net.hasor.utils.asm.Context Maven / Gradle / Ivy

// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
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//    notice, this list of conditions and the following disclaimer in the
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//    this software without specific prior written permission.
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package net.hasor.utils.asm;
/**
 * Information about a class being parsed in a {@link ClassReader}.
 *
 * @author Eric Bruneton
 */
final class Context {
    /** The prototypes of the attributes that must be parsed in this class. */
    Attribute[] attributePrototypes;
    /**
     * The options used to parse this class. One or more of {@link ClassReader#SKIP_CODE}, {@link
     * ClassReader#SKIP_DEBUG}, {@link ClassReader#SKIP_FRAMES}, {@link ClassReader#EXPAND_FRAMES} or
     * {@link ClassReader#EXPAND_ASM_INSNS}.
     */
    int         parsingOptions;
    /** The buffer used to read strings in the constant pool. */
    char[]      charBuffer;
    // Information about the current method, i.e. the one read in the current (or latest) call
    // to {@link ClassReader#readMethod()}.
    /** The access flags of the current method. */
    int         currentMethodAccessFlags;
    /** The name of the current method. */
    String      currentMethodName;
    /** The descriptor of the current method. */
    String      currentMethodDescriptor;
    /**
     * The labels of the current method, indexed by bytecode offset (only bytecode offsets for which a
     * label is needed have a non null associated Label).
     */
    Label[]     currentMethodLabels;
    // Information about the current type annotation target, i.e. the one read in the current
    // (or latest) call to {@link ClassReader#readAnnotationTarget()}.
    /**
     * The target_type and target_info of the current type annotation target, encoded as described in
     * {@link TypeReference}.
     */
    int         currentTypeAnnotationTarget;
    /** The target_path of the current type annotation target. */
    TypePath    currentTypeAnnotationTargetPath;
    /** The start of each local variable range in the current local variable annotation. */
    Label[]     currentLocalVariableAnnotationRangeStarts;
    /** The end of each local variable range in the current local variable annotation. */
    Label[]     currentLocalVariableAnnotationRangeEnds;
    /**
     * The local variable index of each local variable range in the current local variable annotation.
     */
    int[]       currentLocalVariableAnnotationRangeIndices;
    // Information about the current stack map frame, i.e. the one read in the current (or latest)
    // call to {@link ClassReader#readFrame()}.
    /** The bytecode offset of the current stack map frame. */
    int         currentFrameOffset;
    /**
     * The type of the current stack map frame. One of {@link Opcodes#F_FULL}, {@link
     * Opcodes#F_APPEND}, {@link Opcodes#F_CHOP}, {@link Opcodes#F_SAME} or {@link Opcodes#F_SAME1}.
     */
    int         currentFrameType;
    /**
     * The number of local variable types in the current stack map frame. Each type is represented
     * with a single array element (even long and double).
     */
    int         currentFrameLocalCount;
    /**
     * The delta number of local variable types in the current stack map frame (each type is
     * represented with a single array element - even long and double). This is the number of local
     * variable types in this frame, minus the number of local variable types in the previous frame.
     */
    int         currentFrameLocalCountDelta;
    /**
     * The types of the local variables in the current stack map frame. Each type is represented with
     * a single array element (even long and double), using the format described in {@link
     * MethodVisitor#visitFrame}. Depending on {@link #currentFrameType}, this contains the types of
     * all the local variables, or only those of the additional ones (compared to the previous frame).
     */
    Object[]    currentFrameLocalTypes;
    /**
     * The number stack element types in the current stack map frame. Each type is represented with a
     * single array element (even long and double).
     */
    int         currentFrameStackCount;
    /**
     * The types of the stack elements in the current stack map frame. Each type is represented with a
     * single array element (even long and double), using the format described in {@link
     * MethodVisitor#visitFrame}.
     */
    Object[]    currentFrameStackTypes;
}