soot.coffi

Class ClassFile

java.lang.Object

soot.coffi.ClassFile

public class ClassFile
extends Object

A ClassFile object represents the contents of a .class file.

A ClassFile contains code for manipulation of its constituents.

Author:

Clark Verbrugge

Field Summary

Fields

Modifier and Type	Field and Description
int	access_flags Access flags for this Class.
soot.coffi.attribute_info[]	attributes Array of attribute_info objects for this class.
int	attributes_count Count of attributes this class contains.
soot.coffi.BootstrapMethods_attribute	bootstrap_methods_attribute bootstrap-methods attribute (if any)
soot.coffi.cp_info[]	constant_pool Array of constant pool items.
int	constant_pool_count Number of items in the constant pool.
field_info[]	fields Array of field_info objects describing each field.
int	fields_count Count of fields this Class contains.
int[]	interfaces Array of constant pool indices of Class constants describing each interace implemented by this class, as given in the source for this class.
int	interfaces_count Count of interfaces implemented.
method_info[]	methods Array of method_info objects describing each field.
int	methods_count Count of methods this Class contains.
int	super_class Constant pool index of the Class constant describing super.
int	this_class Constant pool index of the Class constant describing this.

Constructor Summary

Constructors

Constructor and Description
ClassFile(String nfn) Creates a new ClassFile object given the name of the file.

Method Summary

Modifier and Type	Method and Description
boolean	loadClassFile(InputStream is)
void	parse() For every method, this calls parseMethod, storing the list of Instructions in the method_info object, and also constructs the corresponding CFG.
soot.coffi.Instruction	parseMethod(method_info m) Parses the given method, converting its bytecode array into a list of Instruction objects.
protected boolean	readAttributes(DataInputStream d, int attributes_count, soot.coffi.attribute_info[] ai) Reads in the given number of attributes from the given stream.
boolean	readClass(DataInputStream d) Builds the internal representation of this Class by reading in the given class file.
protected boolean	readConstantPool(DataInputStream d) Reads in the constant pool from the given stream.
protected boolean	readFields(DataInputStream d) Reads in the fields from the given stream.
protected boolean	readMethods(DataInputStream d) Reads in the methods from the given stream.
String	toString() Returns the name of this Class.
protected boolean	writeAttributes(DataOutputStream dd, int attributes_count, soot.coffi.attribute_info[] ai) Writes the given array of attributes to the given stream.
protected boolean	writeConstantPool(DataOutputStream dd) Writes the current constant pool to the given stream.
protected boolean	writeFields(DataOutputStream dd) Writes the fields to the given stream.
protected boolean	writeMethods(DataOutputStream dd) Writes the methods to the given stream.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

constant_pool_count

public int constant_pool_count

Number of items in the constant pool.

constant_pool

public soot.coffi.cp_info[] constant_pool

Array of constant pool items.

See Also:

cp_info

access_flags

public int access_flags

Access flags for this Class.

this_class

public int this_class

Constant pool index of the Class constant describing this.

See Also:

CONSTANT_Class_info

super_class

public int super_class

Constant pool index of the Class constant describing super.

See Also:

CONSTANT_Class_info

interfaces_count

public int interfaces_count

Count of interfaces implemented.

interfaces

public int[] interfaces

Array of constant pool indices of Class constants describing each interace implemented by this class, as given in the source for this class.

See Also:

CONSTANT_Class_info

fields_count

public int fields_count

Count of fields this Class contains.

fields

public field_info[] fields

Array of field_info objects describing each field.

See Also:

field_info

methods_count

public int methods_count

Count of methods this Class contains.

methods

public method_info[] methods

Array of method_info objects describing each field.

See Also:

method_info

attributes_count

public int attributes_count

Count of attributes this class contains.

attributes

public soot.coffi.attribute_info[] attributes

Array of attribute_info objects for this class.

See Also:

attribute_info

bootstrap_methods_attribute

public soot.coffi.BootstrapMethods_attribute bootstrap_methods_attribute

bootstrap-methods attribute (if any)

Constructor Detail

ClassFile

public ClassFile(String nfn)

Creates a new ClassFile object given the name of the file.

Parameters:

nfn - file name which this ClassFile will represent.

Method Detail

toString

public String toString()

Returns the name of this Class.

Overrides:

toString in class Object

loadClassFile

public boolean loadClassFile(InputStream is)

readClass

public boolean readClass(DataInputStream d)

Builds the internal representation of this Class by reading in the given class file.

Parameters:

d - Stream forming the .class file.

Returns:

true if read was successful, false on some error.

readConstantPool

protected boolean readConstantPool(DataInputStream d)
                            throws IOException

Reads in the constant pool from the given stream.

Parameters:

d - Stream forming the .class file.

Returns:

true if read was successful, false on some error.

Throws:

IOException - on error.

readAttributes

protected boolean readAttributes(DataInputStream d,
                                 int attributes_count,
                                 soot.coffi.attribute_info[] ai)
                          throws IOException

Reads in the given number of attributes from the given stream.

Parameters:

d - Stream forming the .class file.

attributes_count - number of attributes to read in.

ai - pre-allocated array of attributes to be filled in.

Returns:

true if read was successful, false on some error.

Throws:

IOException - on error.

readFields

protected boolean readFields(DataInputStream d)
                      throws IOException

Reads in the fields from the given stream.

Parameters:

d - Stream forming the .class file.

Returns:

true if read was successful, false on some error.

Throws:

IOException - on error.

readMethods

protected boolean readMethods(DataInputStream d)
                       throws IOException

Reads in the methods from the given stream.

Parameters:

d - Stream forming the .class file.

Returns:

true if read was successful, false on some error.

Throws:

IOException - on error.

writeConstantPool

protected boolean writeConstantPool(DataOutputStream dd)
                             throws IOException

Writes the current constant pool to the given stream.

Parameters:

dd - output stream.

Returns:

true if write was successful, false on some error.

Throws:

IOException - on error.

writeAttributes

protected boolean writeAttributes(DataOutputStream dd,
                                  int attributes_count,
                                  soot.coffi.attribute_info[] ai)
                           throws IOException

Writes the given array of attributes to the given stream.

Parameters:

dd - output stream.

attributes_count - number of attributes to write.

ai - array of attributes to write.

Returns:

true if write was successful, false on some error.

Throws:

IOException - on error.

writeFields

protected boolean writeFields(DataOutputStream dd)
                       throws IOException

Writes the fields to the given stream.

Parameters:

dd - output stream.

Returns:

true if write was successful, false on some error.

Throws:

IOException - on error.

writeMethods

protected boolean writeMethods(DataOutputStream dd)
                        throws IOException

Writes the methods to the given stream.

Parameters:

dd - output stream.

Returns:

true if write was successful, false on some error.

Throws:

IOException - on error.

parseMethod

public soot.coffi.Instruction parseMethod(method_info m)

Parses the given method, converting its bytecode array into a list of Instruction objects.

Parameters:

m - method to parse.

Returns:

head of a list of Instructions.

See Also:

Instruction, ByteCode, ByteCode.disassemble_bytecode(byte[], int)

parse

public void parse()

For every method, this calls parseMethod, storing the list of Instructions in the method_info object, and also constructs the corresponding CFG.

See Also:

parseMethod(soot.coffi.method_info), CFG