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// 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 * as fs from 'fs';
import path from 'path';
import {parse} from '../shared/stacktrace.js';
import {isString} from '../shared/common-utils.js';
const filePrefix = 'file://';
function removeFileProtocol(path: string) {
if (path.startsWith(filePrefix)) {
return path.slice(filePrefix.length);
} else {
return path;
}
}
function check_path(parent: URL, directory: string) {
// https://stackoverflow.com/a/45242825/15675011
const relative = path.relative(parent.pathname, directory);
if (relative && !relative.startsWith('..') && !path.isAbsolute(relative)) {
return relative;
} else {
return false;
}
}
function get_diagnostic() {
const e = new Error(); // eslint-disable-line unicorn/error-message
const trace = parse(e);
if (trace.length >= 4) {
const invoker_frame = trace[3];
if (invoker_frame.fileName && invoker_frame.lineNumber) {
// Just out of an abundance of caution...
const relative = check_path(global.ce_base_directory, removeFileProtocol(invoker_frame.fileName));
if (relative) {
try {
const file = fs.readFileSync(invoker_frame.fileName, 'utf8');
const lines = file.split('\n');
return {
file: relative,
line: invoker_frame.lineNumber,
src: lines[invoker_frame.lineNumber - 1].trim(),
};
} catch (e: any) {}
}
}
}
}
function fail(fail_message: string, user_message: string | undefined, args: any[]): never {
// Assertions will look like:
// Assertion failed
// Assertion failed: Foobar
// Assertion failed: Foobar, [{"foo": "bar"}]
// Assertion failed: Foobar, [{"foo": "bar"}], at `assert(x.foo.length < 2, "Foobar", x)`
let assert_line = fail_message;
if (user_message) {
assert_line += `: ${user_message}`;
}
if (args.length > 0) {
try {
assert_line += ', ' + JSON.stringify(args);
} catch (e) {}
}
const diagnostic = get_diagnostic();
if (diagnostic) {
throw new Error(assert_line + `, at ${diagnostic.file}:${diagnostic.line} \`${diagnostic.src}\``);
} else {
throw new Error(assert_line);
}
}
export function assert<C>(c: C, message?: string, ...extra_info: any[]): asserts c {
if (!c) {
fail('Assertion failed', message, extra_info);
}
}
export function unwrap<T>(x: T | undefined | null, message?: string, ...extra_info: any[]): T {
if (x === undefined || x === null) {
fail('Unwrap failed', message, extra_info);
}
return x;
}
// Take a type value that is maybe a string and ensure it is
// T is syntax sugar for unwrapping to a string union
export function unwrapString<T extends string>(x: any, message?: string, ...extra_info: any[]): T {
if (!isString(x)) {
fail('String unwrap failed', message, extra_info);
}
return x as T;
}
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