66 lines
4.4 KiB
Go
66 lines
4.4 KiB
Go
package lexers
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import (
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. "github.com/alecthomas/chroma" // nolint
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)
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// Erlang lexer.
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var Erlang = Register(MustNewLexer(
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&Config{
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Name: "Erlang",
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Aliases: []string{"erlang"},
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Filenames: []string{"*.erl", "*.hrl", "*.es", "*.escript"},
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MimeTypes: []string{"text/x-erlang"},
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},
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Rules{
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"root": {
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{`\s+`, Text, nil},
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{`%.*\n`, Comment, nil},
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{Words(``, `\b`, `after`, `begin`, `case`, `catch`, `cond`, `end`, `fun`, `if`, `let`, `of`, `query`, `receive`, `try`, `when`), Keyword, nil},
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{Words(``, `\b`, `abs`, `append_element`, `apply`, `atom_to_list`, `binary_to_list`, `bitstring_to_list`, `binary_to_term`, `bit_size`, `bump_reductions`, `byte_size`, `cancel_timer`, `check_process_code`, `delete_module`, `demonitor`, `disconnect_node`, `display`, `element`, `erase`, `exit`, `float`, `float_to_list`, `fun_info`, `fun_to_list`, `function_exported`, `garbage_collect`, `get`, `get_keys`, `group_leader`, `hash`, `hd`, `integer_to_list`, `iolist_to_binary`, `iolist_size`, `is_atom`, `is_binary`, `is_bitstring`, `is_boolean`, `is_builtin`, `is_float`, `is_function`, `is_integer`, `is_list`, `is_number`, `is_pid`, `is_port`, `is_process_alive`, `is_record`, `is_reference`, `is_tuple`, `length`, `link`, `list_to_atom`, `list_to_binary`, `list_to_bitstring`, `list_to_existing_atom`, `list_to_float`, `list_to_integer`, `list_to_pid`, `list_to_tuple`, `load_module`, `localtime_to_universaltime`, `make_tuple`, `md5`, `md5_final`, `md5_update`, `memory`, `module_loaded`, `monitor`, `monitor_node`, `node`, `nodes`, `open_port`, `phash`, `phash2`, `pid_to_list`, `port_close`, `port_command`, `port_connect`, `port_control`, `port_call`, `port_info`, `port_to_list`, `process_display`, `process_flag`, `process_info`, `purge_module`, `put`, `read_timer`, `ref_to_list`, `register`, `resume_process`, `round`, `send`, `send_after`, `send_nosuspend`, `set_cookie`, `setelement`, `size`, `spawn`, `spawn_link`, `spawn_monitor`, `spawn_opt`, `split_binary`, `start_timer`, `statistics`, `suspend_process`, `system_flag`, `system_info`, `system_monitor`, `system_profile`, `term_to_binary`, `tl`, `trace`, `trace_delivered`, `trace_info`, `trace_pattern`, `trunc`, `tuple_size`, `tuple_to_list`, `universaltime_to_localtime`, `unlink`, `unregister`, `whereis`), NameBuiltin, nil},
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{Words(``, `\b`, `and`, `andalso`, `band`, `bnot`, `bor`, `bsl`, `bsr`, `bxor`, `div`, `not`, `or`, `orelse`, `rem`, `xor`), OperatorWord, nil},
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{`^-`, Punctuation, Push("directive")},
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{`(\+\+?|--?|\*|/|<|>|/=|=:=|=/=|=<|>=|==?|<-|!|\?)`, Operator, nil},
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{`"`, LiteralString, Push("string")},
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{`<<`, NameLabel, nil},
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{`>>`, NameLabel, nil},
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{`((?:[a-z]\w*|'[^\n']*[^\\]'))(:)`, ByGroups(NameNamespace, Punctuation), nil},
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{`(?:^|(?<=:))((?:[a-z]\w*|'[^\n']*[^\\]'))(\s*)(\()`, ByGroups(NameFunction, Text, Punctuation), nil},
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{`[+-]?(?:[2-9]|[12][0-9]|3[0-6])#[0-9a-zA-Z]+`, LiteralNumberInteger, nil},
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{`[+-]?\d+`, LiteralNumberInteger, nil},
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{`[+-]?\d+.\d+`, LiteralNumberFloat, nil},
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{`[]\[:_@\".{}()|;,]`, Punctuation, nil},
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{`(?:[A-Z_]\w*)`, NameVariable, nil},
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{`(?:[a-z]\w*|'[^\n']*[^\\]')`, Name, nil},
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{`\?(?:(?:[A-Z_]\w*)|(?:[a-z]\w*|'[^\n']*[^\\]'))`, NameConstant, nil},
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{`\$(?:(?:\\(?:[bdefnrstv\'"\\]|[0-7][0-7]?[0-7]?|(?:x[0-9a-fA-F]{2}|x\{[0-9a-fA-F]+\})|\^[a-zA-Z]))|\\[ %]|[^\\])`, LiteralStringChar, nil},
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{`#(?:[a-z]\w*|'[^\n']*[^\\]')(:?\.(?:[a-z]\w*|'[^\n']*[^\\]'))?`, NameLabel, nil},
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{`\A#!.+\n`, CommentHashbang, nil},
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{`#\{`, Punctuation, Push("map_key")},
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},
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"string": {
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{`(?:\\(?:[bdefnrstv\'"\\]|[0-7][0-7]?[0-7]?|(?:x[0-9a-fA-F]{2}|x\{[0-9a-fA-F]+\})|\^[a-zA-Z]))`, LiteralStringEscape, nil},
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{`"`, LiteralString, Pop(1)},
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{`~[0-9.*]*[~#+BPWXb-ginpswx]`, LiteralStringInterpol, nil},
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{`[^"\\~]+`, LiteralString, nil},
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{`~`, LiteralString, nil},
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},
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"directive": {
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{`(define)(\s*)(\()((?:(?:[A-Z_]\w*)|(?:[a-z]\w*|'[^\n']*[^\\]')))`, ByGroups(NameEntity, Text, Punctuation, NameConstant), Pop(1)},
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{`(record)(\s*)(\()((?:(?:[A-Z_]\w*)|(?:[a-z]\w*|'[^\n']*[^\\]')))`, ByGroups(NameEntity, Text, Punctuation, NameLabel), Pop(1)},
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{`(?:[a-z]\w*|'[^\n']*[^\\]')`, NameEntity, Pop(1)},
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},
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"map_key": {
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Include("root"),
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{`=>`, Punctuation, Push("map_val")},
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{`:=`, Punctuation, Push("map_val")},
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{`\}`, Punctuation, Pop(1)},
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},
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"map_val": {
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Include("root"),
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{`,`, Punctuation, Pop(1)},
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{`(?=\})`, Punctuation, Pop(1)},
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},
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},
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))
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