Package de.inetsoftware.jwebassembly.module

Class WasmConstInstruction

java.lang.Object

de.inetsoftware.jwebassembly.module.WasmInstruction

de.inetsoftware.jwebassembly.module.WasmConstInstruction

class WasmConstInstruction
extends WasmInstruction

WasmInstruction for constant values.

Nested Class Summary

Nested classes/interfaces inherited from class de.inetsoftware.jwebassembly.module.WasmInstruction

WasmInstruction.Type

Field Summary

Fields

Modifier and Type	Field	Description
private java.lang.Number	value
private ValueType	valueType

Constructor Summary

Constructors

Constructor	Description
WasmConstInstruction(java.lang.Number value, int javaCodePos, int lineNumber)	Create an instance of a constant instruction
WasmConstInstruction(java.lang.Number value, ValueType valueType, int javaCodePos, int lineNumber)	Create an instance of a constant instruction

Method Summary

Modifier and Type	Method	Description
(package private) int	getPopCount()	Get the count of values that are removed from the stack.
(package private) AnyType[]	getPopValueTypes()
(package private) AnyType	getPushValueType()	Get the ValueType if this instruction push a value on the stack.
(package private) WasmInstruction.Type	getType()	Get the type of instruction
private static ValueType	getValueType(java.lang.Number value)	Find the matching ValueType for the given value.
void	writeTo(ModuleWriter writer)	Write this instruction to the WASM module.

Methods inherited from class de.inetsoftware.jwebassembly.module.WasmInstruction

getCodePosition, getLineNumber, setCodePosition

Methods inherited from class java.lang.Object

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

Field Detail

value

private final java.lang.Number value

valueType

private final ValueType valueType

Constructor Detail

WasmConstInstruction

WasmConstInstruction(java.lang.Number value,
                     ValueType valueType,
                     int javaCodePos,
                     int lineNumber)

Create an instance of a constant instruction

Parameters:

value - the constant value

valueType - the data type of the number

javaCodePos - the code position/offset in the Java method

lineNumber - the line number in the Java source code

WasmConstInstruction

WasmConstInstruction(java.lang.Number value,
                     int javaCodePos,
                     int lineNumber)

Create an instance of a constant instruction

Parameters:

value - the constant value

javaCodePos - the code position/offset in the Java method

lineNumber - the line number in the Java source code

Method Detail

getType

WasmInstruction.Type getType()

Get the type of instruction

Specified by:

getType in class WasmInstruction

Returns:

the type

getValueType

@Nonnull
private static ValueType getValueType(java.lang.Number value)

Find the matching ValueType for the given value.

Parameters:

value - the constant value

Returns:

the ValueType

writeTo

public void writeTo(@Nonnull
                    ModuleWriter writer)
             throws java.io.IOException

Write this instruction to the WASM module.

Specified by:

writeTo in class WasmInstruction

Parameters:

writer - the target writer

Throws:

java.io.IOException - if any I/O error occur

getPushValueType

AnyType getPushValueType()

Get the ValueType if this instruction push a value on the stack.

Specified by:

getPushValueType in class WasmInstruction

Returns:

the ValueType or null if no value is push

getPopCount

int getPopCount()

Get the count of values that are removed from the stack.

Specified by:

getPopCount in class WasmInstruction

Returns:

the count

getPopValueTypes

AnyType[] getPopValueTypes()

Specified by:

getPopValueTypes in class WasmInstruction