Eo: Add numbers highlighting.

syntax/eo.vim

@@ -38,6 +38,30 @@ syn region	eoBlock start="{" end="}" transparent fold
 
 syn region     eo_comment start="\/\*" end="\*\/" contains=@eoCommentGroup
 
+" Numbers
+"integer number, or floating point number without a dot and with "f".
+syn case ignore
+syn match	eoNumbers	display transparent "\<\d\|\.\d" contains=eoNumber,eoFloat,eoOctalError,eoOctal
+" Same, but without octal error (for comments)
+syn match	eoNumbersCom	display contained transparent "\<\d\|\.\d" contains=eoNumber,eoFloat,eoOctal
+syn match	eoNumber		display contained "\d\+\(u\=l\{0,2}\|ll\=u\)\>"
+"hex number
+syn match	eoNumber		display contained "0x\x\+\(u\=l\{0,2}\|ll\=u\)\>"
+" Flag the first zero of an octal number as something special
+syn match	eoOctal		display contained "0\o\+\(u\=l\{0,2}\|ll\=u\)\>" contains=eoOctalZero
+syn match	eoOctalZero	display contained "\<0"
+syn match	eoFloat		display contained "\d\+f"
+"floating point number, with dot, optional exponent
+syn match	eoFloat		display contained "\d\+\.\d*\(e[-+]\=\d\+\)\=[fl]\="
+"floating point number, starting with a dot, optional exponent
+syn match	eoFloat		display contained "\.\d\+\(e[-+]\=\d\+\)\=[fl]\=\>"
+"floating point number, without dot, with exponent
+syn match	eoFloat		display contained "\d\+e[-+]\=\d\+[fl]\=\>"
+
+" flag an octal number with wrong digits
+syn match	eoOctalError	display contained "0\o*[89]\d*"
+syn case match
+
 hi def link eoClassBodyLabels Label
 hi def link eoClassBodyBlockOpener Label
 hi def link eoInnerBlockOpener Label
@@ -50,6 +74,13 @@ hi def link eoConstants Constant
 hi def link className Identifier
 hi def link eoStatements Statement
 
+hi def link eoFloat Float
+hi def link eoOctal Number
+hi def link eoOctalZero Number
+hi def link eoNumber Number
+hi def link eoNumbers Number
+hi def link eoNumbersCom Number
+
 hi def link eoStructure Structure
 hi def link eoClassTypes Structure