edu.umd.cs.findbugs.ba.bcp

Class ByteCodePattern

public class ByteCodePattern extends Object

A ByteCodePattern is a pattern matching a sequence of bytecode instructions.

Author: David Hovemeyer

See Also: PatternElement PatternMatcher

Method Summary
ByteCodePatternadd(PatternElement element)
Add a PatternElement to the end of the pattern.
ByteCodePatternaddWild(int numWild)
Add a wildcard to match between 0 and given number of instructions.
StringdummyVariable()
Get a dummy variable name.
PatternElementgetFirst()
Get the first PatternElement in the pattern.
ByteCodePatternsetInterElementWild(int numWild)
Set number of inter-element wildcards to create between explicit PatternElements.

Method Detail

add

public ByteCodePattern add(PatternElement element)
Add a PatternElement to the end of the pattern.

Parameters: element the PatternElement

Returns: this object

addWild

public ByteCodePattern addWild(int numWild)
Add a wildcard to match between 0 and given number of instructions. If there is already a wildcard at the end of the current pattern, resets its max value to that given.

Parameters: numWild maximum number of instructions to be matched by the wildcard

dummyVariable

public String dummyVariable()
Get a dummy variable name. The name returned will begin with the '$' character, and will be different than any previous dummy variable name allocated by this object. Dummy variable names are useful for creating PatternElements where you don't care whether the value it uses is the same as one used by another PatternElement.

getFirst

public PatternElement getFirst()
Get the first PatternElement in the pattern.

setInterElementWild

public ByteCodePattern setInterElementWild(int numWild)
Set number of inter-element wildcards to create between explicit PatternElements. By default, no implicit wildcards are created.

Parameters: numWild the number of wildcard instructions which may be matched between explicit PatternElements

Returns: this object

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