1 | """
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2 | Wrapper for Python.asdl.
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3 | """
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4 |
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5 | import os
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6 | import sys
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7 |
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8 | from asdl import py_meta
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9 | from asdl import asdl_ as asdl
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10 |
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11 | # Dummy types for now
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12 | class Identifier:
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13 | pass
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14 |
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15 | class Bytes:
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16 | pass
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17 |
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18 | class PyObject:
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19 | pass
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20 |
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21 | class Constant:
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22 | pass
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23 |
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24 | class Singleton:
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25 | pass
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26 |
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27 |
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28 | # TODO: Fill these in:
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29 | #
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30 | # Num(object n) -- a number as a PyObject.
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31 | # Bytes(bytes s)
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32 | # Constant(constant value)
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33 | # NameConstant(singleton value)
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34 | #
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35 | # singleton: None, True or False
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36 | # constant can be None, whereas None means "no value" for object.
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37 | #
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38 | # Hm do I want an LST? Then it shouldn't have these typed values? That
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39 | # comes later?
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40 | #
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41 | # identifier: this one is used a lot. Why not string?
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42 |
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43 | def _ParseAndMakeTypes(schema_path, root):
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44 | module = asdl.parse(schema_path)
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45 |
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46 | app_types = {
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47 | 'identifier': asdl.UserType(Identifier),
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48 | 'bytes': asdl.UserType(Bytes),
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49 | 'object': asdl.UserType(PyObject),
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50 | 'constant': asdl.UserType(Constant),
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51 | 'singleton': asdl.UserType(Singleton),
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52 | }
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53 |
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54 | # Check for type errors
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55 | if not asdl.check(module, app_types):
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56 | raise AssertionError('ASDL file is invalid')
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57 | py_meta.MakeTypes(module, root, app_types)
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58 |
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59 |
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60 | bin_dir = os.path.dirname(os.path.abspath(sys.argv[0])) # ~/git/oil/bin
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61 | schema_path = os.path.join(bin_dir, '../foil/Python.asdl') # ~/git/oil/osh
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62 |
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63 | root = sys.modules[__name__]
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64 |
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65 | _ParseAndMakeTypes(schema_path, root)
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