org.objectweb.asm.xml
Class SAXCodeAdapter

java.lang.Object
  extended by org.objectweb.asm.xml.SAXCodeAdapter
All Implemented Interfaces:
CodeVisitor

public final class SAXCodeAdapter
extends Object
implements CodeVisitor

A CodeVisitor that generates SAX 2.0 events from the visited code.

Author:
Eugene Kuleshov
See Also:
SAXClassAdapter, Processor

Constructor Summary
SAXCodeAdapter(ContentHandler h)
          Constructs a new SAXCodeAdapter object.
 
Method Summary
 void visitAttribute(Attribute attr)
          Visits a non standard attribute of the code.
 void visitFieldInsn(int opcode, String owner, String name, String desc)
          Visits a field instruction.
 void visitIincInsn(int var, int increment)
          Visits an IINC instruction.
 void visitInsn(int opcode)
          Visits a zero operand instruction.
 void visitIntInsn(int opcode, int operand)
          Visits an instruction with a single int operand.
 void visitJumpInsn(int opcode, Label label)
          Visits a jump instruction.
 void visitLabel(Label label)
          Visits a label.
 void visitLdcInsn(Object cst)
          Visits a LDC instruction.
 void visitLineNumber(int line, Label start)
          Visits a line number declaration.
 void visitLocalVariable(String name, String desc, Label start, Label end, int index)
          Visits a local variable declaration.
 void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)
          Visits a LOOKUPSWITCH instruction.
 void visitMaxs(int maxStack, int maxLocals)
          Visits the maximum stack size and the maximum number of local variables of the method.
 void visitMethodInsn(int opcode, String owner, String name, String desc)
          Visits a method instruction.
 void visitMultiANewArrayInsn(String desc, int dims)
          Visits a MULTIANEWARRAY instruction.
 void visitTableSwitchInsn(int min, int max, Label dflt, Label[] labels)
          Visits a TABLESWITCH instruction.
 void visitTryCatchBlock(Label start, Label end, Label handler, String type)
          Visits a try catch block.
 void visitTypeInsn(int opcode, String desc)
          Visits a type instruction.
 void visitVarInsn(int opcode, int var)
          Visits a local variable instruction.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SAXCodeAdapter

public SAXCodeAdapter(ContentHandler h)
Constructs a new SAXCodeAdapter object.

Parameters:
h - content handler that will be used to send SAX 2.0 events.
Method Detail

visitInsn

public final void visitInsn(int opcode)
Description copied from interface: CodeVisitor
Visits a zero operand instruction.

Specified by:
visitInsn in interface CodeVisitor
Parameters:
opcode - the opcode of the instruction to be visited. This opcode is either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, or MONITOREXIT.

visitIntInsn

public final void visitIntInsn(int opcode,
                               int operand)
Description copied from interface: CodeVisitor
Visits an instruction with a single int operand.

Specified by:
visitIntInsn in interface CodeVisitor
Parameters:
opcode - the opcode of the instruction to be visited. This opcode is either BIPUSH, SIPUSH or NEWARRAY.
operand - the operand of the instruction to be visited.

visitVarInsn

public final void visitVarInsn(int opcode,
                               int var)
Description copied from interface: CodeVisitor
Visits a local variable instruction. A local variable instruction is an instruction that loads or stores the value of a local variable.

Specified by:
visitVarInsn in interface CodeVisitor
Parameters:
opcode - the opcode of the local variable instruction to be visited. This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET.
var - the operand of the instruction to be visited. This operand is the index of a local variable.

visitTypeInsn

public final void visitTypeInsn(int opcode,
                                String desc)
Description copied from interface: CodeVisitor
Visits a type instruction. A type instruction is an instruction that takes a type descriptor as parameter.

Specified by:
visitTypeInsn in interface CodeVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.
desc - the operand of the instruction to be visited. This operand is must be a fully qualified class name in internal form, or the type descriptor of an array type (see Type).

visitFieldInsn

public final void visitFieldInsn(int opcode,
                                 String owner,
                                 String name,
                                 String desc)
Description copied from interface: CodeVisitor
Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object.

Specified by:
visitFieldInsn in interface CodeVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.
owner - the internal name of the field's owner class (see getInternalName).
name - the field's name.
desc - the field's descriptor (see Type).

visitMethodInsn

public final void visitMethodInsn(int opcode,
                                  String owner,
                                  String name,
                                  String desc)
Description copied from interface: CodeVisitor
Visits a method instruction. A method instruction is an instruction that invokes a method.

Specified by:
visitMethodInsn in interface CodeVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
owner - the internal name of the method's owner class (see getInternalName).
name - the method's name.
desc - the method's descriptor (see Type).

visitJumpInsn

public final void visitJumpInsn(int opcode,
                                Label label)
Description copied from interface: CodeVisitor
Visits a jump instruction. A jump instruction is an instruction that may jump to another instruction.

Specified by:
visitJumpInsn in interface CodeVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.
label - the operand of the instruction to be visited. This operand is a label that designates the instruction to which the jump instruction may jump.

visitLabel

public final void visitLabel(Label label)
Description copied from interface: CodeVisitor
Visits a label. A label designates the instruction that will be visited just after it.

Specified by:
visitLabel in interface CodeVisitor
Parameters:
label - a Label object.

visitLdcInsn

public final void visitLdcInsn(Object cst)
Description copied from interface: CodeVisitor
Visits a LDC instruction.

Specified by:
visitLdcInsn in interface CodeVisitor
Parameters:
cst - the constant to be loaded on the stack. This parameter must be a non null Integer, a Float, a Long, a Double a String (or a Type for .class constants, for classes whose version is 49.0 or more).

visitIincInsn

public final void visitIincInsn(int var,
                                int increment)
Description copied from interface: CodeVisitor
Visits an IINC instruction.

Specified by:
visitIincInsn in interface CodeVisitor
Parameters:
var - index of the local variable to be incremented.
increment - amount to increment the local variable by.

visitTableSwitchInsn

public final void visitTableSwitchInsn(int min,
                                       int max,
                                       Label dflt,
                                       Label[] labels)
Description copied from interface: CodeVisitor
Visits a TABLESWITCH instruction.

Specified by:
visitTableSwitchInsn in interface CodeVisitor
Parameters:
min - the minimum key value.
max - the maximum key value.
dflt - beginning of the default handler block.
labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the min + i key.

visitLookupSwitchInsn

public final void visitLookupSwitchInsn(Label dflt,
                                        int[] keys,
                                        Label[] labels)
Description copied from interface: CodeVisitor
Visits a LOOKUPSWITCH instruction.

Specified by:
visitLookupSwitchInsn in interface CodeVisitor
Parameters:
dflt - beginning of the default handler block.
keys - the values of the keys.
labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the keys[i] key.

visitMultiANewArrayInsn

public final void visitMultiANewArrayInsn(String desc,
                                          int dims)
Description copied from interface: CodeVisitor
Visits a MULTIANEWARRAY instruction.

Specified by:
visitMultiANewArrayInsn in interface CodeVisitor
Parameters:
desc - an array type descriptor (see Type).
dims - number of dimensions of the array to allocate.

visitTryCatchBlock

public final void visitTryCatchBlock(Label start,
                                     Label end,
                                     Label handler,
                                     String type)
Description copied from interface: CodeVisitor
Visits a try catch block.

Specified by:
visitTryCatchBlock in interface CodeVisitor
Parameters:
start - beginning of the exception handler's scope (inclusive).
end - end of the exception handler's scope (exclusive).
handler - beginning of the exception handler's code.
type - internal name of the type of exceptions handled by the handler, or null to catch any exceptions (for "finally" blocks).

visitMaxs

public final void visitMaxs(int maxStack,
                            int maxLocals)
Description copied from interface: CodeVisitor
Visits the maximum stack size and the maximum number of local variables of the method.

Specified by:
visitMaxs in interface CodeVisitor
Parameters:
maxStack - maximum stack size of the method.
maxLocals - maximum number of local variables for the method.

visitLocalVariable

public final void visitLocalVariable(String name,
                                     String desc,
                                     Label start,
                                     Label end,
                                     int index)
Description copied from interface: CodeVisitor
Visits a local variable declaration.

Specified by:
visitLocalVariable in interface CodeVisitor
Parameters:
name - the name of a local variable.
desc - the type descriptor of this local variable.
start - the first instruction corresponding to the scope of this local variable (inclusive).
end - the last instruction corresponding to the scope of this local variable (exclusive).
index - the local variable's index.

visitLineNumber

public final void visitLineNumber(int line,
                                  Label start)
Description copied from interface: CodeVisitor
Visits a line number declaration.

Specified by:
visitLineNumber in interface CodeVisitor
Parameters:
line - a line number. This number refers to the source file from which the class was compiled.
start - the first instruction corresponding to this line number.

visitAttribute

public final void visitAttribute(Attribute attr)
Description copied from interface: CodeVisitor
Visits a non standard attribute of the code. This method must visit only the first attribute in the given attribute list.

Specified by:
visitAttribute in interface CodeVisitor
Parameters:
attr - a non standard code attribute. Must not be null.