Package com.sun.tools.javac.jvm

Class ClassWriter

java.lang.Object

com.sun.tools.javac.jvm.ClassFile

com.sun.tools.javac.jvm.ClassWriter

public class ClassWriter
extends ClassFile

This class provides operations to map an internal symbol table graph rooted in a ClassSymbol into a classfile.

This is NOT part of any supported API. If you write code that depends on this, you do so at your own risk. This code and its internal interfaces are subject to change or deletion without notice.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ClassWriter.PoolOverflow Thrown when the constant pool is over full.
static class	ClassWriter.StringOverflow

Nested classes/interfaces inherited from class com.sun.tools.javac.jvm.ClassFile

ClassFile.NameAndType, ClassFile.Version

Field Summary

Fields

Modifier and Type	Field and Description
protected static Context.Key<ClassWriter>	classWriterKey

Fields inherited from class com.sun.tools.javac.jvm.ClassFile

CONSTANT_Class, CONSTANT_Double, CONSTANT_Fieldref, CONSTANT_Float, CONSTANT_Integer, CONSTANT_InterfaceMethodref, CONSTANT_InvokeDynamic, CONSTANT_Long, CONSTANT_MethodHandle, CONSTANT_Methodref, CONSTANT_MethodType, CONSTANT_NameandType, CONSTANT_String, CONSTANT_Unicode, CONSTANT_Utf8, JAVA_MAGIC, MAX_CODE, MAX_DIMENSIONS, MAX_LOCALS, MAX_PARAMETERS, MAX_STACK, REF_getField, REF_getStatic, REF_invokeInterface, REF_invokeSpecial, REF_invokeStatic, REF_invokeVirtual, REF_newInvokeSpecial, REF_putField, REF_putStatic

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ClassWriter(Context context) Construct a class writer, given an options table.

Method Summary

Modifier and Type	Method and Description
static String	flagNames(long flags) Return flags as a string, separated by " ".
static ClassWriter	instance(Context context) Get the ClassWriter instance for this context.
JavaFileObject	writeClass(Symbol.ClassSymbol c) Emit a class file for a given class.
void	writeClassFile(OutputStream out, Symbol.ClassSymbol c) Write class `c' to outstream `out'.
protected int	writeEnclosingMethodAttribute(Name attributeName, Symbol.ClassSymbol c) Write the EnclosingMethod attribute with a specified name.
protected int	writeExtraClassAttributes(Symbol.ClassSymbol c) Allows subclasses to write additional class attributes
Name	xClassName(Type t) Given a type t, return the extended class name of its erasure in external representation.

Methods inherited from class com.sun.tools.javac.jvm.ClassFile

externalize, externalize, internalize, internalize

Methods inherited from class java.lang.Object

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

Field Detail

classWriterKey

protected static final Context.Key<ClassWriter> classWriterKey

Constructor Detail

ClassWriter

protected ClassWriter(Context context)

Construct a class writer, given an options table.

Method Detail

instance

public static ClassWriter instance(Context context)

Get the ClassWriter instance for this context.

flagNames

public static String flagNames(long flags)

Return flags as a string, separated by " ".

xClassName

public Name xClassName(Type t)

Given a type t, return the extended class name of its erasure in external representation.

writeEnclosingMethodAttribute

protected int writeEnclosingMethodAttribute(Name attributeName,
                                            Symbol.ClassSymbol c)

Write the EnclosingMethod attribute with a specified name. Returns the number of attributes written (0 or 1).

writeClass

public JavaFileObject writeClass(Symbol.ClassSymbol c)
                          throws IOException,
                                 ClassWriter.PoolOverflow,
                                 ClassWriter.StringOverflow

Emit a class file for a given class.

Parameters:

c - The class from which a class file is generated.

Throws:

IOException

ClassWriter.PoolOverflow

ClassWriter.StringOverflow

writeClassFile

public void writeClassFile(OutputStream out,
                           Symbol.ClassSymbol c)
                    throws IOException,
                           ClassWriter.PoolOverflow,
                           ClassWriter.StringOverflow

Write class `c' to outstream `out'.

Throws:

IOException

ClassWriter.PoolOverflow

ClassWriter.StringOverflow

writeExtraClassAttributes

protected int writeExtraClassAttributes(Symbol.ClassSymbol c)

Allows subclasses to write additional class attributes

Returns:

the number of attributes written