Package edu.umd.cs.findbugs.ba.bcp
Class Invoke
java.lang.Object
edu.umd.cs.findbugs.ba.bcp.PatternElement
edu.umd.cs.findbugs.ba.bcp.Invoke
A PatternElement to match a method invocation. Currently, we don't allow
variables in this element (for arguments and return value). This would be a
good thing to add. We also don't distinguish between invokevirtual,
invokeinterface, and invokespecial.
Invoke objects match by class name, method name, method signature, and mode.
Names and signatures may be matched in several ways:
- By an exact match. This is the default behavior.
- By a regular expression. If the string provided to the Invoke constructor begins with a "/" character, the rest of the string is treated as a regular expression.
- As a subclass match. This only applies to class name matches. If the first character of a class name string is "+", then the rest of the string is treated as the name of a base class. Any subclass or subinterface of the named type will be accepted.
The mode specifies what kind of invocations in the Invoke element matches. It is specified as the bitwise combination of the following values:
-
INSTANCE
, which matches ordinary instance method invocations -
STATIC
, which matches static method invocations -
CONSTRUCTOR
, which matches object constructor invocations
ORDINARY_METHOD
is equivalent to
INSTANCE|STATIC
. The special mode ANY
is equivalent
to INSTANCE|STATIC|CONSTRUCTOR
.- Author:
- David Hovemeyer
- See Also:
-
Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
Match both static and instance invocations.static final int
Match object constructor invocations.static final int
Match ordinary (non-constructor) instance invocations.static final int
Match ordinary methods (everything except constructors).static final int
Match static invocations. -
Constructor Summary
ConstructorsConstructorDescriptionInvoke
(String className, String methodName, String methodSig, int mode, RepositoryLookupFailureCallback lookupFailureCallback) Constructor. -
Method Summary
Modifier and TypeMethodDescriptionboolean
acceptBranch
(Edge edge, org.apache.bcel.generic.InstructionHandle source) Return whether or not it is acceptable to take the given branch.match
(org.apache.bcel.generic.InstructionHandle handle, org.apache.bcel.generic.ConstantPoolGen cpg, ValueNumberFrame before, ValueNumberFrame after, BindingSet bindingSet) Return whether or not this element matches the given instruction with the given Bindings in effect.int
maxOccur()
Return the maximum number of instructions this PatternElement must match in the ByteCodePattern.int
minOccur()
Return the minimum number of instructions this PatternElement must match in the ByteCodePattern.Methods inherited from class edu.umd.cs.findbugs.ba.bcp.PatternElement
addOrCheckDefinition, allowTrailingEdges, dominatedBy, getDominatedBy, getLabel, getNext, label, lookup, setAllowTrailingEdges, setIndex, setNext, toString
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Field Details
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INSTANCE
public static final int INSTANCEMatch ordinary (non-constructor) instance invocations.- See Also:
-
STATIC
public static final int STATICMatch static invocations.- See Also:
-
CONSTRUCTOR
public static final int CONSTRUCTORMatch object constructor invocations.- See Also:
-
ORDINARY_METHOD
public static final int ORDINARY_METHODMatch ordinary methods (everything except constructors).- See Also:
-
ANY
public static final int ANYMatch both static and instance invocations.- See Also:
-
-
Constructor Details
-
Invoke
public Invoke(String className, String methodName, String methodSig, int mode, @Nullable RepositoryLookupFailureCallback lookupFailureCallback) Constructor.- Parameters:
className
- the class name of the method; may be specified exactly, as a regexp, or as a subtype matchmethodName
- the name of the method; may be specified exactly or as a regexpmethodSig
- the signature of the method; may be specified exactly or as a regexpmode
- the mode of invocation
-
-
Method Details
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match
public MatchResult match(org.apache.bcel.generic.InstructionHandle handle, org.apache.bcel.generic.ConstantPoolGen cpg, ValueNumberFrame before, ValueNumberFrame after, BindingSet bindingSet) throws DataflowAnalysisException Description copied from class:PatternElement
Return whether or not this element matches the given instruction with the given Bindings in effect.- Specified by:
match
in classPatternElement
- Parameters:
handle
- the instructioncpg
- the ConstantPoolGen from the methodbefore
- the ValueNumberFrame representing values in the Java stack frame just before the execution of the instructionafter
- the ValueNumberFrame representing values in the Java stack frame just after the execution of the instructionbindingSet
- the set of Bindings- Returns:
- if the match is successful, returns a MatchResult with the PatternElement and BindingSet; if the match is not successful, returns null
- Throws:
DataflowAnalysisException
-
acceptBranch
Description copied from class:PatternElement
Return whether or not it is acceptable to take the given branch.- Specified by:
acceptBranch
in classPatternElement
- Parameters:
edge
- the Edge representing the branchsource
- the source instruction of the branch- Returns:
- true if the Edge is acceptable, false if not
-
minOccur
public int minOccur()Description copied from class:PatternElement
Return the minimum number of instructions this PatternElement must match in the ByteCodePattern.- Specified by:
minOccur
in classPatternElement
-
maxOccur
public int maxOccur()Description copied from class:PatternElement
Return the maximum number of instructions this PatternElement must match in the ByteCodePattern.- Specified by:
maxOccur
in classPatternElement
-