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Emit first encounter shebang at the top of a output file

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This commit is contained in:
Kanchalai Tanglertsampan
2017-02-23 15:27:22 -08:00
parent eca4af5029
commit 231c3cb8ab
3 changed files with 24 additions and 9 deletions
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src/compiler/emitter.ts
+22 -6
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@@ -274,6 +274,7 @@ namespace ts {
function writeBundle(bundle: Bundle, output: EmitTextWriter) {
const previousWriter = writer;
setWriter(output);
emitShebangIfNeeded(bundle);
emitHelpersIndirect(bundle);
for (const sourceFile of bundle.sourceFiles) {
print(EmitHint.SourceFile, sourceFile, sourceFile);
@@ -285,6 +286,7 @@ namespace ts {
function writeFile(sourceFile: SourceFile, output: EmitTextWriter) {
const previousWriter = writer;
setWriter(output);
emitShebangIfNeeded(sourceFile);
print(EmitHint.SourceFile, sourceFile, sourceFile);
reset();
writer = previousWriter;
@@ -2051,7 +2053,6 @@ namespace ts {
function emitSourceFile(node: SourceFile) {
writeLine();
emitShebang();
emitBodyIndirect(node, node.statements, emitSourceFileWorker);
}
@@ -2095,11 +2096,26 @@ namespace ts {
// Helpers
//
function emitShebang() {
const shebang = getShebang(currentSourceFile.text);
if (shebang) {
write(shebang);
writeLine();
function emitShebangIfNeeded(sourceFileOrBundle: Bundle | SourceFile) {
if (sourceFileOrBundle.kind === SyntaxKind.SourceFile) {
emitShebangInSourceFile(sourceFileOrBundle as SourceFile);
}
else {
for (const sourceFile of (sourceFileOrBundle as Bundle).sourceFiles) {
// Emit only the first Shebang with encounter
if (emitShebangInSourceFile(sourceFile)) {
break;
}
}
}
function emitShebangInSourceFile(sourceFile: SourceFile): boolean {
const shebang = getShebang(sourceFile.text);
if (shebang) {
write(shebang);
writeLine();
return true;
}
}
}