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// Copyright (c) 2016, Matt Godbolt
// 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.
const BaseCompiler = require('../base-compiler'),
argumentParsers = require('./argument-parsers'),
fs = require('fs-extra'),
logger = require('./../logger').logger,
path = require('path'),
semverParser = require('semver');
class LDCCompiler extends BaseCompiler {
constructor(info, env) {
super(info, env);
this.compiler.supportsIntel = true;
this.compiler.supportsIrView = true;
this.compiler.irArg = ['-output-ll'];
}
getSharedLibraryPathsAsArguments() {
return [];
}
optionsForFilter(filters, outputFilename) {
let options = ['-g', '-of', this.filename(outputFilename)];
if (filters.intel && !filters.binary) options = options.concat('-x86-asm-syntax=intel');
if (!filters.binary) options = options.concat('-output-s');
return options;
}
getArgumentParser() {
return argumentParsers.Clang;
}
filterUserOptions(userOptions) {
return userOptions.filter(option => option !== '-run');
}
isCfgCompiler() {
return true;
}
couldSupportASTDump(version) {
const versionRegex = /\((\d\.\d+)\.\d+/;
const versionMatch = versionRegex.exec(version);
return versionMatch ? semverParser.compare(versionMatch[1] + '.0', '1.4.0') >= 0 : false;
}
async generateAST(inputFilename, options) {
// These options make LDC produce an AST dump in a separate file `<inputFilename>.cg`.
const newOptions = options.concat('-vcg-ast');
const execOptions = this.getDefaultExecOptions();
return this.loadASTOutput(
await this.runCompiler(this.compiler.exe, newOptions, this.filename(inputFilename), execOptions));
}
async loadASTOutput(output) {
if (output.code !== 0) {
return `Error generating AST: ${output.code}`;
}
// Load the AST output from the `.cg` file.
// Demangling is not needed.
const astFilename = output.inputFilename.concat('.cg');
try {
return await fs.readFile(astFilename, 'utf-8');
} catch (e) {
if (e instanceof Error && e.code === 'ENOENT') {
logger.warn(`LDC AST file ${astFilename} requested but it does not exist`);
return '';
}
throw e;
}
}
// Override the IR file name method for LDC because the output file is different from clang.
getIrOutputFilename(inputFilename) {
return this.getOutputFilename(path.dirname(inputFilename), this.outputFilebase)
.replace('.s', '.ll');
}
}
module.exports = LDCCompiler;
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