WIP: 2510 Async list Comprehension by aaronclong · Pull Request #2513 · RustPython/RustPython
let mut loop_labels = vec![]; for generator in generators { if generator.is_async { unimplemented!("async for comprehensions"); } // if generator.is_async { // unimplemented!("async for comprehensions"); // }
// Setup for loop: self.emit(Instruction::SetupLoop);
// Get iterator / turn item into an iterator self.emit(Instruction::GetIter); }
let loop_block = self.new_block(); let after_block = self.new_block(); loop_labels.push((loop_block, after_block));
self.switch_to_block(loop_block); self.emit(Instruction::ForIter { target: after_block, }); if generator.is_async { let check_asynciter_block = self.new_block();
self.emit(Instruction::GetAIter); self.switch_to_block(loop_block); self.emit(Instruction::SetupExcept { handler: check_asynciter_block, }); self.emit(Instruction::GetANext); self.emit_constant(ConstantData::None); self.emit(Instruction::YieldFrom); self.compile_store(&generator.target)?; self.emit(Instruction::PopBlock);
} else { // Get iterator / turn item into an iterator self.emit(Instruction::GetIter);
self.compile_store(&generator.target)?; self.switch_to_block(loop_block); self.emit(Instruction::ForIter { target: after_block, });
self.compile_store(&generator.target)?; }
// Now evaluate the ifs: for if_condition in &generator.ifs {