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Prevent JS source map builder from inserting overlapping mappings

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Check if newly inserted mapping is in the same position within
JS line and in this case omit the mapping
This commit is contained in:
Alexey Andreev
2017-05-23 12:18:33 +03:00
parent 174068c462
commit ca738a9536
1 changed files with 9 additions and 4 deletions
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js/js.translator/src/org/jetbrains/kotlin/js/sourceMap/SourceMap3Builder.java
+9 -4
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@@ -127,14 +127,19 @@ public class SourceMap3Builder implements SourceMapBuilder {
@Override @Override
public void addMapping(String source, int sourceLine, int sourceColumn) { public void addMapping(String source, int sourceLine, int sourceColumn) {
if (previousGeneratedColumn == -1) { boolean newGroupStarted = previousGeneratedColumn == -1;
if (newGroupStarted) {
previousGeneratedColumn = 0; previousGeneratedColumn = 0;
} }
else {
out.append(',');
}
int columnDiff = textOutput.getColumn() - previousGeneratedColumn; int columnDiff = textOutput.getColumn() - previousGeneratedColumn;
if (!newGroupStarted && columnDiff == 0) {
return;
}
if (!newGroupStarted) {
out.append(',');
}
// TODO fix sections overlapping // TODO fix sections overlapping
// assert columnDiff != 0; // assert columnDiff != 0;
Base64VLQ.encode(out, columnDiff); Base64VLQ.encode(out, columnDiff);