awk.go

Documentation: github.com/alecthomas/chroma/lexers/a

     1  package a
     2  
     3  import (
     4  	. "github.com/alecthomas/chroma" // nolint
     5  	"github.com/alecthomas/chroma/lexers/internal"
     6  )
     7  
     8  // Awk lexer.
     9  var Awk = internal.Register(MustNewLazyLexer(
    10  	&Config{
    11  		Name:      "Awk",
    12  		Aliases:   []string{"awk", "gawk", "mawk", "nawk"},
    13  		Filenames: []string{"*.awk"},
    14  		MimeTypes: []string{"application/x-awk"},
    15  	},
    16  	awkRules,
    17  ))
    18  
    19  func awkRules() Rules {
    20  	return Rules{
    21  		"commentsandwhitespace": {
    22  			{`\s+`, Text, nil},
    23  			{`#.*$`, CommentSingle, nil},
    24  		},
    25  		"slashstartsregex": {
    26  			Include("commentsandwhitespace"),
    27  			{`/(\\.|[^[/\\\n]|\[(\\.|[^\]\\\n])*])+/\B`, LiteralStringRegex, Pop(1)},
    28  			{`(?=/)`, Text, Push("#pop", "badregex")},
    29  			Default(Pop(1)),
    30  		},
    31  		"badregex": {
    32  			{`\n`, Text, Pop(1)},
    33  		},
    34  		"root": {
    35  			{`^(?=\s|/)`, Text, Push("slashstartsregex")},
    36  			Include("commentsandwhitespace"),
    37  			{`\+\+|--|\|\||&&|in\b|\$|!?~|\|&|(\*\*|[-<>+*%\^/!=|])=?`, Operator, Push("slashstartsregex")},
    38  			{`[{(\[;,]`, Punctuation, Push("slashstartsregex")},
    39  			{`[})\].]`, Punctuation, nil},
    40  			{`(break|continue|do|while|exit|for|if|else|return|switch|case|default)\b`, Keyword, Push("slashstartsregex")},
    41  			{`function\b`, KeywordDeclaration, Push("slashstartsregex")},
    42  			{`(atan2|cos|exp|int|log|rand|sin|sqrt|srand|gensub|gsub|index|length|match|split|patsplit|sprintf|sub|substr|tolower|toupper|close|fflush|getline|next(file)|print|printf|strftime|systime|mktime|delete|system|strtonum|and|compl|lshift|or|rshift|asorti?|isarray|bindtextdomain|dcn?gettext|@(include|load|namespace))\b`, KeywordReserved, nil},
    43  			{`(ARGC|ARGIND|ARGV|BEGIN(FILE)?|BINMODE|CONVFMT|ENVIRON|END(FILE)?|ERRNO|FIELDWIDTHS|FILENAME|FNR|FPAT|FS|IGNORECASE|LINT|NF|NR|OFMT|OFS|ORS|PROCINFO|RLENGTH|RS|RSTART|RT|SUBSEP|TEXTDOMAIN)\b`, NameBuiltin, nil},
    44  			{`[@$a-zA-Z_]\w*`, NameOther, nil},
    45  			{`[0-9][0-9]*\.[0-9]+([eE][0-9]+)?[fd]?`, LiteralNumberFloat, nil},
    46  			{`0x[0-9a-fA-F]+`, LiteralNumberHex, nil},
    47  			{`[0-9]+`, LiteralNumberInteger, nil},
    48  			{`"(\\\\|\\"|[^"])*"`, LiteralStringDouble, nil},
    49  			{`'(\\\\|\\'|[^'])*'`, LiteralStringSingle, nil},
    50  		},
    51  	}
    52  }
    53
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