add line-running and noop cmd

This commit is contained in:
Luna 2019-06-06 23:28:15 -03:00
parent cb6008c385
commit 627b49b418
3 changed files with 48 additions and 3 deletions

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@ -1 +1 @@
noop noop;

28
scritcher/executer.py Normal file
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@ -0,0 +1,28 @@
import shlex
class InterpreterError(Exception):
pass
class Interpreter:
"""Interpreter for scritcher instructions/statements."""
def __init__(self):
pass
def _cmd_noop(self):
pass
def run(self, line: str):
"""Run a single line."""
print(f'running {line!r}')
args = shlex.split(line)
command = args[0]
try:
method = getattr(self, f'_cmd_{command}')
except AttributeError:
raise InterpreterError(f'Command {command!r} not found')
method(*args[1:])

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@ -1,11 +1,28 @@
import sys import sys
from pathlib import Path from pathlib import Path
from .executer import Interpreter, InterpreterError
def main(): def main():
try: try:
scri_path = Path(sys.argv[1]).resolve() scri_path = Path(sys.argv[1]).resolve()
except IndexError: except IndexError:
print(f'usage: {sys.argv[0]} path/to/file.scri') print(f'usage: {sys.argv[0]} path/to/file.scri')
return return
print('path', scri_path)
#run(scri_path) full_text = scri_path.read_text()
full_text = full_text.replace('\n', '')
stmts = full_text.split(';')
interp = Interpreter()
try:
for stmt in stmts:
if not stmt:
continue
interp.run(stmt)
except InterpreterError as err:
print(f'Interpreter error. {err.args[0]!r}')
print('OK')