrammar.Match(xmlDocument);
Assert.IsTrue(match.Success, match.ErrorMessage);
}
public void Simple()
{
var grammarString = @"
ws := {? Terminals.WhiteSpace ?};
letter or digit := ? Terminals.LetterOrDigit ?;
simple value := letter or digit, {letter or digit};
bracket value = simple value, {simple value};
optional bracket = '(', bracket value, ')' | simple value;
first = optional bracket;
second = optional bracket;
grammar = ws, first, second, ws;
";
var input = " hello ( parsing world ) ";
// our grammar
var grammar = new EbnfGrammar(EbnfStyle.Iso14977).Build(grammarString, "grammar");
var match = grammar.Match(input);
Assert.IsTrue(match.Success, match.ErrorMessage);
Assert.AreEqual("hello", match["first"]["simple value", true].Text);
Assert.AreEqual("parsing world", match["second"]["bracket value", true].Text);
}
public void EbnfToCode()
{
var ebnfGrammar = new EbnfGrammar(EbnfStyle.Iso14977 | EbnfStyle.UseCommentRuleWithSeparator);
var code = ebnfGrammar.ToCode(ebnf, "syntax", "MyEbnfGrammar");
var myEbnf = Helper.Create<Grammar>(code, "MyEbnfGrammar");
SetEbnfRules(myEbnf);
var match = myEbnf.Match(ebnf);
Assert.IsTrue(match.Success, match.ErrorMessage);
}
public void TestEbnf()
{
var ebnfGrammar = new EbnfGrammar(EbnfStyle.Iso14977 | EbnfStyle.UseCommentRuleWithSeparator);
var myEbnf = ebnfGrammar.Build(ebnf, "syntax");
SetEbnfRules(myEbnf);
var match = myEbnf.Match(ebnf);
Assert.IsTrue(match.Success, match.ErrorMessage);
}
