How to use

ASTEvaluationEngine

in

org.eclipse.jdt.internal.debug.eval.ast.engine

public String getSnippet(String snippet) throws CoreException {
  IJavaValue value = resolveValue();
  if (value instanceof IJavaArray) {
    return ASTEvaluationEngine.replaceThisReferences(snippet);
  }
  return super.getSnippet(snippet);
}

ASTEvaluationEngine engine = new ASTEvaluationEngine(project, debugTarget);
boolean newExpression = false;
if (breakpoint != null) {
    if (compiledExpression == null) {
      newExpression = true;
      compiledExpression = engine.getCompiledExpression(expression, stackframe);
      breakpoint.setCompiledLogpointExpression(compiledExpression);
    if (compiledExpression == null) {
      newExpression = true;
      compiledExpression = engine.getCompiledExpression(expression, stackframe);
      breakpoint.setCompiledConditionalExpression(compiledExpression);
  compiledExpression = engine.getCompiledExpression(expression, stackframe);

private void internalEvaluate(ASTEvaluationEngine engine, ICompiledExpression compiledExpression,
    IJavaStackFrame stackframe, CompletableFuture<Value> completableFuture) {
  try  {
    engine.evaluateExpression(compiledExpression, stackframe, evaluateResult -> {
      if (evaluateResult == null || evaluateResult.hasErrors()) {
        Exception ex = evaluateResult.getException() != null ? evaluateResult.getException()
            : new RuntimeException(StringUtils.join(evaluateResult.getErrorMessages()));
        completableFuture.completeExceptionally(ex);
        return;
      }
      try {
        // we need to read fValue from the result Value instance implements by JDT
        Value value = (Value) FieldUtils.readField(evaluateResult.getValue(), "fValue", true);
        completableFuture.complete(value);
      } catch (IllegalArgumentException | IllegalAccessException ex) {
        completableFuture.completeExceptionally(ex);
      }
    }, 0, false);
  } catch (Exception ex) {
    completableFuture.completeExceptionally(ex);
  }
}