Fixes for cppfront (#4076)

* Rename cppx_cppfront to cpp2_cppfront * Add some blurb about the compiler * Some syntax highlighting * Better output highlighting * Some form of line tracking and filtering
2025-12-27 10:33:59 -05:00 · 2022-09-20 07:42:41 -05:00
parent 377c907af4
commit a8a666aeac
12 changed files with 199 additions and 46 deletions
--- a/etc/config/cpp2_cppfront.amazon.properties
+++ b/etc/config/cpp2_cppfront.amazon.properties
@@ -2,6 +2,7 @@
 compilers=&cppfront

 group.cppfront.compilers=cppfront_trunk
+group.cppfront.notification=<a href="https://github.com/hsutter/cppfront" target="_blank">Cppfront</a> is an experimental compiler from a potential C++ 'syntax 2' (Cpp2) to today's 'syntax 1' (Cpp1), to learn some things, prove out some concepts, and share some ideas.
 compiler.cppfront_trunk.exe=/opt/compiler-explorer/cppfront-trunk/cppfront
 compiler.cppfront_trunk.name=cppfront trunk
 defaultCompiler=cppfront_trunk
--- a/etc/config/cpp2_cppfront.defaults.properties
+++ b/etc/config/cpp2_cppfront.defaults.properties
@@ -2,6 +2,7 @@
 compilers=&cppfront

 group.cppfront.compilers=cppfront_trunk
+group.cppfront.notification=<a href="https://github.com/hsutter/cppfront" target="_blank">Cppfront</a> is an experimental compiler from a potential C++ 'syntax 2' (Cpp2) to today's 'syntax 1' (Cpp1), to learn some things, prove out some concepts, and share some ideas.
 compiler.cppfront_trunk.exe=cppfront
 compiler.cppfront_trunk.name=cppfront trunk
 defaultCompiler=cppfront_trunk
--- a/examples/cpp2_cppfront/default.cpp2
+++ b/examples/cpp2_cppfront/default.cpp2
--- a/lib/compilers/cppfront.ts
+++ b/lib/compilers/cppfront.ts
@@ -24,10 +24,9 @@

 import path from 'path';

-import {ExecutionOptions} from '../../types/compilation/compilation.interfaces';
 import {ParseFilters} from '../../types/features/filters.interfaces';
 import {BaseCompiler} from '../base-compiler';
-import * as exec from '../exec';
+import {AsmParserCpp} from '../parsers/asm-parser-cpp';

 export class CppFrontCompiler extends BaseCompiler {
    static get key() {
@@ -37,29 +36,10 @@ export class CppFrontCompiler extends BaseCompiler {
    constructor(info, env) {
        super(info, env);

+        this.asm = new AsmParserCpp();
        this.outputFilebase = 'example';
    }

-    override orderArguments(
-        options: string[],
-        inputFilename: string,
-        libIncludes: string[],
-        libOptions: string[],
-        libPaths: string[],
-        libLinks: string[],
-        userOptions: string[],
-        staticLibLinks: string[],
-    ) {
-        return options.concat(
-            userOptions,
-            ['example.cpp2'], // Grotesque hack to handle the fact we can't use abs filenames with current
-            libIncludes,
-            libOptions,
-            libPaths,
-            libLinks,
-            staticLibLinks,
-        );
-    }
    override optionsForFilter(filters: ParseFilters, outputFilename: any) {
        return [];
    }
--- a/lib/languages.ts
+++ b/lib/languages.ts
@@ -29,7 +29,16 @@ import _ from 'underscore';

 import {Language, LanguageKey} from '../types/languages.interfaces';

-type DefKeys = 'name' | 'monaco' | 'extensions' | 'alias' | 'previewFilter' | 'formatter' | 'logoUrl' | 'logoUrlDark';
+type DefKeys =
+    | 'name'
+    | 'monaco'
+    | 'extensions'
+    | 'alias'
+    | 'previewFilter'
+    | 'formatter'
+    | 'logoUrl'
+    | 'logoUrlDark'
+    | 'monacoDisassembly';
 type LanguageDefinition = Pick<Language, DefKeys>;

 const definitions: Record<LanguageKey, LanguageDefinition> = {
@@ -42,6 +51,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: 'cppp',
    },
    'c++': {
        name: 'C++',
@@ -52,6 +62,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: 'clangformat',
        previewFilter: /^\s*#include/,
+        monacoDisassembly: null,
    },
    ada: {
        name: 'Ada',
@@ -62,6 +73,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: 'ada-dark.svg',
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    analysis: {
        name: 'Analysis',
@@ -72,6 +84,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    assembly: {
        name: 'Assembly',
@@ -82,6 +95,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    c: {
        name: 'C',
@@ -92,6 +106,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: 'clangformat',
        previewFilter: /^\s*#include/,
+        monacoDisassembly: null,
    },
    carbon: {
        name: 'Carbon',
@@ -102,6 +117,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    circle: {
        name: 'C++ (Circle)',
@@ -112,6 +128,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrl: 'c++.svg', // TODO: Find a better alternative
        logoUrlDark: null,
        formatter: null,
+        monacoDisassembly: null,
    },
    circt: {
        name: 'CIRCT',
@@ -122,6 +139,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        formatter: null,
        logoUrlDark: null,
        previewFilter: null,
+        monacoDisassembly: 'mlir',
    },
    clean: {
        name: 'Clean',
@@ -132,6 +150,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    cmake: {
        name: 'CMake',
@@ -142,6 +161,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    cpp_for_opencl: {
        name: 'C++ for OpenCL',
@@ -152,6 +172,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: 'opencl-dark.svg',
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    mlir: {
        name: 'MLIR',
@@ -162,6 +183,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        formatter: null,
        logoUrlDark: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    cppx: {
        name: 'Cppx',
@@ -172,6 +194,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: /^\s*#include/,
+        monacoDisassembly: null,
    },
    cppx_blue: {
        name: 'Cppx-Blue',
@@ -182,6 +205,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    cppx_gold: {
        name: 'Cppx-Gold',
@@ -192,16 +216,18 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
-    cppx_cppfront: {
-        name: 'Cppx-cppfront',
-        monaco: 'cppx-cppfront',
+    cpp2_cppfront: {
+        name: 'Cpp2-cppfront',
+        monaco: 'cpp2-cppfront',
        extensions: ['.cpp2'],
        alias: [],
        logoUrl: 'c++.svg', // TODO: Find a better alternative
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: 'cppp',
    },
    crystal: {
        name: 'Crystal',
@@ -212,6 +238,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: 'crystal-dark.svg',
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    csharp: {
        name: 'C#',
@@ -222,6 +249,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    cuda: {
        name: 'CUDA C++',
@@ -232,6 +260,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: 'cuda-dark.svg',
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: 'ptx',
    },
    d: {
        name: 'D',
@@ -242,6 +271,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    dart: {
        name: 'Dart',
@@ -252,6 +282,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: 'dartformat',
        previewFilter: null,
+        monacoDisassembly: null,
    },
    erlang: {
        name: 'Erlang',
@@ -262,6 +293,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    fortran: {
        name: 'Fortran',
@@ -272,6 +304,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    fsharp: {
        name: 'F#',
@@ -282,6 +315,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    go: {
        name: 'Go',
@@ -292,6 +326,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    haskell: {
        name: 'Haskell',
@@ -302,6 +337,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    hlsl: {
        name: 'HLSL',
@@ -312,6 +348,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    ispc: {
        name: 'ispc',
@@ -322,6 +359,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    java: {
        name: 'Java',
@@ -332,6 +370,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    kotlin: {
        name: 'Kotlin',
@@ -342,6 +381,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    llvm: {
        name: 'LLVM IR',
@@ -352,6 +392,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    nim: {
        name: 'Nim',
@@ -362,6 +403,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    ocaml: {
        name: 'OCaml',
@@ -372,6 +414,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    openclc: {
        name: 'OpenCL C',
@@ -382,6 +425,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: 'opencl-dark.svg',
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    pascal: {
        name: 'Pascal',
@@ -392,6 +436,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: 'pascal-dark.svg',
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    pony: {
        name: 'Pony',
@@ -402,6 +447,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    python: {
        name: 'Python',
@@ -412,6 +458,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    ruby: {
        name: 'Ruby',
@@ -422,6 +469,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: 'asmruby',
    },
    rust: {
        name: 'Rust',
@@ -432,6 +480,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: 'rust-dark.svg',
        formatter: 'rustfmt',
        previewFilter: null,
+        monacoDisassembly: null,
    },
    scala: {
        name: 'Scala',
@@ -442,6 +491,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    solidity: {
        name: 'Solidity',
@@ -452,6 +502,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    swift: {
        name: 'Swift',
@@ -462,6 +513,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    toit: {
        name: 'Toit',
@@ -472,6 +524,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    typescript: {
        name: 'TypeScript Native',
@@ -482,6 +535,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    vb: {
        name: 'Visual Basic',
@@ -492,6 +546,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
    zig: {
        name: 'Zig',
@@ -502,6 +557,7 @@ const definitions: Record<LanguageKey, LanguageDefinition> = {
        logoUrlDark: null,
        formatter: null,
        previewFilter: null,
+        monacoDisassembly: null,
    },
 };

--- a/lib/parsers/asm-parser-cpp.ts
+++ b/lib/parsers/asm-parser-cpp.ts
@@ -0,0 +1,77 @@
+// 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.
+
+import {ParseFilters} from '../../types/features/filters.interfaces';
+import * as utils from '../utils';
+
+import {IAsmParser} from './asm-parser.interfaces';
+
+type InlineLabel = {name: string; range: {startCol: number; endCol: number}};
+type Source = {file: string | null; line: number};
+
+const lineRe = /^\s*#line\s+(?<line>\d+)\s+"(?<file>[^"]+)"/;
+
+export class AsmParserCpp implements IAsmParser {
+    process(asmResult: string, filters: ParseFilters) {
+        const startTime = process.hrtime.bigint();
+
+        const asm: {
+            text: string;
+            source: Source | null;
+            labels: InlineLabel[];
+        }[] = [];
+
+        let source: Source | null = null;
+        for (const line of utils.splitLines(asmResult)) {
+            let advance = true;
+            const match = line.match(lineRe);
+            if (match && match.groups) {
+                // TODO perhaps we'll need to check the file here at some point in the future.
+                // TODO I've temporarily disabled this as the result is visually too noisy
+                // was:  source = {file: null, line: parseInt(match.groups.line)};
+                source = {file: match.groups.file, line: parseInt(match.groups.line)};
+                if (filters.directives) {
+                    continue;
+                }
+                advance = false;
+            }
+            asm.push({
+                text: line,
+                source: source,
+                labels: [],
+            });
+            if (source && advance) {
+                source = {...source, line: source.line + 1};
+            }
+        }
+
+        const endTime = process.hrtime.bigint();
+        return {
+            asm: asm,
+            labelDefinitions: [],
+            parsingTime: ((endTime - startTime) / BigInt(1000000)).toString(),
+            filteredCount: 0,
+        };
+    }
+}
--- a/static/modes/_all.ts
+++ b/static/modes/_all.ts
@@ -31,6 +31,7 @@ import './clean-mode';
 import './cmake-mode';
 import './cppcircle-mode';
 import './cpp-for-opencl-mode';
+import './cppfront-mode';
 import './cppp-mode';
 import './cppx-blue-mode';
 import './cppx-gold-mode';
--- a/static/modes/cppfront-mode.ts
+++ b/static/modes/cppfront-mode.ts
@@ -0,0 +1,48 @@
+// 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.
+
+import $ from 'jquery';
+
+const monaco = require('monaco-editor');
+const cpp = require('monaco-editor/esm/vs/basic-languages/cpp/cpp');
+const cppp = require('./cppp-mode');
+
+function definition() {
+    const cppfront = $.extend(true, {}, cppp); // deep copy
+    cppfront.tokenPostfix = '.herb';
+
+    cppfront.keywords.push('type', 'next', 'inout');
+
+    // pick up 'identifier:' as a definition. This is a hack; ideally we'd have "optional whitespace after beginning of
+    // line" but here I just try to disambiguate `::` and don't worry about labels.
+    cppfront.tokenizer.root.unshift([/[a-zA-Z_]\w*\s*:(?!:)/, 'identifier.definition']);
+
+    return cppfront;
+}
+
+monaco.languages.register({id: 'cpp2-cppfront'});
+monaco.languages.setLanguageConfiguration('cpp2-cppfront', cpp.conf);
+monaco.languages.setMonarchTokensProvider('cpp2-cppfront', definition());
+
+export {};
--- a/static/modes/cppx-blue-mode.ts
+++ b/static/modes/cppx-blue-mode.ts
@@ -30,7 +30,7 @@ const cppp = require('./cppp-mode');

 function definition() {
    const cppx_blue = $.extend(true, {}, cppp); // deep copy
-    cppx_blue.tokenPostfix = '.cppx-blue';
+    cppx_blue.tokenPostfix = '.herb';

    // add the 'type' keyword
    cppx_blue.keywords.push('type');
--- a/static/panes/compiler.js
+++ b/static/panes/compiler.js
@@ -128,21 +128,8 @@ function Compiler(hub, container, state) {

    this.initButtons(state);

-    var monacoDisassembly = 'asm';
-    // Bandaid fix to not have to include monacoDisassembly everywhere in languages.js
-    if (languages[this.currentLangId]) {
-        switch (languages[this.currentLangId].id) {
-            case 'cuda':
-                monacoDisassembly = 'ptx';
-                break;
-            case 'ruby':
-                monacoDisassembly = 'asmruby';
-                break;
-            case 'mlir':
-                monacoDisassembly = 'mlir';
-                break;
-        }
-    }
+    var monacoDisassembly =
+        (languages[this.currentLangId] ? languages[this.currentLangId].monacoDisassembly : null) || 'asm';

    this.outputEditor = monaco.editor.create(
        this.monacoPlaceholder[0],
--- a/static/themes.ts
+++ b/static/themes.ts
@@ -65,7 +65,7 @@ editor.defineTheme('ce', {
    inherit: true,
    rules: [
        {
-            token: 'identifier.definition.cppx-blue',
+            token: 'identifier.definition.herb',
            foreground: '008a00',
            fontStyle: 'bold',
        },
@@ -78,7 +78,7 @@ editor.defineTheme('ce-dark', {
    inherit: true,
    rules: [
        {
-            token: 'identifier.definition.cppx-blue',
+            token: 'identifier.definition.herb',
            foreground: '7c9c7c',
            fontStyle: 'bold',
        },
@@ -91,7 +91,7 @@ editor.defineTheme('ce-dark-plus', {
    inherit: true,
    rules: [
        {
-            token: 'identifier.definition.cppx-blue',
+            token: 'identifier.definition.herb',
            foreground: '7c9c7c',
            fontStyle: 'bold',
        },
--- a/types/languages.interfaces.ts
+++ b/types/languages.interfaces.ts
@@ -37,7 +37,7 @@ export type LanguageKey =
    | 'cppx'
    | 'cppx_blue'
    | 'cppx_gold'
-    | 'cppx_cppfront'
+    | 'cpp2_cppfront'
    | 'crystal'
    | 'csharp'
    | 'cuda'
@@ -93,4 +93,6 @@ export interface Language {
    /** Example code to show in the language's editor */
    example: string;
    previewFilter: RegExp | null;
+    /** The override for the output (default is "asm") */
+    monacoDisassembly: string | null;
 }