1 files changed, 173 insertions, 0 deletions
diff --git a/static/modes/carbon-mode.ts b/static/modes/carbon-mode.ts
new file mode 100644
index 000000000..c05e1c4b1
--- /dev/null
+++ b/static/modes/carbon-mode.ts
@@ -0,0 +1,173 @@
+// Copyright (c) 2022, Compiler Explorer Authors
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//     * Redistributions of source code must retain the above copyright notice,
+//       this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above copyright
+//       notice, this list of conditions and the following disclaimer in the
+//       documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+'use strict';
+
+const monaco = require('monaco-editor');
+const cpp = require('monaco-editor/esm/vs/basic-languages/cpp/cpp');
+
+function definition() {
+    return {
+        defaultToken: 'invalid', // for debugging
+
+        keywords: [
+            'and',
+            'api',
+            'as',
+            'auto',
+            '__await',
+            'break',
+            'case',
+            'choice',
+            'class',
+            '__continuation',
+            'continue',
+            'default',
+            'else',
+            'external',
+            'false',
+            'fn',
+            'if',
+            'impl',
+            'import',
+            'interface',
+            'let',
+            'library',
+            'match',
+            'not',
+            'or',
+            'package',
+            'return',
+            '__run',
+            'String',
+            'then',
+            'true',
+            'var',
+            'while',
+        ],
+
+        typeKeywords: ['Bool', '__Continuation', '__Fn', 'String', 'Type'],
+
+        operators: [
+            '&',
+            '->',
+            ':',
+            ':!',
+            ',',
+            '=>',
+            '=',
+            '==',
+            '-',
+            '.',
+            '+',
+            ';',
+            '/',
+            '_', // not sure _ is an operator really
+        ],
+
+        // we include these common regular expressions
+        symbols: /[=><!~?:&|+\-*/^%]+/,
+
+        // C# style strings (TODO)
+        escapes: /\\(?:[abfnrtv\\"']|x[0-9A-Fa-f]{1,4}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})/,
+
+        // The main tokenizer for our languages
+        tokenizer: {
+            root: [
+                // identifiers and keywords
+                [
+                    /[a-z_$][\w$]*/,
+                    {
+                        cases: {
+                            '@typeKeywords': 'keyword',
+                            '@keywords': 'keyword',
+                            '@default': 'identifier',
+                        },
+                    },
+                ],
+                [/[A-Z][\w$]*/, 'type.identifier'], // to show class names nicely
+
+                // whitespace
+                {include: '@whitespace'},
+
+                // delimiters and operators
+                [/[{}()[\]]/, '@brackets'],
+                [/[<>](?!@symbols)/, '@brackets'],
+                [
+                    /@symbols/,
+                    {
+                        cases: {
+                            '@operators': 'operator',
+                            '@default': '',
+                        },
+                    },
+                ],
+
+                // numbers
+                [/\d*\.\d+([eE][-+]?\d+)?/, 'number.float'],
+                [/0[xX][0-9a-fA-F]+/, 'number.hex'],
+                [/\d+/, 'number'],
+
+                // delimiter: after number because of .\d floats
+                [/[;,.]/, 'delimiter'],
+
+                // strings
+                [/"([^"\\]|\\.)*$/, 'string.invalid'], // non-terminated string
+                [/"/, {token: 'string.quote', bracket: '@open', next: '@string'}],
+
+                // characters
+                [/'[^\\']'/, 'string'],
+                [/(')(@escapes)(')/, ['string', 'string.escape', 'string']],
+                [/'/, 'string.invalid'],
+            ],
+
+            comment: [
+                [/[^/*]+/, 'comment'],
+                [/\/\*/, 'comment', '@push'], // nested comment
+                ['\\*/', 'comment', '@pop'],
+                [/[/*]/, 'comment'],
+            ],
+
+            string: [
+                [/[^\\"]+/, 'string'],
+                [/@escapes/, 'string.escape'],
+                [/\\./, 'string.escape.invalid'],
+                [/"/, {token: 'string.quote', bracket: '@close', next: '@pop'}],
+            ],
+
+            whitespace: [
+                [/[ \t\r\n]+/, 'white'],
+                [/\/\*/, 'comment', '@comment'],
+                [/\/\/.*$/, 'comment'],
+            ],
+        },
+    };
+}
+
+const def = definition();
+monaco.languages.register({id: 'carbon'});
+monaco.languages.setMonarchTokensProvider('carbon', def);
+monaco.languages.setLanguageConfiguration('carbon', cpp.conf);
+
+export = def;