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; The following code originates mostly from
; https://github.com/elixir-lang/tree-sitter-elixir, with minor edits to
; align the captures with helix. The following should be considered
; Copyright 2021 The Elixir Team
;
; Licensed under the Apache License, Version 2.0 (the "License");
; you may not use this file except in compliance with the License.
; You may obtain a copy of the License at
;
; https://www.apache.org/licenses/LICENSE-2.0
;
; Unless required by applicable law or agreed to in writing, software
; distributed under the License is distributed on an "AS IS" BASIS,
; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
; See the License for the specific language governing permissions and
; limitations under the License.
; Reserved keywords
["when" "and" "or" "not" "in" "not in" "fn" "do" "end" "catch" "rescue" "after" "else"] @keyword
; Operators
; * doc string
(unary_operator
operator: "@" @comment.block.documentation
operand: (call
target: (identifier) @comment.block.documentation.__attribute__
(arguments
[
(string) @comment.block.documentation
(charlist) @comment.block.documentation
(sigil
quoted_start: _ @comment.block.documentation
quoted_end: _ @comment.block.documentation) @comment.block.documentation
(boolean) @comment.block.documentation
]))
(#match? @comment.block.documentation.__attribute__ "^(moduledoc|typedoc|doc)$"))
; * module attribute
(unary_operator
operator: "@" @variable.property
operand: [
(identifier) @variable.property
(call
target: (identifier) @variable.property)
(boolean) @variable.property
(nil) @variable.property
])
; * capture operator
(unary_operator
operator: "&"
operand: [
(integer) @operator
(binary_operator
left: [
(call target: (dot left: (_) right: (identifier) @function))
(identifier) @function
] operator: "/" right: (integer) @operator)
])
(operator_identifier) @operator
(unary_operator
operator: _ @operator)
(binary_operator
operator: _ @operator)
(dot
operator: _ @operator)
(stab_clause
operator: _ @operator)
; Literals
(nil) @constant.builtin
(boolean) @constant.builtin.boolean
[
(integer)
(float)
] @number
(alias) @type
(call
target: (dot
left: (atom) @type))
(char) @constant.character
; Quoted content
(interpolation "#{" @punctuation.special "}" @punctuation.special) @embedded
(escape_sequence) @escape
[
(atom)
(quoted_atom)
(keyword)
(quoted_keyword)
] @string.special.symbol
[
(string)
(charlist)
] @string
; Note that we explicitly target sigil quoted start/end, so they are not overridden by delimiters
(sigil
(sigil_name) @__name__
quoted_start: _ @string
quoted_end: _ @string
(#match? @__name__ "^[sS]$")) @string
(sigil
(sigil_name) @__name__
quoted_start: _ @string.regexp
quoted_end: _ @string.regexp
(#match? @__name__ "^[rR]$")) @string.regexp
(sigil
(sigil_name) @__name__
quoted_start: _ @string.special
quoted_end: _ @string.special) @string.special
; Calls
; * definition keyword
(call
target: (identifier) @keyword
(#match? @keyword "^(def|defdelegate|defexception|defguard|defguardp|defimpl|defmacro|defmacrop|defmodule|defn|defnp|defoverridable|defp|defprotocol|defstruct)$"))
; * kernel or special forms keyword
(call
target: (identifier) @keyword
(#match? @keyword "^(alias|case|cond|else|for|if|import|quote|raise|receive|require|reraise|super|throw|try|unless|unquote|unquote_splicing|use|with)$"))
; * function call
(call
target: [
; local
(identifier) @function
; remote
(dot
right: (identifier) @function)
])
; * just identifier in function definition
(call
target: (identifier) @keyword
(arguments
[
(identifier) @function
(binary_operator
left: (identifier) @function
operator: "when")
])
(#match? @keyword "^(def|defdelegate|defguard|defguardp|defmacro|defmacrop|defn|defnp|defp)$"))
; * pipe into identifier (definition)
(call
target: (identifier) @keyword
(arguments
(binary_operator
operator: "|>"
right: (identifier) @variable))
(#match? @keyword "^(def|defdelegate|defguard|defguardp|defmacro|defmacrop|defn|defnp|defp)$"))
; * pipe into identifier (function call)
(binary_operator
operator: "|>"
right: (identifier) @function)
; Identifiers
; * special
(
(identifier) @constant.builtin
(#match? @constant.builtin "^(__MODULE__|__DIR__|__ENV__|__CALLER__|__STACKTRACE__)$")
)
; * unused
(
(identifier) @comment
(#match? @comment "^_")
)
; * regular
(identifier) @variable
; Comment
(comment) @comment
; Punctuation
[
"%"
] @punctuation
[
","
";"
] @punctuation.delimiter
[
"("
")"
"["
"]"
"{"
"}"
"<<"
">>"
] @punctuation.bracket
(ERROR) @warning
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