All Downloads are FREE. Search and download functionalities are using the official Maven repository.

mockit.external.asm.MethodVisitor Maven / Gradle / Ivy

Go to download

JMockit is a Java toolkit for automated developer testing. It contains mocking/faking APIs and a code coverage tool, supporting both JUnit and TestNG. The mocking APIs allow all kinds of Java code, without testability restrictions, to be tested in isolation from selected dependencies.

There is a newer version: 1.49
Show newest version
/***
 * ASM: a very small and fast Java bytecode manipulation framework
 * Copyright (c) 2000-2011 INRIA, France Telecom
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */
package mockit.external.asm;

/**
 * A visitor to visit a Java method. The methods of this class must be called in
 * the following order: ( visitParameter )* [
 * visitAnnotationDefault ] ( visitAnnotation |
 * visitTypeAnnotation | visitAttribute )* [
 * visitCode ( visitFrame | visitXInsn |
 * visitLabel | visitInsnAnnotation |
 * visitTryCatchBlock | visitTryCatchBlockAnnotation |
 * visitLocalVariable | visitLocalVariableAnnotation |
 * visitLineNumber )* visitMaxs ] visitEnd. In
 * addition, the visitXInsn and visitLabel methods must
 * be called in the sequential order of the bytecode instructions of the visited
 * code, visitInsnAnnotation must be called after the annotated
 * instruction, visitTryCatchBlock must be called before the
 * labels passed as arguments have been visited,
 * visitTryCatchBlockAnnotation must be called after the
 * corresponding try catch block has been visited, and the
 * visitLocalVariable, visitLocalVariableAnnotation and
 * visitLineNumber methods must be called after the labels
 * passed as arguments have been visited.
 * 
 * @author Eric Bruneton
 */
public abstract class MethodVisitor {

    /**
     * The method visitor to which this visitor must delegate method calls. May
     * be null.
     */
    protected MethodVisitor mv;

    /**
     * Constructs a new {@link MethodVisitor}.
     * 
     *
     *
     *
     */
    public MethodVisitor() {
        this(null);
    }

    /**
     * Constructs a new {@link MethodVisitor}.
     * 
     *
     *
     *
     * @param mv
     *            the method visitor to which this visitor must delegate method
     *            calls. May be null.
     */
    public MethodVisitor(final MethodVisitor mv) {
        this.mv = mv;
    }

    // -------------------------------------------------------------------------
    // Parameters, annotations and non standard attributes
    // -------------------------------------------------------------------------

    /**
     * Visits a parameter of this method.
     * 
     * @param name
     *            parameter name or null if none is provided.
     * @param access
     *            the parameter's access flags, only ACC_FINAL,
     *            ACC_SYNTHETIC or/and ACC_MANDATED are
     *            allowed (see {@link Opcodes}).
     */
    public void visitParameter(String name, int access) {
        if (mv != null) {
            mv.visitParameter(name, access);
        }
    }

    /**
     * Visits the default value of this annotation interface method.
     * 
     * @return a visitor to the visit the actual default value of this
     *         annotation interface method, or null if this visitor is
     *         not interested in visiting this default value. The 'name'
     *         parameters passed to the methods of this annotation visitor are
     *         ignored. Moreover, exacly one visit method must be called on this
     *         annotation visitor, followed by visitEnd.
     */
    public AnnotationVisitor visitAnnotationDefault() {
        if (mv != null) {
            return mv.visitAnnotationDefault();
        }
        return null;
    }

    /**
     * Visits an annotation of this method.
     * 
     * @param desc
     *            the class descriptor of the annotation class.
     * @param visible
     *            true if the annotation is visible at runtime.
     * @return a visitor to visit the annotation values, or null if
     *         this visitor is not interested in visiting this annotation.
     */
    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
        if (mv != null) {
            return mv.visitAnnotation(desc, visible);
        }
        return null;
    }

    /**
     * Visits an annotation on a type in the method signature.
     * 
     * @param typeRef
     *            a reference to the annotated type. The sort of this type
     *            reference must be
     *            METHOD_TYPE_PARAMETER,
     *
     *            METHOD_TYPE_PARAMETER_BOUND,
     *            METHOD_RETURN},
     *            METHOD_RECEIVER},
     *            METHOD_FORMAL_PARAMETER
     *            or
     *            THROWS.
     * @param typePath
     *            the path to the annotated type argument, wildcard bound, array
     *            element type, or static inner type within 'typeRef'. May be
     *            null if the annotation targets 'typeRef' as a whole.
     * @param desc
     *            the class descriptor of the annotation class.
     * @param visible
     *            true if the annotation is visible at runtime.
     * @return a visitor to visit the annotation values, or null if
     *         this visitor is not interested in visiting this annotation.
     */
    public AnnotationVisitor visitTypeAnnotation(int typeRef,
            TypePath typePath, String desc, boolean visible) {
        if (mv != null) {
            return mv.visitTypeAnnotation(typeRef, typePath, desc, visible);
        }
        return null;
    }

    /**
     * Visits an annotation of a parameter this method.
     * 
     * @param parameter
     *            the parameter index.
     * @param desc
     *            the class descriptor of the annotation class.
     * @param visible
     *            true if the annotation is visible at runtime.
     * @return a visitor to visit the annotation values, or null if
     *         this visitor is not interested in visiting this annotation.
     */
    public AnnotationVisitor visitParameterAnnotation(int parameter,
            String desc, boolean visible) {
        if (mv != null) {
            return mv.visitParameterAnnotation(parameter, desc, visible);
        }
        return null;
    }

    /**
     * Visits a non standard attribute of this method.
     * 
     * @param attr
     *            an attribute.
     */
    public void visitAttribute(Attribute attr) {
        if (mv != null) {
            mv.visitAttribute(attr);
        }
    }

    /**
     * Starts the visit of the method's code, if any (i.e. non abstract method).
     */
    public void visitCode() {
        if (mv != null) {
            mv.visitCode();
        }
    }

    /**
     * Visits the current state of the local variables and operand stack
     * elements. This method must(*) be called just before any
     * instruction i that follows an unconditional branch instruction
     * such as GOTO or THROW, that is the target of a jump instruction, or that
     * starts an exception handler block. The visited types must describe the
     * values of the local variables and of the operand stack elements just
     * before i is executed.
*
* (*) this is mandatory only for classes whose version is greater than or * equal to {@link Opcodes#V1_6 V1_6}.
*
* The frames of a method must be given either in expanded form, or in * compressed form (all frames must use the same format, i.e. you must not * mix expanded and compressed frames within a single method): *
    *
  • In expanded form, all frames must have the F_NEW type.
  • *
  • In compressed form, frames are basically "deltas" from the state of * the previous frame: *
      *
    • {@link Opcodes#F_SAME} representing frame with exactly the same * locals as the previous frame and with the empty stack.
    • *
    • {@link Opcodes#F_SAME1} representing frame with exactly the same * locals as the previous frame and with single value on the stack ( * nStack is 1 and stack[0] contains value for the * type of the stack item).
    • *
    • {@link Opcodes#F_APPEND} representing frame with current locals are * the same as the locals in the previous frame, except that additional * locals are defined (nLocal is 1, 2 or 3 and * local elements contains values representing added types).
    • *
    • {@link Opcodes#F_CHOP} representing frame with current locals are the * same as the locals in the previous frame, except that the last 1-3 locals * are absent and with the empty stack (nLocals is 1, 2 or 3).
    • *
    • {@link Opcodes#F_FULL} representing complete frame data.
    • *
    *
  • *
*
* In both cases the first frame, corresponding to the method's parameters * and access flags, is implicit and must not be visited. Also, it is * illegal to visit two or more frames for the same code location (i.e., at * least one instruction must be visited between two calls to visitFrame). * * @param type * the type of this stack map frame. Must be * {@link Opcodes#F_NEW} for expanded frames, or * {@link Opcodes#F_FULL}, {@link Opcodes#F_APPEND}, * {@link Opcodes#F_CHOP}, {@link Opcodes#F_SAME} or * {@link Opcodes#F_APPEND}, {@link Opcodes#F_SAME1} for * compressed frames. * @param nLocal * the number of local variables in the visited frame. * @param local * the local variable types in this frame. This array must not be * modified. Primitive types are represented by * {@link Opcodes#TOP}, {@link Opcodes#INTEGER}, * {@link Opcodes#FLOAT}, {@link Opcodes#LONG}, * {@link Opcodes#DOUBLE},{@link Opcodes#NULL} or * {@link Opcodes#UNINITIALIZED_THIS} (long and double are * represented by a single element). Reference types are * represented by String objects (representing internal names), * and uninitialized types by Label objects (this label * designates the NEW instruction that created this uninitialized * value). * @param nStack * the number of operand stack elements in the visited frame. * @param stack * the operand stack types in this frame. This array must not be * modified. Its content has the same format as the "local" * array. * @throws IllegalStateException * if a frame is visited just after another one, without any * instruction between the two (unless this frame is a * Opcodes#F_SAME frame, in which case it is silently ignored). */ public void visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) { if (mv != null) { mv.visitFrame(type, nLocal, local, nStack, stack); } } // ------------------------------------------------------------------------- // Normal instructions // ------------------------------------------------------------------------- /** * Visits a zero operand instruction. * * @param 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. */ public void visitInsn(int opcode) { if (mv != null) { mv.visitInsn(opcode); } } /** * Visits an instruction with a single int operand. * * @param opcode * the opcode of the instruction to be visited. This opcode is * either BIPUSH, SIPUSH or NEWARRAY. * @param operand * the operand of the instruction to be visited.
* When opcode is BIPUSH, operand value should be between * Byte.MIN_VALUE and Byte.MAX_VALUE.
* When opcode is SIPUSH, operand value should be between * Short.MIN_VALUE and Short.MAX_VALUE.
* When opcode is NEWARRAY, operand value should be one of * {@link Opcodes#T_BOOLEAN}, {@link Opcodes#T_CHAR}, * {@link Opcodes#T_FLOAT}, {@link Opcodes#T_DOUBLE}, * {@link Opcodes#T_BYTE}, {@link Opcodes#T_SHORT}, * {@link Opcodes#T_INT} or {@link Opcodes#T_LONG}. */ public void visitIntInsn(int opcode, int operand) { if (mv != null) { mv.visitIntInsn(opcode, operand); } } /** * Visits a local variable instruction. A local variable instruction is an * instruction that loads or stores the value of a local variable. * * @param 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. * @param var * the operand of the instruction to be visited. This operand is * the index of a local variable. */ public void visitVarInsn(int opcode, int var) { if (mv != null) { mv.visitVarInsn(opcode, var); } } /** * Visits a type instruction. A type instruction is an instruction that * takes the internal name of a class as parameter. * * @param opcode * the opcode of the type instruction to be visited. This opcode * is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF. * @param type * the operand of the instruction to be visited. This operand * must be the internal name of an object or array class (see * {@link Type#getInternalName() getInternalName}). */ public void visitTypeInsn(int opcode, String type) { if (mv != null) { mv.visitTypeInsn(opcode, type); } } /** * Visits a field instruction. A field instruction is an instruction that * loads or stores the value of a field of an object. * * @param opcode * the opcode of the type instruction to be visited. This opcode * is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD. * @param owner * the internal name of the field's owner class (see * {@link Type#getInternalName() getInternalName}). * @param name * the field's name. * @param desc * the field's descriptor (see {@link Type Type}). */ public void visitFieldInsn(int opcode, String owner, String name, String desc) { if (mv != null) { mv.visitFieldInsn(opcode, owner, name, desc); } } /** * Visits a method instruction. A method instruction is an instruction that * invokes a method. * * @param opcode * the opcode of the type instruction to be visited. This opcode * is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or * INVOKEINTERFACE. * @param owner * the internal name of the method's owner class (see * {@link Type#getInternalName() getInternalName}). * @param name * the method's name. * @param desc * the method's descriptor (see {@link Type Type}). * @param itf * if the method's owner class is an interface. */ public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) { if (mv != null) { mv.visitMethodInsn(opcode, owner, name, desc, itf); } } /** * Visits an invokedynamic instruction. * * @param name * the method's name. * @param desc * the method's descriptor (see {@link Type Type}). * @param bsm * the bootstrap method. * @param bsmArgs * the bootstrap method constant arguments. Each argument must be * an {@link Integer}, {@link Float}, {@link Long}, * {@link Double}, {@link String}, {@link Type} or {@link Handle} * value. This method is allowed to modify the content of the * array so a caller should expect that this array may change. */ public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) { if (mv != null) { mv.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs); } } /** * Visits a jump instruction. A jump instruction is an instruction that may * jump to another instruction. * * @param 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. * @param 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. */ public void visitJumpInsn(int opcode, Label label) { if (mv != null) { mv.visitJumpInsn(opcode, label); } } /** * Visits a label. A label designates the instruction that will be visited * just after it. * * @param label * a {@link Label Label} object. */ public void visitLabel(Label label) { if (mv != null) { mv.visitLabel(label); } } // ------------------------------------------------------------------------- // Special instructions // ------------------------------------------------------------------------- /** * Visits a LDC instruction. Note that new constant types may be added in * future versions of the Java Virtual Machine. To easily detect new * constant types, implementations of this method should check for * unexpected constant types, like this: * *
     * if (cst instanceof Integer) {
     *     // ...
     * } else if (cst instanceof Float) {
     *     // ...
     * } else if (cst instanceof Long) {
     *     // ...
     * } else if (cst instanceof Double) {
     *     // ...
     * } else if (cst instanceof String) {
     *     // ...
     * } else if (cst instanceof Type) {
     *     int sort = ((Type) cst).getSort();
     *     if (sort == Type.OBJECT) {
     *         // ...
     *     } else if (sort == Type.ARRAY) {
     *         // ...
     *     } else if (sort == Type.METHOD) {
     *         // ...
     *     } else {
     *         // throw an exception
     *     }
     * } else if (cst instanceof Handle) {
     *     // ...
     * } else {
     *     // throw an exception
     * }
     * 
* * @param cst * the constant to be loaded on the stack. This parameter must be * a non null {@link Integer}, a {@link Float}, a {@link Long}, a * {@link Double}, a {@link String}, a {@link Type} of OBJECT or * ARRAY sort for .class constants, for classes whose * version is 49.0, a {@link Type} of METHOD sort or a * {@link Handle} for MethodType and MethodHandle constants, for * classes whose version is 51.0. */ public void visitLdcInsn(Object cst) { if (mv != null) { mv.visitLdcInsn(cst); } } /** * Visits an IINC instruction. * * @param var * index of the local variable to be incremented. * @param increment * amount to increment the local variable by. */ public void visitIincInsn(int var, int increment) { if (mv != null) { mv.visitIincInsn(var, increment); } } /** * Visits a TABLESWITCH instruction. * * @param min * the minimum key value. * @param max * the maximum key value. * @param dflt * beginning of the default handler block. * @param labels * beginnings of the handler blocks. labels[i] is the * beginning of the handler block for the min + i key. */ public void visitTableSwitchInsn(int min, int max, Label dflt, Label... labels) { if (mv != null) { mv.visitTableSwitchInsn(min, max, dflt, labels); } } /** * Visits a LOOKUPSWITCH instruction. * * @param dflt * beginning of the default handler block. * @param keys * the values of the keys. * @param labels * beginnings of the handler blocks. labels[i] is the * beginning of the handler block for the keys[i] key. */ public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) { if (mv != null) { mv.visitLookupSwitchInsn(dflt, keys, labels); } } /** * Visits a MULTIANEWARRAY instruction. * * @param desc * an array type descriptor (see {@link Type Type}). * @param dims * number of dimensions of the array to allocate. */ public void visitMultiANewArrayInsn(String desc, int dims) { if (mv != null) { mv.visitMultiANewArrayInsn(desc, dims); } } /** * Visits an annotation on an instruction. This method must be called just * after the annotated instruction. It can be called several times * for the same instruction. * * @param typeRef * a reference to the annotated type. The sort of this type * reference must be INSTANCEOF, * NEW, * * CONSTRUCTOR_REFERENCE, * METHOD_REFERENCE, * CAST, * CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT, * * METHOD_INVOCATION_TYPE_ARGUMENT, * CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT, * or * METHOD_REFERENCE_TYPE_ARGUMENT. * * @param typePath * the path to the annotated type argument, wildcard bound, array * element type, or static inner type within 'typeRef'. May be * null if the annotation targets 'typeRef' as a whole. * @param desc * the class descriptor of the annotation class. * @param visible * true if the annotation is visible at runtime. * @return a visitor to visit the annotation values, or null if * this visitor is not interested in visiting this annotation. */ public AnnotationVisitor visitInsnAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) { if (mv != null) { return mv.visitInsnAnnotation(typeRef, typePath, desc, visible); } return null; } // ------------------------------------------------------------------------- // Exceptions table entries, debug information, max stack and max locals // ------------------------------------------------------------------------- /** * Visits a try catch block. * * @param start * beginning of the exception handler's scope (inclusive). * @param end * end of the exception handler's scope (exclusive). * @param handler * beginning of the exception handler's code. * @param type * internal name of the type of exceptions handled by the * handler, or null to catch any exceptions (for * "finally" blocks). * @throws IllegalArgumentException * if one of the labels has already been visited by this visitor * (by the {@link #visitLabel visitLabel} method). */ public void visitTryCatchBlock(Label start, Label end, Label handler, String type) { if (mv != null) { mv.visitTryCatchBlock(start, end, handler, type); } } /** * Visits an annotation on an exception handler type. This method must be * called after the {@link #visitTryCatchBlock} for the annotated * exception handler. It can be called several times for the same exception * handler. * * @param typeRef * a reference to the annotated type. The sort of this type * reference must be * EXCEPTION_PARAMETER. * @param typePath * the path to the annotated type argument, wildcard bound, array * element type, or static inner type within 'typeRef'. May be * null if the annotation targets 'typeRef' as a whole. * @param desc * the class descriptor of the annotation class. * @param visible * true if the annotation is visible at runtime. * @return a visitor to visit the annotation values, or null if * this visitor is not interested in visiting this annotation. */ public AnnotationVisitor visitTryCatchAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) { if (mv != null) { return mv.visitTryCatchAnnotation(typeRef, typePath, desc, visible); } return null; } /** * Visits a local variable declaration. * * @param name * the name of a local variable. * @param desc * the type descriptor of this local variable. * @param signature * the type signature of this local variable. May be * null if the local variable type does not use generic * types. * @param start * the first instruction corresponding to the scope of this local * variable (inclusive). * @param end * the last instruction corresponding to the scope of this local * variable (exclusive). * @param index * the local variable's index. * @throws IllegalArgumentException * if one of the labels has not already been visited by this * visitor (by the {@link #visitLabel visitLabel} method). */ public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) { if (mv != null) { mv.visitLocalVariable(name, desc, signature, start, end, index); } } /** * Visits an annotation on a local variable type. * * @param typeRef * a reference to the annotated type. The sort of this type * reference must be * LOCAL_VARIABLE or * RESOURCE_VARIABLE. * @param typePath * the path to the annotated type argument, wildcard bound, array * element type, or static inner type within 'typeRef'. May be * null if the annotation targets 'typeRef' as a whole. * @param start * the fist instructions corresponding to the continuous ranges * that make the scope of this local variable (inclusive). * @param end * the last instructions corresponding to the continuous ranges * that make the scope of this local variable (exclusive). This * array must have the same size as the 'start' array. * @param index * the local variable's index in each range. This array must have * the same size as the 'start' array. * @param desc * the class descriptor of the annotation class. * @param visible * true if the annotation is visible at runtime. * @return a visitor to visit the annotation values, or null if * this visitor is not interested in visiting this annotation. */ public AnnotationVisitor visitLocalVariableAnnotation(int typeRef, TypePath typePath, Label[] start, Label[] end, int[] index, String desc, boolean visible) { if (mv != null) { return mv.visitLocalVariableAnnotation(typeRef, typePath, start, end, index, desc, visible); } return null; } /** * Visits a line number declaration. * * @param line * a line number. This number refers to the source file from * which the class was compiled. * @param start * the first instruction corresponding to this line number. * @throws IllegalArgumentException * if start has not already been visited by this * visitor (by the {@link #visitLabel visitLabel} method). */ public void visitLineNumber(int line, Label start) { if (mv != null) { mv.visitLineNumber(line, start); } } /** * Visits the maximum stack size and the maximum number of local variables * of the method. * * @param maxStack * maximum stack size of the method. * @param maxLocals * maximum number of local variables for the method. */ public void visitMaxs(int maxStack, int maxLocals) { if (mv != null) { mv.visitMaxs(maxStack, maxLocals); } } /** * Visits the end of the method. This method, which is the last one to be * called, is used to inform the visitor that all the annotations and * attributes of the method have been visited. */ public void visitEnd() { if (mv != null) { mv.visitEnd(); } } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy