org.jsweet.transpiler.extension

Class MapAdapter

java.lang.Object

org.jsweet.transpiler.extension.PrinterAdapter

org.jsweet.transpiler.extension.MapAdapter

public class MapAdapter
extends PrinterAdapter

This optional adapter tunes the JavaScript generation to use JavaScript ES6 maps to implement Java maps.

Note that this is a partial implementation that shall be extended to support more cases and adapted to your own requirements. Additionally, this implementation generates untyped JavaScript in order to avoid having to have the ES6 API in the compilation path.

Author:

Renaud Pawlak

Field Summary

Fields

Modifier and Type	Field and Description
protected static String[]	mapTypes Java types that need to be transpiled to ES6 maps.

Fields inherited from class org.jsweet.transpiler.extension.PrinterAdapter

context, logger, typeVariablesToErase

Constructor Summary

Constructors

Constructor and Description
MapAdapter(PrinterAdapter parent) Creates the adapter and initialize all type mappings.

Method Summary

Modifier and Type	Method and Description
boolean	substituteMethodInvocation(MethodInvocationElement invocation) This where the actual API bridge is implemented.
boolean	substituteNewClass(NewClassElement newClass) When one of the types in mapTypes is found, instantiates an ES6 map.

Methods inherited from class org.jsweet.transpiler.extension.PrinterAdapter

adaptDocComment, addAnnotation, addAnnotation, addAnnotationManager, addAnnotationWithValue, addHeader, addTypeMapping, addTypeMapping, addTypeMappings, afterType, endIndent, eraseSuperClass, eraseSuperInterface, findExecutableDeclarationInType, getAnnotationValue, getAnnotationValue, getContext, getErasedTypes, getFunctionalTypeMappings, getHeader, getMappedType, getModuleImportDescriptor, getParentAdapter, getParentElement, getParentElement, getPrinter, getRootRelativeName, getTranspilerOptions, getTypeMappingTarget, hasAnnotationType, isAmbientDeclaration, isMappedType, isSubstituteSuperTypes, needsImport, print, print, print, print, printArgList, printIdentifierList, printIndent, println, printMacroName, removeLastChar, removeLastChar, removeLastChars, removeLastIndent, report, report, report, report, setParentAdapter, setPrinter, space, startIndent, substitute, substituteArrayAccess, substituteAssignment, substituteAssignmentWithOperator, substituteBinaryOperator, substituteCaseStatementPattern, substituteForEachLoop, substituteIdentifier, substituteInstanceof, substituteUnaryOperator, substituteVariableAccess, types, util

Methods inherited from class java.lang.Object

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

Field Detail

mapTypes

protected static String[] mapTypes

Java types that need to be transpiled to ES6 maps.

Constructor Detail

MapAdapter

public MapAdapter(PrinterAdapter parent)

Creates the adapter and initialize all type mappings.

Method Detail

substituteNewClass

public boolean substituteNewClass(NewClassElement newClass)

When one of the types in mapTypes is found, instantiates an ES6 map. Delegate to the parent otherwise.

Overrides:

substituteNewClass in class PrinterAdapter

Parameters:

newClass - the new class expression

Returns:

true if substituted

substituteMethodInvocation

public boolean substituteMethodInvocation(MethodInvocationElement invocation)

This where the actual API bridge is implemented. Each well-known Java map method invocation is translated to the corresponding ES6 map method invocation.

Overrides:

substituteMethodInvocation in class PrinterAdapter

Parameters:

invocation - the invocation being printed

Returns:

true if substituted