; Enhanced HDL syntax highlighting based on actual usage patterns

; Main keywords
"CHIP" @keyword
"IN" @keyword
"OUT" @keyword
"PARTS" @keyword
"BUILTIN" @keyword
"CLOCKED" @keyword

; Section headers
(in_section) @keyword
(out_section) @keyword
(parts_body) @keyword

; Chip definition
(chip_definition
  name: (identifier) @type) @type

; Pin definitions with proper field highlighting
(in_section
  input_pin_name: (identifier) @variable.parameter) @variable.parameter

(out_section
  output_pin_name: (identifier) @variable.parameter) @variable.parameter

; Bus identifiers (arrays)
(bus_identifier
  (identifier) @variable
  "[" @punctuation.bracket
  (number) @constant.numeric
  "]" @punctuation.bracket) @variable

; Part instantiations
(part
  chip_name: (identifier) @function) @function

; Connections
(connection
  part_pin: (identifier) @variable.parameter
  "=" @operator
  chip_pin: (identifier) @variable) @variable

; Built-in chip references
(builtin_body
  chip_name: (identifier) @function.builtin) @function.builtin

; Clocked body
(clocked_body
  (identifier) @variable) @variable

; Comments (both single-line and multi-line)
(comment) @comment

; Numbers
(number) @constant.numeric

; Identifiers (general)
(identifier) @variable

; Punctuation
"," @punctuation.delimiter
";" @punctuation.delimiter
":" @punctuation.delimiter
"(" @punctuation.bracket
")" @punctuation.bracket
"[" @punctuation.bracket
"]" @punctuation.bracket
"{" @punctuation.bracket
"}" @punctuation.bracket
"=" @operator

; Special highlighting for common HDL patterns
; Bit width specifications (simplified - no regex matching)
(bus_identifier
  (identifier) @type)

; Common built-in chips (simplified - no regex matching)
(identifier) @function.builtin
  (#any-of? @function.builtin "Nand" "Not" "And" "Or" "Xor" "Mux" "DMux" "Not16" "And16" "Or16" "Xor16" "Mux16" "DMux16" "Mux4Way16" "Mux8Way16" "DMux4Way" "DMux8Way" "Or8Way" "HalfAdder" "FullAdder" "Add16" "Inc16" "ALU" "Bit" "Register" "PC" "RAM8" "RAM64" "RAM512" "RAM4K" "RAM16K" "ROM32K" "Screen" "Keyboard" "DFF" "ARegister" "DRegister")

; Common control signals (simplified - no regex matching)
(identifier) @variable.builtin
  (#any-of? @variable.builtin "load" "sel" "in" "out" "reset" "inc" "true" "false" "a" "b" "c" "d" "e" "f" "g" "h" "x" "y" "zx" "nx" "zy" "ny" "f" "no" "zr" "ng" "pos" "neg" "zero" "one" "minus_one")

; Memory address patterns (simplified - no regex matching)
(identifier) @variable.parameter
  (#any-of? @variable.parameter "address" "load" "write" "read" "data" "value" "input" "output" "control" "enable" "disable" "clock" "reset" "clear" "set" "toggle")