| 1 | #!/usr/bin/env python2
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| 2 | """
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| 3 | asdl_main.py - Generate Python and C from ASDL schemas.
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| 4 | """
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| 5 | from __future__ import print_function
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| 6 |
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| 7 | import optparse
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| 8 | import os
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| 9 | import sys
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| 10 |
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| 11 | from asdl import front_end
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| 12 | from asdl import gen_cpp
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| 13 | from asdl import gen_python
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| 14 | from asdl import metrics
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| 15 | from asdl.util import log
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| 16 |
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| 17 | from typing import Dict
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| 18 | from typing import Any
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| 19 | from typing import List
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| 20 |
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| 21 | ARG_0 = os.path.basename(sys.argv[0])
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| 22 |
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| 23 |
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| 24 | def Options():
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| 25 | # type: () -> Any
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| 26 | """Returns an option parser instance."""
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| 27 |
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| 28 | p = optparse.OptionParser()
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| 29 | p.add_option('--no-pretty-print-methods',
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| 30 | dest='pretty_print_methods',
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| 31 | action='store_false',
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| 32 | default=True,
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| 33 | help='Whether to generate pretty printing methods')
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| 34 |
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| 35 | # Control Python constructors
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| 36 |
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| 37 | # for hnode.asdl
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| 38 | p.add_option('--py-init-N',
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| 39 | dest='py_init_n',
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| 40 | action='store_true',
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| 41 | default=False,
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| 42 | help='Generate Python __init__ that requires every field')
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| 43 |
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| 44 | # The default, which matches C++
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| 45 | p.add_option(
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| 46 | '--init-zero-N',
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| 47 | dest='init_zero_n',
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| 48 | action='store_true',
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| 49 | default=True,
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| 50 | help='Generate 0 arg and N arg constructors, in Python and C++')
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| 51 |
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| 52 | p.add_option('--abbrev-module',
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| 53 | dest='abbrev_module',
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| 54 | default=None,
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| 55 | help='Import this module to find abbreviations')
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| 56 |
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| 57 | return p
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| 58 |
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| 59 |
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| 60 | class Abbrev(object):
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| 61 | """A struct for convenience"""
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| 62 |
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| 63 | def __init__(self, module=None, ns=None, mod_entries=None):
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| 64 | # type: (str, str, List[str]) -> None
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| 65 | self.module = module
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| 66 | self.ns = ns
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| 67 | self.mod_entries = mod_entries
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| 68 |
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| 69 |
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| 70 | def main(argv):
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| 71 | # type: (List[str]) -> None
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| 72 | o = Options()
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| 73 | opts, argv = o.parse_args(argv)
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| 74 |
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| 75 | try:
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| 76 | action = argv[1]
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| 77 | except IndexError:
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| 78 | raise RuntimeError('Action required')
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| 79 |
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| 80 | try:
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| 81 | schema_path = argv[2]
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| 82 | except IndexError:
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| 83 | raise RuntimeError('Schema path required')
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| 84 |
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| 85 | schema_filename = os.path.basename(schema_path)
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| 86 |
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| 87 | abbrev = Abbrev()
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| 88 | abbrev.module = opts.abbrev_module
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| 89 | if opts.abbrev_module:
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| 90 | # Weird Python rule for importing: fromlist needs to be non-empty.
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| 91 | abbrev_mod = __import__(opts.abbrev_module, fromlist=['.'])
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| 92 | abbrev.mod_entries = dir(abbrev_mod)
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| 93 | abbrev.ns = opts.abbrev_module.split('.')[-1] # e.g. syntax_abbrev
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| 94 | else:
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| 95 | abbrev_mod = None
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| 96 | abbrev.mod_entries = []
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| 97 | abbrev.ns = None
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| 98 |
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| 99 | if action == 'metrics': # Sum type metrics
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| 100 | with open(schema_path) as f:
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| 101 | schema_ast, _ = front_end.LoadSchema(f)
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| 102 |
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| 103 | v = metrics.MetricsVisitor(sys.stdout)
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| 104 | v.VisitModule(schema_ast)
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| 105 |
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| 106 | elif action == 'closure': # count all types that command_t references
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| 107 | type_name = argv[3]
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| 108 | with open(schema_path) as f:
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| 109 | schema_ast, type_lookup = front_end.LoadSchema(f)
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| 110 |
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| 111 | seen = {} # type: Dict[str, bool]
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| 112 | c = metrics.ClosureWalk(type_lookup, seen)
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| 113 | c.DoModule(schema_ast, type_name)
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| 114 | for name in sorted(seen):
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| 115 | print(name)
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| 116 | log('SHARED (%d): %s', len(c.shared), ' '.join(sorted(c.shared)))
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| 117 |
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| 118 | elif action == 'c': # Generate C code for the lexer
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| 119 | with open(schema_path) as f:
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| 120 | schema_ast, _ = front_end.LoadSchema(f)
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| 121 |
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| 122 | v0 = gen_cpp.CEnumVisitor(sys.stdout)
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| 123 | v0.VisitModule(schema_ast)
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| 124 |
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| 125 | elif action == 'cpp': # Generate C++ code for ASDL schemas
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| 126 | out_prefix = argv[3]
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| 127 | try:
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| 128 | debug_info_path = argv[4]
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| 129 | except IndexError:
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| 130 | debug_info_path = None
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| 131 |
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| 132 | with open(schema_path) as f:
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| 133 | schema_ast, _ = front_end.LoadSchema(f)
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| 134 |
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| 135 | # asdl/typed_arith.asdl -> typed_arith_asdl
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| 136 | ns = os.path.basename(schema_path).replace('.', '_')
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| 137 |
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| 138 | debug_info = gen_cpp.WriteHeaderFile(schema_ast, ARG_0, ns,
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| 139 | opts.pretty_print_methods,
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| 140 | out_prefix)
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| 141 |
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| 142 | if debug_info_path:
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| 143 | gen_cpp.WriteDebugInfo(debug_info, ns, debug_info_path)
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| 144 |
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| 145 | if not opts.pretty_print_methods:
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| 146 | # No .cc file at all
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| 147 | return
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| 148 |
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| 149 | gen_cpp.WriteCppFile(schema_ast, ARG_0, ns, abbrev, out_prefix)
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| 150 |
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| 151 | elif action == 'mypy': # Generated typed MyPy code
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| 152 | with open(schema_path) as f:
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| 153 | schema_ast, _ = front_end.LoadSchema(f)
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| 154 |
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| 155 | f = sys.stdout # type: ignore
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| 156 |
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| 157 | v4 = gen_python.GenMyPyVisitor(
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| 158 | f,
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| 159 | opts.abbrev_module,
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| 160 | abbrev.mod_entries,
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| 161 | pretty_print_methods=opts.pretty_print_methods,
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| 162 | py_init_n=opts.py_init_n)
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| 163 | v4.VisitModule(schema_ast)
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| 164 |
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| 165 | else:
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| 166 | raise RuntimeError('Invalid action %r' % action)
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| 167 |
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| 168 |
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| 169 | if __name__ == '__main__':
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| 170 | try:
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| 171 | main(sys.argv)
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| 172 | except RuntimeError as e:
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| 173 | print('%s: FATAL: %s' % (ARG_0, e), file=sys.stderr)
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| 174 | sys.exit(1)
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