Viewing github.com/alecthomas/chroma/lexers/embedded/arduino.xml

```
<lexer>
```
```
  <config>
```
```
    <name>Arduino</name>
```
```
    <alias>arduino</alias>
```
```
    <filename>*.ino</filename>
```

    <mime_type>text/x-arduino</mime_type>

```
    <ensure_nl>true</ensure_nl>
```
```
  </config>
```
```
  <rules>
```
```
    <state name="whitespace">
```
```
      <rule pattern="^#if\s+0">
```
```
        <token type="CommentPreproc"/>
```
```
        <push state="if0"/>
```
```
      </rule>
```
```
      <rule pattern="^#">
```
```
        <token type="CommentPreproc"/>
```
```
        <push state="macro"/>
```
```
      </rule>
```

      <rule pattern="^(\s*(?:/[*].*?[*]/\s*)?)(#if\s+0)">

```
        <bygroups>
```
```
          <usingself state="root"/>
```

          <token type="CommentPreproc"/>

```
        </bygroups>
```
```
        <push state="if0"/>
```
```
      </rule>
```

      <rule pattern="^(\s*(?:/[*].*?[*]/\s*)?)(#)">

```
        <bygroups>
```
```
          <usingself state="root"/>
```

          <token type="CommentPreproc"/>

```
        </bygroups>
```
```
        <push state="macro"/>
```
```
      </rule>
```
```
      <rule pattern="\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\s+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\\\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```

      <rule pattern="//(\n|[\w\W]*?[^\\]\n)">

```
        <token type="CommentSingle"/>
```
```
      </rule>
```

      <rule pattern="/(\\\n)?[*][\w\W]*?[*](\\\n)?/">

        <token type="CommentMultiline"/>

```
      </rule>
```

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        <token type="CommentMultiline"/>

```
      </rule>
```
```
    </state>
```
```
    <state name="string">
```
```
      <rule pattern="&#34;">
```
```
        <token type="LiteralString"/>
```
```
        <pop depth="1"/>
```
```
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```

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        <token type="LiteralStringEscape"/>

```
      </rule>
```
```
      <rule pattern="[^\\&#34;\n]+">
```
```
        <token type="LiteralString"/>
```
```
      </rule>
```
```
      <rule pattern="\\\n">
```
```
        <token type="LiteralString"/>
```
```
      </rule>
```
```
      <rule pattern="\\">
```
```
        <token type="LiteralString"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="macro">
```

      <rule pattern="(include)(\s*(?:/[*].*?[*]/\s*)?)([^\n]+)">

```
        <bygroups>
```

          <token type="CommentPreproc"/>

```
          <token type="Text"/>
```

          <token type="CommentPreprocFile"/>

```
        </bygroups>
```
```
      </rule>
```
```
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```
```
        <token type="CommentPreproc"/>
```
```
      </rule>
```

      <rule pattern="/[*](.|\n)*?[*]/">

        <token type="CommentMultiline"/>

```
      </rule>
```
```
      <rule pattern="//.*?\n">
```
```
        <token type="CommentSingle"/>
```
```
        <pop depth="1"/>
```
```
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```
```
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```
```
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```
```
      </rule>
```
```
      <rule pattern="(?&lt;=\\)\n">
```
```
        <token type="CommentPreproc"/>
```
```
      </rule>
```
```
      <rule pattern="\n">
```
```
        <token type="CommentPreproc"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="statements">
```

      <rule pattern="(reinterpret_cast|static_assert|dynamic_cast|thread_local|static_cast|const_cast|protected|constexpr|namespace|restrict|noexcept|override|operator|typename|template|explicit|decltype|nullptr|private|alignof|virtual|mutable|alignas|typeid|friend|throws|export|public|delete|final|using|throw|catch|this|try|new)\b">

```
        <token type="Keyword"/>
```
```
      </rule>
```

      <rule pattern="char(16_t|32_t)\b">

```
        <token type="KeywordType"/>
```
```
      </rule>
```
```
      <rule pattern="(class)\b">
```
```
        <bygroups>
```
```
          <token type="Keyword"/>
```
```
          <token type="Text"/>
```
```
        </bygroups>
```
```
        <push state="classname"/>
```
```
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```

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```
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```

          <token type="LiteralStringAffix"/>

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          <token type="LiteralStringDelimiter"/>

          <token type="LiteralStringDelimiter"/>

          <token type="LiteralString"/>

          <token type="LiteralStringDelimiter"/>

          <token type="LiteralString"/>

```
        </bygroups>
```
```
      </rule>
```
```
      <rule pattern="(u8|u|U)(&#34;)">
```
```
        <bygroups>
```

          <token type="LiteralStringAffix"/>

          <token type="LiteralString"/>

```
        </bygroups>
```
```
        <push state="string"/>
```
```
      </rule>
```
```
      <rule pattern="(L?)(&#34;)">
```
```
        <bygroups>
```

          <token type="LiteralStringAffix"/>

          <token type="LiteralString"/>

```
        </bygroups>
```
```
        <push state="string"/>
```
```
      </rule>
```

      <rule pattern="(L?)(&#39;)(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\&#39;\n])(&#39;)">

```
        <bygroups>
```

          <token type="LiteralStringAffix"/>

          <token type="LiteralStringChar"/>

          <token type="LiteralStringChar"/>

          <token type="LiteralStringChar"/>

```
        </bygroups>
```
```
      </rule>
```

      <rule pattern="(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[LlUu]*">

        <token type="LiteralNumberFloat"/>

```
      </rule>
```

      <rule pattern="(\d+\.\d*|\.\d+|\d+[fF])[fF]?">

        <token type="LiteralNumberFloat"/>

```
      </rule>
```

      <rule pattern="0x[0-9a-fA-F]+[LlUu]*">

        <token type="LiteralNumberHex"/>

```
      </rule>
```
```
      <rule pattern="0[0-7]+[LlUu]*">
```

        <token type="LiteralNumberOct"/>

```
      </rule>
```
```
      <rule pattern="\d+[LlUu]*">
```

        <token type="LiteralNumberInteger"/>

```
      </rule>
```
```
      <rule pattern="\*/">
```
```
        <token type="Error"/>
```
```
      </rule>
```

      <rule pattern="[~!%^&amp;*+=|?:&lt;&gt;/-]">

```
        <token type="Operator"/>
```
```
      </rule>
```
```
      <rule pattern="[()\[\],.]">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```

      <rule pattern="(restricted|volatile|continue|register|default|typedef|struct|extern|switch|sizeof|static|return|union|while|const|break|goto|enum|else|case|auto|for|asm|if|do)\b">

```
        <token type="Keyword"/>
```
```
      </rule>
```

      <rule pattern="(_Bool|_Complex|_Imaginary|array|atomic_bool|atomic_char|atomic_int|atomic_llong|atomic_long|atomic_schar|atomic_short|atomic_uchar|atomic_uint|atomic_ullong|atomic_ulong|atomic_ushort|auto|bool|boolean|BooleanVariables|Byte|byte|Char|char|char16_t|char32_t|class|complex|Const|const|const_cast|delete|double|dynamic_cast|enum|explicit|extern|Float|float|friend|inline|Int|int|int16_t|int32_t|int64_t|int8_t|Long|long|new|NULL|null|operator|private|PROGMEM|protected|public|register|reinterpret_cast|short|signed|sizeof|Static|static|static_cast|String|struct|typedef|uint16_t|uint32_t|uint64_t|uint8_t|union|unsigned|virtual|Void|void|Volatile|volatile|word)\b">

```
        <token type="KeywordType"/>
```
```
      </rule>
```

      <rule pattern="(and|final|If|Loop|loop|not|or|override|setup|Setup|throw|try|xor)\b">

```
        <token type="Keyword"/>
```
```
      </rule>
```

      <rule pattern="(ANALOG_MESSAGE|BIN|CHANGE|DEC|DEFAULT|DIGITAL_MESSAGE|EXTERNAL|FALLING|FIRMATA_STRING|HALF_PI|HEX|HIGH|INPUT|INPUT_PULLUP|INTERNAL|INTERNAL1V1|INTERNAL1V1|INTERNAL2V56|INTERNAL2V56|LED_BUILTIN|LED_BUILTIN_RX|LED_BUILTIN_TX|LOW|LSBFIRST|MSBFIRST|OCT|OUTPUT|PI|REPORT_ANALOG|REPORT_DIGITAL|RISING|SET_PIN_MODE|SYSEX_START|SYSTEM_RESET|TWO_PI)\b">

        <token type="KeywordConstant"/>

```
      </rule>
```

      <rule pattern="(boolean|const|byte|word|string|String|array)\b">

```
        <token type="NameVariable"/>
```
```
      </rule>
```

      <rule pattern="(Keyboard|KeyboardController|MouseController|SoftwareSerial|EthernetServer|EthernetClient|LiquidCrystal|RobotControl|GSMVoiceCall|EthernetUDP|EsploraTFT|HttpClient|RobotMotor|WiFiClient|GSMScanner|FileSystem|Scheduler|GSMServer|YunClient|YunServer|IPAddress|GSMClient|GSMModem|Keyboard|Ethernet|Console|GSMBand|Esplora|Stepper|Process|WiFiUDP|GSM_SMS|Mailbox|USBHost|Firmata|PImage|Client|Server|GSMPIN|FileIO|Bridge|Serial|EEPROM|Stream|Mouse|Audio|Servo|File|Task|GPRS|WiFi|Wire|TFT|GSM|SPI|SD)\b">

```
        <token type="NameClass"/>
```
```
      </rule>
```

      <rule pattern="(abs|Abs|accept|ACos|acos|acosf|addParameter|analogRead|AnalogRead|analogReadResolution|AnalogReadResolution|analogReference|AnalogReference|analogWrite|AnalogWrite|analogWriteResolution|AnalogWriteResolution|answerCall|asin|ASin|asinf|atan|ATan|atan2|ATan2|atan2f|atanf|attach|attached|attachGPRS|attachInterrupt|AttachInterrupt|autoscroll|available|availableForWrite|background|beep|begin|beginPacket|beginSD|beginSMS|beginSpeaker|beginTFT|beginTransmission|beginWrite|bit|Bit|BitClear|bitClear|bitRead|BitRead|bitSet|BitSet|BitWrite|bitWrite|blink|blinkVersion|BSSID|buffer|byte|cbrt|cbrtf|Ceil|ceil|ceilf|changePIN|char|charAt|checkPIN|checkPUK|checkReg|circle|cityNameRead|cityNameWrite|clear|clearScreen|click|close|compareTo|compassRead|concat|config|connect|connected|constrain|Constrain|copysign|copysignf|cos|Cos|cosf|cosh|coshf|countryNameRead|countryNameWrite|createChar|cursor|debugPrint|degrees|Delay|delay|DelayMicroseconds|delayMicroseconds|detach|DetachInterrupt|detachInterrupt|DigitalPinToInterrupt|digitalPinToInterrupt|DigitalRead|digitalRead|DigitalWrite|digitalWrite|disconnect|display|displayLogos|drawBMP|drawCompass|encryptionType|end|endPacket|endSMS|endsWith|endTransmission|endWrite|equals|equalsIgnoreCase|exists|exitValue|Exp|exp|expf|fabs|fabsf|fdim|fdimf|fill|find|findUntil|float|floor|Floor|floorf|flush|fma|fmaf|fmax|fmaxf|fmin|fminf|fmod|fmodf|gatewayIP|get|getAsynchronously|getBand|getButton|getBytes|getCurrentCarrier|getIMEI|getKey|getModifiers|getOemKey|getPINUsed|getResult|getSignalStrength|getSocket|getVoiceCallStatus|getXChange|getYChange|hangCall|height|highByte|HighByte|home|hypot|hypotf|image|indexOf|int|interrupts|IPAddress|IRread|isActionDone|isAlpha|isAlphaNumeric|isAscii|isControl|isDigit|isDirectory|isfinite|isGraph|isHexadecimalDigit|isinf|isListening|isLowerCase|isnan|isPIN|isPressed|isPrintable|isPunct|isSpace|isUpperCase|isValid|isWhitespace|keyboardRead|keyPressed|keyReleased|knobRead|lastIndexOf|ldexp|ldexpf|leftToRight|length|line|lineFollowConfig|listen|listenOnLocalhost|loadImage|localIP|log|Log|log10|log10f|logf|long|lowByte|LowByte|lrint|lrintf|lround|lroundf|macAddress|maintain|map|Map|Max|max|messageAvailable|Micros|micros|millis|Millis|Min|min|mkdir|motorsStop|motorsWrite|mouseDragged|mouseMoved|mousePressed|mouseReleased|move|noAutoscroll|noBlink|noBuffer|noCursor|noDisplay|noFill|noInterrupts|NoInterrupts|noListenOnLocalhost|noStroke|noTone|NoTone|onReceive|onRequest|open|openNextFile|overflow|parseCommand|parseFloat|parseInt|parsePacket|pauseMode|peek|PinMode|pinMode|playFile|playMelody|point|pointTo|position|Pow|pow|powf|prepare|press|print|printFirmwareVersion|println|printVersion|process|processInput|PulseIn|pulseIn|pulseInLong|PulseInLong|put|radians|random|Random|randomSeed|RandomSeed|read|readAccelerometer|readBlue|readButton|readBytes|readBytesUntil|readGreen|readJoystickButton|readJoystickSwitch|readJoystickX|readJoystickY|readLightSensor|readMessage|readMicrophone|readNetworks|readRed|readSlider|readString|readStringUntil|readTemperature|ready|rect|release|releaseAll|remoteIP|remoteNumber|remotePort|remove|replace|requestFrom|retrieveCallingNumber|rewindDirectory|rightToLeft|rmdir|robotNameRead|robotNameWrite|round|roundf|RSSI|run|runAsynchronously|running|runShellCommand|runShellCommandAsynchronously|scanNetworks|scrollDisplayLeft|scrollDisplayRight|seek|sendAnalog|sendDigitalPortPair|sendDigitalPorts|sendString|sendSysex|Serial_Available|Serial_Begin|Serial_End|Serial_Flush|Serial_Peek|Serial_Print|Serial_Println|Serial_Read|serialEvent|setBand|setBitOrder|setCharAt|setClockDivider|setCursor|setDataMode|setDNS|setFirmwareVersion|setMode|setPINUsed|setSpeed|setTextSize|setTimeout|ShiftIn|shiftIn|ShiftOut|shiftOut|shutdown|signbit|sin|Sin|sinf|sinh|sinhf|size|sizeof|Sq|sq|Sqrt|sqrt|sqrtf|SSID|startLoop|startsWith|step|stop|stroke|subnetMask|substring|switchPIN|tan|Tan|tanf|tanh|tanhf|tempoWrite|text|toCharArray|toInt|toLowerCase|tone|Tone|toUpperCase|transfer|trim|trunc|truncf|tuneWrite|turn|updateIR|userNameRead|userNameWrite|voiceCall|waitContinue|width|WiFiServer|word|write|writeBlue|writeGreen|writeJSON|writeMessage|writeMicroseconds|writeRed|writeRGB|yield|Yield)\b">

```
        <token type="NameFunction"/>
```
```
      </rule>
```

      <rule pattern="(typename|__inline|restrict|_inline|thread|inline|naked)\b">

        <token type="KeywordReserved"/>

```
      </rule>
```

      <rule pattern="(__m(128i|128d|128|64))\b">

        <token type="KeywordReserved"/>

```
      </rule>
```

      <rule pattern="__(forceinline|identifier|unaligned|declspec|fastcall|finally|stdcall|wchar_t|assume|except|int32|cdecl|int16|leave|based|raise|int64|noop|int8|w64|try|asm)\b">

        <token type="KeywordReserved"/>

```
      </rule>
```

      <rule pattern="(true|false|NULL)\b">

```
        <token type="NameBuiltin"/>
```
```
      </rule>
```

      <rule pattern="([a-zA-Z_]\w*)(\s*)(:)(?!:)">

```
        <bygroups>
```
```
          <token type="NameLabel"/>
```
```
          <token type="Text"/>
```
```
          <token type="Punctuation"/>
```
```
        </bygroups>
```
```
      </rule>
```
```
      <rule pattern="[a-zA-Z_]\w*">
```
```
        <token type="Name"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="function">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="statements"/>
```
```
      </rule>
```
```
      <rule pattern=";">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="\{">
```
```
        <token type="Punctuation"/>
```
```
        <push/>
```
```
      </rule>
```
```
      <rule pattern="\}">
```
```
        <token type="Punctuation"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="if0">
```

      <rule pattern="^\s*#if.*?(?&lt;!\\)\n">

```
        <token type="CommentPreproc"/>
```
```
        <push/>
```
```
      </rule>
```

      <rule pattern="^\s*#el(?:se|if).*\n">

```
        <token type="CommentPreproc"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="^\s*#endif.*?(?&lt;!\\)\n">

```
        <token type="CommentPreproc"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule pattern=".*?\n">
```
```
        <token type="Comment"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="classname">
```
```
      <rule pattern="[a-zA-Z_]\w*">
```
```
        <token type="NameClass"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule pattern="\s*(?=&gt;)">
```
```
        <token type="Text"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="statement">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="statements"/>
```
```
      </rule>
```
```
      <rule pattern="[{}]">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern=";">
```
```
        <token type="Punctuation"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="root">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;{]*)(\{)">

```
        <bygroups>
```
```
          <usingself state="root"/>
```
```
          <token type="NameFunction"/>
```
```
          <usingself state="root"/>
```
```
          <usingself state="root"/>
```
```
          <token type="Punctuation"/>
```
```
        </bygroups>
```
```
        <push state="function"/>
```
```
      </rule>
```

      <rule pattern="((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;]*)(;)">

```
        <bygroups>
```
```
          <usingself state="root"/>
```
```
          <token type="NameFunction"/>
```
```
          <usingself state="root"/>
```
```
          <usingself state="root"/>
```
```
          <token type="Punctuation"/>
```
```
        </bygroups>
```
```
      </rule>
```
```
      <rule>
```
```
        <push state="statement"/>
```
```
      </rule>
```

      <rule pattern="__(multiple_inheritance|virtual_inheritance|single_inheritance|interface|uuidof|super|event)\b">

        <token type="KeywordReserved"/>

```
      </rule>
```

      <rule pattern="__(offload|blockingoffload|outer)\b">

```
        <token type="KeywordPseudo"/>
```
```
      </rule>
```
```
    </state>
```
```
  </rules>
```
```
</lexer>
```