Add Crystal support (#2732)

* Add Crystal support

* Fix copyright

* Add ASM parser for Crystal

* Add supportsLibraryCodeFilter

* Update crystal-mode.js

* use baseName

* Force `square` call

* Update default snippet

Co-authored-by: Patrick Quist <partouf@gmail.com>

3 files changed, 85 insertions, 0 deletions

diff --git a/lib/compilers/_all.js b/lib/compilers/_all.js
index c72b1a417..8a69fe33e 100644
--- a/lib/compilers/_all.js
+++ b/lib/compilers/_all.js
@@ -30,6 +30,7 @@ export { Cc65Compiler } from './cc65';
 export { ClangCompiler } from './clang';
 export { ClangCudaCompiler } from './clang';
 export { CleanCompiler } from './clean';
+export { CrystalCompiler } from './crystal';
 export { DefaultCompiler } from './default';
 export { DMDCompiler } from './dmd';
 export { EllccCompiler } from './ellcc';
diff --git a/lib/compilers/argument-parsers.js b/lib/compilers/argument-parsers.js
index f1be78e9d..a7fd8d822 100644
--- a/lib/compilers/argument-parsers.js
+++ b/lib/compilers/argument-parsers.js
@@ -310,3 +310,10 @@ export class NimParser extends BaseParser {
         return compiler;
     }
 }
+
+export class CrystalParser extends BaseParser {
+    static async parse(compiler) {
+        await CrystalParser.getOptions(compiler, 'build');
+        return compiler;
+    }
+}
diff --git a/lib/compilers/crystal.js b/lib/compilers/crystal.js
new file mode 100644
index 000000000..d03924eb6
--- /dev/null
+++ b/lib/compilers/crystal.js
@@ -0,0 +1,77 @@
+// Copyright (c) 2021, 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 path from 'path';
+
+import _ from 'underscore';
+
+import { BaseCompiler } from '../base-compiler';
+
+import { CrystalAsmParser } from '../asm-parser-crystal';
+import { CrystalParser } from './argument-parsers';
+
+export class CrystalCompiler extends BaseCompiler {
+    static get key() { return 'crystal'; }
+
+    constructor(compiler, env) {
+        super(compiler, env);
+        this.asm = new CrystalAsmParser();
+        this.compiler.supportsIrView = true;
+        this.compiler.irArg = ['--emit', 'llvm-ir'];
+    }
+
+    getSharedLibraryPathsAsArguments() {
+        return [];
+    }
+
+    optionsForFilter(filters, outputFilename, userOptions) {
+        const output = this.filename(this.getExecutableFilename(path.dirname(outputFilename), this.outputFilebase));
+        let options = ['build', '-o', output];
+
+        const userRequestedEmit = _.any(userOptions, opt => opt.includes('--emit'));
+        if (!filters.binary) {
+            if (!userRequestedEmit) {
+                options = options.concat('--emit', 'asm');
+            }
+        }
+
+        return options;
+    }
+
+    getOutputFilename(dirPath) {
+        return path.join(dirPath, `${path.basename(this.compileFilename, this.lang.extensions[0])}.s`);
+    }
+
+    getExecutableFilename(dirPath, outputFilebase) {
+        return path.join(dirPath, outputFilebase);
+    }
+
+    getObjdumpOutputFilename(defaultOutputFilename) {
+        return this.getExecutableFilename(path.dirname(defaultOutputFilename), this.outputFilebase);
+    }
+
+    getArgumentParser() {
+        return CrystalParser;
+    }
+}