// Copyright (c) 2018, 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.

const BaseCompiler = require('../base-compiler'),
    path = require('path'),
    argumentParsers = require("./argument-parsers");

class NvccCompiler extends BaseCompiler {
    constructor(info, env) {
        super(info, env);
        // These are for parsing the output of nvdisasm.
        this.asm.asmOpcodeRe = /^\s*\/\*([^*]+)\*\/()()\s*{?\s*([^};]+)(?:}|;\s*\/\* 0x([0-9a-f]+) \*\/)$/;
        this.asm.lineRe = /^\s*\/\/## File "([^"]+)", line (\d+)$/;
        this.asm.labelRe = /^(?!\.text\.)()(\S[^:]+):$/;
    }

    // TODO: (for all of CUDA)
    // * lots of whitespace from nvcc
    // * would be nice to teach demangler to support _MANGLED_param_0 e.g. _Z6squarePii_param_0
    // * select CPU code vs GPU code
    // * would be nice to try and filter unused `.func`s from e.g. clang output

    optionsForFilter(filters, outputFilename) {
        return ['-o', this.filename(outputFilename), '-lineinfo', filters.binary ? '-cubin' : '-ptx'];
    }

    getArgumentParser() {
        return argumentParsers.Clang;
    }

    objdump(outputFilename, result, maxSize) {
        // For nvdisasm.
        let args = [outputFilename, "-c", "-g", "-hex"];
        const execOptions = {maxOutput: maxSize, customCwd: path.dirname(outputFilename)};

        return this.exec(this.compiler.objdumper, args, execOptions)
            .then(objResult => {
                result.asm = objResult.stdout;
                if (objResult.code !== 0) {
                    result.asm = `<No output: nvdisasm returned ${objResult.code}>`;
                }
                return result;
            });
    }
}

module.exports = NvccCompiler;
