83 lines
2.3 KiB
Python
Executable File
83 lines
2.3 KiB
Python
Executable File
#! /usr/bin/env python
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"""
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Usage:
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cent (-h|--help)
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cent -i FILE
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cent -c [-k|--keep-c] FILE
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Options:
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-h --help Print this help screen
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-i Run the interpreter
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-c Run the compiler
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-k --keep-c Keep the generated C file alongside the binary
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FILE The file to compile/interpret
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"""
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import os
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import subprocess
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import sys
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import tempfile
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from docopt import docopt
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from rply.errors import LexingError
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from centvrion.errors import CentvrionError
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from centvrion.lexer import Lexer
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from centvrion.parser import Parser
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from centvrion.ast_nodes import Program
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from centvrion.compiler.emitter import compile_program
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def main():
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args = docopt(__doc__)
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file_path = args["FILE"]
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with open(file_path, "r", encoding="utf-8") as file_pointer:
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program_text = file_pointer.read() + "\n"
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lexer = Lexer().get_lexer()
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parser = Parser()
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try:
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tokens = lexer.lex(program_text)
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program = parser.parse(tokens)
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except LexingError as e:
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pos = e.source_pos
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char = program_text[pos.idx] if pos.idx < len(program_text) else "?"
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sys.exit(f"CENTVRION error: Invalid character {char!r} at line {pos.lineno}, column {pos.colno}")
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if isinstance(program, Program):
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if args["-i"]:
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try:
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program.eval()
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except CentvrionError as e:
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sys.exit(f"CENTVRION error: {e}")
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else:
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c_source = compile_program(program)
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runtime_c = os.path.join(
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os.path.dirname(__file__),
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"centvrion", "compiler", "runtime", "cent_runtime.c"
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)
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out_path = os.path.splitext(file_path)[0]
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if args["--keep-c"]:
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tmp_path = out_path + ".c"
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with open(tmp_path, "w") as f:
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f.write(c_source)
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subprocess.run(
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["gcc", "-O2", tmp_path, runtime_c, "-o", out_path, "-lcurl", "-lmicrohttpd"],
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check=True,
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)
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else:
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with tempfile.NamedTemporaryFile(suffix=".c", delete=False, mode="w") as tmp:
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tmp.write(c_source)
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tmp_path = tmp.name
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try:
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subprocess.run(
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["gcc", "-O2", tmp_path, runtime_c, "-o", out_path, "-lcurl", "-lmicrohttpd"],
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check=True,
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)
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finally:
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os.unlink(tmp_path)
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else:
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raise Exception("Output not of type 'Program'", type(program))
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if __name__ == "__main__":
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main()
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