| // Copyright 2015 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/interpreter/bytecode-generator.h" |
| |
| #include <stack> |
| |
| #include "src/compiler.h" |
| #include "src/objects.h" |
| #include "src/scopes.h" |
| #include "src/token.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| BytecodeGenerator::BytecodeGenerator(Isolate* isolate, Zone* zone) |
| : builder_(isolate) { |
| InitializeAstVisitor(isolate, zone); |
| } |
| |
| |
| BytecodeGenerator::~BytecodeGenerator() {} |
| |
| |
| Handle<BytecodeArray> BytecodeGenerator::MakeBytecode(CompilationInfo* info) { |
| set_scope(info->scope()); |
| |
| // This a temporary guard (oth). |
| DCHECK(scope()->is_function_scope()); |
| |
| builder().set_locals_count(scope()->num_stack_slots()); |
| |
| // Visit implicit declaration of the function name. |
| if (scope()->is_function_scope() && scope()->function() != NULL) { |
| VisitVariableDeclaration(scope()->function()); |
| } |
| |
| // Visit declarations within the function scope. |
| VisitDeclarations(scope()->declarations()); |
| |
| // Visit statements in the function body. |
| VisitStatements(info->function()->body()); |
| |
| set_scope(nullptr); |
| return builder_.ToBytecodeArray(); |
| } |
| |
| |
| void BytecodeGenerator::VisitBlock(Block* node) { |
| if (node->scope() == NULL) { |
| // Visit statements in the same scope, no declarations. |
| VisitStatements(node->statements()); |
| } else { |
| // Visit declarations and statements in a block scope. |
| if (node->scope()->ContextLocalCount() > 0) { |
| UNIMPLEMENTED(); |
| } else { |
| VisitDeclarations(node->scope()->declarations()); |
| VisitStatements(node->statements()); |
| } |
| } |
| } |
| |
| |
| void BytecodeGenerator::VisitVariableDeclaration(VariableDeclaration* decl) { |
| Variable* variable = decl->proxy()->var(); |
| switch (variable->location()) { |
| case VariableLocation::GLOBAL: |
| case VariableLocation::UNALLOCATED: |
| UNIMPLEMENTED(); |
| break; |
| case VariableLocation::PARAMETER: |
| UNIMPLEMENTED(); |
| break; |
| case VariableLocation::LOCAL: |
| // Details stored in scope, i.e. variable index. |
| break; |
| case VariableLocation::CONTEXT: |
| case VariableLocation::LOOKUP: |
| UNIMPLEMENTED(); |
| break; |
| } |
| } |
| |
| |
| void BytecodeGenerator::VisitFunctionDeclaration(FunctionDeclaration* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitImportDeclaration(ImportDeclaration* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitExportDeclaration(ExportDeclaration* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitExpressionStatement(ExpressionStatement* stmt) { |
| Visit(stmt->expression()); |
| } |
| |
| |
| void BytecodeGenerator::VisitEmptyStatement(EmptyStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitIfStatement(IfStatement* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitContinueStatement(ContinueStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitBreakStatement(BreakStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitReturnStatement(ReturnStatement* node) { |
| Visit(node->expression()); |
| builder().Return(); |
| } |
| |
| |
| void BytecodeGenerator::VisitWithStatement(WithStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitSwitchStatement(SwitchStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitCaseClause(CaseClause* clause) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitDoWhileStatement(DoWhileStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitWhileStatement(WhileStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitForStatement(ForStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitForInStatement(ForInStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitForOfStatement(ForOfStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitTryCatchStatement(TryCatchStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitTryFinallyStatement(TryFinallyStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitDebuggerStatement(DebuggerStatement* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitFunctionLiteral(FunctionLiteral* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitClassLiteral(ClassLiteral* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitNativeFunctionLiteral( |
| NativeFunctionLiteral* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitConditional(Conditional* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitLiteral(Literal* expr) { |
| if (expr->IsPropertyName()) { |
| UNIMPLEMENTED(); |
| } |
| |
| Handle<Object> value = expr->value(); |
| if (value->IsSmi()) { |
| builder().LoadLiteral(Smi::cast(*value)); |
| } else if (value->IsUndefined()) { |
| builder().LoadUndefined(); |
| } else if (value->IsTrue()) { |
| builder().LoadTrue(); |
| } else if (value->IsFalse()) { |
| builder().LoadFalse(); |
| } else if (value->IsNull()) { |
| builder().LoadNull(); |
| } else if (value->IsTheHole()) { |
| builder().LoadTheHole(); |
| } else { |
| UNIMPLEMENTED(); |
| } |
| } |
| |
| |
| void BytecodeGenerator::VisitRegExpLiteral(RegExpLiteral* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitObjectLiteral(ObjectLiteral* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitArrayLiteral(ArrayLiteral* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitVariableProxy(VariableProxy* proxy) { |
| Variable* variable = proxy->var(); |
| switch (variable->location()) { |
| case VariableLocation::LOCAL: { |
| Register source(variable->index()); |
| builder().LoadAccumulatorWithRegister(source); |
| break; |
| } |
| case VariableLocation::GLOBAL: |
| case VariableLocation::UNALLOCATED: |
| case VariableLocation::PARAMETER: |
| case VariableLocation::CONTEXT: |
| case VariableLocation::LOOKUP: |
| UNIMPLEMENTED(); |
| } |
| } |
| |
| |
| void BytecodeGenerator::VisitAssignment(Assignment* expr) { |
| DCHECK(expr->target()->IsValidReferenceExpression()); |
| |
| // Left-hand side can only be a property, a global or a variable slot. |
| Property* property = expr->target()->AsProperty(); |
| LhsKind assign_type = Property::GetAssignType(property); |
| |
| DCHECK(!expr->is_compound()); |
| Visit(expr->value()); |
| |
| switch (assign_type) { |
| case VARIABLE: { |
| Variable* variable = expr->target()->AsVariableProxy()->var(); |
| DCHECK(variable->location() == VariableLocation::LOCAL); |
| Register destination(variable->index()); |
| builder().StoreAccumulatorInRegister(destination); |
| break; |
| } |
| case NAMED_PROPERTY: |
| case KEYED_PROPERTY: |
| case NAMED_SUPER_PROPERTY: |
| case KEYED_SUPER_PROPERTY: |
| UNIMPLEMENTED(); |
| } |
| } |
| |
| |
| void BytecodeGenerator::VisitYield(Yield* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitThrow(Throw* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitProperty(Property* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitCall(Call* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitCallNew(CallNew* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitCallRuntime(CallRuntime* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitUnaryOperation(UnaryOperation* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitCountOperation(CountOperation* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitBinaryOperation(BinaryOperation* binop) { |
| switch (binop->op()) { |
| case Token::COMMA: |
| case Token::OR: |
| case Token::AND: |
| UNIMPLEMENTED(); |
| break; |
| default: |
| VisitArithmeticExpression(binop); |
| break; |
| } |
| } |
| |
| |
| void BytecodeGenerator::VisitCompareOperation(CompareOperation* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitSpread(Spread* node) { UNIMPLEMENTED(); } |
| |
| |
| void BytecodeGenerator::VisitThisFunction(ThisFunction* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitSuperCallReference(SuperCallReference* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitSuperPropertyReference( |
| SuperPropertyReference* node) { |
| UNIMPLEMENTED(); |
| } |
| |
| |
| void BytecodeGenerator::VisitArithmeticExpression(BinaryOperation* binop) { |
| Token::Value op = binop->op(); |
| Expression* left = binop->left(); |
| Expression* right = binop->right(); |
| |
| TemporaryRegisterScope temporary_register_scope(&builder_); |
| Register temporary = temporary_register_scope.NewRegister(); |
| |
| Visit(left); |
| builder().StoreAccumulatorInRegister(temporary); |
| Visit(right); |
| builder().BinaryOperation(op, temporary); |
| } |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |