Package org.springframework.expression.spel.ast

Class Literal

java.lang.Object

org.springframework.expression.spel.ast.SpelNodeImpl

org.springframework.expression.spel.ast.Literal

All Implemented Interfaces:

Opcodes, SpelNode

Direct Known Subclasses:

BooleanLiteral, FloatLiteral, IntLiteral, LongLiteral, NullLiteral, RealLiteral, StringLiteral

public abstract class Literal
extends SpelNodeImpl

Common superclass for nodes representing literals (boolean, string, number, etc).

Author:

Andy Clement, Juergen Hoeller, Semyon Danilov

Field Summary

Fields inherited from class org.springframework.expression.spel.ast.SpelNodeImpl

children, exitTypeDescriptor

Fields inherited from interface org.springframework.asm.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, ASM10_EXPERIMENTAL, ASM4, ASM5, ASM6, ASM7, ASM8, ASM9, 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, 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, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SOURCE_DEPRECATED, SOURCE_MASK, SWAP, 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, V22, V23, V24, V9

Constructor Summary

Constructors

Constructor	Description
Literal(@Nullable String originalValue, int startPos, int endPos)

Method Summary

Modifier and Type	Method	Description
static Literal	getIntLiteral(String numberToken, int startPos, int endPos, int radix)	Process the string form of a number, using the specified base if supplied and return an appropriate literal to hold it.
abstract TypedValue	getLiteralValue()
static Literal	getLongLiteral(String numberToken, int startPos, int endPos, int radix)
final @Nullable String	getOriginalValue()
static Literal	getRealLiteral(String numberToken, int startPos, int endPos, boolean isFloat)
final TypedValue	getValueInternal(ExpressionState state)
boolean	isNumberLiteral()	Determine if this literal represents a number.
String	toString()
String	toStringAST()	Return the string form of this AST node.

Methods inherited from class org.springframework.expression.spel.ast.SpelNodeImpl

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.expression.spel.SpelNode

generateCode, isCompilable

Constructor Details

Literal

public Literal(@Nullable String originalValue,
 int startPos,
 int endPos)

Method Details

getOriginalValue

public final @Nullable String getOriginalValue()

getValueInternal

public final TypedValue getValueInternal(ExpressionState state)
                                  throws SpelEvaluationException

Specified by:

getValueInternal in class SpelNodeImpl

Throws:

SpelEvaluationException

isNumberLiteral

public boolean isNumberLiteral()

Determine if this literal represents a number.

Returns:

true if this literal represents a number

Since:

6.1

toString

public String toString()

Overrides:

toString in class Object

toStringAST

public String toStringAST()

Description copied from interface: SpelNode

Return the string form of this AST node.

Returns:

the string form

getLiteralValue

public abstract TypedValue getLiteralValue()

getIntLiteral

public static Literal getIntLiteral(String numberToken,
 int startPos,
 int endPos,
 int radix)

Process the string form of a number, using the specified base if supplied and return an appropriate literal to hold it. Any suffix to indicate a long will be taken into account (either 'l' or 'L' is supported).

Parameters:

numberToken - the token holding the number as its payload (eg. 1234 or 0xCAFE)

radix - the base of number

Returns:

a subtype of Literal that can represent it

getLongLiteral

public static Literal getLongLiteral(String numberToken,
 int startPos,
 int endPos,
 int radix)

getRealLiteral

public static Literal getRealLiteral(String numberToken,
 int startPos,
 int endPos,
 boolean isFloat)