zig: Detect visual separators in integer literals

Zig docs: "// underscores may be placed between two digits as a visual separator"
alecthomas · Oct 30, 2020 · 9b3cf51 · 9b3cf51
1 parent e3a674c
commit 9b3cf51
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/lexers/z/zig.go b/lexers/z/zig.go
@@ -30,10 +30,10 @@ var Zig = internal.Register(MustNewLexer(
 			{`0x[0-9a-fA-F]+\.?[pP][\-+]?[0-9a-fA-F]+`, LiteralNumberFloat, nil},
 			{`[0-9]+\.[0-9]+([eE][-+]?[0-9]+)?`, LiteralNumberFloat, nil},
 			{`[0-9]+\.?[eE][-+]?[0-9]+`, LiteralNumberFloat, nil},
-			{`0b[01]+`, LiteralNumberBin, nil},
-			{`0o[0-7]+`, LiteralNumberOct, nil},
-			{`0x[0-9a-fA-F]+`, LiteralNumberHex, nil},
-			{`[0-9]+`, LiteralNumberInteger, nil},
+			{`0b(?:_?[01])+`, LiteralNumberBin, nil},
+			{`0o(?:_?[0-7])+`, LiteralNumberOct, nil},
+			{`0x(?:_?[0-9a-fA-F])+`, LiteralNumberHex, nil},
+			{`(?:_?[0-9])+`, LiteralNumberInteger, nil},
 			{`@[a-zA-Z_]\w*`, NameBuiltin, nil},
 			{`[a-zA-Z_]\w*`, Name, nil},
 			{`\'\\\'\'`, LiteralStringEscape, nil},