JavaClass

typedef struct {
	/* Minor version of the class file specification */
	uint16_t minor_version;
	/* Major version of the class file specification */
	uint16_t major_version;
	/* The constant pool */
	ConstantPool *constant_pool;
	/* A 16-bit access flag.*/
	uint16_t access_flags;
	/* The number of interfaces implemented by this class */
	uint16_t interfaces_count;
	/* An array with the constant pool indices of the ClassEntry entries 
	* for the interfaces implemented by this class */
	uint16_t *interfaces;
	/* The number of fields this class has */
	uint16_t fields_count;
	/* An array with the fields for this class */
	Field *fields;
	/* The number of methods this class has */
	uint16_t methods_count;
	/* An array with the method for this class */
	Field *methods;
	/* The number of attributes for this class */
	uint16_t attributes_count;
	/* An array with the attributes for this class */
	AttributeContainer *attributes;
} JavaClass;

Holds information about a class. Everything is stored in native order with the exception of the of attributes. They are stored big-endian inside their AttributeContainer.

JAVA_CLASS_MAGIC

#define JAVA_CLASS_MAGIC 0xCAFEBABE

The first 4 bytes of every java class file.

ACC_PUBLIC

#define ACC_PUBLIC 0x0001 

Mask for public visibility.

ACC_PRIVATE

#define ACC_PRIVATE	0x0002

Mask for private visibility.

ACC_PROTECTED

#define ACC_PROTECTED 0x0004

Mask for protected visibility.

ACC_STATIC

#define ACC_STATIC 0x0008

Mask for static.

ACC_FINAL

#define ACC_FINAL 0x0010

Mask for final.

ACC_SYNCHRONIZED

#define ACC_SYNCHRONIZED 0x0020

Mask for synchronized.

ACC_VOLATILE

#define ACC_VOLATILE 0x0040

Mask for volatile.

ACC_TRANSIENT

#define ACC_TRANSIENT 0x0080

Mask for transient.

ACC_NATIVE

#define ACC_NATIVE 0x0100

Mask for native.

ACC_INTERFACE

#define ACC_INTERFACE 0x0200

Mask for interface.

ACC_ABSTRACT

#define ACC_ABSTRACT 0x0400

Mask for abstract.

ACC_STRICTFP

#define ACC_STRICTFP 0x0800

Mask to indicate that strict IEEE-754 floating point behavior is required.

jclass_class_new ()

JavaClass*  jclass_class_new                (const char *filename,
                                             const ClassPath *classpath);

Initializes a new JavaClass struct with info from the given file/class. If parsing fails it returns NULL. Use jclass_class_free() to free the class.

jclass_class_new_from_buffer ()

JavaClass*  jclass_class_new_from_buffer    (const char *data);

Creates a JavaClass struct from the given buffer. The buffer should be in the same format as a class file.

jclass_class_new_from_file ()

JavaClass*  jclass_class_new_from_file      (FILE *classfile);

Creates a JavaClass struct from the given class file. The file must be opened with "rb" permissions. The file will always be closed when the function returns.

jclass_class_free ()

void        jclass_class_free               (JavaClass *javaclass);

Frees a JavaClass struct.

jclass_class_get_vm_spec ()

const char* jclass_class_get_vm_spec        (JavaClass *javaclass);

Gives the minimum VM spec needed to run this class. The function returns a pointer to a constant string. Do not free it!

jclass_class_get_class_name ()

char*       jclass_class_get_class_name     (JavaClass *javaclass);

Gives the fully qualified name of the class.

jclass_class_get_super_class_name ()

char*       jclass_class_get_super_class_name
                                            (JavaClass *javaclass);

Gives the fully qualified name of the super class for the given class.

jclass_class_get_package_name ()

char*       jclass_class_get_package_name   (JavaClass *javaclass);

Gives the name of the package this class is part of. If the class is not in a package it returns NULL.

jclass_class_get_interfaces ()

char**      jclass_class_get_interfaces     (JavaClass *class_struct);

Gives a null terminated array with the names of all interfaces implemented by the given class. If the class does not implement anything it returns NULL.

Since: 0.4

jclass_class_get_sourcefile_name ()

char*       jclass_class_get_sourcefile_name
                                            (JavaClass *javaclass);

Gives the name of the source file used to compile this class. If the class does not have a SourceFile attribute it returns NULL.