程序包 cn.taketoday.expression.spel.ast

类 MethodReference

java.lang.Object

cn.taketoday.expression.spel.ast.SpelNodeImpl

cn.taketoday.expression.spel.ast.MethodReference

所有已实现的接口:

Opcodes, SpelNode

public class MethodReference
extends SpelNodeImpl

Expression language AST node that represents a method reference.

从以下版本开始:

4.0

作者:

Andy Clement, Juergen Hoeller, Harry Yang

嵌套类概要

嵌套类

修饰符和类型	类	说明
private static class	MethodReference.CachedMethodExecutor
private class	MethodReference.MethodValueRef

字段概要

字段

修饰符和类型	字段	说明
private MethodReference.CachedMethodExecutor	cachedExecutor
private final String	name
private final boolean	nullSafe
private Character	originalPrimitiveExitTypeDescriptor

从类继承的字段 cn.taketoday.expression.spel.ast.SpelNodeImpl

children, exitTypeDescriptor

从接口继承的字段 cn.taketoday.bytecode.Opcodes

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_RECORD, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, 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, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, 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, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JAVA_VERSION, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PRIVATE_FINAL_STATIC, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SOURCE_DEPRECATED, SOURCE_MASK, SWAP, SWITCH_STYLE_HASH, SWITCH_STYLE_HASHONLY, SWITCH_STYLE_TRIE, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V_PREVIEW, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, V20, V21, V9

构造器概要

构造器

构造器	说明
MethodReference(boolean nullSafe, String methodName, int startPos, int endPos, SpelNodeImpl... arguments)

方法概要

修饰符和类型	方法	说明
private MethodExecutor	findAccessorForMethod(List<TypeDescriptor> argumentTypes, Object targetObject, EvaluationContext evaluationContext)
void	generateCode(MethodVisitor mv, CodeFlow cf)	Generate the bytecode for this node into the supplied visitor.
private Object[]	getArguments(ExpressionState state)
private List<TypeDescriptor>	getArgumentTypes(Object... arguments)
private MethodExecutor	getCachedExecutor(EvaluationContext evaluationContext, Object value, TypeDescriptor target, List<TypeDescriptor> argumentTypes)
final String	getName()	Get the name of the referenced method.
private TypedValue	getValueInternal(EvaluationContext evaluationContext, Object value, TypeDescriptor targetType, Object[] arguments)
TypedValue	getValueInternal(ExpressionState state)
protected ValueRef	getValueRef(ExpressionState state)
boolean	isCompilable()	A method reference is compilable if it has been resolved to a reflectively accessible method and the child nodes (arguments to the method) are also compilable.
final boolean	isNullSafe()	Does this node represent a null-safe method reference?
private void	throwIfNotNullSafe(List<TypeDescriptor> argumentTypes)
private void	throwSimpleExceptionIfPossible(Object value, AccessException ex)	Decode the AccessException, throwing a lightweight evaluation exception or, if the cause was a RuntimeException, throw the RuntimeException directly.
String	toStringAST()	Return the string form the this AST node.
private void	updateExitTypeDescriptor()

从类继承的方法 cn.taketoday.expression.spel.ast.SpelNodeImpl

generateCodeForArgument, generateCodeForArguments, getChild, getChildCount, getEndPosition, getExitDescriptor, getObjectClass, getStartPosition, getTypedValue, getValue, getValue, isWritable, nextChildIs, setValue, setValueInternal

从类继承的方法 java.lang.Object

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

字段详细资料

nullSafe

private final boolean nullSafe

name

private final String name

originalPrimitiveExitTypeDescriptor

@Nullable
private Character originalPrimitiveExitTypeDescriptor

cachedExecutor

@Nullable
private volatile MethodReference.CachedMethodExecutor cachedExecutor

构造器详细资料

MethodReference

public MethodReference(boolean nullSafe,
 String methodName,
 int startPos,
 int endPos,
 SpelNodeImpl... arguments)

方法详细资料

isNullSafe

public final boolean isNullSafe()

Does this node represent a null-safe method reference?

getName

public final String getName()

Get the name of the referenced method.

getValueRef

protected ValueRef getValueRef(ExpressionState state)
                        throws EvaluationException

覆盖:

getValueRef 在类中 SpelNodeImpl

抛出:

EvaluationException

getValueInternal

public TypedValue getValueInternal(ExpressionState state)
                            throws EvaluationException

指定者:

getValueInternal 在类中 SpelNodeImpl

抛出:

EvaluationException

getValueInternal

private TypedValue getValueInternal(EvaluationContext evaluationContext,
 @Nullable
 Object value,
 @Nullable
 TypeDescriptor targetType,
 Object[] arguments)

throwIfNotNullSafe

private void throwIfNotNullSafe(List<TypeDescriptor> argumentTypes)

getArguments

private Object[] getArguments(ExpressionState state)

getArgumentTypes

private List<TypeDescriptor> getArgumentTypes(Object... arguments)

getCachedExecutor

@Nullable
private MethodExecutor getCachedExecutor(EvaluationContext evaluationContext,
 Object value,
 @Nullable
 TypeDescriptor target,
 List<TypeDescriptor> argumentTypes)

findAccessorForMethod

private MethodExecutor findAccessorForMethod(List<TypeDescriptor> argumentTypes,
 Object targetObject,
 EvaluationContext evaluationContext)
                                      throws SpelEvaluationException

抛出:

SpelEvaluationException

throwSimpleExceptionIfPossible

private void throwSimpleExceptionIfPossible(Object value,
 AccessException ex)

Decode the AccessException, throwing a lightweight evaluation exception or, if the cause was a RuntimeException, throw the RuntimeException directly.

updateExitTypeDescriptor

private void updateExitTypeDescriptor()

toStringAST

public String toStringAST()

从接口复制的说明: SpelNode

Return the string form the this AST node.

返回:

the string form

isCompilable

public boolean isCompilable()

A method reference is compilable if it has been resolved to a reflectively accessible method and the child nodes (arguments to the method) are also compilable.

覆盖:

isCompilable 在类中 SpelNodeImpl

返回:

true if this node can be compiled to bytecode

generateCode

public void generateCode(MethodVisitor mv,
 CodeFlow cf)

从类复制的说明: SpelNodeImpl

Generate the bytecode for this node into the supplied visitor. Context info about the current expression being compiled is available in the codeflow object, e.g. including information about the type of the object currently on the stack.

覆盖:

generateCode 在类中 SpelNodeImpl

参数:

mv - the ASM MethodVisitor into which code should be generated

cf - a context object with info about what is on the stack