GWT: don't start (slow and non-incremental) GWT compilation for whole module if 'compile file' action is invoked (ZD-75490)

jps/jps-builders/src/org/jetbrains/jps/incremental/CompileScope.java

@@ -28,8 +28,16 @@ import java.io.File;
 public abstract class CompileScope {
   public abstract boolean isAffected(BuildTarget<?> target, @NotNull File file);
 
+  /**
+   * @return {@code true} if at least one file from {@code target} is included into the scope
+   */
   public abstract boolean isAffected(@NotNull BuildTarget<?> target);
 
+  /**
+   * @return {@code true} if all files from {@code target} are included into the scope
+   */
+  public abstract boolean isWholeTargetAffected(@NotNull BuildTarget<?> target);
+
   public abstract boolean isBuildForced(@NotNull BuildTarget<?> target);
 
   public abstract boolean isBuildForcedForAllTargets(@NotNull BuildTargetType<?> targetType);

jps/jps-builders/src/org/jetbrains/jps/incremental/CompileScopeImpl.java

@@ -62,13 +62,17 @@ public class CompileScopeImpl extends CompileScope {
 
   @Override
   public boolean isAffected(@NotNull BuildTarget<?> target) {
-    return myTypes.contains(target.getTargetType()) || myTargets.contains(target) || myFiles.containsKey(target) || isAffectedByAssociatedModule(target);
+    return isWholeTargetAffected(target) || myFiles.containsKey(target);
+  }
+
+  @Override
+  public boolean isWholeTargetAffected(@NotNull BuildTarget<?> target) {
+    return myTypes.contains(target.getTargetType()) || myTargets.contains(target) || isAffectedByAssociatedModule(target);
   }
 
   @Override
   public boolean isBuildForced(@NotNull BuildTarget<?> target) {
-    BuildTargetType<?> type = target.getTargetType();
-    return myTypesToForceBuild.contains(type) && myFiles.isEmpty() && (myTypes.contains(type) || myTargets.contains(target) || isAffectedByAssociatedModule(target));
+    return myTypesToForceBuild.contains(target.getTargetType()) && myFiles.isEmpty() && isWholeTargetAffected(target);
   }
 
   @Override

jps/jps-builders/testSrc/org/jetbrains/jps/builders/CompileScopeTestBuilder.java

@@ -35,6 +35,7 @@ public class CompileScopeTestBuilder {
   private final boolean myForceBuild;
   private final Set<BuildTargetType<?>> myTargetTypes = new HashSet<BuildTargetType<?>>();
   private final Set<BuildTarget<?>> myTargets = new HashSet<BuildTarget<?>>();
+  private LinkedHashMap<BuildTarget<?>, Set<File>> myFiles = new LinkedHashMap<BuildTarget<?>, Set<File>>();
 
   public static CompileScopeTestBuilder rebuild() {
     return new CompileScopeTestBuilder(true);
@@ -78,9 +79,19 @@ public class CompileScopeTestBuilder {
     return this;
   }
 
+  public CompileScopeTestBuilder file(BuildTarget<?> target, String path) {
+    Set<File> files = myFiles.get(target);
+    if (files == null) {
+      files = new LinkedHashSet<File>();
+      myFiles.put(target, files);
+    }
+    files.add(new File(path));
+    return this;
+  }
+
   public CompileScope build() {
     Collection<BuildTargetType<?>> typesToForceBuild = myForceBuild ? myTargetTypes : Collections.<BuildTargetType<?>>emptyList();
-    return new CompileScopeImpl(myTargetTypes, typesToForceBuild, myTargets, Collections.<BuildTarget<?>,Set<File>>emptyMap());
+    return new CompileScopeImpl(myTargetTypes, typesToForceBuild, myTargets, myFiles);
   }
 
   public CompileScopeTestBuilder all() {