@Override public void visit(InstanceOfExpr expr) { expr.getExpr().acceptVisitor(this); }
@Override public void visit(InstanceOfExpr expr) { try { output.writeByte(22); writeExpr(expr.getExpr()); output.writeInt(symbolTable.lookup(expr.getType().toString())); } catch (IOException e) { throw new IOExceptionWrapper(e); } }
@Override public void visit(InstanceOfExpr expr) { pushLocation(expr.getLocation()); try { expr.getExpr().acceptVisitor(this); expr.setExpr(resultExpr); resultExpr = expr; } finally { popLocation(); } }
@Override public void visit(InstanceOfExpr expr) { writer.print("instanceof("); expr.getExpr().acceptVisitor(this); writer.print(", ").print(names.forSupertypeFunction(expr.getType())).print(")"); }
private boolean isSideEffectFree(Expr expr) { if (expr == null) { return true; } if (expr instanceof VariableExpr || expr instanceof ConstantExpr) { return true; } if (expr instanceof BinaryExpr) { BinaryExpr binary = (BinaryExpr) expr; return isSideEffectFree(binary.getFirstOperand()) && isSideEffectFree(binary.getSecondOperand()); } if (expr instanceof UnaryExpr) { return isSideEffectFree(((UnaryExpr) expr).getOperand()); } if (expr instanceof InstanceOfExpr) { return isSideEffectFree(((InstanceOfExpr) expr).getExpr()); } if (expr instanceof PrimitiveCastExpr) { return isSideEffectFree(((PrimitiveCastExpr) expr).getValue()); } if (expr instanceof NewExpr) { return true; } return false; }
@Override public void visit(InstanceOfExpr expr) { classGenerator.getClassPointer(expr.getType()); accept(expr.getExpr()); WasmBlock block = new WasmBlock(false); block.setType(WasmType.INT32); block.setLocation(expr.getLocation()); WasmLocal objectVar = getTemporary(WasmType.INT32); block.getBody().add(new WasmSetLocal(objectVar, result)); WasmBranch ifNull = new WasmBranch(new WasmIntBinary(WasmIntType.INT32, WasmIntBinaryOperation.EQ, new WasmGetLocal(objectVar), new WasmInt32Constant(0)), block); ifNull.setResult(new WasmInt32Constant(0)); block.getBody().add(new WasmDrop(ifNull)); WasmCall supertypeCall = new WasmCall(context.names.forSupertypeFunction(expr.getType())); WasmExpression classRef = new WasmLoadInt32(4, result, WasmInt32Subtype.INT32); classRef = new WasmIntBinary(WasmIntType.INT32, WasmIntBinaryOperation.SHL, classRef, new WasmInt32Constant(3)); supertypeCall.getArguments().add(classRef); block.getBody().add(supertypeCall); result = block; }
@Override public void visit(InstanceOfExpr expr) { expr.getExpr().acceptVisitor(this); }
@Override public void visit(InstanceOfExpr expr) { try { output.writeByte(22); writeExpr(expr.getExpr()); output.writeInt(symbolTable.lookup(expr.getType().toString())); } catch (IOException e) { throw new IOExceptionWrapper(e); } }
@Override public void visit(InstanceOfExpr expr) { pushLocation(expr.getLocation()); try { expr.getExpr().acceptVisitor(this); expr.setExpr(resultExpr); resultExpr = expr; } finally { popLocation(); } }
@Override public void visit(InstanceOfExpr expr) { accept(expr.getExpr());