How to get ParseTree in AnTLR4 with C#?

[Christian LeMoussel]

I am currently using AnTLR4 in C# but I am facing a problem, I don't know how to get the the object/class ParseTree.

I find in C# the fully qualified name here is Antlr4.Runtime.Tree.IParseTree but how to get the object?

AntlrInputStream inputStream = new AntlrInputStream(sSpinTexte);
SpinParserLexer SpinLexer = new SpinParserLexer(inputStream); 
CommonTokenStream commonTokenStream = new CommonTokenStream(SpinLexer); 
SpinParserParser SpinParser = new SpinParserParser(commonTokenStream); 
IParseTree tree = ?????

Can you please help?

[Terence Parr]

tree = parser.rule();

sounds like it's time to buy the book :)

Ter

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[Christian LeMoussel]

Rule() method doesn't exist in C#. 

I was told another answer with parser.StartRuleName(); StartRuleName is the name of the rule you would like to parse. 

With my example , the answer is 

IParseTree tree = SpinParser.expr();

[Sam Harwell]

Hi Christian,

That's what Terence meant by the Rule method. All of the methods generated for rules defined in your parser grammar return an object that implements the IParseTree interface. 

Sam

[Christian LeMoussel]

OK.
Terence , Sorry for my misunderstanding


BR


Christian.