use of com.github.anba.es6draft.ast.scope.Name in project es6draft by anba.
the class BlockDeclarationInstantiationGenerator method generate.
private void generate(List<Declaration> declarations, HashSet<Name> instantiatedNames, Variable<ExecutionContext> cx, Variable<LexicalEnvironment<DeclarativeEnvironmentRecord>> env, InstructionVisitor mv) {
assert declarations.size() <= METHOD_LIMIT : declarations.size();
Variable<DeclarativeEnvironmentRecord> envRec = mv.newVariable("envRec", DeclarativeEnvironmentRecord.class);
Variable<FunctionObject> fo = null;
getEnvironmentRecord(env, envRec, mv);
/* steps 1-2 */
for (Declaration d : declarations) {
if (!(d instanceof HoistableDeclaration)) {
for (Name dn : BoundNames(d)) {
BindingOp<DeclarativeEnvironmentRecord> op = BindingOp.of(envRec, dn);
if (IsConstantDeclaration(d)) {
op.createImmutableBinding(envRec, dn, true, mv);
} else {
op.createMutableBinding(envRec, dn, false, mv);
}
}
} else {
Name fn = BoundName((HoistableDeclaration) d);
BindingOp<DeclarativeEnvironmentRecord> op = BindingOp.of(envRec, fn);
boolean alreadyDeclared = !instantiatedNames.add(fn);
assert !alreadyDeclared || d instanceof FunctionDeclaration;
if (!alreadyDeclared) {
op.createMutableBinding(envRec, fn, false, mv);
}
InstantiateFunctionObject(cx, env, d, mv);
if (fo == null) {
fo = mv.newVariable("fo", FunctionObject.class);
}
mv.store(fo);
if (!alreadyDeclared) {
op.initializeBinding(envRec, fn, fo, mv);
} else {
op.setMutableBinding(envRec, fn, fo, false, mv);
}
}
}
}
use of com.github.anba.es6draft.ast.scope.Name in project es6draft by anba.
the class ExpressionGenerator method visit.
/**
* 14.5.16 Runtime Semantics: Evaluation
*/
@Override
public ValType visit(ClassExpression node, CodeVisitor mv) {
/* steps 1-2 */
Name className = node.getIdentifier() != null ? node.getIdentifier().getName() : null;
/* steps 3-4 */
ClassDefinitionEvaluation(node, className, mv);
/* step 5 */
if (className != null) {
SetFunctionName(node, className, mv);
}
/* step 6 */
return ValType.Object;
}
use of com.github.anba.es6draft.ast.scope.Name in project es6draft by anba.
the class GlobalDeclarationInstantiationGenerator method generate.
private void generate(Script script, GlobalDeclInitVisitor mv) {
Variable<ExecutionContext> context = mv.getExecutionContext();
Variable<LexicalEnvironment<GlobalEnvironmentRecord>> env = mv.newVariable("globalEnv", LexicalEnvironment.class).uncheckedCast();
Variable<GlobalEnvironmentRecord> envRec = mv.newVariable("envRec", GlobalEnvironmentRecord.class);
Variable<FunctionObject> fo = null;
/* steps 1-2 */
getLexicalEnvironment(context, env, mv);
getEnvironmentRecord(env, envRec, mv);
/* step 3 */
HashSet<Name> lexNames = new HashSet<>();
/* step 4 */
HashSet<Name> varNames = new HashSet<>();
// Iterate over declarations to be able to emit line-info entries.
for (Declaration d : LexicallyScopedDeclarations(script)) {
assert !(d instanceof HoistableDeclaration);
for (Name name : BoundNames(d)) {
if (lexNames.add(name)) {
canDeclareLexicalScopedOrThrow(context, envRec, d, name, mv);
}
}
}
// Iterate over declarations to be able to emit line-info entries.
for (StatementListItem item : VarScopedDeclarations(script)) {
if (item instanceof VariableStatement) {
for (VariableDeclaration vd : ((VariableStatement) item).getElements()) {
for (Name name : BoundNames(vd)) {
if (varNames.add(name)) {
canDeclareVarScopedOrThrow(context, envRec, vd, name, mv);
}
}
}
} else {
HoistableDeclaration d = (HoistableDeclaration) item;
Name name = BoundName(d);
if (varNames.add(name)) {
canDeclareVarScopedOrThrow(context, envRec, d, name, mv);
}
}
}
/* step 7 */
List<StatementListItem> varDeclarations = VarScopedDeclarations(script);
/* step 8 */
ArrayDeque<HoistableDeclaration> functionsToInitialize = new ArrayDeque<>();
/* step 9 */
HashSet<Name> declaredFunctionNames = new HashSet<>();
/* step 10 */
for (StatementListItem item : reverse(varDeclarations)) {
if (item instanceof HoistableDeclaration) {
HoistableDeclaration d = (HoistableDeclaration) item;
Name fn = BoundName(d);
if (declaredFunctionNames.add(fn)) {
canDeclareGlobalFunctionOrThrow(context, envRec, d, fn, mv);
functionsToInitialize.addFirst(d);
}
}
}
if (!functionsToInitialize.isEmpty()) {
fo = mv.newVariable("fo", FunctionObject.class);
}
/* step 11 */
LinkedHashMap<Name, VariableDeclaration> declaredVarNames = new LinkedHashMap<>();
/* step 12 */
for (StatementListItem d : varDeclarations) {
if (d instanceof VariableStatement) {
for (VariableDeclaration vd : ((VariableStatement) d).getElements()) {
for (Name vn : BoundNames(vd)) {
if (!declaredFunctionNames.contains(vn)) {
canDeclareGlobalVarOrThrow(context, envRec, vd, vn, mv);
declaredVarNames.put(vn, vd);
}
}
}
}
}
// ES2016: Block-scoped global function declarations
if (hasBlockFunctions(script)) {
int idCounter = 0;
HashSet<Name> declaredFunctionOrVarNames = new HashSet<>();
declaredFunctionOrVarNames.addAll(declaredFunctionNames);
declaredFunctionOrVarNames.addAll(declaredVarNames.keySet());
for (FunctionDeclaration f : script.getScope().blockFunctions()) {
Name fn = BoundName(f);
Jump next = new Jump();
// Runtime check always required for global block-level function declarations.
f.setLegacyBlockScopeId(++idCounter);
// FIXME: spec issue - avoid (observable!) duplicate checks for same name?
// FIXME: spec issue - property creation order important?
canDeclareGlobalFunction(envRec, f, fn, next, mv);
setLegacyBlockFunction(context, f, mv);
if (declaredFunctionOrVarNames.add(fn)) {
createGlobalFunctionBinding(envRec, f, fn, false, mv);
}
mv.mark(next);
}
}
/* step 15 */
List<Declaration> lexDeclarations = LexicallyScopedDeclarations(script);
/* step 16 */
for (Declaration d : lexDeclarations) {
assert !(d instanceof HoistableDeclaration);
mv.lineInfo(d);
for (Name dn : BoundNames(d)) {
BindingOp<GlobalEnvironmentRecord> op = BindingOp.of(envRec, dn);
if (d.isConstDeclaration()) {
op.createImmutableBinding(envRec, dn, true, mv);
} else {
op.createMutableBinding(envRec, dn, false, mv);
}
}
}
/* step 17 */
for (HoistableDeclaration f : functionsToInitialize) {
Name fn = BoundName(f);
InstantiateFunctionObject(context, env, f, mv);
mv.store(fo);
createGlobalFunctionBinding(envRec, f, fn, fo, false, mv);
}
/* step 18 */
for (Map.Entry<Name, VariableDeclaration> e : declaredVarNames.entrySet()) {
createGlobalVarBinding(envRec, e.getValue(), e.getKey(), false, mv);
}
/* step 19 */
mv._return();
}
use of com.github.anba.es6draft.ast.scope.Name in project es6draft by anba.
the class StaticSemantics method ExportEntries.
/**
* 15.2.1.7 Static Semantics: ExportEntries<br>
* 15.2.3.5 Static Semantics: ExportEntries
*
* @param node
* the module node
* @return the list of export entries
*/
public static List<ExportEntry> ExportEntries(Module node) {
ArrayList<ExportEntry> entries = new ArrayList<>();
for (ModuleItem item : node.getStatements()) {
if (item instanceof ExportDeclaration) {
ExportDeclaration exportDecl = (ExportDeclaration) item;
switch(exportDecl.getType()) {
case All:
{
String module = exportDecl.getModuleSpecifier();
entries.add(new ExportEntry(item, module, "*", null, null));
break;
}
case External:
{
String module = exportDecl.getModuleSpecifier();
ExportEntriesForModule(exportDecl.getExportClause(), module, entries);
break;
}
case Local:
ExportEntriesForModule(exportDecl.getExportClause(), null, entries);
break;
case Variable:
for (Name name : BoundNames(exportDecl.getVariableStatement())) {
String id = name.getIdentifier();
entries.add(new ExportEntry(item, null, null, id, id));
}
break;
case Declaration:
for (Name name : BoundNames(exportDecl.getDeclaration())) {
String id = name.getIdentifier();
entries.add(new ExportEntry(item, null, null, id, id));
}
break;
case DefaultHoistableDeclaration:
{
Name localName = BoundName(exportDecl.getHoistableDeclaration());
entries.add(new ExportEntry(item, null, null, localName.getIdentifier(), "default"));
break;
}
case DefaultClassDeclaration:
{
Name localName = BoundName(exportDecl.getClassDeclaration());
entries.add(new ExportEntry(item, null, null, localName.getIdentifier(), "default"));
break;
}
case DefaultExpression:
{
Name localName = BoundName(exportDecl.getExpression().getBinding());
entries.add(new ExportEntry(item, null, null, localName.getIdentifier(), "default"));
break;
}
default:
throw new AssertionError();
}
}
}
return entries;
}
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