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Copy pathcore.ts
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808 lines (691 loc) · 28.2 KB
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/// <reference path="types.ts"/>
/* @internal */
namespace ts {
/**
* Ternary values are defined such that
* x & y is False if either x or y is False.
* x & y is Maybe if either x or y is Maybe, but neither x or y is False.
* x & y is True if both x and y are True.
* x | y is False if both x and y are False.
* x | y is Maybe if either x or y is Maybe, but neither x or y is True.
* x | y is True if either x or y is True.
*/
export const enum Ternary {
False = 0,
Maybe = 1,
True = -1
}
export function createFileMap<T>(getCanonicalFileName: (fileName: string) => string): FileMap<T> {
let files: Map<T> = {};
return {
get,
set,
contains,
remove,
forEachValue: forEachValueInMap
}
function set(fileName: string, value: T) {
files[normalizeKey(fileName)] = value;
}
function get(fileName: string) {
return files[normalizeKey(fileName)];
}
function contains(fileName: string) {
return hasProperty(files, normalizeKey(fileName));
}
function remove (fileName: string) {
let key = normalizeKey(fileName);
delete files[key];
}
function forEachValueInMap(f: (value: T) => void) {
forEachValue(files, f);
}
function normalizeKey(key: string) {
return getCanonicalFileName(normalizeSlashes(key));
}
}
export const enum Comparison {
LessThan = -1,
EqualTo = 0,
GreaterThan = 1
}
export interface StringSet extends Map<any> { }
/**
* Iterates through 'array' by index and performs the callback on each element of array until the callback
* returns a truthy value, then returns that value.
* If no such value is found, the callback is applied to each element of array and undefined is returned.
*/
export function forEach<T, U>(array: T[], callback: (element: T, index: number) => U): U {
if (array) {
for (let i = 0, len = array.length; i < len; i++) {
let result = callback(array[i], i);
if (result) {
return result;
}
}
}
return undefined;
}
export function contains<T>(array: T[], value: T): boolean {
if (array) {
for (let v of array) {
if (v === value) {
return true;
}
}
}
return false;
}
export function indexOf<T>(array: T[], value: T): number {
if (array) {
for (let i = 0, len = array.length; i < len; i++) {
if (array[i] === value) {
return i;
}
}
}
return -1;
}
export function countWhere<T>(array: T[], predicate: (x: T) => boolean): number {
let count = 0;
if (array) {
for (let v of array) {
if (predicate(v)) {
count++;
}
}
}
return count;
}
export function filter<T>(array: T[], f: (x: T) => boolean): T[]{
let result: T[];
if (array) {
result = [];
for (let item of array) {
if (f(item)) {
result.push(item);
}
}
}
return result;
}
export function map<T, U>(array: T[], f: (x: T) => U): U[]{
let result: U[];
if (array) {
result = [];
for (let v of array) {
result.push(f(v));
}
}
return result;
}
export function concatenate<T>(array1: T[], array2: T[]): T[] {
if (!array2 || !array2.length) return array1;
if (!array1 || !array1.length) return array2;
return array1.concat(array2);
}
export function deduplicate<T>(array: T[]): T[]{
let result: T[];
if (array) {
result = [];
for (let item of array) {
if (!contains(result, item)) {
result.push(item);
}
}
}
return result;
}
export function sum(array: any[], prop: string): number {
let result = 0;
for (let v of array) {
result += v[prop];
}
return result;
}
export function addRange<T>(to: T[], from: T[]): void {
if (to && from) {
for (let v of from) {
to.push(v);
}
}
}
export function rangeEquals<T>(array1: T[], array2: T[], pos: number, end: number) {
while (pos < end) {
if (array1[pos] !== array2[pos]) {
return false;
}
pos++;
}
return true;
}
/**
* Returns the last element of an array if non-empty, undefined otherwise.
*/
export function lastOrUndefined<T>(array: T[]): T {
if (array.length === 0) {
return undefined;
}
return array[array.length - 1];
}
export function binarySearch(array: number[], value: number): number {
let low = 0;
let high = array.length - 1;
while (low <= high) {
let middle = low + ((high - low) >> 1);
let midValue = array[middle];
if (midValue === value) {
return middle;
}
else if (midValue > value) {
high = middle - 1;
}
else {
low = middle + 1;
}
}
return ~low;
}
export function reduceLeft<T>(array: T[], f: (a: T, x: T) => T): T;
export function reduceLeft<T, U>(array: T[], f: (a: U, x: T) => U, initial: U): U;
export function reduceLeft<T, U>(array: T[], f: (a: U, x: T) => U, initial?: U): U {
if (array) {
var count = array.length;
if (count > 0) {
var pos = 0;
var result = arguments.length <= 2 ? array[pos++] : initial;
while (pos < count) {
result = f(<U>result, array[pos++]);
}
return <U>result;
}
}
return initial;
}
export function reduceRight<T>(array: T[], f: (a: T, x: T) => T): T;
export function reduceRight<T, U>(array: T[], f: (a: U, x: T) => U, initial: U): U;
export function reduceRight<T, U>(array: T[], f: (a: U, x: T) => U, initial?: U): U {
if (array) {
var pos = array.length - 1;
if (pos >= 0) {
var result = arguments.length <= 2 ? array[pos--] : initial;
while (pos >= 0) {
result = f(<U>result, array[pos--]);
}
return <U>result;
}
}
return initial;
}
let hasOwnProperty = Object.prototype.hasOwnProperty;
export function hasProperty<T>(map: Map<T>, key: string): boolean {
return hasOwnProperty.call(map, key);
}
export function getProperty<T>(map: Map<T>, key: string): T {
return hasOwnProperty.call(map, key) ? map[key] : undefined;
}
export function isEmpty<T>(map: Map<T>) {
for (let id in map) {
if (hasProperty(map, id)) {
return false;
}
}
return true;
}
export function clone<T>(object: T): T {
let result: any = {};
for (let id in object) {
result[id] = (<any>object)[id];
}
return <T>result;
}
export function extend<T>(first: Map<T>, second: Map<T>): Map<T> {
let result: Map<T> = {};
for (let id in first) {
result[id] = first[id];
}
for (let id in second) {
if (!hasProperty(result, id)) {
result[id] = second[id];
}
}
return result;
}
export function forEachValue<T, U>(map: Map<T>, callback: (value: T) => U): U {
let result: U;
for (let id in map) {
if (result = callback(map[id])) break;
}
return result;
}
export function forEachKey<T, U>(map: Map<T>, callback: (key: string) => U): U {
let result: U;
for (let id in map) {
if (result = callback(id)) break;
}
return result;
}
export function lookUp<T>(map: Map<T>, key: string): T {
return hasProperty(map, key) ? map[key] : undefined;
}
export function copyMap<T>(source: Map<T>, target: Map<T>): void {
for (let p in source) {
target[p] = source[p];
}
}
/**
* Creates a map from the elements of an array.
*
* @param array the array of input elements.
* @param makeKey a function that produces a key for a given element.
*
* This function makes no effort to avoid collisions; if any two elements produce
* the same key with the given 'makeKey' function, then the element with the higher
* index in the array will be the one associated with the produced key.
*/
export function arrayToMap<T>(array: T[], makeKey: (value: T) => string): Map<T> {
let result: Map<T> = {};
forEach(array, value => {
result[makeKey(value)] = value;
});
return result;
}
export function memoize<T>(callback: () => T): () => T {
let value: T;
return () => {
if (callback) {
value = callback();
callback = undefined;
}
return value;
};
}
function formatStringFromArgs(text: string, args: { [index: number]: any; }, baseIndex?: number): string {
baseIndex = baseIndex || 0;
return text.replace(/{(\d+)}/g, (match, index?) => args[+index + baseIndex]);
}
export let localizedDiagnosticMessages: Map<string> = undefined;
export function getLocaleSpecificMessage(message: string) {
return localizedDiagnosticMessages && localizedDiagnosticMessages[message]
? localizedDiagnosticMessages[message]
: message;
}
export function createFileDiagnostic(file: SourceFile, start: number, length: number, message: DiagnosticMessage, ...args: any[]): Diagnostic;
export function createFileDiagnostic(file: SourceFile, start: number, length: number, message: DiagnosticMessage): Diagnostic {
let end = start + length;
Debug.assert(start >= 0, "start must be non-negative, is " + start);
Debug.assert(length >= 0, "length must be non-negative, is " + length);
if (file) {
Debug.assert(start <= file.text.length, `start must be within the bounds of the file. ${ start } > ${ file.text.length }`);
Debug.assert(end <= file.text.length, `end must be the bounds of the file. ${ end } > ${ file.text.length }`);
}
let text = getLocaleSpecificMessage(message.key);
if (arguments.length > 4) {
text = formatStringFromArgs(text, arguments, 4);
}
return {
file,
start,
length,
messageText: text,
category: message.category,
code: message.code,
};
}
export function createCompilerDiagnostic(message: DiagnosticMessage, ...args: any[]): Diagnostic;
export function createCompilerDiagnostic(message: DiagnosticMessage): Diagnostic {
let text = getLocaleSpecificMessage(message.key);
if (arguments.length > 1) {
text = formatStringFromArgs(text, arguments, 1);
}
return {
file: undefined,
start: undefined,
length: undefined,
messageText: text,
category: message.category,
code: message.code
};
}
export function chainDiagnosticMessages(details: DiagnosticMessageChain, message: DiagnosticMessage, ...args: any[]): DiagnosticMessageChain;
export function chainDiagnosticMessages(details: DiagnosticMessageChain, message: DiagnosticMessage): DiagnosticMessageChain {
let text = getLocaleSpecificMessage(message.key);
if (arguments.length > 2) {
text = formatStringFromArgs(text, arguments, 2);
}
return {
messageText: text,
category: message.category,
code: message.code,
next: details
};
}
export function concatenateDiagnosticMessageChains(headChain: DiagnosticMessageChain, tailChain: DiagnosticMessageChain): DiagnosticMessageChain {
Debug.assert(!headChain.next);
headChain.next = tailChain;
return headChain;
}
export function compareValues<T>(a: T, b: T): Comparison {
if (a === b) return Comparison.EqualTo;
if (a === undefined) return Comparison.LessThan;
if (b === undefined) return Comparison.GreaterThan;
return a < b ? Comparison.LessThan : Comparison.GreaterThan;
}
function getDiagnosticFileName(diagnostic: Diagnostic): string {
return diagnostic.file ? diagnostic.file.fileName : undefined;
}
export function compareDiagnostics(d1: Diagnostic, d2: Diagnostic): Comparison {
return compareValues(getDiagnosticFileName(d1), getDiagnosticFileName(d2)) ||
compareValues(d1.start, d2.start) ||
compareValues(d1.length, d2.length) ||
compareValues(d1.code, d2.code) ||
compareMessageText(d1.messageText, d2.messageText) ||
Comparison.EqualTo;
}
function compareMessageText(text1: string | DiagnosticMessageChain, text2: string | DiagnosticMessageChain): Comparison {
while (text1 && text2) {
// We still have both chains.
let string1 = typeof text1 === "string" ? text1 : text1.messageText;
let string2 = typeof text2 === "string" ? text2 : text2.messageText;
let res = compareValues(string1, string2);
if (res) {
return res;
}
text1 = typeof text1 === "string" ? undefined : text1.next;
text2 = typeof text2 === "string" ? undefined : text2.next;
}
if (!text1 && !text2) {
// if the chains are done, then these messages are the same.
return Comparison.EqualTo;
}
// We still have one chain remaining. The shorter chain should come first.
return text1 ? Comparison.GreaterThan : Comparison.LessThan;
}
export function sortAndDeduplicateDiagnostics(diagnostics: Diagnostic[]): Diagnostic[]{
return deduplicateSortedDiagnostics(diagnostics.sort(compareDiagnostics));
}
export function deduplicateSortedDiagnostics(diagnostics: Diagnostic[]): Diagnostic[] {
if (diagnostics.length < 2) {
return diagnostics;
}
let newDiagnostics = [diagnostics[0]];
let previousDiagnostic = diagnostics[0];
for (let i = 1; i < diagnostics.length; i++) {
let currentDiagnostic = diagnostics[i];
let isDupe = compareDiagnostics(currentDiagnostic, previousDiagnostic) === Comparison.EqualTo;
if (!isDupe) {
newDiagnostics.push(currentDiagnostic);
previousDiagnostic = currentDiagnostic;
}
}
return newDiagnostics;
}
export function normalizeSlashes(path: string): string {
return path.replace(/\\/g, "/");
}
// Returns length of path root (i.e. length of "/", "x:/", "//server/share/, file:///user/files")
export function getRootLength(path: string): number {
if (path.charCodeAt(0) === CharacterCodes.slash) {
if (path.charCodeAt(1) !== CharacterCodes.slash) return 1;
let p1 = path.indexOf("/", 2);
if (p1 < 0) return 2;
let p2 = path.indexOf("/", p1 + 1);
if (p2 < 0) return p1 + 1;
return p2 + 1;
}
if (path.charCodeAt(1) === CharacterCodes.colon) {
if (path.charCodeAt(2) === CharacterCodes.slash) return 3;
return 2;
}
// Per RFC 1738 'file' URI schema has the shape file://<host>/<path>
// if <host> is omitted then it is assumed that host value is 'localhost',
// however slash after the omitted <host> is not removed.
// file:///folder1/file1 - this is a correct URI
// file://folder2/file2 - this is an incorrect URI
if (path.lastIndexOf("file:///", 0) === 0) {
return "file:///".length;
}
let idx = path.indexOf('://');
if (idx !== -1) {
return idx + "://".length;
}
return 0;
}
export let directorySeparator = "/";
function getNormalizedParts(normalizedSlashedPath: string, rootLength: number) {
let parts = normalizedSlashedPath.substr(rootLength).split(directorySeparator);
let normalized: string[] = [];
for (let part of parts) {
if (part !== ".") {
if (part === ".." && normalized.length > 0 && lastOrUndefined(normalized) !== "..") {
normalized.pop();
}
else {
// A part may be an empty string (which is 'falsy') if the path had consecutive slashes,
// e.g. "path//file.ts". Drop these before re-joining the parts.
if(part) {
normalized.push(part);
}
}
}
}
return normalized;
}
export function normalizePath(path: string): string {
path = normalizeSlashes(path);
let rootLength = getRootLength(path);
let normalized = getNormalizedParts(path, rootLength);
return path.substr(0, rootLength) + normalized.join(directorySeparator);
}
export function getDirectoryPath(path: string) {
return path.substr(0, Math.max(getRootLength(path), path.lastIndexOf(directorySeparator)));
}
export function isUrl(path: string) {
return path && !isRootedDiskPath(path) && path.indexOf("://") !== -1;
}
export function isRootedDiskPath(path: string) {
return getRootLength(path) !== 0;
}
function normalizedPathComponents(path: string, rootLength: number) {
let normalizedParts = getNormalizedParts(path, rootLength);
return [path.substr(0, rootLength)].concat(normalizedParts);
}
export function getNormalizedPathComponents(path: string, currentDirectory: string) {
path = normalizeSlashes(path);
let rootLength = getRootLength(path);
if (rootLength === 0) {
// If the path is not rooted it is relative to current directory
path = combinePaths(normalizeSlashes(currentDirectory), path);
rootLength = getRootLength(path);
}
return normalizedPathComponents(path, rootLength);
}
export function getNormalizedAbsolutePath(fileName: string, currentDirectory: string) {
return getNormalizedPathFromPathComponents(getNormalizedPathComponents(fileName, currentDirectory));
}
export function getNormalizedPathFromPathComponents(pathComponents: string[]) {
if (pathComponents && pathComponents.length) {
return pathComponents[0] + pathComponents.slice(1).join(directorySeparator);
}
}
function getNormalizedPathComponentsOfUrl(url: string) {
// Get root length of http://www.website.com/folder1/foler2/
// In this example the root is: http://www.website.com/
// normalized path components should be ["http://www.website.com/", "folder1", "folder2"]
let urlLength = url.length;
// Initial root length is http:// part
let rootLength = url.indexOf("://") + "://".length;
while (rootLength < urlLength) {
// Consume all immediate slashes in the protocol
// eg.initial rootlength is just file:// but it needs to consume another "/" in file:///
if (url.charCodeAt(rootLength) === CharacterCodes.slash) {
rootLength++;
}
else {
// non slash character means we continue proceeding to next component of root search
break;
}
}
// there are no parts after http:// just return current string as the pathComponent
if (rootLength === urlLength) {
return [url];
}
// Find the index of "/" after website.com so the root can be http://www.website.com/ (from existing http://)
let indexOfNextSlash = url.indexOf(directorySeparator, rootLength);
if (indexOfNextSlash !== -1) {
// Found the "/" after the website.com so the root is length of http://www.website.com/
// and get components afetr the root normally like any other folder components
rootLength = indexOfNextSlash + 1;
return normalizedPathComponents(url, rootLength);
}
else {
// Can't find the host assume the rest of the string as component
// but make sure we append "/" to it as root is not joined using "/"
// eg. if url passed in was http://website.com we want to use root as [http://website.com/]
// so that other path manipulations will be correct and it can be merged with relative paths correctly
return [url + directorySeparator];
}
}
function getNormalizedPathOrUrlComponents(pathOrUrl: string, currentDirectory: string) {
if (isUrl(pathOrUrl)) {
return getNormalizedPathComponentsOfUrl(pathOrUrl);
}
else {
return getNormalizedPathComponents(pathOrUrl, currentDirectory);
}
}
export function getRelativePathToDirectoryOrUrl(directoryPathOrUrl: string, relativeOrAbsolutePath: string, currentDirectory: string, getCanonicalFileName: (fileName: string) => string, isAbsolutePathAnUrl: boolean) {
let pathComponents = getNormalizedPathOrUrlComponents(relativeOrAbsolutePath, currentDirectory);
let directoryComponents = getNormalizedPathOrUrlComponents(directoryPathOrUrl, currentDirectory);
if (directoryComponents.length > 1 && lastOrUndefined(directoryComponents) === "") {
// If the directory path given was of type test/cases/ then we really need components of directory to be only till its name
// that is ["test", "cases", ""] needs to be actually ["test", "cases"]
directoryComponents.length--;
}
// Find the component that differs
for (var joinStartIndex = 0; joinStartIndex < pathComponents.length && joinStartIndex < directoryComponents.length; joinStartIndex++) {
if (getCanonicalFileName(directoryComponents[joinStartIndex]) !== getCanonicalFileName(pathComponents[joinStartIndex])) {
break;
}
}
// Get the relative path
if (joinStartIndex) {
let relativePath = "";
let relativePathComponents = pathComponents.slice(joinStartIndex, pathComponents.length);
for (; joinStartIndex < directoryComponents.length; joinStartIndex++) {
if (directoryComponents[joinStartIndex] !== "") {
relativePath = relativePath + ".." + directorySeparator;
}
}
return relativePath + relativePathComponents.join(directorySeparator);
}
// Cant find the relative path, get the absolute path
let absolutePath = getNormalizedPathFromPathComponents(pathComponents);
if (isAbsolutePathAnUrl && isRootedDiskPath(absolutePath)) {
absolutePath = "file:///" + absolutePath;
}
return absolutePath;
}
export function getBaseFileName(path: string) {
let i = path.lastIndexOf(directorySeparator);
return i < 0 ? path : path.substring(i + 1);
}
export function combinePaths(path1: string, path2: string) {
if (!(path1 && path1.length)) return path2;
if (!(path2 && path2.length)) return path1;
if (getRootLength(path2) !== 0) return path2;
if (path1.charAt(path1.length - 1) === directorySeparator) return path1 + path2;
return path1 + directorySeparator + path2;
}
export function fileExtensionIs(path: string, extension: string): boolean {
let pathLen = path.length;
let extLen = extension.length;
return pathLen > extLen && path.substr(pathLen - extLen, extLen) === extension;
}
/**
* List of supported extensions in order of file resolution precedence.
*/
export const supportedExtensions = [".tsx", ".ts", ".d.ts"];
const extensionsToRemove = [".d.ts", ".ts", ".js", ".tsx", ".jsx"];
export function removeFileExtension(path: string): string {
for (let ext of extensionsToRemove) {
if (fileExtensionIs(path, ext)) {
return path.substr(0, path.length - ext.length);
}
}
return path;
}
let backslashOrDoubleQuote = /[\"\\]/g;
let escapedCharsRegExp = /[\u0000-\u001f\t\v\f\b\r\n\u2028\u2029\u0085]/g;
let escapedCharsMap: Map<string> = {
"\0": "\\0",
"\t": "\\t",
"\v": "\\v",
"\f": "\\f",
"\b": "\\b",
"\r": "\\r",
"\n": "\\n",
"\\": "\\\\",
"\"": "\\\"",
"\u2028": "\\u2028", // lineSeparator
"\u2029": "\\u2029", // paragraphSeparator
"\u0085": "\\u0085" // nextLine
};
export interface ObjectAllocator {
getNodeConstructor(kind: SyntaxKind): new () => Node;
getSymbolConstructor(): new (flags: SymbolFlags, name: string) => Symbol;
getTypeConstructor(): new (checker: TypeChecker, flags: TypeFlags) => Type;
getSignatureConstructor(): new (checker: TypeChecker) => Signature;
}
function Symbol(flags: SymbolFlags, name: string) {
this.flags = flags;
this.name = name;
this.declarations = undefined;
}
function Type(checker: TypeChecker, flags: TypeFlags) {
this.flags = flags;
}
function Signature(checker: TypeChecker) {
}
export let objectAllocator: ObjectAllocator = {
getNodeConstructor: kind => {
function Node() {
}
Node.prototype = {
kind: kind,
pos: -1,
end: -1,
flags: 0,
parent: undefined,
};
return <any>Node;
},
getSymbolConstructor: () => <any>Symbol,
getTypeConstructor: () => <any>Type,
getSignatureConstructor: () => <any>Signature
}
export const enum AssertionLevel {
None = 0,
Normal = 1,
Aggressive = 2,
VeryAggressive = 3,
}
export module Debug {
let currentAssertionLevel = AssertionLevel.None;
export function shouldAssert(level: AssertionLevel): boolean {
return currentAssertionLevel >= level;
}
export function assert(expression: boolean, message?: string, verboseDebugInfo?: () => string): void {
if (!expression) {
let verboseDebugString = "";
if (verboseDebugInfo) {
verboseDebugString = "\r\nVerbose Debug Information: " + verboseDebugInfo();
}
throw new Error("Debug Failure. False expression: " + (message || "") + verboseDebugString);
}
}
export function fail(message?: string): void {
Debug.assert(false, message);
}
}
}