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Inline function to tidy up control flow

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This commit is contained in:
Andrew Casey 2019-10-16 11:31:44 -07:00
parent 4ed80b62df
commit b6659e5d6e
1 changed files with 36 additions and 43 deletions
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79
src/compiler/program.ts
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@ -96,7 +96,7 @@ namespace ts {
if (existingDirectories.has(directoryPath)) {
return true;
}
if (system.directoryExists(directoryPath)) {
if ((compilerHost.directoryExists || system.directoryExists)(directoryPath)) {
existingDirectories.set(directoryPath, true);
return true;
}
@ -107,47 +107,10 @@ namespace ts {
if (directoryPath.length > getRootLength(directoryPath) && !directoryExists(directoryPath)) {
const parentDirectory = getDirectoryPath(directoryPath);
ensureDirectoriesExist(parentDirectory);
if (compilerHost.createDirectory) {
compilerHost.createDirectory(directoryPath);
}
else {
system.createDirectory(directoryPath);
}
(compilerHost.createDirectory || system.createDirectory)(directoryPath);
}
}
let outputFingerprints: Map<OutputFingerprint>;
function writeFileIfUpdated(fileName: string, data: string, writeByteOrderMark: boolean): void {
if (!outputFingerprints) {
outputFingerprints = createMap<OutputFingerprint>();
}
const hash = system.createHash!(data); // TODO: GH#18217
const mtimeBefore = system.getModifiedTime!(fileName); // TODO: GH#18217
if (mtimeBefore) {
const fingerprint = outputFingerprints.get(fileName);
// If output has not been changed, and the file has no external modification
if (fingerprint &&
fingerprint.byteOrderMark === writeByteOrderMark &&
fingerprint.hash === hash &&
fingerprint.mtime.getTime() === mtimeBefore.getTime()) {
return;
}
}
system.writeFile(fileName, data, writeByteOrderMark);
const mtimeAfter = system.getModifiedTime!(fileName) || missingFileModifiedTime; // TODO: GH#18217
outputFingerprints.set(fileName, {
hash,
byteOrderMark: writeByteOrderMark,
mtime: mtimeAfter
});
}
function writeFile(fileName: string, data: string, writeByteOrderMark: boolean, onError?: (message: string) => void) {
try {
performance.mark("beforeIOWrite");
@ -155,6 +118,9 @@ namespace ts {
// PERF: Checking for directory existence is expensive.
// Instead, assume the directory exists and fall back
// to creating it if the file write fails.
// NOTE: If patchWriteFileEnsuringDirectory has been called,
// the file write will do its own directory creation and
// the ensureDirectoriesExist call will always be redundant.
try {
writeFileWorker(fileName, data, writeByteOrderMark);
}
@ -173,13 +139,40 @@ namespace ts {
}
}
let outputFingerprints: Map<OutputFingerprint>;
function writeFileWorker(fileName: string, data: string, writeByteOrderMark: boolean) {
if (isWatchSet(options) && system.createHash && system.getModifiedTime) {
writeFileIfUpdated(fileName, data, writeByteOrderMark);
}
else {
if (!isWatchSet(options) || !system.createHash || !system.getModifiedTime) {
system.writeFile(fileName, data, writeByteOrderMark);
return;
}
if (!outputFingerprints) {
outputFingerprints = createMap<OutputFingerprint>();
}
const hash = system.createHash(data);
const mtimeBefore = system.getModifiedTime(fileName);
if (mtimeBefore) {
const fingerprint = outputFingerprints.get(fileName);
// If output has not been changed, and the file has no external modification
if (fingerprint &&
fingerprint.byteOrderMark === writeByteOrderMark &&
fingerprint.hash === hash &&
fingerprint.mtime.getTime() === mtimeBefore.getTime()) {
return;
}
}
system.writeFile(fileName, data, writeByteOrderMark);
const mtimeAfter = system.getModifiedTime(fileName) || missingFileModifiedTime;
outputFingerprints.set(fileName, {
hash,
byteOrderMark: writeByteOrderMark,
mtime: mtimeAfter
});
}
function getDefaultLibLocation(): string {