Package org.jacoco.core.instr
Class Instrumenter
- java.lang.Object
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- org.jacoco.core.instr.Instrumenter
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public class Instrumenter extends java.lang.Object
Several APIs to instrument Java class definitions for coverage tracing.
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Constructor Summary
Constructors Constructor Description Instrumenter(IExecutionDataAccessorGenerator runtime)
Creates a new instance based on the given runtime.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description byte[]
instrument(byte[] buffer, java.lang.String name)
Creates a instrumented version of the given class if possible.void
instrument(java.io.InputStream input, java.io.OutputStream output, java.lang.String name)
Creates a instrumented version of the given class file.byte[]
instrument(java.io.InputStream input, java.lang.String name)
Creates a instrumented version of the given class if possible.byte[]
instrument(org.objectweb.asm.ClassReader reader)
Creates a instrumented version of the given class if possible.int
instrumentAll(java.io.InputStream input, java.io.OutputStream output, java.lang.String name)
Creates a instrumented version of the given resource depending on its type.void
setRemoveSignatures(boolean flag)
Determines whether signatures should be removed from JAR files.
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Constructor Detail
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Instrumenter
public Instrumenter(IExecutionDataAccessorGenerator runtime)
Creates a new instance based on the given runtime.- Parameters:
runtime
- runtime used by the instrumented classes
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Method Detail
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setRemoveSignatures
public void setRemoveSignatures(boolean flag)
Determines whether signatures should be removed from JAR files. This is typically necessary as instrumentation modifies the class files and therefore invalidates existing JAR signatures. Default istrue
.- Parameters:
flag
-true
if signatures should be removed
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instrument
public byte[] instrument(org.objectweb.asm.ClassReader reader)
Creates a instrumented version of the given class if possible.- Parameters:
reader
- definition of the class as ASM reader- Returns:
- instrumented definition
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instrument
public byte[] instrument(byte[] buffer, java.lang.String name) throws java.io.IOException
Creates a instrumented version of the given class if possible.- Parameters:
buffer
- definition of the classname
- a name used for exception messages- Returns:
- instrumented definition
- Throws:
java.io.IOException
- if the class can't be instrumented
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instrument
public byte[] instrument(java.io.InputStream input, java.lang.String name) throws java.io.IOException
Creates a instrumented version of the given class if possible. The providedInputStream
is not closed by this method.- Parameters:
input
- stream to read class definition fromname
- a name used for exception messages- Returns:
- instrumented definition
- Throws:
java.io.IOException
- if reading data from the stream fails or the class can't be instrumented
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instrument
public void instrument(java.io.InputStream input, java.io.OutputStream output, java.lang.String name) throws java.io.IOException
Creates a instrumented version of the given class file. The providedInputStream
andOutputStream
instances are not closed by this method.- Parameters:
input
- stream to read class definition fromoutput
- stream to write the instrumented version of the class toname
- a name used for exception messages- Throws:
java.io.IOException
- if reading data from the stream fails or the class can't be instrumented
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instrumentAll
public int instrumentAll(java.io.InputStream input, java.io.OutputStream output, java.lang.String name) throws java.io.IOException
Creates a instrumented version of the given resource depending on its type. Class files and the content of archive files are instrumented. All other files are copied without modification. The providedInputStream
andOutputStream
instances are not closed by this method.- Parameters:
input
- stream to contents fromoutput
- stream to write the instrumented version of the contentsname
- a name used for exception messages- Returns:
- number of instrumented classes
- Throws:
java.io.IOException
- if reading data from the stream fails or a class can't be instrumented
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