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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;