Merge pull request #9 from pcaversaccio/hex-literals

Add support for native hex string literals

note that hex and bytestrings are already highlighted under the String rule, but this PR just adds explicit rules for them

Author: charles-cooper

syntax/vyper.vim

@@ -71,9 +71,12 @@ syn match vyperNumber "\<\d\>" display
 syn match vyperNumber "\<[1-9]\d\+\>" display
 syn match vyperNumberError "\<0\d\+\>" display
 syn match vyperHex "\<0x\x\{2,64}\>" display
+syn match vyperHexLiteral "\<x\"\x\+\"\>" display
+syn match vyperByteString "\<b\"[^\"]*\"\>" display
 syn match vyperAddress "\<0x\x\{40}\>" display
 syn match vyperHexLiteralError "\<0x\x\{65,}\>" display
 syn match vyperHexLiteralError "\<0x\x*\X\+.\+\>" display
+syn match vyperHexLiteralError "\<x\"\x*[^0-9A-Fa-f\"]\+.*\"\>" display
 syn match vyperDecimal "\<\d*\.\d\+\>" display
 
 "String literals
@@ -116,6 +119,8 @@ hi link vyperTypes Type
 hi link vyperNumber Number
 hi link vyperAddress Number
 hi link vyperHex Number
+hi link vyperHexLiteral String
+hi link vyperByteString String
 hi link vyperHexLiteralError Error
 hi link vyperDecimal Float
 hi link vyperFunction Function