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Fix lexer's definition of numeric literals.

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This commit is contained in:
Graydon Hoare 2010-07-01 09:03:47 -07:00
parent 3aaff59dba
commit afc0dc8bfc
1 changed files with 5 additions and 4 deletions
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9
src/boot/fe/lexer.mll
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@ -121,9 +121,10 @@
}
let hexdig = ['0'-'9' 'a'-'f' 'A'-'F']
let bin = "0b" ['0' '1']['0' '1' '_']*
let hex = "0x" hexdig ['0'-'9' 'a'-'f' 'A'-'F' '_']*
let dec = ['0'-'9']+
let decdig = ['0'-'9']
let bin = '0' 'b' ['0' '1' '_']*
let hex = '0' 'x' ['0'-'9' 'a'-'f' 'A'-'F' '_']*
let dec = decdig ['0'-'9' '_']*
let exp = ['e''E']['-''+']? dec
let flo = (dec '.' dec (exp?)) | (dec exp)
@ -160,7 +161,7 @@ rule token = parse
| ">>>" { ASR }
| '~' { TILDE }
| '{' { LBRACE }
| '_' (dec as n) { IDX (int_of_string n) }
| '_' (decdig+ as n) { IDX (int_of_string n) }
| '_' { UNDERSCORE }
| '}' { RBRACE }