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; Keywords
"alias" @keyword
"and" @keyword
"begin" @keyword
"break" @keyword
"case" @conditional
"class" @keyword
"def" @keyword
"do" @keyword
"else" @conditional
"elsif" @conditional
"end" @keyword
"ensure" @keyword
"for" @repeat
"if" @conditional
"in" @keyword
"module" @keyword
"next" @keyword
"or" @keyword
"rescue" @keyword
"retry" @keyword
"return" @keyword
"then" @keyword
"unless" @conditional
"until" @repeat
"when" @conditional
"while" @repeat
"yield" @keyword
((identifier) @keyword
(#match? @keyword "^(private|protected|public)$"))
; Function calls
((identifier) @function
(#eq? @function "require"))
"defined?" @function
(call
receiver: (constant) @constant)
(method_call
receiver: (constant) @constant)
(call
method: (identifier) @function)
(method_call
method: (identifier) @function)
(call
method: (constant) @function)
(method_call
method: (constant) @function)
; Function definitions
(alias (identifier) @function)
(setter (identifier) @function)
(method name: (identifier) @function)
(method name: (constant) @constant)
(class name: (constant) @constant)
(singleton_method name: (identifier) @function)
(singleton_method name: (constant) @constant)
; Identifiers
(class_variable) @label
(instance_variable) @label
((identifier) @constant.builtin
(#match? @constant.builtin "^__(FILE|LINE|ENCODING)__$"))
((constant) @constant.macro
(#match? @constant.macro "^[A-Z\\d_]+$"))
(constant) @constant
(self) @constant.builtin
(super) @constant.builtin
(method_parameters (identifier) @parameter)
(lambda_parameters (identifier) @parameter)
(block_parameters (identifier) @parameter)
(splat_parameter (identifier) @parameter)
(hash_splat_parameter (identifier) @parameter)
(optional_parameter (identifier) @parameter)
(destructured_parameter (identifier) @parameter)
(block_parameter (identifier) @parameter)
(keyword_parameter (identifier) @parameter)
; TODO: Re-enable this once it is supported
; ((identifier) @function
; (#is-not? local))
; Literals
(string) @string
(bare_string) @string
(bare_symbol) @constant
(subshell) @string
(heredoc_beginning) @constant
(heredoc_body) @string
(heredoc_end) @constant
(symbol) @constant
(regex) @string.regex
(escape_sequence) @string.escape
(integer) @number
(float) @float
(nil) @boolean
(true) @boolean
(false) @boolean
(interpolation
"#{" @punctuation.bracket
"}" @punctuation.bracket) @embedded
(comment) @comment
; Operators
"=" @operator
"=>" @operator
"->" @operator
"+" @operator
"-" @operator
"*" @operator
"/" @operator
"," @punctuation.delimiter
";" @punctuation.delimiter
"." @punctuation.delimiter
"(" @punctuation.bracket
")" @punctuation.bracket
"[" @punctuation.bracket
"]" @punctuation.bracket
"{" @punctuation.bracket
"}" @punctuation.bracket
"%w(" @punctuation.bracket
"%i(" @punctuation.bracket
(ERROR) @error
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