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-rw-r--r--js/v8_source_maps.ts285
1 files changed, 0 insertions, 285 deletions
diff --git a/js/v8_source_maps.ts b/js/v8_source_maps.ts
deleted file mode 100644
index dcdde16c7..000000000
--- a/js/v8_source_maps.ts
+++ /dev/null
@@ -1,285 +0,0 @@
-// Copyright 2014 Evan Wallace
-// Copyright 2018 the Deno authors. All rights reserved. MIT license.
-// Originated from source-map-support but has been heavily modified for deno.
-
-import { SourceMapConsumer, MappedPosition } from "source-map";
-import { CallSite, RawSourceMap } from "./types";
-import { atob } from "./text_encoding";
-
-const consumers = new Map<string, SourceMapConsumer>();
-
-interface Options {
- // A callback the returns generated file contents.
- getGeneratedContents: GetGeneratedContentsCallback;
- // Usually set the following to true. Set to false for testing.
- installPrepareStackTrace: boolean;
-}
-
-interface Position {
- source: string; // Filename
- column: number;
- line: number;
-}
-
-type GetGeneratedContentsCallback = (fileName: string) => string | RawSourceMap;
-
-let getGeneratedContents: GetGeneratedContentsCallback;
-
-// @internal
-export function install(options: Options) {
- getGeneratedContents = options.getGeneratedContents;
- if (options.installPrepareStackTrace) {
- Error.prepareStackTrace = prepareStackTraceWrapper;
- }
-}
-
-// @internal
-export function prepareStackTraceWrapper(
- error: Error,
- stack: CallSite[]
-): string {
- try {
- return prepareStackTrace(error, stack);
- } catch (prepareStackError) {
- Error.prepareStackTrace = undefined;
- console.log("=====Error inside of prepareStackTrace====");
- console.log(prepareStackError.stack.toString());
- console.log("=====Original error=======================");
- throw error;
- }
-}
-
-// @internal
-export function prepareStackTrace(error: Error, stack: CallSite[]): string {
- const frames = stack.map(
- frame => `\n at ${wrapCallSite(frame).toString()}`
- );
- return `${error.toString()}${frames.join("")}`;
-}
-
-// @internal
-export function wrapCallSite(frame: CallSite): CallSite {
- if (frame.isNative()) {
- return frame;
- }
-
- // Most call sites will return the source file from getFileName(), but code
- // passed to eval() ending in "//# sourceURL=..." will return the source file
- // from getScriptNameOrSourceURL() instead
- const source = frame.getFileName() || frame.getScriptNameOrSourceURL();
-
- if (source) {
- const line = frame.getLineNumber() || 0;
- const column = (frame.getColumnNumber() || 1) - 1;
- const position = mapSourcePosition({ source, line, column });
- frame = cloneCallSite(frame);
- Object.assign(frame, {
- getFileName: () => position.source,
- getLineNumber: () => position.line,
- getColumnNumber: () => Number(position.column) + 1,
- getScriptNameOrSourceURL: () => position.source,
- toString: () => CallSiteToString(frame)
- });
- return frame;
- }
-
- // Code called using eval() needs special handling
- let origin = (frame.isEval() && frame.getEvalOrigin()) || undefined;
- if (origin) {
- origin = mapEvalOrigin(origin);
- frame = cloneCallSite(frame);
- Object.assign(frame, {
- getEvalOrigin: () => origin,
- toString: () => CallSiteToString(frame)
- });
- return frame;
- }
-
- // If we get here then we were unable to change the source position
- return frame;
-}
-
-function cloneCallSite(
- frame: CallSite
- // mixin: Partial<CallSite> & { toString: () => string }
-): CallSite {
- const obj = {} as CallSite;
- const props = Object.getOwnPropertyNames(
- Object.getPrototypeOf(frame)
- ) as Array<keyof CallSite>;
- for (const name of props) {
- obj[name] = /^(?:is|get)/.test(name)
- ? () => frame[name].call(frame)
- : frame[name];
- }
- return obj;
-}
-
-// Taken from source-map-support, original copied from V8's messages.js
-// MIT License. Copyright (c) 2014 Evan Wallace
-function CallSiteToString(frame: CallSite): string {
- let fileLocation = "";
- if (frame.isNative()) {
- fileLocation = "native";
- } else {
- const fileName = frame.getScriptNameOrSourceURL();
- if (!fileName && frame.isEval()) {
- fileLocation = frame.getEvalOrigin() || "";
- fileLocation += ", "; // Expecting source position to follow.
- }
-
- if (fileName) {
- fileLocation += fileName;
- } else {
- // Source code does not originate from a file and is not native, but we
- // can still get the source position inside the source string, e.g. in
- // an eval string.
- fileLocation += "<anonymous>";
- }
- const lineNumber = frame.getLineNumber();
- if (lineNumber != null) {
- fileLocation += `:${lineNumber}`;
- const columnNumber = frame.getColumnNumber();
- if (columnNumber) {
- fileLocation += `:${columnNumber}`;
- }
- }
- }
-
- let line = "";
- const functionName = frame.getFunctionName();
- let addSuffix = true;
- const isConstructor = frame.isConstructor();
- const isMethodCall = !(frame.isToplevel() || isConstructor);
- if (isMethodCall) {
- let typeName = frame.getTypeName();
- // Fixes shim to be backward compatible with Node v0 to v4
- if (typeName === "[object Object]") {
- typeName = "null";
- }
- const methodName = frame.getMethodName();
- if (functionName) {
- if (typeName && functionName.indexOf(typeName) !== 0) {
- line += `${typeName}.`;
- }
- line += functionName;
- if (
- methodName &&
- functionName.indexOf("." + methodName) !==
- functionName.length - methodName.length - 1
- ) {
- line += ` [as ${methodName} ]`;
- }
- } else {
- line += `${typeName}.${methodName || "<anonymous>"}`;
- }
- } else if (isConstructor) {
- line += `new ${functionName || "<anonymous>"}`;
- } else if (functionName) {
- line += functionName;
- } else {
- line += fileLocation;
- addSuffix = false;
- }
- if (addSuffix) {
- line += ` (${fileLocation})`;
- }
- return line;
-}
-
-// Regex for detecting source maps
-const reSourceMap = /^data:application\/json[^,]+base64,/;
-
-export function loadConsumer(source: string): SourceMapConsumer | null {
- let consumer = consumers.get(source);
- if (consumer == null) {
- const code = getGeneratedContents(source);
- if (!code) {
- return null;
- }
- if (typeof code !== "string") {
- throw new Error("expected string");
- }
-
- let sourceMappingURL = retrieveSourceMapURL(code);
- if (!sourceMappingURL) {
- throw Error("No source map?");
- }
-
- let sourceMapData: string | RawSourceMap;
- if (reSourceMap.test(sourceMappingURL)) {
- // Support source map URL as a data url
- const rawData = sourceMappingURL.slice(sourceMappingURL.indexOf(",") + 1);
- sourceMapData = atob(rawData);
- sourceMappingURL = source;
- } else {
- // TODO Support source map URLs relative to the source URL
- // sourceMappingURL = supportRelativeURL(source, sourceMappingURL);
- sourceMapData = getGeneratedContents(sourceMappingURL);
- }
-
- const rawSourceMap =
- typeof sourceMapData === "string"
- ? (JSON.parse(sourceMapData) as RawSourceMap)
- : sourceMapData;
- consumer = new SourceMapConsumer(rawSourceMap);
- consumers.set(source, consumer);
- }
- return consumer;
-}
-
-// tslint:disable-next-line:max-line-length
-const sourceMapUrlRe = /(?:\/\/[@#][ \t]+sourceMappingURL=([^\s'"]+?)[ \t]*$)|(?:\/\*[@#][ \t]+sourceMappingURL=([^\*]+?)[ \t]*(?:\*\/)[ \t]*$)/gm;
-
-function retrieveSourceMapURL(fileData: string): string | null {
- // Keep executing the search to find the *last* sourceMappingURL to avoid
- // picking up sourceMappingURLs from comments, strings, etc.
- let lastMatch, match;
- while ((match = sourceMapUrlRe.exec(fileData))) {
- lastMatch = match;
- }
- if (!lastMatch) {
- return null;
- }
- return lastMatch[1];
-}
-
-export function mapSourcePosition(position: Position): MappedPosition {
- const consumer = loadConsumer(position.source);
- if (consumer == null) {
- return position;
- }
- return consumer.originalPositionFor(position);
-}
-
-const stackEvalRe = /^eval at ([^(]+) \((.+):(\d+):(\d+)\)$/;
-const nestedEvalRe = /^eval at ([^(]+) \((.+)\)$/;
-
-// Parses code generated by FormatEvalOrigin(), a function inside V8:
-// https://code.google.com/p/v8/source/browse/trunk/src/messages.js
-function mapEvalOrigin(origin: string): string {
- // Most eval() calls are in this format
- let match = stackEvalRe.exec(origin);
- if (match) {
- const position = mapSourcePosition({
- source: match[2],
- line: Number(match[3]),
- column: Number(match[4]) - 1
- });
- const pos = [
- position.source,
- position.line,
- Number(position.column) + 1
- ].join(":");
- return `eval at ${match[1]} (${pos})`;
- }
-
- // Parse nested eval() calls using recursion
- match = nestedEvalRe.exec(origin);
- if (match) {
- return `eval at ${match[1]} (${mapEvalOrigin(match[2])})`;
- }
-
- // Make sure we still return useful information if we didn't find anything
- return origin;
-}
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