7 - identifier: "\\b[A-Z_][0-9A-Z_]+\\b"
10 - type: "\\b((s?size)|((u_?)?int(8|16|32|64|ptr)))_t\\b"
13 - constant: "(?i)\\b(HIGH|LOW|INPUT|OUTPUT)\\b"
16 - constant: "(?i)\\b(DEC|BIN|HEX|OCT|BYTE)\\b"
19 - constant: "(?i)\\b(PI|HALF_PI|TWO_PI)\\b"
22 - constant: "(?i)\\b(LSBFIRST|MSBFIRST)\\b"
25 - constant: "(?i)\\b(CHANGE|FALLING|RISING)\\b"
28 - constant: "(?i)\\b(DEFAULT|EXTERNAL|INTERNAL|INTERNAL1V1|INTERNAL2V56)\\b"
30 ## === FUNCTIONS === ##
33 - type: "\\b(boolean|byte|char|float|int|long|word)\\b"
36 - statement: "\\b(case|class|default|do|double|else|false|for|if|new|null|private|protected|public|short|signed|static|String|switch|this|throw|try|true|unsigned|void|while)\\b"
37 - statement: "\\b(goto|continue|break|return)\\b"
40 - identifier: "\\b(abs|acos|asin|atan|atan2|ceil|constrain|cos|degrees|exp|floor|log|map|max|min|radians|random|randomSeed|round|sin|sq|sqrt|tan)\\b"
43 - identifier: "\\b(bitRead|bitWrite|bitSet|bitClear|bit|highByte|lowByte)\\b"
46 - identifier: "\\b(analogReference|analogRead|analogWrite)\\b"
48 ## External Interrupts
49 - identifier: "\\b(attachInterrupt|detachInterrupt)\\b"
52 - identifier: "\\b(delay|delayMicroseconds|millis|micros)\\b"
55 - identifier: "\\b(pinMode|digitalWrite|digitalRead)\\b"
58 - identifier: "\\b(interrupts|noInterrupts)\\b"
61 - identifier: "\\b(noTone|pulseIn|shiftIn|shiftOut|tone)\\b"
64 - identifier: "\\b(Serial|Serial1|Serial2|Serial3|begin|end|peek|read|print|println|available|flush)\\b"
67 - identifier: "\\b(setup|loop)\\b"
70 - statement: "^[[:space:]]*#[[:space:]]*(define|include(_next)?|(un|ifn?)def|endif|el(if|se)|if|warning|error|pragma)"
73 - constant: "(__attribute__[[:space:]]*\\(\\([^)]*\\)\\)|__(aligned|asm|builtin|hidden|inline|packed|restrict|section|typeof|weak)__)"
79 - constant.specialChar: "\\\\."
86 - constant.specialChar: "\\\\."
92 - todo: "(TODO|XXX|FIXME):?"
98 - todo: "(TODO|XXX|FIXME):?"