mirror of
https://gitlab.com/niansa/pilang.git
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90 lines
2.9 KiB
Python
Executable file
90 lines
2.9 KiB
Python
Executable file
#! /usr/bin/env python3
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"""
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This file is part of pilang.
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pilang is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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pilang is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with pilang. If not, see <https://www.gnu.org/licenses/>.
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"""
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import sys
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from rtypes import goto
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from intern import main_class
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if len(sys.argv) == 1: # CLI loop
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# Show copyright note
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print("pilang Copyright (C) 2020 niansa")
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print("This program comes with ABSOLUTELY NO WARRANTY; for details type `warranty'.")
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print("This is free software, and you are welcome to redistribute it")
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print("under certain conditions; type `license' for details.")
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print("")
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# Initialise interpreter
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main = main_class()
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while True:
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print(">>> ", end="", flush=True)
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try:
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commandstr = input()
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except EOFError:
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print()
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sys.exit(0)
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except KeyboardInterrupt:
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print()
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continue
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try:
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res = main.get_rstring(main.run_command(commandstr), errorsonly=False)
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except goto:
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res = "Goto is not possible in CLI mode"
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except RuntimeError as error:
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res = error.args[0]
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if res != None:
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print(res)
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else: # File execution loop
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# Initialise interpreter
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main = main_class()
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# Parse argv
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if sys.argv[1] == "-c":
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del sys.argv[1]
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if len(sys.argv[1]) == 1:
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sys.exit(1)
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scriptfile = sys.argv[1]
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del sys.argv[0]
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# Save file line-by-line into list
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with open(scriptfile, mode="r") as f:
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lines = []
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for line in f:
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if line[-1] == "\n":
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line = line[:-1]
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lines.append(line)
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# Execute file
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linenum = 0
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markers = {"start": 0}
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while True:
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try:
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cmdres = main.get_rstring(main.run_command(lines[linenum]), errorsonly=True)
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linenum += 1
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except RuntimeError as error:
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print(f"In line {linenum + 1}:", error.args[0])
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sys.exit(1)
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except goto as gotoinstr:
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if gotoinstr.define:
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markers[gotoinstr.marker] = linenum + 1
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linenum += 1
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continue
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else:
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try:
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linenum = markers[gotoinstr.marker]
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except KeyError:
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print("Invalid goto instruction (critical)")
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sys.exit(3)
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except IndexError:
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break
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if cmdres:
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print(cmdres)
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