public class ClassGeneratorUtil extends java.lang.Object implements Constants
Stub classes contain all of the fields of a BeanShell scripted class as well as two "callback" references to BeanShell namespaces: one for static methods and one for instance methods. Methods of the class are delegators which invoke corresponding methods on either the static or instance bsh object and then unpack and return the results. The static namespace utilizes a static import to delegate variable access to the class' static fields. The instance namespace utilizes a dynamic import (i.e. mixin) to delegate variable access to the class' instance variables.
Constructors for the class delegate to the static initInstance() method of ClassGeneratorUtil to initialize new instances of the object. initInstance() invokes the instance intializer code (init vars and instance blocks) and then delegates to the corresponding scripted constructor method in the instance namespace. Constructors contain special switch logic which allows the BeanShell to control the calling of alternate constructors (this() or super() references) at runtime.
Specially named superclass delegator methods are also generated in order to allow BeanShell to access overridden methods of the superclass (which reflection does not normally allow).
Modifier and Type | Class and Description |
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static class |
ClassGeneratorUtil.ConstructorArgs
A ConstructorArgs object holds evaluated arguments for a constructor
call as well as the index of a possible alternate selector to invoke.
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AALOAD, AASTORE, ACC_ABSTRACT, ACC_DEPRECATED, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH
Constructor and Description |
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ClassGeneratorUtil(Modifiers classModifiers,
java.lang.String className,
java.lang.String packageName,
java.lang.Class superClass,
java.lang.Class[] interfaces,
Variable[] vars,
DelayedEvalBshMethod[] bshmethods,
NameSpace classStaticNameSpace,
boolean isInterface) |
Modifier and Type | Method and Description |
---|---|
byte[] |
generateClass()
Generate the class bytecode for this class.
|
static void |
generateParameterReifierCode(java.lang.String[] paramTypes,
boolean isStatic,
CodeVisitor cv)
Generates the code to reify the arguments of the given method.
|
static void |
generateReturnCode(java.lang.String returnType,
CodeVisitor cv)
Generates the code to unreify the result of the given method.
|
static ClassGeneratorUtil.ConstructorArgs |
getConstructorArgs(java.lang.String superClassName,
This classStaticThis,
java.lang.Object[] consArgs,
int index)
Evaluate the arguments (if any) for the constructor specified by
the constructor index.
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static void |
initInstance(java.lang.Object instance,
java.lang.String className,
java.lang.Object[] args)
Initialize an instance of the class.
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public ClassGeneratorUtil(Modifiers classModifiers, java.lang.String className, java.lang.String packageName, java.lang.Class superClass, java.lang.Class[] interfaces, Variable[] vars, DelayedEvalBshMethod[] bshmethods, NameSpace classStaticNameSpace, boolean isInterface)
packageName
- e.g. "com.foo.bar"public byte[] generateClass()
public static void generateParameterReifierCode(java.lang.String[] paramTypes, boolean isStatic, CodeVisitor cv)
cv
- the code visitor to be used to generate the bytecode.isStatic
- the enclosing methods is staticpublic static void generateReturnCode(java.lang.String returnType, CodeVisitor cv)
cv
- the code visitor to be used to generate the bytecode.public static ClassGeneratorUtil.ConstructorArgs getConstructorArgs(java.lang.String superClassName, This classStaticThis, java.lang.Object[] consArgs, int index)
consArgs
- the arguments to the constructor. These are necessary in
the evaluation of the alt constructor args. e.g. Foo(a) { super(a); }public static void initInstance(java.lang.Object instance, java.lang.String className, java.lang.Object[] args)