kanga.meta
Enum KangaReg

java.lang.Object
  java.lang.Enum<KangaReg>
      kanga.meta.KangaReg

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<KangaReg>

public enum KangaReg
extends java.lang.Enum<KangaReg>

This enum class represents a Reg object (immutable) that can be used in the creation of Kanga syntaxtree node.

Author:

Santoso Wijaya

Enum Constant Summary

A0
the a0 register

A1
the a1 register

A2
the a2 register

A3
the a3 register

S0
the s0 register

S1
the s1 register

S2
the s2 register

S3
the s3 register

S4
the s4 register

S5
the s5 register

S6
the s6 register

S7
the s7 register

T0
the t0 register

T1
the t1 register

T2
the t2 register

T3
the t3 register

T4
the t4 register

T5
the t5 register

T6
the t6 register

T7
the t7 register

T8
the t8 register

T9
the t9 register

V0
the v0 register

V1
the v1 register

Field Summary

static KangaReg[]	ARGUMENTS The designated registers to store arguments to procedure calls.
static java.util.Set<KangaReg>	CALLEE_SAVED Defines the set of registers that, by convention, are "callee-saved." These include all of the s registers.
static java.util.Set<KangaReg>	CALLER_SAVED Defines the set of registers that, by convention, are "caller-saved." These include all of the t registers and a registers.
static KangaReg	SCRATCH_0 The designated "scratch" register.
static KangaReg	SCRATCH_1 The designated "scratch" register.

Method Summary

static Reg	createRegNode(KangaReg reg) Creates and return a Kanga syntaxtree node that represents a Reg.
java.lang.String	getName() Returns the register name.
boolean	isCalleeSaved() Returns true if this register is a callee-saved register.
boolean	isCallerSaved() Returns true if this register is a caller-saved register.
static KangaReg	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static KangaReg[]	values() Returns an array containing the constants of this enum type, in the order they're declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

A0

public static final KangaReg A0

the a0 register

A1

public static final KangaReg A1

the a1 register

A2

public static final KangaReg A2

the a2 register

A3

public static final KangaReg A3

the a3 register

T0

public static final KangaReg T0

the t0 register

T1

public static final KangaReg T1

the t1 register

T2

public static final KangaReg T2

the t2 register

T3

public static final KangaReg T3

the t3 register

T4

public static final KangaReg T4

the t4 register

T5

public static final KangaReg T5

the t5 register

T6

public static final KangaReg T6

the t6 register

T7

public static final KangaReg T7

the t7 register

S0

public static final KangaReg S0

the s0 register

S1

public static final KangaReg S1

the s1 register

S2

public static final KangaReg S2

the s2 register

S3

public static final KangaReg S3

the s3 register

S4

public static final KangaReg S4

the s4 register

S5

public static final KangaReg S5

the s5 register

S6

public static final KangaReg S6

the s6 register

S7

public static final KangaReg S7

the s7 register

T8

public static final KangaReg T8

the t8 register

T9

public static final KangaReg T9

the t9 register

V0

public static final KangaReg V0

the v0 register

V1

public static final KangaReg V1

the v1 register

Field Detail

SCRATCH_0

public static final KangaReg SCRATCH_0

The designated "scratch" register. (Implementation detail: this is the v0 register).

SCRATCH_1

public static final KangaReg SCRATCH_1

The designated "scratch" register. (Implementation detail: this is the v1 register).

ARGUMENTS

public static final KangaReg[] ARGUMENTS

The designated registers to store arguments to procedure calls. (Implementation detail: these are the a registers).

CALLER_SAVED

public static final java.util.Set<KangaReg> CALLER_SAVED

Defines the set of registers that, by convention, are "caller-saved." These include all of the t registers and a registers.

CALLEE_SAVED

public static final java.util.Set<KangaReg> CALLEE_SAVED

Defines the set of registers that, by convention, are "callee-saved." These include all of the s registers.

Method Detail

values

public static final KangaReg[] values()

Returns an array containing the constants of this enum type, in the order they're declared. This method may be used to iterate over the constants as follows:

for(KangaReg c : KangaReg.values())
        System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they're declared

valueOf

public static KangaReg valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

getName

public java.lang.String getName()

Returns the register name.

Returns:

the register name

isCallerSaved

public boolean isCallerSaved()

Returns true if this register is a caller-saved register.

Returns:

true if this register is a caller-saved register

isCalleeSaved

public boolean isCalleeSaved()

Returns true if this register is a callee-saved register.

Returns:

true if this register is a callee-saved register

createRegNode

public static Reg createRegNode(KangaReg reg)

Creates and return a Kanga syntaxtree node that represents a Reg.

Parameters:

reg - the Reg object

Returns:

a spiglet syntaxtree node (JTB) that represents a Reg