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add tree-sitter-erlang #1657

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Feb 15, 2022
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3 changes: 3 additions & 0 deletions .gitmodules
Original file line number Diff line number Diff line change
Expand Up @@ -226,3 +226,6 @@
path = helix-syntax/languages/tree-sitter-rescript
url = https://github.com/jaredramirez/tree-sitter-rescript
shallow = true
[submodule "helix-syntax/languages/tree-sitter-erlang"]
path = helix-syntax/languages/tree-sitter-erlang
url = https://github.com/the-mikedavis/tree-sitter-erlang
1 change: 1 addition & 0 deletions book/src/generated/lang-support.md
Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@
| dockerfile | ✓ | | | `docker-langserver` |
| elixir | ✓ | | | `elixir-ls` |
| elm | ✓ | | | `elm-language-server` |
| erlang | ✓ | | | |
| fish | ✓ | ✓ | ✓ | |
| git-commit | ✓ | | | |
| git-config | ✓ | | | |
Expand Down
1 change: 1 addition & 0 deletions helix-syntax/languages/tree-sitter-erlang
Submodule tree-sitter-erlang added at 86985b
9 changes: 9 additions & 0 deletions languages.toml
Original file line number Diff line number Diff line change
Expand Up @@ -613,3 +613,12 @@ auto-format = true
comment-token = "//"
language-server = { command = "rescript-language-server", args = ["--stdio"] }
indent = { tab-width = 2, unit = " " }

[[language]]
name = "erlang"
scope = "source.erlang"
injection-regex = "^erl$"
file-types = ["erl", "hrl", "app", "rebar.config"]
roots = ["rebar.config"]
comment-token = "%%"
indent = { tab-width = 4, unit = " " }
118 changes: 118 additions & 0 deletions runtime/queries/erlang/highlights.scm
Original file line number Diff line number Diff line change
@@ -0,0 +1,118 @@
; Attributes
; module declaration
(attribute
name: (atom) @keyword
(arguments (atom) @module)
(#eq? @keyword "module"))

(attribute
name: (atom) @keyword
(arguments
.
(atom) @module)
(#eq? @keyword "import"))

(attribute
name: (atom) @keyword
(arguments
.
(atom) @type
[
(tuple (atom) @variable.other.member)
(tuple
(binary_operator
left: (atom) @variable.other.member
operator: "="))
(tuple
(binary_operator
left:
(binary_operator
left: (atom) @variable.other.member
operator: "=")
operator: "::"))
])
(#eq? @keyword "record"))

(attribute
name: (atom) @keyword
(arguments
.
[
(atom) @keyword.directive
(variable) @keyword.directive
(call
function:
[(variable) (atom)] @keyword.directive)
])
(#eq? @keyword "define"))

(attribute
name: (atom) @keyword
module: (atom) @module
(#eq? @keyword "spec"))

; Functions
(function name: (atom) @function)
(call module: (atom) @module)
(call function: (atom) @function)
(stab_clause name: (atom) @function)
(function_capture module: (atom) @module)
(function_capture function: (atom) @function)

; Records
(record_content
(binary_operator
left: (atom) @variable.other.member
operator: "="))

(record field: (atom) @variable.other.member)
(record name: (atom) @type)

; Keywords
((attribute name: (atom) @keyword)
(#match?
@keyword
"^(define|export|export_type|include|include_lib|ifdef|ifndef|if|elif|else|endif|vsn|on_load|behaviour|record|file|type|opaque|spec)$"))

["case" "fun" "if" "of" "when" "end" "receive" "try" "catch" "after"] @keyword

; Operators
(binary_operator
left: (atom) @function
operator: "/"
right: (integer) @constant.numeric.integer)

(binary_operator operator: _ @operator)
(unary_operator operator: _ @operator)
["/" ":" "#" "->"] @operator

; Comments
((variable) @comment.discard
(#match? @comment.discard "^_"))

(tripledot) @comment.discard

(comment) @comment

; Macros
(macro
"?"+ @keyword.directive
name: (_) @keyword.directive)

; Basic types
(variable) @variable
[
(atom)
(quoted_atom)
] @string.special.symbol
(string) @string
(character) @constant.character

(integer) @constant.numeric.integer
(float) @constant.numeric.float

; Punctuation
["," "." "-" ";"] @punctuation.delimiter
["(" ")" "{" "}" "[" "]" "<<" ">>"] @punctuation.bracket

; (ERROR) @error
2 changes: 2 additions & 0 deletions runtime/queries/erlang/injections.scm
Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
((comment) @injection.content
(#set! injection.language "comment"))