gistfile1.java

final class JavaToJavaScriptDebugAware extends JavaScriptDebugAware {
  @Nullable
  @Override
  public XLineBreakpointType<?> getBreakpointTypeClass(@NotNull Project project) {
    return XBreakpointType.EXTENSION_POINT_NAME.findExtension(JavaLineBreakpointType.class);
  }

  @Nullable
  @Override
  public MemberFilter createMemberFilter(@Nullable final NameMapper nameMapper, @NotNull PsiElement element, int end) {
    if (nameMapper != null && element.getContainingFile().getLanguage() == JavaLanguage.INSTANCE) {
      PsiMethod method = PsiTreeUtil.getParentOfType(element, PsiMethod.class, false);
      if (method != null) {
        for (PsiParameter parameter : method.getParameterList().getParameters()) {
          nameMapper.map(parameter);
        }

        PsiCodeBlock body = method.getBody();
        if (body != null) {
          body.accept(new JavaRecursiveElementVisitor() {
            @Override
            public void visitLocalVariable(PsiLocalVariable variable) {
              nameMapper.map(variable);
            }
          });
        }

        final Map<String, String> nameMappings = nameMapper.getNameMappings();
        if (nameMappings != null) {
          return new MemberFilter() {
            @Override
            public boolean isMemberVisible(@NotNull Variable variable, boolean filterFunctions) {
              return true;
            }

            @NotNull
            @Override
            public Collection<Variable> getAdditionalVariables() {
              return Collections.emptyList();
            }

            @NotNull
            @Override
            public String getName(@NotNull Variable variable) {
              String name = variable.getName();
              String sourceName = nameMappings.get(name);
              return sourceName == null ? name : sourceName;
            }

            @Override
            public boolean hasNameMappings() {
              return true;
            }
          };
        }
      }
    }
    return null;
  }

  @Nullable
  @Override
  public PsiElement getNavigationElementForSourcemapInspector(@NotNull PsiFile file) {
    if (file instanceof PsiJavaFile) {
      PsiClass[] classes = ((PsiJavaFile)file).getClasses();
      if (classes.length > 0) {
        return classes[0].getNavigationElement();
      }
    }
    return null;
  }

  @Nullable
  @Override
  protected LanguageFileType getFileType(@NotNull FileTypeRequestReason reason) {
    return reason == FileTypeRequestReason.EVALUATION_INFO ? JavaFileType.INSTANCE : null;
  }

  @Nullable
  @Override
  public ExpressionInfo getEvaluationInfo(@NotNull PsiElement elementAtOffset, @NotNull Document document, @NotNull ExpressionInfoFactory expressionInfoFactory) {
    if (elementAtOffset instanceof PsiIdentifier) {
      return new ExpressionInfo(elementAtOffset.getTextRange());
    }
    return null;
  }
}