Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 


Eclipse JDT
Release 3.5

org.eclipse.jdt.debug.eval
Interface IAstEvaluationEngine

All Superinterfaces:
IEvaluationEngine

public interface IAstEvaluationEngine
extends IEvaluationEngine

An evaluation engine that performs evaluations by interpreting abstract syntax trees. An AST evaluation engine is capable of creating compiled expressions that can be evaluated multiple times in a given runtime context.

Since:
2.0
Restriction:
This interface is not intended to be implemented by clients.
Restriction:
This interface is not intended to be extended by clients.

Method Summary
 void evaluateExpression ( ICompiledExpression expression, IJavaObject object, IJavaThread thread, IEvaluationListener listener, int evaluationDetail, boolean hitBreakpoints)
          Asynchronously evaluates the given expression in the context of the specified type, reporting the result back to the given listener.
 void evaluateExpression ( ICompiledExpression expression, IJavaStackFrame frame, IEvaluationListener listener, int evaluationDetail, boolean hitBreakpoints)
          Asynchronously evaluates the given expression in the context of the specified stack frame, reporting the result back to the given listener.
  ICompiledExpression getCompiledExpression ( String expression, IJavaObject object)
          Synchronously generates a compiled expression from the given expression in the context of the specified object.
  ICompiledExpression getCompiledExpression ( String expression, IJavaReferenceType type)
          Synchronously generates a compiled expression from the given expression in the context of the specified type.
  ICompiledExpression getCompiledExpression ( String expression, IJavaStackFrame frame)
          Synchronously generates a compiled expression from the given expression in the context of the specified stack frame.
 
Methods inherited from interface org.eclipse.jdt.debug.eval. IEvaluationEngine
dispose, evaluate, evaluate, getDebugTarget, getJavaProject
 

Method Detail

evaluateExpression

void evaluateExpression(
ICompiledExpression expression,
                        
IJavaStackFrame frame,
                        
IEvaluationListener listener,
                        int evaluationDetail,
                        boolean hitBreakpoints)
                        throws 
DebugException
Asynchronously evaluates the given expression in the context of the specified stack frame, reporting the result back to the given listener. The thread is resumed from the location at which it is currently suspended to perform the evaluation. When the evaluation completes, the thread will be suspended at this original location. The thread runs the evaluation with the given evaluation detail (@see IJavaThread#runEvaluation(IEvaluationRunnable, IProgressMonitor, int)). Compilation and runtime errors are reported in the evaluation result.

Parameters:
expression - expression to evaluate
frame - the stack frame context in which to run the evaluation.
listener - the listener that will receive notification when/if the evaluation completes
evaluationDetail - one of DebugEvent.EVALUATION or DebugEvent.EVALUATION_IMPLICIT
hitBreakpoints - whether or not breakpoints should be honored in the evaluation thread during the evaluation. If false, breakpoints hit in the evaluation thread will be ignored.
Throws:
DebugException - if this method fails. Reasons include:
  • Failure communicating with the VM. The DebugException's status code contains the underlying exception responsible for the failure.
  • The associated thread is not currently suspended
  • The stack frame is not contained in the debug target associated with this evaluation engine
  • The associated thread is suspended in the middle of an evaluation that has not completed. It is not possible to perform nested evaluations

evaluateExpression

void evaluateExpression(
ICompiledExpression expression,
                        
IJavaObject object,
                        
IJavaThread thread,
                        
IEvaluationListener listener,
                        int evaluationDetail,
                        boolean hitBreakpoints)
                        throws 
DebugException
Asynchronously evaluates the given expression in the context of the specified type, reporting the result back to the given listener. The expression is evaluated in the context of the Java project this evaluation engine was created on. If the expression is determined to have no errors, the expression is evaluated in the thread associated with the given stack frame. When the evaluation completes, the thread will be suspended at this original location. The thread runs the evaluation with the given evaluation detail (@see IJavaThread#runEvaluation(IEvaluationRunnable, IProgressMonitor, int)). Compilation and runtime errors are reported in the evaluation result.

Parameters:
expression - the expression to evaluate
object - the 'this' context for the evaluation
thread - the thread in which to run the evaluation, which must be suspended
listener - the listener that will receive notification when/if the evaluation completes
evaluationDetail - one of DebugEvent.EVALUATION or DebugEvent.EVALUATION_IMPLICIT
hitBreakpoints - whether or not breakpoints should be honored in the evaluation thread during the evaluation. If false, breakpoints hit in the evaluation thread will be ignored.
Throws:
DebugException - if this method fails. Reasons include:
  • Failure communicating with the VM. The DebugException's status code contains the underlying exception responsible for the failure.
  • The associated thread is not currently suspended
  • The stack frame is not contained in the debug target associated with this evaluation engine
  • The associated thread is suspended in the middle of an evaluation that has not completed. It is not possible to perform nested evaluations

getCompiledExpression

ICompiledExpression getCompiledExpression(
String expression,
                                          
IJavaStackFrame frame)
                                          throws 
DebugException
Synchronously generates a compiled expression from the given expression in the context of the specified stack frame. The generated expression can be stored and evaluated later in a valid runtime context. Compilation errors are reported in the returned compiled expression.

Parameters:
expression - expression to compile
frame - the context in which to compile the expression
Throws:
DebugException - if this method fails. Reasons include:
  • Failure communicating with the VM. The DebugException's status code contains the underlying exception responsible for the failure.
  • The associated thread is not currently suspended
  • The stack frame is not contained in the debug target associated with this evaluation engine

getCompiledExpression

ICompiledExpression getCompiledExpression(
String expression,
                                          
IJavaObject object)
                                          throws 
DebugException
Synchronously generates a compiled expression from the given expression in the context of the specified object. The generated expression can be stored and evaluated later in a valid runtime context. Compilation errors are reported in the returned compiled expression.

Parameters:
expression - expression to compile
object - the context in which to compile the expression
Throws:
DebugException - if this method fails. Reasons include:
  • Failure communicating with the VM. The DebugException's status code contains the underlying exception responsible for the failure.
  • The associated thread is not currently suspended
  • The stack frame is not contained in the debug target associated with this evaluation engine

getCompiledExpression

ICompiledExpression getCompiledExpression(
String expression,
                                          
IJavaReferenceType type)
                                          throws 
DebugException
Synchronously generates a compiled expression from the given expression in the context of the specified type. The generated expression can be stored and evaluated later in a valid runtime context. Compilation errors are reported in the returned compiled expression.

Parameters:
expression - expression to compile
type - the context in which to compile the expression
Throws:
DebugException - if this method fails. Reasons include:
  • Failure communicating with the VM. The DebugException's status code contains the underlying exception responsible for the failure.
  • The associated thread is not currently suspended
  • The stack frame is not contained in the debug target associated with this evaluation engine
Since:
3.1

Eclipse JDT
Release 3.5

Copyright (c) IBM Corp. and others 2000, 2008. All Rights Reserved.

 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire