Package org.eclipse.debug.core.model
Interface IExpression
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- All Superinterfaces:
IAdaptable,IDebugElement
- All Known Subinterfaces:
IErrorReportingExpression,IWatchExpression
public interface IExpression extends IDebugElement
An expression is a snippet of code that can be evaluated to produce a value. When and how an expression is evaluated is implementation specific. The context/binding required to evaluate an expression varies by debug model, and by user intent. Furthermore, an expression may need to be evaluated at a specific location in a program (for example, at a breakpoint/line where certain variables referenced in the expression are visible/allocated). A user may want to evaluate an expression once to produce a value that can be inspected iteratively, or they may wish to evaluate an expression iteratively producing new values each time (i.e. as in a watch list).Clients are intended to implement this interface.
- Since:
- 2.0
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description voiddispose()Notifies this expression that it has been removed from the expression manager.IDebugTargetgetDebugTarget()Returns the debug target this expression is associated with, ornullif this expression is not associated with a debug target.StringgetExpressionText()Returns this expression's snippet of code.IValuegetValue()Returns the current value of this expression ornullif this expression does not currently have a value.-
Methods inherited from interface org.eclipse.core.runtime.IAdaptable
getAdapter
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Methods inherited from interface org.eclipse.debug.core.model.IDebugElement
getLaunch, getModelIdentifier
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Method Detail
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getExpressionText
String getExpressionText()
Returns this expression's snippet of code.- Returns:
- the expression
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getValue
IValue getValue()
Returns the current value of this expression ornullif this expression does not currently have a value.- Returns:
- value or
null
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getDebugTarget
IDebugTarget getDebugTarget()
Returns the debug target this expression is associated with, ornullif this expression is not associated with a debug target.- Specified by:
getDebugTargetin interfaceIDebugElement- Returns:
- debug target or
null - See Also:
IDebugElement.getDebugTarget()
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dispose
void dispose()
Notifies this expression that it has been removed from the expression manager. Any required clean up is be performed such that this expression can be garbage collected.
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