Class WatParser

java.lang.Object

de.inetsoftware.jwebassembly.module.WasmCodeBuilder

de.inetsoftware.jwebassembly.watparser.WatParser

public class WatParser
extends WasmCodeBuilder

Parser for text format of a function.

Constructor Summary

Constructors

Constructor	Description
WatParser()

Method Summary

Modifier and Type	Method	Description
private int	addMemoryInstruction(MemoryOperator op, ValueType type, List<String> tokens, int i, int lineNumber)	Parse the optional tokens of a load memory instruction and add it.
private String	get(List<String> tokens, int idx)	Get the token at given position
private int	getInt(List<String> tokens, int idx)	Get the token at given position as int.
void	parse(String wat, MethodInfo method, Iterator<AnyType> signature, int lineNumber)	Parse the given wasm text format and generate a list of WasmInstuctions
private List<String>	splitTokens(String wat)	Split the string in tokens.

Methods inherited from class WasmCodeBuilder

addArrayInstruction, addBlockInstruction, addCallInstruction, addCallInterfaceInstruction, addCallVirtualInstruction, addConstInstruction, addConstInstruction, addConvertInstruction, addDupInstruction, addDupX1Instruction, addDupX2Instruction, addGlobalInstruction, addGlobalInstruction, addInvokeDynamic, addJumpPlaceholder, addLoadStoreInstruction, addLocalInstruction, addMemoryInstruction, addMultiNewArrayInstruction, addMultiNewArrayInstruction, addNopInstruction, addNumericInstruction, addStructInstruction, addTableInstruction, calculateVariables, getTypeManager, reset

Methods inherited from class Object

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

Constructor Details

WatParser

public WatParser()

Method Details

parse

public void parse(String wat,
 MethodInfo method,
 Iterator<AnyType> signature,
 int lineNumber)

Parse the given wasm text format and generate a list of WasmInstuctions

Parameters:

wat - the text format content of a function

method - the method with signature as fallback for a missing variable table

signature - alternative for method signature, can be null if method is set

lineNumber - the line number for an error message

getInt

private int getInt(List<String> tokens,
 @Nonnegative
 int idx)

Get the token at given position as int.

Parameters:

tokens - the token list

idx - the position in the tokens

Returns:

the int value

get

@Nonnull
private String get(List<String> tokens,
 @Nonnegative
 int idx)

Get the token at given position

Parameters:

tokens - the token list

idx - the position in the tokens

Returns:

the token

splitTokens

private List<String> splitTokens(@Nullable
 String wat)

Split the string in tokens.

Parameters:

wat - string with wasm text format

Returns:

the token list.

addMemoryInstruction

private int addMemoryInstruction(MemoryOperator op,
 ValueType type,
 List<String> tokens,
 int i,
 int lineNumber)

Parse the optional tokens of a load memory instruction and add it.

Parameters:

op - the operation

type - the type of the static field

tokens - the token list

i - the position in the tokens

lineNumber - the line number in the Java source code

Returns:

the current index to the tokens