程序包 cn.taketoday.expression.spel.ast

类 OpMultiply

java.lang.Object

cn.taketoday.expression.spel.ast.SpelNodeImpl

cn.taketoday.expression.spel.ast.Operator

cn.taketoday.expression.spel.ast.OpMultiply

所有已实现的接口:

Opcodes, SpelNode

public class OpMultiply
extends Operator

Implements the multiply operator.

Conversions and promotions are handled as defined in Section 5.6.2 of the Java Language Specification, with the addiction of BigDecimal/BigInteger management:

If any of the operands is of a reference type, unboxing conversion (Section 5.1.8) is performed. Then:
If either operand is of type BigDecimal, the other is converted to BigDecimal.
If either operand is of type double, the other is converted to double.
Otherwise, if either operand is of type float, the other is converted to float.
If either operand is of type BigInteger, the other is converted to BigInteger.
Otherwise, if either operand is of type long, the other is converted to long.
Otherwise, both operands are converted to type int.

从以下版本开始:

4.0

作者:

Andy Clement, Juergen Hoeller, Sam Brannen, Giovanni Dall'Oglio Risso

嵌套类概要

从类继承的嵌套类/接口 cn.taketoday.expression.spel.ast.Operator

Operator.DescriptorComparison

字段概要

字段

修饰符和类型	字段	说明
private static final int	MAX_REPEATED_TEXT_SIZE	Maximum number of characters permitted in repeated text.

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

leftActualDescriptor, rightActualDescriptor

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
OpMultiply(int startPos, int endPos, SpelNodeImpl... operands)

方法概要

修饰符和类型	方法	说明
private void	checkRepeatedTextSize(String text, int count)
void	generateCode(MethodVisitor mv, CodeFlow cf)	Generate the bytecode for this node into the supplied visitor.
TypedValue	getValueInternal(ExpressionState state)	Implements the multiply operator directly here for certain types of supported operands and otherwise delegates to any registered overloader for types not supported here.
boolean	isCompilable()	Check whether a node can be compiled to bytecode.

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

equalityCheck, generateComparisonCode, getLeftOperand, getOperatorName, getRightOperand, isCompilableOperatorUsingNumerics, toStringAST

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

generateCodeForArgument, generateCodeForArguments, getChild, getChildCount, getEndPosition, getExitDescriptor, getObjectClass, getStartPosition, getTypedValue, getValue, getValue, getValueRef, 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

MAX_REPEATED_TEXT_SIZE

private static final int MAX_REPEATED_TEXT_SIZE

Maximum number of characters permitted in repeated text.

另请参阅:

• 常量字段值

构造器详细资料

OpMultiply

public OpMultiply(int startPos,
 int endPos,
 SpelNodeImpl... operands)

方法详细资料

getValueInternal

public TypedValue getValueInternal(ExpressionState state)
                            throws EvaluationException

Implements the multiply operator directly here for certain types of supported operands and otherwise delegates to any registered overloader for types not supported here.

Supported operand types:

• numbers
• String and int ('abc' * 2 == 'abcabc')

指定者:

getValueInternal 在类中 SpelNodeImpl

抛出:

EvaluationException

checkRepeatedTextSize

private void checkRepeatedTextSize(String text,
 int count)

isCompilable

public boolean isCompilable()

从类复制的说明: SpelNodeImpl

Check whether a node can be compiled to bytecode. The reasoning in each node may be different but will typically involve checking whether the exit type descriptor of the node is known and any relevant child nodes are 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