Java Doc for Label.java in  » Scripting » Nice » gnu » bytecode » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Scripting » Nice » gnu.bytecode   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    gnu.bytecode.Label All known Subclasses:   gnu.bytecode.CodeFragment, Label public class Label (Code) A Label represents a location in a Code attribute. Field Summary  int[] fixups       Label next       int position       int spring_position       int[] wide_fixups      Constructor Summary public   Label(Method method)      public   Label(CodeAttr code)      Method Summary public  void define(CodeAttr code)      Define the value of a label as having the current location. final public  boolean defined()      public  void emit(CodeAttr code)      Emit a reference to the current label.  void emit_spring(CodeAttr code)      Emit goto_w as target for far-away gotos in large methods. public  void emit_wide(CodeAttr code, int start_pc)      Emit a wide reference to the current label. public  boolean hasFixups()      Return true if there are references to this Label. We assume !defined(). final static  void relocate_wide(CodeAttr code, int pos, int target)      Field Detail fixups int[] fixups(Code) next Label next(Code) position int position(Code) spring_position int spring_position(Code) wide_fixups int[] wide_fixups(Code) Constructor Detail Label public Label(Method method)(Code) Label public Label(CodeAttr code)(Code) Method Detail define public void define(CodeAttr code)(Code) Define the value of a label as having the current location. Parameters:   code - the "Code" attribute of the current method defined final public boolean defined()(Code) emit public void emit(CodeAttr code)(Code) Emit a reference to the current label. Parameters:   method - the current methodEmit the reference as a 2-byte difference relative to PC-1. emit_spring void emit_spring(CodeAttr code)(Code) Emit goto_w as target for far-away gotos in large methods. Needs to be invoked if the earliest still-pending fixup is at the limit of a 2-byte relative jump. To solve the problem, we emit a goto_w for the label, and change all pending (short) fixups to point here. We also have to jump past this goto. emit_wide public void emit_wide(CodeAttr code, int start_pc)(Code) Emit a wide reference to the current label. Parameters:   code - the current method Parameters:   start_pc - the PC at the start of this instructionEmit the reference as a 4-byte difference relative to PC-offset. hasFixups public boolean hasFixups()(Code) Return true if there are references to this Label. We assume !defined(). relocate_wide final static void relocate_wide(CodeAttr code, int pos, int target)(Code) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)