226 lines
6.8 KiB
Python
226 lines
6.8 KiB
Python
# Copyright (c) 2013 Paul Tagliamonte <paultag@debian.org>
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# Copyright (c) 2013, 2014 Bob Tolbert <bob@tolbert.org>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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from hy.compiler import hy_compile, HyTypeError
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from hy.models import HyObject, replace_hy_obj
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from hy.lex import tokenize, LexException
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from hy.errors import HyIOError
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from io import open
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import marshal
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import imp
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import sys
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import ast
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import os
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import __future__
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from hy._compat import PY3, PY33, MAGIC, builtins, long_type, wr_long
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from hy._compat import string_types
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def ast_compile(ast, filename, mode):
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"""Compile AST.
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Like Python's compile, but with some special flags."""
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flags = (__future__.CO_FUTURE_DIVISION |
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__future__.CO_FUTURE_PRINT_FUNCTION)
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return compile(ast, filename, mode, flags)
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def import_buffer_to_hst(buf):
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"""Import content from buf and return an Hy AST."""
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return tokenize(buf + "\n")
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def import_file_to_hst(fpath):
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"""Import content from fpath and return an Hy AST."""
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try:
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with open(fpath, 'r', encoding='utf-8') as f:
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return import_buffer_to_hst(f.read())
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except IOError as e:
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raise HyIOError(e.errno, e.strerror, e.filename)
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def import_buffer_to_ast(buf, module_name):
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""" Import content from buf and return a Python AST."""
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return hy_compile(import_buffer_to_hst(buf), module_name)
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def import_file_to_ast(fpath, module_name):
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"""Import content from fpath and return a Python AST."""
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return hy_compile(import_file_to_hst(fpath), module_name)
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def import_file_to_module(module_name, fpath):
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"""Import content from fpath and puts it into a Python module.
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Returns the module."""
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try:
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_ast = import_file_to_ast(fpath, module_name)
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mod = imp.new_module(module_name)
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mod.__file__ = fpath
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eval(ast_compile(_ast, fpath, "exec"), mod.__dict__)
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except (HyTypeError, LexException) as e:
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if e.source is None:
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with open(fpath, 'rt') as fp:
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e.source = fp.read()
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e.filename = fpath
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raise
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except Exception:
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sys.modules.pop(module_name, None)
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raise
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return mod
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def import_buffer_to_module(module_name, buf):
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try:
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_ast = import_buffer_to_ast(buf, module_name)
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mod = imp.new_module(module_name)
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eval(ast_compile(_ast, "", "exec"), mod.__dict__)
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except (HyTypeError, LexException) as e:
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if e.source is None:
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e.source = buf
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e.filename = '<stdin>'
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raise
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return mod
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def hy_eval(hytree, namespace, module_name):
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foo = HyObject()
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foo.start_line = 0
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foo.end_line = 0
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foo.start_column = 0
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foo.end_column = 0
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replace_hy_obj(hytree, foo)
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if not isinstance(module_name, string_types):
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raise HyTypeError(foo, "Module name must be a string")
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_ast, expr = hy_compile(hytree, module_name, get_expr=True)
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# Spoof the positions in the generated ast...
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for node in ast.walk(_ast):
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node.lineno = 1
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node.col_offset = 1
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for node in ast.walk(expr):
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node.lineno = 1
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node.col_offset = 1
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if not isinstance(namespace, dict):
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raise HyTypeError(foo, "Globals must be a dictionary")
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# Two-step eval: eval() the body of the exec call
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eval(ast_compile(_ast, "<eval_body>", "exec"), namespace)
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# Then eval the expression context and return that
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return eval(ast_compile(expr, "<eval>", "eval"), namespace)
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def write_hy_as_pyc(fname):
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with open(fname, 'U') as f:
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try:
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st = os.fstat(f.fileno())
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except AttributeError:
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st = os.stat(fname)
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timestamp = long_type(st.st_mtime)
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_ast = import_file_to_ast(fname,
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os.path.basename(os.path.splitext(fname)[0]))
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code = ast_compile(_ast, fname, "exec")
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cfile = "%s.pyc" % fname[:-len(".hy")]
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open_ = builtins.open
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with open_(cfile, 'wb') as fc:
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if PY3:
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fc.write(b'\0\0\0\0')
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else:
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fc.write('\0\0\0\0')
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wr_long(fc, timestamp)
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if PY33:
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wr_long(fc, st.st_size)
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marshal.dump(code, fc)
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fc.flush()
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fc.seek(0, 0)
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fc.write(MAGIC)
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class MetaLoader(object):
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def __init__(self, path):
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self.path = path
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def is_package(self, fullname):
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dirpath = "/".join(fullname.split("."))
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for pth in sys.path:
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pth = os.path.abspath(pth)
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composed_path = "%s/%s/__init__.hy" % (pth, dirpath)
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if os.path.exists(composed_path):
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return True
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return False
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def load_module(self, fullname):
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if fullname in sys.modules:
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return sys.modules[fullname]
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if not self.path:
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return
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sys.modules[fullname] = None
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mod = import_file_to_module(fullname,
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self.path)
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ispkg = self.is_package(fullname)
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mod.__file__ = self.path
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mod.__loader__ = self
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mod.__name__ = fullname
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if ispkg:
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mod.__path__ = []
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mod.__package__ = fullname
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else:
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mod.__package__ = fullname.rpartition('.')[0]
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sys.modules[fullname] = mod
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return mod
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class MetaImporter(object):
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def find_on_path(self, fullname):
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fls = ["%s/__init__.hy", "%s.hy"]
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dirpath = "/".join(fullname.split("."))
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for pth in sys.path:
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pth = os.path.abspath(pth)
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for fp in fls:
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composed_path = fp % ("%s/%s" % (pth, dirpath))
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if os.path.exists(composed_path):
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return composed_path
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def find_module(self, fullname, path=None):
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path = self.find_on_path(fullname)
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if path:
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return MetaLoader(path)
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sys.meta_path.insert(0, MetaImporter())
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sys.path.insert(0, "")
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