private void generateRTTImplementsMethod(DartClass x) {
ClassElement classElement = x.getSymbol();
// 1) create static type information construction function
// function Foo$lookupOrCreateRTT(rtt, typeArgs) {
//
// // superclass
// FooSuper$addTo(rtt, superTypeArg1, ...);
// // interfaces
// FooInterface1$addTo(rtt, interface1TypeArg1, ...);
//
// // fill in derived types
// rtt.derivedTypes = [
// FirstRef$lookupOrCreateRTT(typearg1, ...),
// ...
// ]
// }
boolean hasTypeParams = classElement.getTypeParameters().size() > 0;
// Build the function
JsFunction implementsFn = new JsFunction(globalScope);
implementsFn.setBody(new JsBlock());
List<JsStatement> body = implementsFn.getBody().getStatements();
JsScope scope = new JsScope(globalScope, "temp");
JsName rtt = scope.declareName("rtt");
implementsFn.getParameters().add(new JsParameter(rtt));
JsName typeArgs = null;
if (hasTypeParams) {
typeArgs = scope.declareName("typeArgs");
implementsFn.getParameters().add(new JsParameter(typeArgs));
}
JsInvocation callAddTo = newInvocation(getRTTAddToMethodName(classElement), rtt.makeRef());
if (hasTypeParams) {
typeArgs = scope.declareName("typeArgs");
callAddTo.getArguments().add(typeArgs.makeRef());
}
body.add(callAddTo.makeStmt());
// Add the derived types
if (hasTypeParams) {
// Populated the list of derived types
JsArrayLiteral derivedTypesArray = new JsArrayLiteral();
// TODO(johnlenz): Add needed types here.
JsExpression addDerivedTypes =
assign(null, nameref(null, rtt.makeRef(), "derivedTypes"), derivedTypesArray);
body.add(addDerivedTypes.makeStmt());
}
// Finally, Add the function
JsExpression fnDecl = assign(null, getRTTImplementsMethodName(classElement), implementsFn);
globalBlock.getStatements().add(fnDecl.makeStmt());
}
@NotNull
@Override
public JsFunction deepCopy() {
JsFunction functionCopy = new JsFunction(scope.getParent(), scope.getDescription(), name);
functionCopy.getScope().copyOwnNames(scope);
functionCopy.setBody(body.deepCopy());
functionCopy.params = AstUtil.deepCopy(params);
return functionCopy.withMetadataFrom(this);
}
private void injectInterfaceMarkers(ClassElement classElement, SourceInfo srcRef) {
JsProgram program = translationContext.getProgram();
JsName classJsName = translationContext.getNames().getName(classElement);
for (InterfaceType iface : getAllInterfaces(classElement)) {
JsStatement assignment =
(JsStatement)
newAssignment(
newNameRef(
newNameRef(new JsNameRef(classJsName), "prototype"),
"$implements$"
+ translationContext
.getMangler()
.mangleClassName(iface.getElement())),
program.getNumberLiteral(1))
.makeStmt()
.setSourceRef(srcRef);
globalBlock.getStatements().add(assignment);
}
}
private void generateRTTLookupMethod(DartClass x) {
ClassElement classElement = x.getSymbol();
boolean hasTypeParams = hasTypeParameters(classElement);
// 1) create static type information construction function
// function Foo$lookupOrCreateRTT(typeargs) {
// return $createRTT(name, Foo$RTTimplements, typeargs) ;
// }
// Build the function
JsFunction lookupFn = new JsFunction(globalScope);
lookupFn.setBody(new JsBlock());
List<JsStatement> body = lookupFn.getBody().getStatements();
JsScope scope = new JsScope(globalScope, "temp");
JsProgram program = translationContext.getProgram();
JsInvocation invokeCreate =
call(null, newQualifiedNameRef("RTT.create"), getRTTClassId(classElement));
List<JsExpression> callArgs = invokeCreate.getArguments();
if (hasRTTImplements(classElement)) {
callArgs.add(getRTTImplementsMethodName(classElement));
} else if (hasTypeParams) {
// need a placeholder param if the typeArgs are needed.
callArgs.add(program.getNullLiteral());
}
if (hasTypeParams) {
JsName typeArgs = scope.declareName("typeArgs");
lookupFn.getParameters().add(new JsParameter(typeArgs));
callArgs.add(typeArgs.makeRef());
}
body.add(new JsReturn(invokeCreate));
// Finally, Add the function
JsExpression fnDecl = assign(null, getRTTLookupMethodName(classElement), lookupFn);
globalBlock.getStatements().add(fnDecl.makeStmt());
}
private JsNode map(Node node) throws JsParserException {
switch (node.getType()) {
case TokenStream.SCRIPT:
{
JsBlock block = new JsBlock();
mapStatements(block.getStatements(), node);
return block;
}
case TokenStream.DEBUGGER:
return mapDebuggerStatement(node);
case TokenStream.VOID:
// VOID = nothing was parsed for this node
return null;
case TokenStream.EXPRSTMT:
return mapExpressionStatement(node);
case TokenStream.REGEXP:
return mapRegExp(node);
case TokenStream.ADD:
return mapBinaryOperation(JsBinaryOperator.ADD, node);
case TokenStream.SUB:
return mapBinaryOperation(JsBinaryOperator.SUB, node);
case TokenStream.MUL:
return mapBinaryOperation(JsBinaryOperator.MUL, node);
case TokenStream.DIV:
return mapBinaryOperation(JsBinaryOperator.DIV, node);
case TokenStream.MOD:
return mapBinaryOperation(JsBinaryOperator.MOD, node);
case TokenStream.AND:
return mapBinaryOperation(JsBinaryOperator.AND, node);
case TokenStream.OR:
return mapBinaryOperation(JsBinaryOperator.OR, node);
case TokenStream.BITAND:
return mapBinaryOperation(JsBinaryOperator.BIT_AND, node);
case TokenStream.BITOR:
return mapBinaryOperation(JsBinaryOperator.BIT_OR, node);
case TokenStream.BITXOR:
return mapBinaryOperation(JsBinaryOperator.BIT_XOR, node);
case TokenStream.ASSIGN:
return mapAssignmentVariant(node);
case TokenStream.RELOP:
return mapRelationalVariant(node);
case TokenStream.EQOP:
return mapEqualityVariant(node);
case TokenStream.SHOP:
return mapShiftVariant(node);
case TokenStream.UNARYOP:
return mapUnaryVariant(node);
case TokenStream.INC:
return mapIncDecFixity(JsUnaryOperator.INC, node);
case TokenStream.DEC:
return mapIncDecFixity(JsUnaryOperator.DEC, node);
case TokenStream.HOOK:
return mapConditional(node);
case TokenStream.STRING:
return program.getStringLiteral(node.getString());
case TokenStream.NUMBER_INT:
return mapIntNumber(node);
case TokenStream.NUMBER:
return mapDoubleNumber(node);
case TokenStream.CALL:
return mapCall(node);
case TokenStream.GETPROP:
return mapGetProp(node);
case TokenStream.SETPROP:
return mapSetProp(node);
case TokenStream.DELPROP:
return mapDeleteProp(node);
case TokenStream.IF:
return mapIfStatement(node);
case TokenStream.WHILE:
return mapDoOrWhileStatement(true, node);
case TokenStream.DO:
return mapDoOrWhileStatement(false, node);
case TokenStream.FOR:
return mapForStatement(node);
case TokenStream.WITH:
return mapWithStatement(node);
case TokenStream.GETELEM:
return mapGetElem(node);
case TokenStream.SETELEM:
return mapSetElem(node);
case TokenStream.FUNCTION:
return mapFunction(node);
case TokenStream.BLOCK:
return mapBlock(node);
case TokenStream.SETNAME:
return mapBinaryOperation(JsBinaryOperator.ASG, node);
case TokenStream.NAME:
case TokenStream.BINDNAME:
return scopeContext.globalNameFor(node.getString()).makeRef();
case TokenStream.RETURN:
return mapReturn(node);
case TokenStream.BREAK:
return mapBreak(node);
case TokenStream.CONTINUE:
return mapContinue(node);
case TokenStream.OBJLIT:
return mapObjectLit(node);
case TokenStream.ARRAYLIT:
return mapArrayLit(node);
case TokenStream.VAR:
return mapVar(node);
case TokenStream.PRIMARY:
return mapPrimary(node);
case TokenStream.COMMA:
return mapBinaryOperation(JsBinaryOperator.COMMA, node);
case TokenStream.NEW:
return mapNew(node);
case TokenStream.THROW:
return mapThrowStatement(node);
case TokenStream.TRY:
return mapTryStatement(node);
case TokenStream.SWITCH:
return mapSwitchStatement(node);
case TokenStream.LABEL:
return mapLabel(node);
default:
int tokenType = node.getType();
throw createParserException("Unexpected top-level token type: " + tokenType, node);
}
}
private JsBlock mapBlock(Node nodeStmts) throws JsParserException {
JsBlock block = new JsBlock();
mapStatements(block.getStatements(), nodeStmts);
return block;
}
private void generateRTTAddToMethod(DartClass x) {
ClassElement classElement = x.getSymbol();
// 2) create "addTo" method
// Foo$Type$addTo(target, typeargs) {
// var rtt = Foo$lookupOrCreateRTT(typeargs)
// target.implementedTypes[rtt.classkey] = rtt;
// }
// Build the function
JsFunction addToFn = new JsFunction(globalScope);
addToFn.setBody(new JsBlock());
JsScope scope = new JsScope(globalScope, "temp");
JsName targetType = scope.declareName("target");
addToFn.getParameters().add(new JsParameter(targetType));
// Get the RTT info object
JsName rtt = scope.declareName("rtt");
List<JsStatement> body = addToFn.getBody().getStatements();
JsInvocation callLookup = newInvocation(getRTTLookupMethodName(classElement));
if (hasTypeParameters(classElement)) {
JsName typeArgs = scope.declareName("typeArgs");
addToFn.getParameters().add(new JsParameter(typeArgs));
callLookup.getArguments().add(new JsNameRef(typeArgs));
}
JsStatement rttLookup = newVar((SourceInfo) null, rtt, callLookup);
body.add(rttLookup);
// store it.
JsExpression addToTypes =
newAssignment(
new JsArrayAccess(
newNameRef(targetType.makeRef(), "implementedTypes"),
newNameRef(rtt.makeRef(), "classKey")),
rtt.makeRef());
body.add(addToTypes.makeStmt());
InterfaceType superType = classElement.getSupertype();
if (superType != null && !superType.getElement().isObject()) {
ClassElement interfaceElement = superType.getElement();
JsInvocation callAddTo =
newInvocation(getRTTAddToMethodName(interfaceElement), targetType.makeRef());
if (hasTypeParameters(interfaceElement) && !superType.hasDynamicTypeArgs()) {
JsArrayLiteral superTypeArgs = new JsArrayLiteral();
List<? extends Type> typeParams = classElement.getTypeParameters();
for (Type arg : superType.getArguments()) {
superTypeArgs
.getExpressions()
.add(
buildTypeLookupExpression(
arg, typeParams, nameref(null, targetType.makeRef(), "typeArgs")));
}
callAddTo.getArguments().add(superTypeArgs);
}
body.add(callAddTo.makeStmt());
}
// Add the interfaces
for (InterfaceType interfaceType : classElement.getInterfaces()) {
ClassElement interfaceElement = interfaceType.getElement();
JsInvocation callAddTo =
call(null, getRTTAddToMethodName(interfaceElement), targetType.makeRef());
if (hasTypeParameters(interfaceElement) && !interfaceType.hasDynamicTypeArgs()) {
JsArrayLiteral interfaceTypeArgs = new JsArrayLiteral();
List<? extends Type> typeParams = classElement.getTypeParameters();
for (Type arg : interfaceType.getArguments()) {
interfaceTypeArgs
.getExpressions()
.add(
buildTypeLookupExpression(
arg, typeParams, nameref(null, targetType.makeRef(), "typeArgs")));
}
callAddTo.getArguments().add(interfaceTypeArgs);
}
body.add(callAddTo.makeStmt());
}
// Add the function statement
JsExpression fnDecl = newAssignment(getRTTAddToMethodName(classElement), addToFn);
globalBlock.getStatements().add(fnDecl.makeStmt());
}
