| Hi, I want to generate a java parser that keeps the comments in the AST. I used the java grammar following this link http://sablecc.org/wiki/GrammarPage I have to modify the grammar in order to keep comments, but until now I'm facing problems with doing this. Here is the part of the grammar that I modified: Tokens .............. white_space = (sp | ht | ff | line_terminator)*; traditional_comment = '/*' not_star+ '*'+ (not_star_not_slash not_star* '*'+)* '/'; documentation_comment = '/**' '*'* (not_star_not_slash not_star* '*'+)* '/'; end_of_line_comment = '//' input_character* line_terminator?; Ignored Tokens white_space; Productions compilation_unit = package_declaration? [import_declarations]:import_declaration* [type_declarations]:type_declaration*; comment = {javadoc} documentation_comment | {line} end_of_line_comment | {block}traditional_comment; ................... I got the following error: Exception in thread "main" org.sablecc.grammars.java_1_5.parser.ParserException: [1,1] expecting: EOF at org.sablecc.grammars.java_1_5.parser.Parser.parse(Parser.java:12254) at Main.main(Main.java:49) Does any one has an idea. thank you |