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Compiler cleanups and minor improvements (#1656)

This commit is contained in:
Kitson Kelly 2019-02-03 10:27:53 +11:00 committed by Ryan Dahl
parent c324182252
commit efa1eeb8b3
9 changed files with 146 additions and 152 deletions

View file

@ -6,16 +6,19 @@ import { Console } from "./console";
import { globalEval } from "./global_eval";
import { libdeno } from "./libdeno";
import * as os from "./os";
import { clearTimer, setTimeout } from "./timers";
import { TextDecoder, TextEncoder } from "./text_encoding";
import { clearTimer, setTimeout } from "./timers";
import { postMessage, workerClose, workerMain } from "./workers";
import { assert, log, notImplemented } from "./util";
const EOL = "\n";
const ASSETS = "$asset$";
const LIB_RUNTIME = "lib.deno_runtime.d.ts";
const LIB_RUNTIME = `${ASSETS}/lib.deno_runtime.d.ts`;
// A reference to the global scope
const window = globalEval("this");
// An instance of console
const console = new Console(libdeno.print);
/** The location that a module is being loaded from. This could be a directory,
@ -42,7 +45,7 @@ type SourceCode = string;
/** The output source map */
type SourceMap = string;
/** The format of the work message payload coming from the privilaged side */
/** The format of the work message payload coming from the privileged side */
interface CompilerLookup {
specifier: ModuleSpecifier;
referrer: ContainingFile;
@ -87,8 +90,12 @@ class ModuleMetaData implements ts.IScriptSnapshot {
}
}
/** TypeScript IScriptSnapshot Interface */
public getText(start: number, end: number): string {
return this.sourceCode.substring(start, end);
return start === 0 && end === this.sourceCode.length
? this.sourceCode
: this.sourceCode.substring(start, end);
}
public getLength(): number {
@ -101,10 +108,11 @@ class ModuleMetaData implements ts.IScriptSnapshot {
}
}
/** Returns the TypeScript Extension enum for a given media type. */
function getExtension(
fileName: ModuleFileName,
mediaType: msg.MediaType
): ts.Extension | undefined {
): ts.Extension {
switch (mediaType) {
case msg.MediaType.JavaScript:
return ts.Extension.Js;
@ -114,7 +122,7 @@ function getExtension(
return ts.Extension.Json;
case msg.MediaType.Unknown:
default:
return undefined;
throw TypeError("Cannot resolve extension.");
}
}
@ -123,8 +131,11 @@ function jsonEsmTemplate(
jsonString: string,
sourceFileName: string
): OutputCode {
// tslint:disable-next-line:max-line-length
return `const _json = JSON.parse(\`${jsonString}\`)\nexport default _json;\n//# sourceURL=${sourceFileName}`;
return (
`const _json = JSON.parse(\`${jsonString}\`);\n` +
`export default _json;\n` +
`//# sourceURL=${sourceFileName}\n`
);
}
/** A singleton class that combines the TypeScript Language Service host API
@ -171,9 +182,6 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
// testing
private _ts: Ts = ts;
// Flags forcing recompilation of TS code
public recompile = false;
/** The TypeScript language service often refers to the resolved fileName of
* a module, this is a shortcut to avoid unnecessary module resolution logic
* for modules that may have been initially resolved by a `moduleSpecifier`
@ -185,11 +193,12 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
private _getModuleMetaData(
fileName: ModuleFileName
): ModuleMetaData | undefined {
return this._moduleMetaDataMap.has(fileName)
? this._moduleMetaDataMap.get(fileName)
: fileName.startsWith(ASSETS)
? this.resolveModule(fileName, "")
: undefined;
return (
this._moduleMetaDataMap.get(fileName) ||
(fileName.startsWith(ASSETS)
? this._resolveModule(fileName, "")
: undefined)
);
}
/** Given a `moduleSpecifier` and `containingFile` retrieve the cached
@ -200,7 +209,7 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
moduleSpecifier: ModuleSpecifier,
containingFile: ContainingFile
): ModuleFileName | undefined {
this._log("compiler.resolveFileName", { moduleSpecifier, containingFile });
this._log("compiler._resolveFileName", { moduleSpecifier, containingFile });
const innerMap = this._fileNamesMap.get(containingFile);
if (innerMap) {
return innerMap.get(moduleSpecifier);
@ -208,6 +217,70 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
return undefined;
}
/** Given a `moduleSpecifier` and `containingFile`, resolve the module and
* return the `ModuleMetaData`.
*/
private _resolveModule(
moduleSpecifier: ModuleSpecifier,
containingFile: ContainingFile
): ModuleMetaData {
this._log("compiler._resolveModule", { moduleSpecifier, containingFile });
assert(moduleSpecifier != null && moduleSpecifier.length > 0);
let fileName = this._resolveFileName(moduleSpecifier, containingFile);
if (fileName && this._moduleMetaDataMap.has(fileName)) {
return this._moduleMetaDataMap.get(fileName)!;
}
let moduleId: ModuleId | undefined;
let mediaType = msg.MediaType.Unknown;
let sourceCode: SourceCode | undefined;
if (
moduleSpecifier.startsWith(ASSETS) ||
containingFile.startsWith(ASSETS)
) {
// Assets are compiled into the runtime javascript bundle.
// we _know_ `.pop()` will return a string, but TypeScript doesn't so
// not null assertion
moduleId = moduleSpecifier.split("/").pop()!;
const assetName = moduleId.includes(".") ? moduleId : `${moduleId}.d.ts`;
assert(assetName in assetSourceCode, `No such asset "${assetName}"`);
mediaType = msg.MediaType.TypeScript;
sourceCode = assetSourceCode[assetName];
fileName = `${ASSETS}/${assetName}`;
} else {
// We query Rust with a CodeFetch message. It will load the sourceCode,
// and if there is any outputCode cached, will return that as well.
const fetchResponse = this._os.codeFetch(moduleSpecifier, containingFile);
moduleId = fetchResponse.moduleName;
fileName = fetchResponse.filename;
mediaType = fetchResponse.mediaType;
sourceCode = fetchResponse.sourceCode;
}
assert(moduleId != null, "No module ID.");
assert(fileName != null, "No file name.");
assert(
mediaType !== msg.MediaType.Unknown,
`Unknown media type for: "${moduleSpecifier}" from "${containingFile}".`
);
this._log(
"resolveModule sourceCode length:",
sourceCode && sourceCode.length
);
this._log("resolveModule has media type:", msg.MediaType[mediaType]);
// fileName is asserted above, but TypeScript does not track so not null
this._setFileName(moduleSpecifier, containingFile, fileName!);
if (fileName && this._moduleMetaDataMap.has(fileName)) {
return this._moduleMetaDataMap.get(fileName)!;
}
const moduleMetaData = new ModuleMetaData(
moduleId!,
fileName!,
mediaType,
sourceCode
);
this._moduleMetaDataMap.set(fileName!, moduleMetaData);
return moduleMetaData;
}
/** Caches the resolved `fileName` in relationship to the `moduleSpecifier`
* and `containingFile` in order to reduce calls to the privileged side
* to retrieve the contents of a module.
@ -217,7 +290,7 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
containingFile: ContainingFile,
fileName: ModuleFileName
): void {
this._log("compiler.setFileName", { moduleSpecifier, containingFile });
this._log("compiler._setFileName", { moduleSpecifier, containingFile });
let innerMap = this._fileNamesMap.get(containingFile);
if (!innerMap) {
innerMap = new Map();
@ -233,19 +306,16 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
// Deno specific compiler API
/** Retrieve the output of the TypeScript compiler for a given module and
* cache the result. Re-compilation can be forced using '--recompile' flag.
* cache the result.
*/
compile(
moduleSpecifier: ModuleSpecifier,
containingFile: ContainingFile
): ModuleMetaData {
const moduleMetaData = this.resolveModule(moduleSpecifier, containingFile);
this._scriptFileNames = [moduleMetaData.fileName];
const recompile = !!this.recompile;
if (!recompile && moduleMetaData.outputCode) {
return moduleMetaData;
}
const { fileName, sourceCode, mediaType, moduleId } = moduleMetaData;
this._log("compiler.compile", { moduleSpecifier, containingFile });
const moduleMetaData = this._resolveModule(moduleSpecifier, containingFile);
const { fileName, mediaType, moduleId, sourceCode } = moduleMetaData;
this._scriptFileNames = [fileName];
console.warn("Compiling", moduleId);
// Instead of using TypeScript to transpile JSON modules, we will just do
// it directly.
@ -317,81 +387,6 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
return moduleMetaData;
}
/** Given a `moduleSpecifier` and `containingFile`, resolve the module and
* return the `ModuleMetaData`.
*/
resolveModule(
moduleSpecifier: ModuleSpecifier,
containingFile: ContainingFile
): ModuleMetaData {
this._log("compiler.resolveModule", { moduleSpecifier, containingFile });
assert(moduleSpecifier != null && moduleSpecifier.length > 0);
let fileName = this._resolveFileName(moduleSpecifier, containingFile);
if (fileName && this._moduleMetaDataMap.has(fileName)) {
return this._moduleMetaDataMap.get(fileName)!;
}
let moduleId: ModuleId | undefined;
let mediaType = msg.MediaType.Unknown;
let sourceCode: SourceCode | undefined;
let outputCode: OutputCode | undefined;
let sourceMap: SourceMap | undefined;
if (
moduleSpecifier.startsWith(ASSETS) ||
containingFile.startsWith(ASSETS)
) {
// Assets are compiled into the runtime javascript bundle.
// we _know_ `.pop()` will return a string, but TypeScript doesn't so
// not null assertion
moduleId = moduleSpecifier.split("/").pop()!;
const assetName = moduleId.includes(".") ? moduleId : `${moduleId}.d.ts`;
assert(assetName in assetSourceCode, `No such asset "${assetName}"`);
mediaType = msg.MediaType.TypeScript;
sourceCode = assetSourceCode[assetName];
fileName = `${ASSETS}/${assetName}`;
outputCode = "";
sourceMap = "";
} else {
// We query Rust with a CodeFetch message. It will load the sourceCode,
// and if there is any outputCode cached, will return that as well.
const fetchResponse = this._os.codeFetch(moduleSpecifier, containingFile);
moduleId = fetchResponse.moduleName;
fileName = fetchResponse.filename;
mediaType = fetchResponse.mediaType;
sourceCode = fetchResponse.sourceCode;
outputCode = fetchResponse.outputCode;
sourceMap =
fetchResponse.sourceMap && JSON.parse(fetchResponse.sourceMap);
}
assert(moduleId != null, "No module ID.");
assert(fileName != null, "No file name.");
assert(
mediaType !== msg.MediaType.Unknown,
`Unknown media type for: "${moduleSpecifier}" from "${containingFile}".`
);
this._log(
"resolveModule sourceCode length:",
sourceCode && sourceCode.length
);
this._log("resolveModule has outputCode:", outputCode != null);
this._log("resolveModule has source map:", sourceMap != null);
this._log("resolveModule has media type:", msg.MediaType[mediaType]);
// fileName is asserted above, but TypeScript does not track so not null
this._setFileName(moduleSpecifier, containingFile, fileName!);
if (fileName && this._moduleMetaDataMap.has(fileName)) {
return this._moduleMetaDataMap.get(fileName)!;
}
const moduleMetaData = new ModuleMetaData(
moduleId!,
fileName!,
mediaType,
sourceCode,
outputCode,
sourceMap
);
this._moduleMetaDataMap.set(fileName!, moduleMetaData);
return moduleMetaData;
}
// TypeScript Language Service and Format Diagnostic Host API
getCanonicalFileName(fileName: string): string {
@ -411,7 +406,7 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
getScriptFileNames(): string[] {
// This is equal to `"files"` in the `tsconfig.json`, therefore we only need
// to include the actual base source files we are evaluating at the moment,
// which would be what is set during the `.run()`
// which would be what is set during the `.compile()`
return this._scriptFileNames;
}
@ -435,9 +430,10 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
}
getScriptVersion(fileName: ModuleFileName): string {
this._log("getScriptVersion()", fileName);
const moduleMetaData = this._getModuleMetaData(fileName);
return (moduleMetaData && moduleMetaData.scriptVersion) || "";
const version = (moduleMetaData && moduleMetaData.scriptVersion) || "";
this._log("getScriptVersion()", fileName, version);
return version;
}
getScriptSnapshot(fileName: ModuleFileName): ts.IScriptSnapshot | undefined {
@ -453,8 +449,9 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
getDefaultLibFileName(): string {
this._log("getDefaultLibFileName()");
const moduleSpecifier = LIB_RUNTIME;
const moduleMetaData = this.resolveModule(moduleSpecifier, ASSETS);
return moduleMetaData.fileName;
const moduleMetaData = this._getModuleMetaData(moduleSpecifier);
assert(moduleMetaData != null);
return moduleMetaData!.fileName;
}
useCaseSensitiveFileNames(): boolean {
@ -479,15 +476,16 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
containingFile: ContainingFile
): Array<ts.ResolvedModuleFull | ts.ResolvedModule> {
this._log("resolveModuleNames()", { moduleNames, containingFile });
return moduleNames.map(name => {
const resolvedModuleNames: ts.ResolvedModuleFull[] = [];
for (const moduleName of moduleNames) {
let moduleMetaData: ModuleMetaData;
if (name === "deno") {
if (moduleName === "deno") {
// builtin modules are part of the runtime lib
moduleMetaData = this.resolveModule(LIB_RUNTIME, ASSETS);
} else if (name === "typescript") {
moduleMetaData = this.resolveModule("typescript.d.ts", ASSETS);
moduleMetaData = this._getModuleMetaData(LIB_RUNTIME)!;
} else if (moduleName === "typescript") {
moduleMetaData = this._getModuleMetaData(`${ASSETS}/typescript.d.ts`)!;
} else {
moduleMetaData = this.resolveModule(name, containingFile);
moduleMetaData = this._resolveModule(moduleName, containingFile);
}
// According to the interface we shouldn't return `undefined` but if we
// fail to return the same length of modules to those we cannot resolve
@ -500,19 +498,18 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
// This flags to the compiler to not go looking to transpile functional
// code, anything that is in `/$asset$/` is just library code
const isExternalLibraryImport = resolvedFileName.startsWith(ASSETS);
return {
resolvedModuleNames.push({
resolvedFileName,
isExternalLibraryImport,
extension: getExtension(resolvedFileName, moduleMetaData.mediaType)
};
});
}
return resolvedModuleNames;
}
}
const compiler = new Compiler();
let startResMsg: msg.StartRes;
// set global objects for compiler web worker
window.clearTimeout = clearTimer;
window.console = console;
@ -523,19 +520,17 @@ window.close = workerClose;
window.TextDecoder = TextDecoder;
window.TextEncoder = TextEncoder;
// provide the "main" function that will be called by the privilaged side when
// provide the "main" function that will be called by the privileged side when
// lazy instantiating the compiler web worker
window.compilerMain = function compilerMain() {
// workerMain should have already been called since a compiler is a worker.
const encoder = new TextEncoder();
const decoder = new TextDecoder();
compiler.recompile = startResMsg.recompileFlag();
log(`recompile ${compiler.recompile}`);
window.onmessage = ({ data }: { data: Uint8Array }) => {
const json = decoder.decode(data);
const lookup = JSON.parse(json) as CompilerLookup;
const { specifier, referrer } = JSON.parse(json) as CompilerLookup;
const moduleMetaData = compiler.compile(lookup.specifier, lookup.referrer);
const moduleMetaData = compiler.compile(specifier, referrer);
const responseJson = JSON.stringify(moduleMetaData);
const response = encoder.encode(responseJson);
@ -545,5 +540,5 @@ window.compilerMain = function compilerMain() {
/* tslint:disable-next-line:no-default-export */
export default function denoMain() {
startResMsg = os.start();
os.start("TS");
}

View file

@ -19,8 +19,6 @@ interface CodeInfo {
filename: string | undefined;
mediaType: msg.MediaType;
sourceCode: string | undefined;
outputCode: string | undefined;
sourceMap: string | undefined;
}
/** Exit the Deno process with optional exit code. */
@ -35,7 +33,7 @@ export function exit(exitCode = 0): never {
// @internal
export function codeFetch(specifier: string, referrer: string): CodeInfo {
util.log("os.ts codeFetch", specifier, referrer);
util.log("os.codeFetch", { specifier, referrer });
// Send CodeFetch message
const builder = flatbuffers.createBuilder();
const specifier_ = builder.createString(specifier);
@ -58,9 +56,7 @@ export function codeFetch(specifier: string, referrer: string): CodeInfo {
moduleName: codeFetchRes.moduleName() || undefined,
filename: codeFetchRes.filename() || undefined,
mediaType: codeFetchRes.mediaType(),
sourceCode: codeFetchRes.sourceCode() || undefined,
outputCode: codeFetchRes.outputCode() || undefined,
sourceMap: codeFetchRes.sourceMap() || undefined
sourceCode: codeFetchRes.sourceCode() || undefined
};
}
@ -71,7 +67,12 @@ export function codeCache(
outputCode: string,
sourceMap: string
): void {
util.log("os.ts codeCache", filename, sourceCode, outputCode);
util.log("os.codeCache", {
filename,
sourceCodeLength: sourceCode.length,
outputCodeLength: outputCode.length,
sourceMapLength: sourceMap.length
});
const builder = flatbuffers.createBuilder();
const filename_ = builder.createString(filename);
const sourceCode_ = builder.createString(sourceCode);
@ -160,7 +161,7 @@ function sendStart(): msg.StartRes {
// This function bootstraps an environment within Deno, it is shared both by
// the runtime and the compiler environments.
// @internal
export function start(): msg.StartRes {
export function start(source?: string): msg.StartRes {
libdeno.recv(handleAsyncMsgFromRust);
// First we send an empty `Start` message to let the privileged side know we
@ -168,7 +169,7 @@ export function start(): msg.StartRes {
// args and other info.
const startResMsg = sendStart();
util.setLogDebug(startResMsg.debugFlag());
util.setLogDebug(startResMsg.debugFlag(), source);
return startResMsg;
}

View file

@ -2,10 +2,14 @@
import { TypedArray } from "./types";
let logDebug = false;
let logSource = "JS";
// @internal
export function setLogDebug(debug: boolean): void {
export function setLogDebug(debug: boolean, source?: string): void {
logDebug = debug;
if (source) {
logSource = source;
}
}
/** Debug logging for deno.
@ -15,7 +19,7 @@ export function setLogDebug(debug: boolean): void {
// tslint:disable-next-line:no-any
export function log(...args: any[]): void {
if (logDebug) {
console.log("DEBUG JS -", ...args);
console.log(`DEBUG ${logSource} -`, ...args);
}
}

View file

@ -154,7 +154,6 @@ table StartRes {
argv: [string];
debug_flag: bool;
deps_flag: bool;
recompile_flag: bool;
types_flag: bool;
version_flag: bool;
deno_version: string;
@ -188,8 +187,6 @@ table CodeFetchRes {
// TODO These should be [ubyte].
// See: https://github.com/denoland/deno/issues/1113
source_code: string;
output_code: string; // Non-empty only if cached.
source_map: string; // Non-empty only if cached.
}
table CodeCache {

View file

@ -234,7 +234,6 @@ fn op_start(
pid: std::process::id(),
argv: Some(argv_off),
debug_flag: state.flags.log_debug,
recompile_flag: state.flags.recompile,
types_flag: state.flags.types,
version_flag: state.flags.version,
v8_version: Some(v8_version_off),
@ -295,19 +294,13 @@ fn op_code_fetch(
Box::new(futures::future::result(|| -> OpResult {
let builder = &mut FlatBufferBuilder::new();
let out = state.dir.code_fetch(specifier, referrer)?;
let mut msg_args = msg::CodeFetchResArgs {
let msg_args = msg::CodeFetchResArgs {
module_name: Some(builder.create_string(&out.module_name)),
filename: Some(builder.create_string(&out.filename)),
media_type: out.media_type,
source_code: Some(builder.create_string(&out.source_code)),
..Default::default()
};
if let Some(ref output_code) = out.maybe_output_code {
msg_args.output_code = Some(builder.create_string(output_code));
}
if let Some(ref source_map) = out.maybe_source_map {
msg_args.source_map = Some(builder.create_string(source_map));
}
let inner = msg::CodeFetchRes::create(builder, &msg_args);
Ok(serialize_response(
cmd_id,

View file

@ -6,8 +6,8 @@ Uncaught NotFound: Cannot resolve module "bad-module.ts" from "[WILDCARD]/tests/
at maybeThrowError ([WILDCARD]/js/errors.ts:[WILDCARD])
at sendSync ([WILDCARD]/js/dispatch.ts:[WILDCARD])
at codeFetch ([WILDCARD]/js/os.ts:[WILDCARD])
at resolveModule ([WILDCARD]/js/compiler.ts:[WILDCARD])
at moduleNames.map.name ([WILDCARD]/js/compiler.ts:[WILDCARD])
at _resolveModule ([WILDCARD]/js/compiler.ts:[WILDCARD])
at resolveModuleNames ([WILDCARD]/js/compiler.ts:[WILDCARD])
at compilerHost.resolveModuleNames ([WILDCARD]typescript.js:[WILDCARD])
at resolveModuleNamesWorker ([WILDCARD]typescript.js:[WILDCARD])
at resolveModuleNamesReusingOldState ([WILDCARD]typescript.js:[WILDCARD])

View file

@ -4,8 +4,8 @@
at maybeThrowError ([WILDCARD]/js/errors.ts:[WILDCARD])
at sendSync ([WILDCARD]/js/dispatch.ts:[WILDCARD])
at codeFetch ([WILDCARD]/js/os.ts:[WILDCARD])
at resolveModule ([WILDCARD]/js/compiler.ts:[WILDCARD])
at moduleNames.map.name ([WILDCARD]/js/compiler.ts:[WILDCARD])
at _resolveModule ([WILDCARD]/js/compiler.ts:[WILDCARD])
at resolveModuleNames ([WILDCARD]/js/compiler.ts:[WILDCARD])
at compilerHost.resolveModuleNames ([WILDCARD])
at resolveModuleNamesWorker ([WILDCARD])
at resolveModuleNamesReusingOldState ([WILDCARD]typescript.js:[WILDCARD])

View file

@ -6,8 +6,8 @@ Uncaught NotFound: Cannot resolve module "./non-existent" from "[WILDCARD]/tests
at maybeThrowError ([WILDCARD]/js/errors.ts:[WILDCARD])
at sendSync ([WILDCARD]/js/dispatch.ts:[WILDCARD])
at codeFetch ([WILDCARD]/js/os.ts:[WILDCARD])
at resolveModule ([WILDCARD]/js/compiler.ts:[WILDCARD])
at moduleNames.map.name ([WILDCARD]/js/compiler.ts:[WILDCARD])
at _resolveModule ([WILDCARD]/js/compiler.ts:[WILDCARD])
at resolveModuleNames ([WILDCARD]/js/compiler.ts:[WILDCARD])
at compilerHost.resolveModuleNames ([WILDCARD])
at resolveModuleNamesWorker ([WILDCARD])
at resolveModuleNamesReusingOldState ([WILDCARD]typescript.js:[WILDCARD])

View file

@ -22,5 +22,9 @@
"target": "esnext",
"types": []
},
"files": ["node_modules/typescript/lib/lib.esnext.d.ts", "js/main.ts"]
"files": [
"node_modules/typescript/lib/lib.esnext.d.ts",
"js/main.ts",
"js/compiler.ts"
]
}