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book/node_modules/highlight.js/lib/languages/gcode.js

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+/*
+ Language: G-code (ISO 6983)
+ Contributors: Adam Joseph Cook <adam.joseph.cook@gmail.com>
+ Description: G-code syntax highlighter for Fanuc and other common CNC machine tool controls.
+ Website: https://www.sis.se/api/document/preview/911952/
+ Category: hardware
+ */
+
+function gcode(hljs) {
+  const regex = hljs.regex;
+  const GCODE_KEYWORDS = {
+    $pattern: /[A-Z]+|%/,
+    keyword: [
+      // conditions
+      'THEN',
+      'ELSE',
+      'ENDIF',
+      'IF',
+
+      // controls
+      'GOTO',
+      'DO',
+      'WHILE',
+      'WH',
+      'END',
+      'CALL',
+
+      // scoping
+      'SUB',
+      'ENDSUB',
+
+      // comparisons
+      'EQ',
+      'NE',
+      'LT',
+      'GT',
+      'LE',
+      'GE',
+      'AND',
+      'OR',
+      'XOR',
+
+      // start/end of program
+      '%'
+    ],
+    built_in: [
+      'ATAN',
+      'ABS',
+      'ACOS',
+      'ASIN',
+      'COS',
+      'EXP',
+      'FIX',
+      'FUP',
+      'ROUND',
+      'LN',
+      'SIN',
+      'SQRT',
+      'TAN',
+      'EXISTS'
+    ]
+  };
+
+
+  // TODO: post v12 lets use look-behind, until then \b and a callback filter will be used
+  // const LETTER_BOUNDARY_RE = /(?<![A-Z])/;
+  const LETTER_BOUNDARY_RE = /\b/;
+
+  function LETTER_BOUNDARY_CALLBACK(matchdata, response) {
+    if (matchdata.index === 0) {
+      return;
+    }
+
+    const charBeforeMatch = matchdata.input[matchdata.index - 1];
+    if (charBeforeMatch >= '0' && charBeforeMatch <= '9') {
+      return;
+    }
+
+    if (charBeforeMatch === '_') {
+      return;
+    }
+
+    response.ignoreMatch();
+  }
+
+  const NUMBER_RE = /[+-]?((\.\d+)|(\d+)(\.\d*)?)/;
+
+  const GENERAL_MISC_FUNCTION_RE = /[GM]\s*\d+(\.\d+)?/;
+  const TOOLS_RE = /T\s*\d+/;
+  const SUBROUTINE_RE = /O\s*\d+/;
+  const SUBROUTINE_NAMED_RE = /O<.+>/;
+  const AXES_RE = /[ABCUVWXYZ]\s*/;
+  const PARAMETERS_RE = /[FHIJKPQRS]\s*/;
+
+  const GCODE_CODE = [
+    // comments
+    hljs.COMMENT(/\(/, /\)/),
+    hljs.COMMENT(/;/, /$/),
+    hljs.APOS_STRING_MODE,
+    hljs.QUOTE_STRING_MODE,
+    hljs.C_NUMBER_MODE,
+
+    // gcodes
+    {
+      scope: 'title.function',
+      variants: [
+        // G General functions: G0, G5.1, G5.2, …
+        // M Misc functions: M0, M55.6, M199, …
+        { match: regex.concat(LETTER_BOUNDARY_RE, GENERAL_MISC_FUNCTION_RE) },
+        {
+          begin: GENERAL_MISC_FUNCTION_RE,
+          'on:begin': LETTER_BOUNDARY_CALLBACK
+        },
+        // T Tools
+        { match: regex.concat(LETTER_BOUNDARY_RE, TOOLS_RE), },
+        {
+          begin: TOOLS_RE,
+          'on:begin': LETTER_BOUNDARY_CALLBACK
+        }
+      ]
+    },
+
+    {
+      scope: 'symbol',
+      variants: [
+        // O Subroutine ID: O100, O110, …
+        { match: regex.concat(LETTER_BOUNDARY_RE, SUBROUTINE_RE) },
+        {
+          begin: SUBROUTINE_RE,
+          'on:begin': LETTER_BOUNDARY_CALLBACK
+        },
+        // O Subroutine name: O<some>, …
+        { match: regex.concat(LETTER_BOUNDARY_RE, SUBROUTINE_NAMED_RE) },
+        {
+          begin: SUBROUTINE_NAMED_RE,
+          'on:begin': LETTER_BOUNDARY_CALLBACK
+        },
+        // Checksum at end of line: *71, *199, …
+        { match: /\*\s*\d+\s*$/ }
+      ]
+    },
+
+    {
+      scope: 'operator', // N Line number: N1, N2, N1020, …
+      match: /^N\s*\d+/
+    },
+
+    {
+      scope: 'variable',
+      match: /-?#\s*\d+/
+    },
+
+    {
+      scope: 'property', // Physical axes,
+      variants: [
+        { match: regex.concat(LETTER_BOUNDARY_RE, AXES_RE, NUMBER_RE) },
+        {
+          begin: regex.concat(AXES_RE, NUMBER_RE),
+          'on:begin': LETTER_BOUNDARY_CALLBACK
+        },
+      ]
+    },
+
+    {
+      scope: 'params', // Different types of parameters
+      variants: [
+        { match: regex.concat(LETTER_BOUNDARY_RE, PARAMETERS_RE, NUMBER_RE) },
+        {
+          begin: regex.concat(PARAMETERS_RE, NUMBER_RE),
+          'on:begin': LETTER_BOUNDARY_CALLBACK
+        },
+      ]
+    },
+  ];
+
+  return {
+    name: 'G-code (ISO 6983)',
+    aliases: [ 'nc' ],
+    // Some implementations (CNC controls) of G-code are interoperable with uppercase and lowercase letters seamlessly.
+    // However, most prefer all uppercase and uppercase is customary.
+    case_insensitive: true,
+    // TODO: post v12 with the use of look-behind this can be enabled
+    disableAutodetect: true,
+    keywords: GCODE_KEYWORDS,
+    contains: GCODE_CODE
+  };
+}
+
+module.exports = gcode;