1package r
 2
 3import (
 4	. "github.com/alecthomas/chroma" // nolint
 5	"github.com/alecthomas/chroma/lexers/internal"
 6)
 7
 8// Rexx lexer.
 9var Rexx = internal.Register(MustNewLexer(
10	&Config{
11		Name:            "Rexx",
12		Aliases:         []string{"rexx", "arexx"},
13		Filenames:       []string{"*.rexx", "*.rex", "*.rx", "*.arexx"},
14		MimeTypes:       []string{"text/x-rexx"},
15		NotMultiline:    true,
16		CaseInsensitive: true,
17	},
18	Rules{
19		"root": {
20			{`\s`, TextWhitespace, nil},
21			{`/\*`, CommentMultiline, Push("comment")},
22			{`"`, LiteralString, Push("string_double")},
23			{`'`, LiteralString, Push("string_single")},
24			{`[0-9]+(\.[0-9]+)?(e[+-]?[0-9])?`, LiteralNumber, nil},
25			{`([a-z_]\w*)(\s*)(:)(\s*)(procedure)\b`, ByGroups(NameFunction, TextWhitespace, Operator, TextWhitespace, KeywordDeclaration), nil},
26			{`([a-z_]\w*)(\s*)(:)`, ByGroups(NameLabel, TextWhitespace, Operator), nil},
27			Include("function"),
28			Include("keyword"),
29			Include("operator"),
30			{`[a-z_]\w*`, Text, nil},
31		},
32		"function": {
33			{Words(``, `(\s*)(\()`, `abbrev`, `abs`, `address`, `arg`, `b2x`, `bitand`, `bitor`, `bitxor`, `c2d`, `c2x`, `center`, `charin`, `charout`, `chars`, `compare`, `condition`, `copies`, `d2c`, `d2x`, `datatype`, `date`, `delstr`, `delword`, `digits`, `errortext`, `form`, `format`, `fuzz`, `insert`, `lastpos`, `left`, `length`, `linein`, `lineout`, `lines`, `max`, `min`, `overlay`, `pos`, `queued`, `random`, `reverse`, `right`, `sign`, `sourceline`, `space`, `stream`, `strip`, `substr`, `subword`, `symbol`, `time`, `trace`, `translate`, `trunc`, `value`, `verify`, `word`, `wordindex`, `wordlength`, `wordpos`, `words`, `x2b`, `x2c`, `x2d`, `xrange`), ByGroups(NameBuiltin, TextWhitespace, Operator), nil},
34		},
35		"keyword": {
36			{`(address|arg|by|call|do|drop|else|end|exit|for|forever|if|interpret|iterate|leave|nop|numeric|off|on|options|parse|pull|push|queue|return|say|select|signal|to|then|trace|until|while)\b`, KeywordReserved, nil},
37		},
38		"operator": {
39			{`(-|//|/|\(|\)|\*\*|\*|\\<<|\\<|\\==|\\=|\\>>|\\>|\\|\|\||\||&&|&|%|\+|<<=|<<|<=|<>|<|==|=|><|>=|>>=|>>|>|¬<<|¬<|¬==|¬=|¬>>|¬>|¬|\.|,)`, Operator, nil},
40		},
41		"string_double": {
42			{`[^"\n]+`, LiteralString, nil},
43			{`""`, LiteralString, nil},
44			{`"`, LiteralString, Pop(1)},
45			{`\n`, Text, Pop(1)},
46		},
47		"string_single": {
48			{`[^\'\n]`, LiteralString, nil},
49			{`\'\'`, LiteralString, nil},
50			{`\'`, LiteralString, Pop(1)},
51			{`\n`, Text, Pop(1)},
52		},
53		"comment": {
54			{`[^*]+`, CommentMultiline, nil},
55			{`\*/`, CommentMultiline, Pop(1)},
56			{`\*`, CommentMultiline, nil},
57		},
58	},
59))