theoistic / cpp-ripper Goto Github PK

What steps will reproduce the problem?
1. try to parse attached file.

What is the expected output? What do you see instead?
You can see an exception:

parsing exception occured while parsing 'literal' expected 
'skip(ident_next_char^)'  at 
line number 0, and character number 13
enum a{ B = 0x1} C
             ^

What version of the product are you using? On what operating system?
sept-9-2009-source

Rootcause:
What is happening is, that the 0x1 hexadecimal value is parsed as an 
octal_literal("0") and not as a hex_literal("0x1"). The cause is, that in the 
place of unsigned_literal, the octal_literal is checked first, and that breaks 
the compiler paradigm of searching the longest possible token string.

Proposed fix:
the simplest way to fix this issue is to re-arrange the parsing order from:

            unsigned_literal
                = decimal_literal
                | octal_literal
                | hex_literal;

to:

            unsigned_literal
                = decimal_literal
                | hex_literal
                | octal_literal;

this way the hex literal(which is always longer because of "0x" factor) will be 
parsed before octal. 

What steps will reproduce the problem?
1. Parse something like "double a = 6.267e-002;"

What is the expected output? What do you see instead?

parsing exception occured while parsing 'literal' expected
'skip(ident_next_char^)'  at line number 9, and character number 18
 {6.26737614678093e-002, -6.21825704935264e-001, 4.38399455776503e-001 },

(error points at the "e" in the first floating point number above)



What version of the product are you using? On what operating system?

revision 5