[JS] Rename JsLocation.identityObject to fileIdentity

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/jsAstUtils.kt

@@ -516,7 +516,7 @@ private inline fun <T : JsNode> T.addSourceInfoIfNeed(node: IrElement, context:
 
 private fun JsLocation.withEmbeddedSource(
     context: JsGenerationContext
-) = JsLocationWithEmbeddedSource(this, identityObject = context.currentFile) {
+) = JsLocationWithEmbeddedSource(this, fileIdentity = context.currentFile) {
     try {
         InputStreamReader(FileInputStream(file), StandardCharsets.UTF_8)
     } catch (e: IOException) {

js/js.ast/src/org/jetbrains/kotlin/js/backend/ast/JsLocation.kt

@@ -23,7 +23,7 @@ data class JsLocation(
     override val startLine: Int,
     override val startChar: Int
 ) : JsLocationWithSource {
-    override val identityObject: Any?
+    override val fileIdentity: Any?
         get() = null
     override val sourceProvider: () -> Reader?
         get() = { null }
@@ -35,7 +35,11 @@ interface JsLocationWithSource {
     val file: String
     val startLine: Int
     val startChar: Int
-    val identityObject: Any?
+
+    /**
+     * An object to distinguish different files with the same paths
+     */
+    val fileIdentity: Any?
     val sourceProvider: () -> Reader?
 
     fun asSimpleLocation(): JsLocation
@@ -43,6 +47,6 @@ interface JsLocationWithSource {
 
 class JsLocationWithEmbeddedSource(
     private val location: JsLocation,
-    override val identityObject: Any?,
+    override val fileIdentity: Any?,
     override val sourceProvider: () -> Reader?
 ) : JsLocationWithSource by location

js/js.sourcemap/src/org/jetbrains/kotlin/js/sourceMap/SourceMap3Builder.java

@@ -122,11 +122,11 @@ public class SourceMap3Builder implements SourceMapBuilder {
 
     @Override
     public void addMapping(
-            @NotNull String source, @Nullable Object identityObject, @NotNull Supplier<Reader> sourceContent,
+            @NotNull String source, @Nullable Object sourceFileIdentity, @NotNull Supplier<Reader> sourceContent,
             int sourceLine, int sourceColumn
     ) {
         source = source.replace(File.separatorChar, '/');
-        int sourceIndex = getSourceIndex(source, identityObject, sourceContent);
+        int sourceIndex = getSourceIndex(source, sourceFileIdentity, sourceContent);
 
         if (!currentMappingIsEmpty && previousSourceIndex == sourceIndex && previousSourceLine == sourceLine &&
             previousSourceColumn == sourceColumn) {

js/js.sourcemap/src/org/jetbrains/kotlin/js/sourceMap/SourceMapBuilderConsumer.kt

@@ -81,7 +81,7 @@ class SourceMapBuilderConsumer(
                 }
                 mappingConsumer.addMapping(
                     path,
-                    sourceInfo.identityObject,
+                    sourceInfo.fileIdentity,
                     contentSupplier,
                     sourceInfo.startLine,
                     sourceInfo.startChar

js/js.sourcemap/src/org/jetbrains/kotlin/js/sourceMap/SourceMapMappingConsumer.java

@@ -15,7 +15,7 @@ public interface SourceMapMappingConsumer {
     void newLine();
 
     void addMapping(
-            @NotNull String source, @Nullable Object sourceIdentity, @NotNull Supplier<Reader> sourceSupplier,
+            @NotNull String source, @Nullable Object fileIdentity, @NotNull Supplier<Reader> sourceSupplier,
             int sourceLine, int sourceColumn
     );