; Comprehensive SCL highlight queries for Neovim

; ============================================
; Comments
; ============================================
(line_comment) @comment
(block_comment) @comment
(c_style_comment) @comment

; ============================================
; Literals
; ============================================
(number) @number
(hex_number) @number
(string) @string
(time_value) @number

; ============================================
; Constants
; ============================================
(
  (identifier) @constant.builtin
  (#match? @constant.builtin "^(TRUE|FALSE|TRUE#|FALSE#)$")
)
(
  (type) @type.builtin
  (#match? @type.builtin "^(TRUE|FALSE)$")
)

; ============================================
; Identifiers
; ============================================
(identifier) @variable
(prefixed_identifier) @variable

; ============================================
; Types - Basic
; ============================================
(
  (type) @type.builtin
  (#match? @type.builtin "^(BOOL|Bool|INT|Int|DINT|DInt|SINT|SInt|USINT|USInt|UINT|UInt|WORD|Word|DWORD|DWord|BYTE|Byte|REAL|Real|LREAL|LReal|TIME|Time|TOD|Tod|DT|Dt|String|STRING|CHAR|Char|WSTRING|WString)$")
)

; Types - User defined (quoted strings like "UDT_Type")
(type
  (string) @type
)

; ============================================
; Keywords - Block definitions
; ============================================
"ORGANIZATION_BLOCK" @keyword
"FUNCTION_BLOCK" @keyword
"FUNCTION" @keyword
"END_ORGANIZATION_BLOCK" @keyword
"END_FUNCTION_BLOCK" @keyword
"END_FUNCTION" @keyword
"BEGIN" @keyword

; ============================================
; Keywords - Variable sections
; ============================================
"VAR_INPUT" @keyword
"VAR_OUTPUT" @keyword
"VAR_IN_OUT" @keyword
"VAR" @keyword
"VAR_TEMP" @keyword
"VAR_CONSTANT" @keyword
"END_VAR" @keyword
"CONSTANT" @keyword
"RETAIN" @keyword
"NON_RETAIN" @keyword

; ============================================
; Keywords - Control flow
; ============================================
"IF" @conditional
"THEN" @conditional
"ELSIF" @conditional
"ELSE" @conditional
"END_IF" @conditional
"CASE" @conditional
"OF" @conditional
"END_CASE" @conditional

; ============================================
; Keywords - Loops
; ============================================
"FOR" @repeat
"TO" @repeat
"BY" @repeat
"DO" @repeat
"END_FOR" @repeat
"WHILE" @repeat
"END_WHILE" @repeat
"REPEAT" @repeat
"UNTIL" @repeat
"END_REPEAT" @repeat
"EXIT" @keyword
"CONTINUE" @keyword

; ============================================
; Keywords - Regions
; ============================================
"REGION" @namespace
"END_REGION" @namespace

; ============================================
; Keywords - Other
; ============================================
"TITLE" @keyword
"VERSION" @keyword
"ARRAY" @keyword
"OF" @keyword

; ============================================
; Fields
; ============================================
(block
  name: (string) @namespace)

(block
  name: (identifier) @namespace)

(var_item
  name: (identifier) @property)

(var_item
  type: (type) @type)

; ============================================
; Functions and function calls
; ============================================
(function_call
  (identifier) @function.call)

(function_call
  (string) @function.call)

(parameter
  (identifier) @parameter)

; ============================================
; Array access
; ============================================
(array_access
  "[" @punctuation.bracket
  "]" @punctuation.bracket)

; ============================================
; Field access
; ============================================
(field_access
  "." @punctuation.delimiter)

; ============================================
; Attribute lists
; ============================================
(attribute_list
  "{" @punctuation.bracket
  "}" @punctuation.bracket)

(attribute_list
  "," @punctuation.delimiter)

(attribute_list
  ";" @punctuation.delimiter)

(attribute
  (identifier) @property)

; ============================================
; Operators - Logical
; ============================================
"AND" @operator
"OR" @operator
"XOR" @operator
"NOT" @operator

; ============================================
; Operators - Comparison
; ============================================
"=" @operator
"<>" @operator
"<" @operator
">" @operator
"<=" @operator
">=" @operator

; ============================================
; Operators - Arithmetic
; ============================================
"+" @operator
"-" @operator
"*" @operator
"/" @operator
"MOD" @operator
"**" @operator

; ============================================
; Operators - Assignment
; ============================================
":=" @operator
"=>" @operator

; ============================================
; Punctuation
; ============================================
";" @punctuation.delimiter
":" @punctuation.delimiter
"," @punctuation.delimiter
"(" @punctuation.bracket
")" @punctuation.bracket
"[" @punctuation.bracket
"]" @punctuation.bracket
"." @punctuation.delimiter
".." @punctuation.delimiter
"#" @punctuation.special

; ============================================
; Binary and unary expressions
; ============================================
(binary_expression) @operator
(unary_expression) @operator

; ============================================
; Range expressions
; ============================================
(range
  ".." @punctuation.delimiter)