Structured text language support

components.json

@@ -389,6 +389,10 @@
 			"title": "Icon",
 			"owner": "Golmote"
 		},
+		"iecst": {
+			"title": "Structured Text (IEC 61131-3)",
+			"owner": "serhioromano"
+		},
 		"inform7": {
 			"title": "Inform 7",
 			"owner": "Golmote"

components/prism-iecst.js

@@ -0,0 +1,40 @@
+Prism.languages.iecst = {
+	'comment': [
+		{
+			pattern: /(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,
+			lookbehind: true
+		},
+		{
+			pattern: /(^|[^\\])\(\*[\s\S]*?(?:\*\)|$)/,
+			lookbehind: true
+		},
+		{
+			pattern: /(^|[^\\])\{[\s\S]*?(?:\}|$)/,
+			lookbehind: true
+		},
+		{
+			pattern: /(^|[^\\:])\/\/.*/,
+			lookbehind: true,
+			greedy: true
+		}
+    ],
+    'boolean': /\b(?:true|false|null)\b/,
+	'class-name': /\b(?:END_)?(PROGRAM|CONFIGURATION|INTERFACE|FUNCTION_BLOCK|FUNCTION|ACTION|TRANSITION|TYPE|STRUCT|(?:INITIAL_)?STEP|NAMESPACE|LIBRARY|CHANNEL|FOLDER|RESOURCE|VAR_(?:GLOBAL|INPUT|PUTPUT|IN_OUT|ACCESS|TEMP|EXTERNAL|CONFIG)|VAR|METHOD|PROPERTY)\b/i,
+	'keyword': /\b(?:(?:END_)?(?:IF|WHILE|REPEAT|CASE|FOR)|ELSE|FROM|THEN|ELSIF|DO|TO|BY|PRIVATE|PUBLIC|PROTECTED|CONSTANT|RETURN|EXIT|CONTINUE|GOTO|JMP|AT|RETAIN|NON_RETAIN|TASK|WITH|UNTIL|USING|EXTENDS|IMPLEMENTS|GET|SET|__TRY|__CATCH|__FINALLY|__ENDTRY)\b/,
+
+    'string': {
+		pattern: /(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
+		greedy: true
+    },
+    'variable': /\b(?:AT|BOOL|BYTE|(?:D|L)?WORD|U?(?:S|D|L)?INT|L?REAL|TIME(?:_OF_DAY)?|TOD|DT|DATE(?:_AND_TIME)?|STRING|ARRAY|ANY|POINTER)\b/,
+    'symbol': /%(?:I|Q|M)(?:X|B|W|D|L)[0-9\.]*|%(?:I|Q)[0-9\.]*/,
+    'number': /\b(?:16#[0-9ABCDEF]*)|\b(?:2#[01_]*)|\b(?:(?:T|D|DT|TOD)#[0-9_mshmd:]*)|\b(?:[A-Z]*\#[0-9.,_]*)|\b0x[\da-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:e[+-]?\d+)?/i,
+    'function': /\b\w+(?=\()/,
+    'operator': /\b(:?S?R?=>?|\+|\^|\-|&&?|\*\*?|\/|<=?|>=?|OR|AND|MOD|NOT|XOR|LE|GE|EQ|NE|GE|LT)\b/,
+    'punctuation': /[\(\);]/,
+    'type': {
+		pattern: /#/i,
+		lookbehind: true,
+		alias: 'selector'
+	},
+};

examples/prism-iecst.html

@@ -0,0 +1,40 @@
+<h2>Code</h2>
+<pre><code>
+CONFIGURATION DefaultCfg
+    VAR_GLOBAL
+      Start_Stop AT %IX0.0: BOOL; (* This is a comment *)
+    END_VAR
+    TASK NewTask  (INTERVAL := T#20ms);
+    PROGRAM Main WITH NewTask : PLC_PRG;
+END_CONFIGURATION
+
+PROGRAM demo
+    VAR_EXTERNAL
+      Start_Stop: BOOL;
+      StringVar: STRING[250] := "Test String"
+    END_VAR
+    VAR
+      a : REAL; // Another comment
+      todTest: TIME_OF_DAY := TOD#12:55;
+    END_VAR
+    a := csq(12.5);
+    IF a > REAL#100 - 16#FAC0 + 2#1001_0110 THEN
+      Start_Stop := TRUE;
+    END_IF
+END_PROGRAM;
+
+FUNCTION_BLOCK PRIVATE MyName EXTENDS AnotherName
+
+END_FUNCTION_BLOCK
+
+/* Get a square of the circle */
+FUNCTION csq : REAL 
+    VAR_INPUT
+      r: REAL;
+    END_VAR
+    VAR CONSTANT
+      c_pi: REAL := 3.14;
+    END_VAR
+    csq := ABS(c_pi * (r * 2));
+END_FUNCTION
+</code></pre>

plugins/show-language/prism-show-language.js

@@ -11,7 +11,7 @@ if (!Prism.plugins.toolbar) {
 }
 
 // The languages map is built automatically with gulp
-var Languages = /*languages_placeholder[*/{"html":"HTML","xml":"XML","svg":"SVG","mathml":"MathML","css":"CSS","clike":"C-like","js":"JavaScript","abap":"ABAP","abnf":"Augmented Backus–Naur form","apacheconf":"Apache Configuration","apl":"APL","arff":"ARFF","asciidoc":"AsciiDoc","adoc":"AsciiDoc","asm6502":"6502 Assembly","aspnet":"ASP.NET (C#)","autohotkey":"AutoHotkey","autoit":"AutoIt","shell":"Bash","basic":"BASIC","bnf":"Backus–Naur form","rbnf":"Routing Backus–Naur form","csharp":"C#","dotnet":"C#","cpp":"C++","cil":"CIL","coffee":"CoffeeScript","cmake":"CMake","csp":"Content-Security-Policy","css-extras":"CSS Extras","django":"Django/Jinja2","jinja2":"Django/Jinja2","dockerfile":"Docker","ebnf":"Extended Backus–Naur form","ejs":"EJS","erb":"ERB","fsharp":"F#","gcode":"G-code","gedcom":"GEDCOM","glsl":"GLSL","gml":"GameMaker Language","gamemakerlanguage":"GameMaker Language","graphql":"GraphQL","hs":"Haskell","hcl":"HCL","http":"HTTP","hpkp":"HTTP Public-Key-Pins","hsts":"HTTP Strict-Transport-Security","ichigojam":"IchigoJam","inform7":"Inform 7","javadoc":"JavaDoc","javadoclike":"JavaDoc-like","javastacktrace":"Java stack trace","jsdoc":"JSDoc","js-extras":"JS Extras","json":"JSON","jsonp":"JSONP","json5":"JSON5","latex":"LaTeX","tex":"TeX","context":"ConTeXt","emacs":"Lisp","elisp":"Lisp","emacs-lisp":"Lisp","lolcode":"LOLCODE","md":"Markdown","markup-templating":"Markup templating","matlab":"MATLAB","mel":"MEL","n1ql":"N1QL","n4js":"N4JS","n4jsd":"N4JS","nand2tetris-hdl":"Nand To Tetris HDL","nasm":"NASM","nginx":"nginx","nsis":"NSIS","objectivec":"Objective-C","ocaml":"OCaml","opencl":"OpenCL","parigp":"PARI/GP","objectpascal":"Object Pascal","php":"PHP","phpdoc":"PHPDoc","php-extras":"PHP Extras","plsql":"PL/SQL","powershell":"PowerShell","properties":".properties","protobuf":"Protocol Buffers","py":"Python","q":"Q (kdb+ database)","jsx":"React JSX","tsx":"React TSX","renpy":"Ren'py","rest":"reST (reStructuredText)","rb":"Ruby","sas":"SAS","sass":"Sass (Sass)","scss":"Sass (Scss)","sql":"SQL","soy":"Soy (Closure Template)","tap":"TAP","toml":"TOML","tt2":"Template Toolkit 2","ts":"TypeScript","t4-cs":"T4 Text Templates (C#)","t4":"T4 Text Templates (C#)","t4-vb":"T4 Text Templates (VB)","t4-templating":"T4 templating","vbnet":"VB.Net","vhdl":"VHDL","vim":"vim","visual-basic":"Visual Basic","vb":"Visual Basic","wasm":"WebAssembly","wiki":"Wiki markup","xeoracube":"XeoraCube","xojo":"Xojo (REALbasic)","xquery":"XQuery","yaml":"YAML","yml":"YAML"}/*]*/;
+var Languages = /*languages_placeholder[*/{"html":"HTML","xml":"XML","svg":"SVG","mathml":"MathML","css":"CSS","clike":"C-like","js":"JavaScript","abap":"ABAP","abnf":"Augmented Backus–Naur form","apacheconf":"Apache Configuration","apl":"APL","arff":"ARFF","asciidoc":"AsciiDoc","adoc":"AsciiDoc","asm6502":"6502 Assembly","aspnet":"ASP.NET (C#)","autohotkey":"AutoHotkey","autoit":"AutoIt","shell":"Bash","basic":"BASIC","bnf":"Backus–Naur form","rbnf":"Routing Backus–Naur form","csharp":"C#","dotnet":"C#","cpp":"C++","cil":"CIL","coffee":"CoffeeScript","cmake":"CMake","csp":"Content-Security-Policy","css-extras":"CSS Extras","django":"Django/Jinja2","jinja2":"Django/Jinja2","dockerfile":"Docker","ebnf":"Extended Backus–Naur form","ejs":"EJS","erb":"ERB","fsharp":"F#","gcode":"G-code","gedcom":"GEDCOM","glsl":"GLSL","gml":"GameMaker Language","gamemakerlanguage":"GameMaker Language","graphql":"GraphQL","hs":"Haskell","hcl":"HCL","http":"HTTP","hpkp":"HTTP Public-Key-Pins","hsts":"HTTP Strict-Transport-Security","ichigojam":"IchigoJam","iecst":"Structured Text (IEC 61131-3)","inform7":"Inform 7","javadoc":"JavaDoc","javadoclike":"JavaDoc-like","javastacktrace":"Java stack trace","jsdoc":"JSDoc","js-extras":"JS Extras","json":"JSON","jsonp":"JSONP","json5":"JSON5","latex":"LaTeX","tex":"TeX","context":"ConTeXt","emacs":"Lisp","elisp":"Lisp","emacs-lisp":"Lisp","lolcode":"LOLCODE","md":"Markdown","markup-templating":"Markup templating","matlab":"MATLAB","mel":"MEL","n1ql":"N1QL","n4js":"N4JS","n4jsd":"N4JS","nand2tetris-hdl":"Nand To Tetris HDL","nasm":"NASM","nginx":"nginx","nsis":"NSIS","objectivec":"Objective-C","ocaml":"OCaml","opencl":"OpenCL","parigp":"PARI/GP","objectpascal":"Object Pascal","php":"PHP","phpdoc":"PHPDoc","php-extras":"PHP Extras","plsql":"PL/SQL","powershell":"PowerShell","properties":".properties","protobuf":"Protocol Buffers","py":"Python","q":"Q (kdb+ database)","jsx":"React JSX","tsx":"React TSX","renpy":"Ren'py","rest":"reST (reStructuredText)","rb":"Ruby","sas":"SAS","sass":"Sass (Sass)","scss":"Sass (Scss)","sql":"SQL","soy":"Soy (Closure Template)","tap":"TAP","toml":"TOML","tt2":"Template Toolkit 2","ts":"TypeScript","t4-cs":"T4 Text Templates (C#)","t4":"T4 Text Templates (C#)","t4-vb":"T4 Text Templates (VB)","t4-templating":"T4 templating","vbnet":"VB.Net","vhdl":"VHDL","vim":"vim","visual-basic":"Visual Basic","vb":"Visual Basic","wasm":"WebAssembly","wiki":"Wiki markup","xeoracube":"XeoraCube","xojo":"Xojo (REALbasic)","xquery":"XQuery","yaml":"YAML","yml":"YAML"}/*]*/;
 
 Prism.plugins.toolbar.registerButton('show-language', function(env) {
 	var pre = env.element.parentNode;

tests/languages/iecst/block.test

@@ -0,0 +1,23 @@
+csq := ABS(c_pi * (r * 2));
+
+----------------------------------------------------
+
+[
+	"csq ",
+	["operator", ":="],
+	["function", "ABS"],
+	["punctuation", "("],
+    "c_pi ",
+	["operator", "*"],
+	["punctuation", "("],
+    "r ",
+	["operator", "*"],
+	["number", "2"],
+	["punctuation", ")"],
+	["punctuation", ")"],
+	["punctuation", ";"]
+]
+
+----------------------------------------------------
+
+Checks expression.

tests/languages/iecst/number.test

@@ -0,0 +1,13 @@
+a := 100
+
+----------------------------------------------------
+
+[
+	"a ",
+	["operator", ":="],
+	["number", "100"]
+]
+
+----------------------------------------------------
+
+Checks number.