antlr4 - ANTLR - number surrounded by single quotes -


I want to recognize the ANTLR for '10' (including single quotes) but it only gives me an error: "" "" "" at 10 "

I have Test.g4 is for: 

  grammar test; Rule: Number; Number: Quote NUM quotes; NUM: [0-9] +; Excerpt: '\' '; WS: ['\ t \ r \ n] + - & gt; Skip;

Then the driver looks like a file: 

  public class teststaff {public static zero main (string [] args) {charstream input = new ANTLRInputStream ( "10"); TestLexer lexer = New TestLuxer; GeneralTokenStream Token = New CommonTokenStream (Lexer); Test Parser Parser = New Test Parser (token); parser.rules ();}}

I have tried to think about every difference and I am getting this: missing from '10'

If this is the case, then using version 4.1.

Your rule: 

  WS: ['\ t \ r \ n] + - & gt; Skip;

Match , And skips, input "'" (space + quote).

Remove the quote from that class: 

  WS: [\ t \ R \ n] + - & gt; Skip;

and you should be OK.


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