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Code Issues Packages 1 Wiki Activity

Separate source map from output code.

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This commit is contained in:
Kitson Kelly 2018-10-29 10:41:10 +11:00 committed by Ryan Dahl
parent a68403d090
commit 8b39d2c99e
6 changed files with 161 additions and 63 deletions
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52
js/compiler.ts
View file

@ -49,6 +49,8 @@ type ModuleSpecifier = string;
type OutputCode = string;
/** The original source code */
type SourceCode = string;
/** The output source map */
type SourceMap = string;
/** Abstraction of the APIs required from the `os` module so they can be
* easily mocked.
@ -88,7 +90,8 @@ export class ModuleMetaData implements ts.IScriptSnapshot {
public readonly fileName: ModuleFileName,
public readonly mediaType: MediaType,
public readonly sourceCode: SourceCode = "",
public outputCode: OutputCode = ""
public outputCode: OutputCode = "",
public sourceMap: SourceMap = ""
) {
if (outputCode !== "" || fileName.endsWith(".d.ts")) {
this.scriptVersion = "1";
@ -155,9 +158,7 @@ export class DenoCompiler
checkJs: true,
module: ts.ModuleKind.AMD,
outDir: "$deno$",
// TODO https://github.com/denoland/deno/issues/23
inlineSourceMap: true,
inlineSources: true,
sourceMap: true,
stripComments: true,
target: ts.ScriptTarget.ESNext
};
@ -366,6 +367,7 @@ export class DenoCompiler
* compiler instance.
*/
private _setupSourceMaps(): void {
let lastModule: ModuleMetaData | undefined;
sourceMaps.install({
installPrepareStackTrace: true,
getGeneratedContents: (fileName: string): string | RawSourceMap => {
@ -377,13 +379,25 @@ export class DenoCompiler
return libdeno.mainSourceMap;
} else if (fileName === "deno_main.js") {
return "";
} else {
} else if (!fileName.endsWith(".map")) {
const moduleMetaData = this._moduleMetaDataMap.get(fileName);
if (!moduleMetaData) {
this._log("compiler.getGeneratedContents cannot find", fileName);
lastModule = undefined;
return "";
}
lastModule = moduleMetaData;
return moduleMetaData.outputCode;
} else {
if (lastModule && lastModule.sourceMap) {
// Assuming the the map will always be asked for after the source
// code.
const { sourceMap } = lastModule;
lastModule = undefined;
return sourceMap;
} else {
// Errors thrown here are caught by source-map.
throw new Error(`Unable to find source map: "${fileName}"`);
}
}
}
});
@ -431,19 +445,26 @@ export class DenoCompiler
assert(!output.emitSkipped, "The emit was skipped for an unknown reason.");
// Currently we are inlining source maps, there should be only 1 output file
// See: https://github.com/denoland/deno/issues/23
assert(
output.outputFiles.length === 1,
"Only single file should be output."
output.outputFiles.length === 2,
`Expected 2 files to be emitted, got ${output.outputFiles.length}.`
);
const [outputFile] = output.outputFiles;
const [sourceMapFile, outputFile] = output.outputFiles;
assert(
sourceMapFile.name.endsWith(".map"),
"Expected first emitted file to be a source map"
);
assert(
outputFile.name.endsWith(".js"),
"Expected second emitted file to be JavaScript"
);
const outputCode = (moduleMetaData.outputCode = `${
outputFile.text
}\n//# sourceURL=${fileName}`);
const sourceMap = (moduleMetaData.sourceMap = sourceMapFile.text);
moduleMetaData.scriptVersion = "1";
this._os.codeCache(fileName, sourceCode, outputCode);
this._os.codeCache(fileName, sourceCode, outputCode, sourceMap);
return moduleMetaData.outputCode;
}
@ -492,6 +513,7 @@ export class DenoCompiler
let mediaType = MediaType.Unknown;
let sourceCode: SourceCode | undefined;
let outputCode: OutputCode | undefined;
let sourceMap: SourceMap | undefined;
if (
moduleSpecifier.startsWith(ASSETS) ||
containingFile.startsWith(ASSETS)
@ -506,6 +528,7 @@ export class DenoCompiler
sourceCode = assetSourceCode[assetName];
fileName = `${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.
@ -515,6 +538,7 @@ export class DenoCompiler
mediaType = fetchResponse.mediaType;
sourceCode = fetchResponse.sourceCode;
outputCode = fetchResponse.outputCode;
sourceMap = fetchResponse.sourceMap;
}
assert(moduleId != null, "No module ID.");
assert(fileName != null, "No file name.");
@ -528,6 +552,7 @@ export class DenoCompiler
sourceCode && sourceCode.length
);
this._log("resolveModule has outputCode:", outputCode != null);
this._log("resolveModule has source map:", sourceMap != null);
this._log("resolveModule has media type:", MediaType[mediaType]);
// fileName is asserted above, but TypeScript does not track so not null
this._setFileName(moduleSpecifier, containingFile, fileName!);
@ -539,7 +564,8 @@ export class DenoCompiler
fileName!,
mediaType,
sourceCode,
outputCode
outputCode,
sourceMap
);
this._moduleMetaDataMap.set(fileName!, moduleMetaData);
return moduleMetaData;

86
js/compiler_test.ts
View file

@ -9,11 +9,12 @@ import * as ts from "typescript";
const { DenoCompiler } = (deno as any)._compiler;
interface ModuleInfo {
moduleName: string | null;
filename: string | null;
mediaType: MediaType | null;
sourceCode: string | null;
outputCode: string | null;
moduleName: string | undefined;
filename: string | undefined;
mediaType: MediaType | undefined;
sourceCode: string | undefined;
outputCode: string | undefined;
sourceMap: string | undefined;
}
const compilerInstance = DenoCompiler.instance();
@ -36,18 +37,20 @@ enum MediaType {
}
function mockModuleInfo(
moduleName: string | null,
filename: string | null,
mediaType: MediaType | null,
sourceCode: string | null,
outputCode: string | null
moduleName: string | undefined,
filename: string | undefined,
mediaType: MediaType | undefined,
sourceCode: string | undefined,
outputCode: string | undefined,
sourceMap: string | undefined
): ModuleInfo {
return {
moduleName,
filename,
mediaType,
sourceCode,
outputCode
outputCode,
sourceMap
};
}
@ -73,6 +76,7 @@ const modAModuleInfo = mockModuleInfo(
"/root/project/modA.ts",
MediaType.TypeScript,
modASource,
undefined,
undefined
);
@ -88,10 +92,10 @@ const modBModuleInfo = mockModuleInfo(
"/root/project/modB.ts",
MediaType.TypeScript,
modBSource,
undefined,
undefined
);
// TODO(#23) Remove source map strings from fooBarTsOutput.
// tslint:disable:max-line-length
const fooBarTsOutput = `define(["require", "exports", "deno"], function (require, exports, deno) {
"use strict";
@ -99,17 +103,21 @@ const fooBarTsOutput = `define(["require", "exports", "deno"], function (require
console.log(deno);
exports.foo = "bar";
});
//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYmFyLmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsiZmlsZTovLy9yb290L3Byb2plY3QvZm9vL2Jhci50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOzs7SUFDQSxPQUFPLENBQUMsR0FBRyxDQUFDLElBQUksQ0FBQyxDQUFDO0lBQ0wsUUFBQSxHQUFHLEdBQUcsS0FBSyxDQUFDIiwic291cmNlc0NvbnRlbnQiOlsiaW1wb3J0ICogYXMgZGVubyBmcm9tIFwiZGVub1wiO1xuY29uc29sZS5sb2coZGVubyk7XG5leHBvcnQgY29uc3QgZm9vID0gXCJiYXJcIjtcbiJdfQ==
//# sourceMappingURL=bar.js.map
//# sourceURL=/root/project/foo/bar.ts`;
// TODO(#23) Remove source map strings from fooBazTsOutput.
const fooBarTsSourcemap = `{"version":3,"file":"bar.js","sourceRoot":"","sources":["file:///root/project/foo/bar.ts"],"names":[],"mappings":";;;IACA,OAAO,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;IACL,QAAA,GAAG,GAAG,KAAK,CAAC"}`;
const fooBazTsOutput = `define(["require", "exports", "./bar.ts"], function (require, exports, bar_ts_1) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
console.log(bar_ts_1.foo);
});
//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYmF6LmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsiZmlsZTovLy9yb290L3Byb2plY3QvZm9vL2Jhei50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOzs7SUFDQSxPQUFPLENBQUMsR0FBRyxDQUFDLFlBQUcsQ0FBQyxDQUFDIiwic291cmNlc0NvbnRlbnQiOlsiaW1wb3J0IHsgZm9vIH0gZnJvbSBcIi4vYmFyLnRzXCI7XG5jb25zb2xlLmxvZyhmb28pO1xuIl19
//# sourceMappingURL=baz.js.map
//# sourceURL=/root/project/foo/baz.ts`;
// This is not a valid map, just mock data
const fooBazTsSourcemap = `{"version":3,"file":"baz.js","sourceRoot":"","sources":["file:///root/project/foo/baz.ts"],"names":[],"mappings":""}`;
// tslint:enable:max-line-length
const moduleMap: {
@ -121,6 +129,7 @@ const moduleMap: {
"/root/project/foo/bar.ts",
MediaType.TypeScript,
fooBarTsSource,
null,
null
),
"foo/baz.ts": mockModuleInfo(
@ -128,7 +137,8 @@ const moduleMap: {
"/root/project/foo/baz.ts",
MediaType.TypeScript,
fooBazTsSource,
fooBazTsOutput
fooBazTsOutput,
fooBazTsSourcemap
),
"modA.ts": modAModuleInfo,
"some.txt": mockModuleInfo(
@ -136,6 +146,7 @@ const moduleMap: {
"/root/project/some.text",
MediaType.Unknown,
"console.log();",
null,
null
)
},
@ -145,7 +156,8 @@ const moduleMap: {
"/root/project/foo/bar.ts",
MediaType.TypeScript,
fooBarTsSource,
fooBarTsOutput
fooBarTsOutput,
fooBarTsSourcemap
)
},
"/root/project/modA.ts": {
@ -160,6 +172,7 @@ const moduleMap: {
"/moduleKinds/foo.ts",
MediaType.TypeScript,
"console.log('foo');",
undefined,
undefined
),
"foo.d.ts": mockModuleInfo(
@ -167,6 +180,7 @@ const moduleMap: {
"/moduleKinds/foo.d.ts",
MediaType.TypeScript,
"console.log('foo');",
undefined,
undefined
),
"foo.js": mockModuleInfo(
@ -174,6 +188,7 @@ const moduleMap: {
"/moduleKinds/foo.js",
MediaType.JavaScript,
"console.log('foo');",
undefined,
undefined
),
"foo.json": mockModuleInfo(
@ -181,6 +196,7 @@ const moduleMap: {
"/moduleKinds/foo.json",
MediaType.Json,
"console.log('foo');",
undefined,
undefined
),
"foo.txt": mockModuleInfo(
@ -188,6 +204,7 @@ const moduleMap: {
"/moduleKinds/foo.txt",
MediaType.JavaScript,
"console.log('foo');",
undefined,
undefined
)
}
@ -211,6 +228,7 @@ let codeCacheStack: Array<{
fileName: string;
sourceCode: string;
outputCode: string;
sourceMap: string;
}> = [];
let codeFetchStack: Array<{
moduleSpecifier: string;
@ -230,18 +248,25 @@ function logMock(...args: any[]): void {
logStack.push(args);
}
const osMock = {
codeCache(fileName: string, sourceCode: string, outputCode: string): void {
codeCacheStack.push({ fileName, sourceCode, outputCode });
codeCache(
fileName: string,
sourceCode: string,
outputCode: string,
sourceMap: string
): void {
codeCacheStack.push({ fileName, sourceCode, outputCode, sourceMap });
if (fileName in moduleCache) {
moduleCache[fileName].sourceCode = sourceCode;
moduleCache[fileName].outputCode = outputCode;
moduleCache[fileName].sourceMap = sourceMap;
} else {
moduleCache[fileName] = mockModuleInfo(
fileName,
fileName,
MediaType.TypeScript,
sourceCode,
outputCode
outputCode,
sourceMap
);
}
},
@ -252,7 +277,7 @@ const osMock = {
return moduleMap[containingFile][moduleSpecifier];
}
}
return mockModuleInfo(null, null, null, null, null);
return mockModuleInfo(null, null, null, null, null, null);
},
exit(code: number): never {
throw new Error(`os.exit(${code})`);
@ -373,6 +398,7 @@ test(function compilerRun() {
assert(moduleMetaData.hasRun);
assertEqual(moduleMetaData.sourceCode, fooBarTsSource);
assertEqual(moduleMetaData.outputCode, fooBarTsOutput);
assertEqual(moduleMetaData.sourceMap, fooBarTsSourcemap);
assertEqual(moduleMetaData.exports, { foo: "bar" });
assertEqual(
@ -385,6 +411,11 @@ test(function compilerRun() {
1,
"Compiled code should have only been cached once."
);
const [codeCacheCall] = codeCacheStack;
assertEqual(codeCacheCall.fileName, "/root/project/foo/bar.ts");
assertEqual(codeCacheCall.sourceCode, fooBarTsSource);
assertEqual(codeCacheCall.outputCode, fooBarTsOutput);
assertEqual(codeCacheCall.sourceMap, fooBarTsSourcemap);
teardown();
});
@ -456,6 +487,7 @@ test(function compilerResolveModule() {
);
assertEqual(moduleMetaData.sourceCode, fooBazTsSource);
assertEqual(moduleMetaData.outputCode, fooBazTsOutput);
assertEqual(moduleMetaData.sourceMap, fooBazTsSourcemap);
assert(!moduleMetaData.hasRun);
assert(!moduleMetaData.deps);
assertEqual(moduleMetaData.exports, {});
@ -507,18 +539,20 @@ test(function compilerGetModuleDependencies() {
// TypeScript LanguageServiceHost APIs
test(function compilerGetCompilationSettings() {
const result = compilerInstance.getCompilationSettings();
for (const key of [
const expectedKeys = [
"allowJs",
"checkJs",
"module",
"outDir",
"inlineSourceMap",
"inlineSources",
"sourceMap",
"stripComments",
"target"
]) {
];
const result = compilerInstance.getCompilationSettings();
for (const key of expectedKeys) {
assert(key in result, `Expected "${key}" in compiler options.`);
}
assertEqual(Object.keys(result).length, expectedKeys.length);
});
test(function compilerGetNewLine() {

9
js/os.ts
View file

@ -11,6 +11,7 @@ interface CodeInfo {
mediaType: msg.MediaType;
sourceCode: string | undefined;
outputCode: string | undefined;
sourceMap: string | undefined;
}
/** Exit the Deno process with optional exit code. */
@ -52,7 +53,8 @@ export function codeFetch(
filename: codeFetchRes.filename() || undefined,
mediaType: codeFetchRes.mediaType(),
sourceCode: codeFetchRes.sourceCode() || undefined,
outputCode: codeFetchRes.outputCode() || undefined
outputCode: codeFetchRes.outputCode() || undefined,
sourceMap: codeFetchRes.sourceMap() || undefined
};
}
@ -60,17 +62,20 @@ export function codeFetch(
export function codeCache(
filename: string,
sourceCode: string,
outputCode: string
outputCode: string,
sourceMap: string
): void {
util.log("os.ts codeCache", filename, sourceCode, outputCode);
const builder = flatbuffers.createBuilder();
const filename_ = builder.createString(filename);
const sourceCode_ = builder.createString(sourceCode);
const outputCode_ = builder.createString(outputCode);
const sourceMap_ = builder.createString(sourceMap);
msg.CodeCache.startCodeCache(builder);
msg.CodeCache.addFilename(builder, filename_);
msg.CodeCache.addSourceCode(builder, sourceCode_);
msg.CodeCache.addOutputCode(builder, outputCode_);
msg.CodeCache.addSourceMap(builder, sourceMap_);
const inner = msg.CodeCache.endCodeCache(builder);
const baseRes = sendSync(builder, msg.Any.CodeCache, inner);
assert(baseRes == null); // Expect null or error.

56
src/deno_dir.rs
View file

@ -83,19 +83,28 @@ impl DenoDir {
self: &DenoDir,
filename: &str,
source_code: &str,
) -> PathBuf {
) -> (PathBuf, PathBuf) {
let cache_key = source_code_hash(filename, source_code);
self.gen.join(cache_key + ".js")
(
self.gen.join(cache_key.to_string() + ".js"),
self.gen.join(cache_key.to_string() + ".js.map"),
)
}
fn load_cache(
self: &DenoDir,
filename: &str,
source_code: &str,
) -> std::io::Result<String> {
let path = self.cache_path(filename, source_code);
debug!("load_cache {}", path.display());
fs::read_to_string(&path)
) -> Result<(String, String), std::io::Error> {
let (output_code, source_map) = self.cache_path(filename, source_code);
debug!(
"load_cache code: {} map: {}",
output_code.display(),
source_map.display()
);
let read_output_code = fs::read_to_string(&output_code)?;
let read_source_map = fs::read_to_string(&source_map)?;
Ok((read_output_code, read_source_map))
}
pub fn code_cache(
@ -103,16 +112,19 @@ impl DenoDir {
filename: &str,
source_code: &str,
output_code: &str,
source_map: &str,
) -> std::io::Result<()> {
let cache_path = self.cache_path(filename, source_code);
let (cache_path, source_map_path) = self.cache_path(filename, source_code);
// TODO(ry) This is a race condition w.r.t to exists() -- probably should
// create the file in exclusive mode. A worry is what might happen is there
// are two processes and one reads the cache file while the other is in the
// midst of writing it.
if cache_path.exists() {
if cache_path.exists() && source_map_path.exists() {
Ok(())
} else {
fs::write(cache_path, output_code.as_bytes())
fs::write(cache_path, output_code.as_bytes())?;
fs::write(source_map_path, source_map.as_bytes())?;
Ok(())
}
}
@ -176,6 +188,7 @@ impl DenoDir {
media_type,
source_code,
maybe_output_code: None,
maybe_source_map: None,
});
};
let default_attempt = use_extension("");
@ -233,12 +246,13 @@ impl DenoDir {
Err(err.into())
}
}
Ok(output_code) => Ok(CodeFetchOutput {
Ok((output_code, source_map)) => Ok(CodeFetchOutput {
module_name: out.module_name,
filename: out.filename,
media_type: out.media_type,
source_code: out.source_code,
maybe_output_code: Some(output_code),
maybe_source_map: Some(source_map),
}),
}
}
@ -368,6 +382,7 @@ pub struct CodeFetchOutput {
pub media_type: msg::MediaType,
pub source_code: String,
pub maybe_output_code: Option<String>,
pub maybe_source_map: Option<String>,
}
#[cfg(test)]
@ -382,9 +397,14 @@ pub fn test_setup() -> (TempDir, DenoDir) {
fn test_cache_path() {
let (temp_dir, deno_dir) = test_setup();
assert_eq!(
temp_dir
.path()
.join("gen/a3e29aece8d35a19bf9da2bb1c086af71fb36ed5.js"),
(
temp_dir
.path()
.join("gen/a3e29aece8d35a19bf9da2bb1c086af71fb36ed5.js"),
temp_dir
.path()
.join("gen/a3e29aece8d35a19bf9da2bb1c086af71fb36ed5.js.map")
),
deno_dir.cache_path("hello.ts", "1+2")
);
}
@ -396,12 +416,18 @@ fn test_code_cache() {
let filename = "hello.js";
let source_code = "1+2";
let output_code = "1+2 // output code";
let cache_path = deno_dir.cache_path(filename, source_code);
let source_map = "{}";
let (cache_path, source_map_path) =
deno_dir.cache_path(filename, source_code);
assert!(
cache_path.ends_with("gen/e8e3ee6bee4aef2ec63f6ec3db7fc5fdfae910ae.js")
);
assert!(
source_map_path
.ends_with("gen/e8e3ee6bee4aef2ec63f6ec3db7fc5fdfae910ae.js.map")
);
let r = deno_dir.code_cache(filename, source_code, output_code);
let r = deno_dir.code_cache(filename, source_code, output_code, source_map);
r.expect("code_cache error");
assert!(cache_path.exists());
assert_eq!(output_code, fs::read_to_string(&cache_path).unwrap());

4
src/msg.fbs
View file

@ -146,14 +146,18 @@ table CodeFetchRes {
module_name: string;
filename: string;
media_type: MediaType;
// 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 {
filename: string;
source_code: string;
output_code: string;
source_map: string;
}
table Chdir {

17
src/ops.rs
View file

@ -257,12 +257,12 @@ fn op_code_fetch(
source_code: Some(builder.create_string(&out.source_code)),
..Default::default()
};
match out.maybe_output_code {
Some(ref output_code) => {
msg_args.output_code = Some(builder.create_string(output_code));
}
_ => (),
};
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,
@ -287,8 +287,11 @@ fn op_code_cache(
let filename = inner.filename().unwrap();
let source_code = inner.source_code().unwrap();
let output_code = inner.output_code().unwrap();
let source_map = inner.source_map().unwrap();
Box::new(futures::future::result(|| -> OpResult {
state.dir.code_cache(filename, source_code, output_code)?;
state
.dir
.code_cache(filename, source_code, output_code, source_map)?;
Ok(empty_buf())
}()))
}