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