Class StringManager

java.lang.Object

java.util.AbstractMap<String,Integer>

java.util.HashMap<String,Integer>

java.util.LinkedHashMap<String,Integer>

de.inetsoftware.jwebassembly.module.StringManager

All Implemented Interfaces:

Serializable, Cloneable, Map<String,Integer>, SequencedMap<String,Integer>

public class StringManager
extends LinkedHashMap<String,Integer>

Handle all the constant strings. The constant strings will be write into the data section. At runtime the strings will be instantiate on the fly and hold in a table.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
private FunctionManager	functions
private FunctionName	stringConstantFunction
private int	stringMemoryOffset

Constructor Summary

Constructors

Constructor	Description
StringManager(WasmOptions options)	Create a new instance.

Method Summary

Modifier and Type	Method	Description
Integer	get(Object str)	Get the positive id for the string.
(package private) FunctionName	getStringConstantFunction()	Get the function name object for the invalid reference #stringConstant(int) .
(package private) void	prepareFinish(ModuleWriter writer)	Finish the prepare.
private static void	writeVaruint32(int value, OutputStream out)	Write an unsigned integer.

Methods inherited from class LinkedHashMap

clear, containsValue, entrySet, forEach, getOrDefault, keySet, newLinkedHashMap, putFirst, putLast, removeEldestEntry, replaceAll, reversed, sequencedEntrySet, sequencedKeySet, sequencedValues, values

Methods inherited from class HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, newHashMap, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class AbstractMap

equals, hashCode, toString

Methods inherited from class Object

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

Methods inherited from interface Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from interface SequencedMap

firstEntry, lastEntry, pollFirstEntry, pollLastEntry

Field Details

stringConstantFunction

private FunctionName stringConstantFunction

functions

private FunctionManager functions

stringMemoryOffset

private int stringMemoryOffset

Constructor Details

StringManager

StringManager(WasmOptions options)

Create a new instance.

Parameters:

options - compiler properties and shared managers

Method Details

get

public Integer get(@Nonnull
 Object str)

Get the positive id for the string.

Specified by:

get in interface Map<String,Integer>

Overrides:

get in class LinkedHashMap<String,Integer>

Parameters:

str - the string

Returns:

the id

getStringConstantFunction

@Nonnull
FunctionName getStringConstantFunction()

Get the function name object for the

invalid reference

#stringConstant(int)

.

Returns:

the name

See Also:

• invalid reference

  #stringConstant(int)

prepareFinish

void prepareFinish(ModuleWriter writer)
            throws IOException

Finish the prepare. Now no new strings should be added.

Parameters:

writer - the targets for the strings

Throws:

IOException - if any I/O error occur

writeVaruint32

private static void writeVaruint32(@Nonnegative
 int value,
 OutputStream out)
                            throws IOException

Write an unsigned integer.

Parameters:

value - the value

out - target stream

Throws:

IOException - if an I/O error occurs.