root/regexper-static
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Reducing duplication in grammar

Browse Source
This commit is contained in:
Jeff Avallone 2014-12-22 16:26:08 -05:00
parent 281ca50d32
commit 9e6f066763
1 changed files with 21 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/js/parser/javascript/grammar.peg
View File

@ -24,18 +24,18 @@ grammar JavascriptRegexp
/ charset_literal <Literal>
charset_escape <- "\\" esc:(
code:[bdDfnrsStvwW] arg:""?
/ code:"c" arg:[a-zA-Z]
/ code:"0" arg:[0-7]+
/ code:"x" arg:( [0-9a-fA-F] [0-9a-fA-F] )
/ code:"u" arg:( [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] )
/ code:"0" arg:""? )
/ control_escape
/ octal_escape
/ hex_escape
/ unicode_escape
/ null_escape )
charset_range_escape <- "\\" esc:(
code:[bfnrtv] arg:""?
/ code:"c" arg:[a-zA-Z]
/ code:"0" arg:[0-7]+
/ code:"x" arg:( [0-9a-fA-F] [0-9a-fA-F] )
/ code:"u" arg:( [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] )
/ code:"0" arg:""? )
/ control_escape
/ octal_escape
/ hex_escape
/ unicode_escape
/ null_escape )
charset_literal <- ( ""? literal:[^\\\]] )
/ ( literal:"\\" &"c" )
/ ( "\\" literal:[^bdDfnrsStvwW] )
@ -44,11 +44,17 @@ grammar JavascriptRegexp
/ literal <Literal>
escape <- "\\" esc:(
code:[bBdDfnrsStvwW1-9] arg:""?
/ code:"c" arg:[a-zA-Z]
/ code:"0" arg:[0-7]+
/ code:"x" arg:( [0-9a-fA-F] [0-9a-fA-F] )
/ code:"u" arg:( [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] )
/ code:"0" arg:""? )
/ control_escape
/ octal_escape
/ hex_escape
/ unicode_escape
/ null_escape )
literal <- ( ""? literal:[^|\\/.\[\(\)?+*$^] )
/ ( literal:"\\" &"c" )
/ ( "\\" literal:. )
control_escape <- code:"c" arg:[a-zA-Z]
octal_escape <- code:"0" arg:[0-7]+
hex_escape <- code:"x" arg:( [0-9a-fA-F] [0-9a-fA-F] )
unicode_escape <- code:"u" arg:( [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] )
null_escape <- code:"0" arg:""?