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| """ This script can be used to test the equivalence in parsing between | |
| rustpython and cpython. | |
| Usage example: | |
| $ python crawl_sourcecode.py crawl_sourcecode.py > cpython.txt | |
| $ cargo run crawl_sourcecode.py crawl_sourcecode.py > rustpython.txt | |
| $ diff cpython.txt rustpython.txt | |
| """ | |
| import ast | |
| import sys | |
| import symtable | |
| import dis | |
| filename = sys.argv[1] | |
| print('Crawling file:', filename) | |
| with open(filename, 'r') as f: | |
| source = f.read() | |
| t = ast.parse(source) | |
| print(t) | |
| shift = 3 | |
| def print_node(node, indent=0): | |
| indents = ' ' * indent | |
| if isinstance(node, ast.AST): | |
| lineno = 'row={}'.format(node.lineno) if hasattr(node, 'lineno') else '' | |
| print(indents, "NODE", node.__class__.__name__, lineno) | |
| for field in node._fields: | |
| print(indents,'-', field) | |
| f = getattr(node, field) | |
| if isinstance(f, list): | |
| for f2 in f: | |
| print_node(f2, indent=indent+shift) | |
| else: | |
| print_node(f, indent=indent+shift) | |
| else: | |
| print(indents, 'OBJ', node) | |
| print_node(t) | |
| # print(ast.dump(t)) | |
| flag_names = [ | |
| 'is_referenced', | |
| 'is_assigned', | |
| 'is_global', | |
| 'is_local', | |
| 'is_parameter', | |
| 'is_free', | |
| ] | |
| def print_table(table, indent=0): | |
| indents = ' ' * indent | |
| print(indents, 'table:', table.get_name()) | |
| print(indents, ' ', 'name:', table.get_name()) | |
| print(indents, ' ', 'type:', table.get_type()) | |
| print(indents, ' ', 'line:', table.get_lineno()) | |
| print(indents, ' ', 'identifiers:', table.get_identifiers()) | |
| print(indents, ' ', 'Syms:') | |
| for sym in table.get_symbols(): | |
| flags = [] | |
| for flag_name in flag_names: | |
| func = getattr(sym, flag_name) | |
| if func(): | |
| flags.append(flag_name) | |
| print(indents, ' sym:', sym.get_name(), 'flags:', ' '.join(flags)) | |
| if table.has_children(): | |
| print(indents, ' ', 'Child tables:') | |
| for child in table.get_children(): | |
| print_table(child, indent=indent+shift) | |
| table = symtable.symtable(source, 'a', 'exec') | |
| print_table(table) | |
| print() | |
| print('======== dis.dis ========') | |
| print() | |
| co = compile(source, filename, 'exec') | |
| dis.dis(co) |