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| import re | |
| from ..subprocess_code_interpreter import SubprocessCodeInterpreter | |
| class JavaScript(SubprocessCodeInterpreter): | |
| file_extension = 'js' | |
| proper_name = 'JavaScript' | |
| def __init__(self): | |
| super().__init__() | |
| self.start_cmd = 'node -i' | |
| def preprocess_code(self, code): | |
| return preprocess_javascript(code) | |
| def line_postprocessor(self, line): | |
| # Node's interactive REPL outputs a billion things | |
| # So we clean it up: | |
| if 'Welcome to Node.js' in line: | |
| return None | |
| if line.strip() in ['undefined', 'Type ".help" for more information.']: | |
| return None | |
| # Remove trailing ">"s | |
| line = re.sub(r'^\s*(>\s*)+', '', line) | |
| return line | |
| def detect_active_line(self, line): | |
| if '##active_line' in line: | |
| return int(line.split('##active_line')[1].split('##')[0]) | |
| return None | |
| def detect_end_of_execution(self, line): | |
| return '##end_of_execution##' in line | |
| def preprocess_javascript(code): | |
| """ | |
| Add active line markers | |
| Wrap in a try catch | |
| Add end of execution marker | |
| """ | |
| # Split code into lines | |
| lines = code.split('\n') | |
| processed_lines = [] | |
| for i, line in enumerate(lines, 1): | |
| # Add active line print | |
| processed_lines.append(f'console.log("##active_line{i}##");') | |
| processed_lines.append(line) | |
| # Join lines to form the processed code | |
| processed_code = '\n'.join(processed_lines) | |
| # Wrap in a try-catch and add end of execution marker | |
| processed_code = f""" | |
| try {{ | |
| {processed_code} | |
| }} catch (e) {{ | |
| console.log(e); | |
| }} | |
| console.log("##end_of_execution##"); | |
| """ | |
| return processed_code | |