53 lines
1.4 KiB
Python
Executable File
53 lines
1.4 KiB
Python
Executable File
#! /home/nikolaj/.pyenv/shims/python
|
|
"""
|
|
Usage:
|
|
cent (-h|--help)
|
|
cent (-i|-c) FILE
|
|
|
|
Options:
|
|
-h --help Print this help screen
|
|
-i Run the interpreter
|
|
-c Run the compiler
|
|
FILE The file to compile/interpret
|
|
"""
|
|
import sys
|
|
|
|
from docopt import docopt
|
|
from rply.errors import LexingError
|
|
|
|
from centvrion.errors import CentvrionError
|
|
from centvrion.lexer import Lexer
|
|
from centvrion.parser import Parser
|
|
from centvrion.ast_nodes import Program
|
|
|
|
def main():
|
|
args = docopt(__doc__)
|
|
file_path = args["FILE"]
|
|
with open(file_path, "r", encoding="utf-8") as file_pointer:
|
|
program_text = file_pointer.read() + "\n"
|
|
|
|
lexer = Lexer().get_lexer()
|
|
parser = Parser()
|
|
|
|
try:
|
|
tokens = lexer.lex(program_text)
|
|
program = parser.parse(tokens)
|
|
except LexingError as e:
|
|
pos = e.source_pos
|
|
char = program_text[pos.idx] if pos.idx < len(program_text) else "?"
|
|
sys.exit(f"CENTVRION error: Invalid character {char!r} at line {pos.lineno}, column {pos.colno}")
|
|
|
|
if isinstance(program, Program):
|
|
if args["-i"]:
|
|
try:
|
|
program.eval()
|
|
except CentvrionError as e:
|
|
sys.exit(f"CENTVRION error: {e}")
|
|
else:
|
|
raise Exception("Compiler not implemented")
|
|
else:
|
|
raise Exception("Output not of type 'Program'", type(program))
|
|
|
|
if __name__ == "__main__":
|
|
main()
|