# Copyright (c) 2013 Paul Tagliamonte # Copyright (c) 2013 Gergely Nagy # Copyright (c) 2013 James King # Copyright (c) 2013 Julien Danjou # Copyright (c) 2013 Konrad Hinsen # Copyright (c) 2013 Thom Neale # Copyright (c) 2013 Will Kahn-Greene # Copyright (c) 2013 Bob Tolbert # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER # DEALINGS IN THE SOFTWARE. from __future__ import print_function import argparse import code import ast import sys import astor.codegen import hy from hy.lex import LexException, PrematureEndOfInput, tokenize from hy.compiler import hy_compile, HyTypeError from hy.importer import (ast_compile, import_buffer_to_module, import_file_to_ast, import_file_to_hst) from hy.completer import completion from hy.macros import macro, require from hy.models.expression import HyExpression from hy.models.string import HyString from hy.models.symbol import HySymbol from hy._compat import builtins class HyQuitter(object): def __init__(self, name): self.name = name def __repr__(self): return "Use (%s) or Ctrl-D (i.e. EOF) to exit" % (self.name) __str__ = __repr__ def __call__(self, code=None): try: sys.stdin.close() except: pass raise SystemExit(code) builtins.quit = HyQuitter('quit') builtins.exit = HyQuitter('exit') def print_python_code(_ast): # astor cannot handle ast.Interactive, so disguise it as a module _ast_for_print = ast.Module() _ast_for_print.body = _ast.body print(astor.codegen.to_source(_ast_for_print)) class HyREPL(code.InteractiveConsole): def __init__(self, spy=False, locals=None, filename=""): self.spy = spy code.InteractiveConsole.__init__(self, locals=locals, filename=filename) def runsource(self, source, filename='', symbol='single'): global SIMPLE_TRACEBACKS try: tokens = tokenize(source) except PrematureEndOfInput: return True except LexException as e: if e.source is None: e.source = source e.filename = filename sys.stderr.write(str(e)) return False try: _ast = hy_compile(tokens, "__console__", root=ast.Interactive) if self.spy: print_python_code(_ast) code = ast_compile(_ast, filename, symbol) except HyTypeError as e: if e.source is None: e.source = source e.filename = filename if SIMPLE_TRACEBACKS: sys.stderr.write(str(e)) else: self.showtraceback() return False except Exception: self.showtraceback() return False self.runcode(code) return False @macro("koan") def koan_macro(): return HyExpression([HySymbol('print'), HyString(""" Ummon asked the head monk, "What sutra are you lecturing on?" "The Nirvana Sutra." "The Nirvana Sutra has the Four Virtues, hasn't it?" "It has." Ummon asked, picking up a cup, "How many virtues has this?" "None at all, " said the monk. "But ancient people said it had, didn't they?" said Ummon. "Whatdo you think of what they said?" Ummon struck the cup and asked, "You understand?" "No," said the monk. "Then," said Ummon, "You'd better go on with your lectures on the sutra." """)]) @macro("ideas") def ideas_macro(): return HyExpression([HySymbol('print'), HyString(""" => (import [sh [figlet]]) => (figlet "Hi, Hy!") _ _ _ _ _ _ | | | (_) | | | |_ _| | | |_| | | | |_| | | | | | | _ | |_ | _ | |_| |_| |_| |_|_( ) |_| |_|\__, (_) |/ |___/ ;;; string things (.join ", " ["what" "the" "heck"]) ;;; this one plays with command line bits (import [sh [cat grep]]) (-> (cat "/usr/share/dict/words") (grep "-E" "bro$")) ;;; filtering a list w/ a lambda (filter (lambda [x] (= (% x 2) 0)) (range 0 10)) ;;; swaggin' functional bits (Python rulez) (max (map (lambda [x] (len x)) ["hi" "my" "name" "is" "paul"])) """)]) require("hy.cmdline", "__console__") require("hy.cmdline", "__main__") SIMPLE_TRACEBACKS = True def run_command(source): try: import_buffer_to_module("__main__", source) except (HyTypeError, LexException) as e: if SIMPLE_TRACEBACKS: sys.stderr.write(str(e)) return 1 raise except Exception: raise return 0 def run_file(filename): from hy.importer import import_file_to_module try: import_file_to_module("__main__", filename) except (HyTypeError, LexException) as e: if SIMPLE_TRACEBACKS: sys.stderr.write(str(e)) return 1 raise except Exception: raise return 0 def run_repl(hr=None, spy=False): sys.ps1 = "=> " sys.ps2 = "... " with completion(): if not hr: hr = HyREPL(spy) hr.interact("{appname} {version}".format( appname=hy.__appname__, version=hy.__version__ )) return 0 def run_icommand(source, spy=False): hr = HyREPL(spy) hr.runsource(source, filename='', symbol='single') return run_repl(hr) USAGE = "%(prog)s [-h | -i cmd | -c cmd | file | -] [arg] ..." VERSION = "%(prog)s " + hy.__version__ EPILOG = """ file program read from script - program read from stdin [arg] ... arguments passed to program in sys.argv[1:] """ def cmdline_handler(scriptname, argv): parser = argparse.ArgumentParser( prog="hy", usage=USAGE, formatter_class=argparse.RawDescriptionHelpFormatter, epilog=EPILOG) parser.add_argument("-c", dest="command", help="program passed in as a string") parser.add_argument( "-i", dest="icommand", help="program passed in as a string, then stay in REPL") parser.add_argument("--spy", action="store_true", help="print equivalent Python code before executing") parser.add_argument("-v", action="version", version=VERSION) parser.add_argument("--show-tracebacks", action="store_true", help="show complete tracebacks for Hy exceptions") # this will contain the script/program name and any arguments for it. parser.add_argument('args', nargs=argparse.REMAINDER, help=argparse.SUPPRESS) # stash the hy exectuable in case we need it later # mimics Python sys.executable hy.executable = argv[0] options = parser.parse_args(argv[1:]) if options.show_tracebacks: global SIMPLE_TRACEBACKS SIMPLE_TRACEBACKS = False # reset sys.argv like Python sys.argv = options.args or [""] if options.command: # User did "hy -c ..." return run_command(options.command) if options.icommand: # User did "hy -i ..." return run_icommand(options.icommand, spy=options.spy) if options.args: if options.args[0] == "-": # Read the program from stdin return run_command(sys.stdin.read()) else: # User did "hy " try: return run_file(options.args[0]) except IOError as x: sys.stderr.write("hy: Can't open file '%s': [Errno %d] %s\n" % (x.filename, x.errno, x.strerror)) sys.exit(x.errno) # User did NOTHING! return run_repl(spy=options.spy) # entry point for cmd line script "hy" def hy_main(): sys.exit(cmdline_handler("hy", sys.argv)) # entry point for cmd line script "hyc" def hyc_main(): from hy.importer import write_hy_as_pyc parser = argparse.ArgumentParser(prog="hyc") parser.add_argument("files", metavar="FILE", nargs='+', help="file to compile") parser.add_argument("-v", action="version", version=VERSION) options = parser.parse_args(sys.argv[1:]) for file in options.files: try: write_hy_as_pyc(file) print("Compiling %s" % file) except IOError as x: sys.stderr.write("hyc: Can't open file '%s': [Errno %d] %s\n" % (x.filename, x.errno, x.strerror)) sys.exit(x.errno) # entry point for cmd line script "hy2py" def hy2py_main(): module_name = "" options = dict(prog="hy2py", usage="%(prog)s [options] FILE", formatter_class=argparse.RawDescriptionHelpFormatter) parser = argparse.ArgumentParser(**options) parser.add_argument("--with-source", "-s", action="store_true", help="Show the parsed source structure") parser.add_argument("--with-ast", "-a", action="store_true", help="Show the generated AST") parser.add_argument("--without-python", "-np", action="store_true", help=("Do not show the Python code generated " "from the AST")) parser.add_argument('args', nargs=argparse.REMAINDER, help=argparse.SUPPRESS) options = parser.parse_args(sys.argv[1:]) if not options.args: parser.exit(1, parser.format_help()) if options.with_source: hst = import_file_to_hst(options.args[0]) print(hst) print() print() _ast = import_file_to_ast(options.args[0], module_name) if options.with_ast: print(astor.dump(_ast)) print() print() if not options.without_python: print(astor.codegen.to_source(_ast)) parser.exit(0)