Package de.inetsoftware.jwebassembly.binary

Class WasmOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

de.inetsoftware.jwebassembly.wasm.LittleEndianOutputStream

de.inetsoftware.jwebassembly.binary.WasmOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

class WasmOutputStream
extends LittleEndianOutputStream

Field Summary

Fields

Modifier and Type	Field	Description
private WasmOptions	options

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor	Description
WasmOutputStream(WasmOptions options)	Create a in memory stream.
WasmOutputStream(WasmOptions options, java.io.OutputStream output)	Create a wrapped stream.

Method Summary

Modifier and Type	Method	Description
(package private) void	writeConst(java.lang.Number value, ValueType valueType)	Write a constant number value
void	writeDefaultValue(AnyType type)	Write the default/initial value for a type.
(package private) void	writeDouble(double value)	Write an double value.
(package private) void	writeFloat(float value)	Write an float value.
void	writeOpCode(int op)	Write a binary operation code.
void	writeRefValueType(AnyType type)	Write the value type.
(package private) void	writeSection(SectionType type, WasmOutputStream data)	Write a section with header and data.
(package private) void	writeString(java.lang.String str)	Write a string as UTF8 encoded.
void	writeValueType(AnyType type)	Write a value type.
(package private) void	writeVarint(long value)	Write an integer value.
(package private) void	writeVaruint32(int value)	Write an unsigned integer.

Methods inherited from class de.inetsoftware.jwebassembly.wasm.LittleEndianOutputStream

reset, size, write, write, writeInt32, writeTo

Methods inherited from class java.io.FilterOutputStream

close, flush, write

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Field Detail

options

private final WasmOptions options

Constructor Detail

WasmOutputStream

WasmOutputStream(WasmOptions options)

Create a in memory stream.

Parameters:

options - compiler properties

WasmOutputStream

WasmOutputStream(WasmOptions options,
                 java.io.OutputStream output)

Create a wrapped stream.

Parameters:

output - the target of data

options - compiler properties

Method Detail

writeOpCode

public void writeOpCode(int op)
                 throws java.io.IOException

Write a binary operation code.

Parameters:

op - a constant from InstructionOpcodes

Throws:

java.io.IOException - if an I/O error occurs.

writeValueType

public void writeValueType(AnyType type)
                    throws java.io.IOException

Write a value type.

Parameters:

type - a type constant

Throws:

java.io.IOException - if an I/O error occurs.

writeRefValueType

public void writeRefValueType(AnyType type)
                       throws java.io.IOException

Write the value type. If it is a struct type then as reference type.

Parameters:

type - a type constant

Throws:

java.io.IOException - if an I/O error occurs.

writeDefaultValue

public void writeDefaultValue(AnyType type)
                       throws java.io.IOException

Write the default/initial value for a type.

Parameters:

type - the type

Throws:

java.io.IOException - if an I/O error occurs.

writeVaruint32

void writeVaruint32(@Nonnegative
                    int value)
             throws java.io.IOException

Write an unsigned integer.

Parameters:

value - the value

Throws:

java.io.IOException - if an I/O error occurs.

writeVarint

void writeVarint(long value)
          throws java.io.IOException

Write an integer value.

Parameters:

value - the value

Throws:

java.io.IOException - if an I/O error occurs.

writeFloat

void writeFloat(float value)
         throws java.io.IOException

Write an float value.

Parameters:

value - the value

Throws:

java.io.IOException - if an I/O error occurs.

writeDouble

void writeDouble(double value)
          throws java.io.IOException

Write an double value.

Parameters:

value - the value

Throws:

java.io.IOException - if an I/O error occurs.

writeConst

void writeConst(java.lang.Number value,
                ValueType valueType)
         throws java.io.IOException

Write a constant number value

Parameters:

value - the value

valueType - the data type of the number

Throws:

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

writeString

void writeString(@Nonnull
                 java.lang.String str)
          throws java.io.IOException

Write a string as UTF8 encoded.

Parameters:

str - the string

Throws:

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

writeSection

void writeSection(SectionType type,
                  WasmOutputStream data)
           throws java.io.IOException

Write a section with header and data.

Parameters:

type - the name of the section

data - the data of the section

Throws:

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