AbstractVisitor (Drools 4.0.0.11754MR2 API) - JBoss RULES 4.0.0.11754MR2 API 英文版文档

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org.drools.asm.util
Class AbstractVisitor

java.lang.Object
  org.drools.asm.util.AbstractVisitor

Direct Known Subclasses:: ASMifierAbstractVisitor, ASMifierAnnotationVisitor, TraceAbstractVisitor

public abstract class AbstractVisitor
extends Object
extends Object

An abstract visitor.

Author:: Eric Bruneton

Field Summary

protected StringBuffer buf
          A buffer that can be used to create strings.

static String[] OPCODES
          The names of the Java Virtual Machine opcodes.

List text
          The text to be printed.

static String[] TYPES
          Types for operand parameter of the MethodVisitor.visitIntInsn(int, int) method when opcode is NEWARRAY.

Constructor Summary

protected AbstractVisitor()
          Constructs a new AbstractVisitor.

Method Summary

static void appendString(StringBuffer buf, String s)
          Appends a quoted string to a given buffer.

static Attribute[] getDefaultAttributes()
          Returns the default ASMifiable prototypes.

List getText()
          Returns the text printed by this visitor.

Methods inherited from class java.lang.Object

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

Field Summary
`protected StringBuffer`	`buf` A buffer that can be used to create strings.
`static String[]`	`OPCODES` The names of the Java Virtual Machine opcodes.
`List`	`text` The text to be printed.
`static String[]`	`TYPES` Types for `operand` parameter of the `MethodVisitor.visitIntInsn(int, int)` method when `opcode` is `NEWARRAY`.

Constructor Summary
`protected`	`AbstractVisitor()` Constructs a new `AbstractVisitor`.

Method Summary
`static void`	`appendString(StringBuffer buf, String s)` Appends a quoted string to a given buffer.
`static Attribute[]`	`getDefaultAttributes()` Returns the default `ASMifiable` prototypes.
`List`	`getText()` Returns the text printed by this visitor.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

OPCODES

public static final String[] OPCODES

The names of the Java Virtual Machine opcodes.

TYPES

public static final String[] TYPES

Types for operand parameter of the MethodVisitor.visitIntInsn(int, int) method when opcode is NEWARRAY.

text

public final List text

The text to be printed. Since the code of methods is not necessarily visited in sequential order, one method after the other, but can be interlaced (some instructions from method one, then some instructions from method two, then some instructions from method one again...), it is not possible to print the visited instructions directly to a sequential stream. A class is therefore printed in a two steps process: a string tree is constructed during the visit, and printed to a sequential stream at the end of the visit. This string tree is stored in this field, as a string list that can contain other string lists, which can themselves contain other string lists, and so on.

buf

protected final StringBuffer buf

A buffer that can be used to create strings.

Constructor Detail