OILS
/
frontend
/
flag_gen.py
| 1 |
#!/usr/bin/env python2
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| 2 |
"""Flag_gen.py."""
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| 3 |
from __future__ import print_function
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| 4 |
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| 5 |
import itertools
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| 6 |
import sys
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| 7 |
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| 8 |
from _devbuild.gen.runtime_asdl import flag_type_e, value_e
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| 9 |
from mycpp.mylib import log
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| 10 |
from frontend import args
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| 11 |
from frontend import flag_def # side effect: flags are defined!
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| 12 |
from frontend import flag_spec
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| 13 |
from mycpp.mylib import switch
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| 14 |
# This causes a circular build dependency! That is annoying.
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| 15 |
# builtin_comp -> core/completion -> pylib/{os_path,path_stat,...} -> posix_
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| 16 |
#from osh import builtin_comp
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| 17 |
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| 18 |
_ = flag_def
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| 19 |
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| 20 |
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| 21 |
def CString(s):
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| 22 |
# HACKS for now
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| 23 |
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| 24 |
assert '"' not in s, s
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| 25 |
assert '\\' not in s, s
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| 26 |
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| 27 |
# For the default of write --end
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| 28 |
if s == '\n':
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| 29 |
return '"\\n"'
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| 30 |
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| 31 |
return '"%s"' % s
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| 32 |
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| 33 |
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| 34 |
def _WriteStrArray(f, var_name, a):
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| 35 |
c_strs = ', '.join(CString(s) for s in sorted(a))
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| 36 |
f.write('const char* %s[] = {%s, nullptr};\n' % (var_name, c_strs))
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| 37 |
f.write('\n')
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| 38 |
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| 39 |
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| 40 |
def _WriteActionParams(f, actions, counter):
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| 41 |
param_names = []
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| 42 |
for key in sorted(actions):
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| 43 |
action = actions[key]
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| 44 |
to_write = None
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| 45 |
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| 46 |
if isinstance(action, args.SetToString):
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| 47 |
if action.valid:
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| 48 |
to_write = action.valid
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| 49 |
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| 50 |
elif isinstance(action, args.SetNamedOption):
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| 51 |
if action.names:
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| 52 |
to_write = action.names
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| 53 |
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| 54 |
elif isinstance(action, args.SetNamedAction):
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| 55 |
if action.names:
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| 56 |
to_write = action.names
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| 57 |
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| 58 |
if to_write:
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| 59 |
uniq = counter.next()
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| 60 |
var_name = 'params_%d' % uniq
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| 61 |
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| 62 |
_WriteStrArray(f, var_name, to_write)
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| 63 |
else:
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| 64 |
var_name = None
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| 65 |
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| 66 |
param_names.append(var_name)
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| 67 |
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| 68 |
return param_names
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| 69 |
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| 70 |
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| 71 |
def _WriteActions(f, var_name, actions, counter):
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| 72 |
# TODO: 'osh' and 'set' duplicate shopt params!!! Maybe we want the entire
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| 73 |
# action not to be duplicated?
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| 74 |
param_names = _WriteActionParams(f, actions, counter)
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| 75 |
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| 76 |
f.write('Action_c %s[] = {\n' % var_name)
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| 77 |
for i, key in enumerate(sorted(actions)):
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| 78 |
action = actions[key]
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| 79 |
#log('%s %s', key, action)
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| 80 |
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| 81 |
name = None
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| 82 |
if isinstance(action, args.SetToString):
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| 83 |
if action.quit_parsing_flags:
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| 84 |
action_type = 'SetToString_q'
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| 85 |
else:
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| 86 |
action_type = 'SetToString'
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| 87 |
name = action.name
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| 88 |
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| 89 |
elif isinstance(action, args.SetToInt):
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| 90 |
action_type = 'SetToInt'
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name = action.name
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| 93 |
elif isinstance(action, args.SetToFloat):
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action_type = 'SetToFloat'
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name = action.name
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| 96 |
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elif isinstance(action, args.SetToTrue):
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action_type = 'SetToTrue'
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name = action.name
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| 101 |
elif isinstance(action, args.SetAttachedBool):
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action_type = 'SetAttachedBool'
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name = action.name
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| 105 |
elif isinstance(action, args.SetOption):
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action_type = 'SetOption'
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name = action.name
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| 108 |
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elif isinstance(action, args.SetNamedOption):
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if action.shopt:
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action_type = 'SetNamedOption_shopt'
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else:
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action_type = 'SetNamedOption'
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elif isinstance(action, args.SetAction):
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action_type = 'SetAction'
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name = action.name
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| 118 |
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| 119 |
elif isinstance(action, args.SetNamedAction):
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action_type = 'SetNamedAction'
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| 121 |
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else:
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raise AssertionError(action)
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| 124 |
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| 125 |
name_str = ('"%s"' % name) if name else 'nullptr'
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| 126 |
params_str = param_names[i] or 'nullptr'
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| 127 |
f.write(' {"%s", ActionType_c::%s, %s, %s},\n' %
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| 128 |
(key, action_type, name_str, params_str))
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| 129 |
#cc_f.write('SetToArg_c %s[] = {\n' % arity1_name)
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| 130 |
f.write('''\
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| 131 |
{},
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| 132 |
};
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| 133 |
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| 134 |
''')
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| 137 |
def _WriteDefaults(cc_f, defaults_name, defaults):
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| 138 |
cc_f.write('DefaultPair_c %s[] = {\n' % defaults_name)
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| 139 |
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| 140 |
for name in sorted(defaults):
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| 141 |
val = defaults[name]
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| 142 |
if val.tag() == value_e.Bool:
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| 143 |
typ = 'Bool'
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| 144 |
v = '{.b = %s}' % ('true' if val.b else 'false')
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| 145 |
elif val.tag() == value_e.Int:
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| 146 |
typ = 'Int'
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| 147 |
v = '{.i = -1}'
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| 148 |
elif val.tag() == value_e.Float:
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| 149 |
typ = 'Float'
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| 150 |
v = '{.f = -1.0}'
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| 151 |
elif val.tag() == value_e.Undef:
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| 152 |
typ = 'Str' # default for string
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| 153 |
v = '{}'
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| 154 |
elif val.tag() == value_e.Str:
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| 155 |
# NOTE: 'osh' FlagSpecAndMore_ has default='nice' and default='abbrev-text'
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| 156 |
typ = 'Str'
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| 157 |
v = '{.s = %s}' % CString(val.s)
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| 158 |
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| 159 |
else:
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| 160 |
raise AssertionError(val)
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| 161 |
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| 162 |
cc_f.write(' {%s, flag_type_e::%s, %s},\n' % (CString(name), typ, v))
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| 163 |
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| 164 |
cc_f.write('''\
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| 165 |
{},
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| 166 |
};
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| 167 |
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| 168 |
''')
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| 169 |
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| 170 |
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| 171 |
def Cpp(specs, header_f, cc_f):
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| 172 |
counter = itertools.count()
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| 173 |
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| 174 |
header_f.write("""\
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| 175 |
// arg_types.h is generated by frontend/flag_gen.py
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| 176 |
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| 177 |
#ifndef ARG_TYPES_H
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| 178 |
#define ARG_TYPES_H
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| 179 |
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| 180 |
#include "cpp/frontend_flag_spec.h" // for FlagSpec_c
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| 181 |
#include "mycpp/gc_mylib.h"
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| 182 |
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| 183 |
using runtime_asdl::value;
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| 184 |
using runtime_asdl::value_e;
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| 185 |
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| 186 |
namespace arg_types {
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| 187 |
""")
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| 188 |
for spec_name in sorted(specs):
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| 189 |
spec = specs[spec_name]
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| 190 |
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| 191 |
if not spec.fields:
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| 192 |
continue # skip empty 'eval' spec
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| 193 |
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| 194 |
#
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| 195 |
# Figure out how to initialize the class
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| 196 |
#
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| 197 |
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| 198 |
init_vals = []
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| 199 |
field_names = []
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| 200 |
field_decls = []
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| 201 |
bits = []
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| 202 |
for field_name in sorted(spec.fields):
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| 203 |
typ = spec.fields[field_name]
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| 204 |
field_name = field_name.replace('-', '_')
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| 205 |
field_names.append(field_name)
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| 206 |
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| 207 |
with switch(typ) as case:
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| 208 |
if case(flag_type_e.Bool):
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| 209 |
init_vals.append(
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| 210 |
'static_cast<value::Bool*>(attrs->index_(StrFromC("%s")))->b'
|
| 211 |
% field_name)
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| 212 |
field_decls.append('bool %s;' % field_name)
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| 213 |
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| 214 |
# Bug that test should find
|
| 215 |
#bits.append('maskbit(offsetof(%s, %s))' % (spec_name, field_name))
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| 216 |
|
| 217 |
elif case(flag_type_e.Str):
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| 218 |
# TODO: This code is ugly and inefficient! Generate something
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| 219 |
# better. At least get rid of 'new' everywhere?
|
| 220 |
init_vals.append('''\
|
| 221 |
attrs->index_(StrFromC("%s"))->tag() == value_e::Undef
|
| 222 |
? nullptr
|
| 223 |
: static_cast<value::Str*>(attrs->index_(StrFromC("%s")))->s''' %
|
| 224 |
(field_name, field_name))
|
| 225 |
|
| 226 |
field_decls.append('Str* %s;' % field_name)
|
| 227 |
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| 228 |
# Str* is a pointer type, so add a field here
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| 229 |
bits.append('maskbit(offsetof(%s, %s))' %
|
| 230 |
(spec_name, field_name))
|
| 231 |
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| 232 |
elif case(flag_type_e.Int):
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| 233 |
init_vals.append('''\
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| 234 |
attrs->index_(StrFromC("%s"))->tag() == value_e::Undef
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| 235 |
? -1
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| 236 |
: static_cast<value::Int*>(attrs->index_(StrFromC("%s")))->i''' %
|
| 237 |
(field_name, field_name))
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| 238 |
field_decls.append('int %s;' % field_name)
|
| 239 |
|
| 240 |
elif case(flag_type_e.Float):
|
| 241 |
init_vals.append('''\
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| 242 |
attrs->index_(StrFromC("%s"))->tag() == value_e::Undef
|
| 243 |
? -1
|
| 244 |
: static_cast<value::Float*>(attrs->index_(StrFromC("%s")))->f''' %
|
| 245 |
(field_name, field_name))
|
| 246 |
field_decls.append('float %s;' % field_name)
|
| 247 |
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| 248 |
else:
|
| 249 |
raise AssertionError(typ)
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| 250 |
|
| 251 |
#
|
| 252 |
# Now emit the class
|
| 253 |
#
|
| 254 |
|
| 255 |
if bits:
|
| 256 |
obj_tag = 'HeapTag::FixedSize'
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| 257 |
mask_str = 'field_mask()'
|
| 258 |
else:
|
| 259 |
obj_tag = 'HeapTag::Opaque'
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| 260 |
mask_str = 'kZeroMask'
|
| 261 |
|
| 262 |
header_f.write("""
|
| 263 |
class %s {
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| 264 |
public:
|
| 265 |
%s(Dict<Str*, runtime_asdl::value_t*>* attrs)""" % (spec_name, spec_name))
|
| 266 |
|
| 267 |
if field_names:
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| 268 |
header_f.write('\n : ')
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| 269 |
for i, field_name in enumerate(field_names):
|
| 270 |
if i != 0:
|
| 271 |
header_f.write(',\n ')
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| 272 |
header_f.write('%s(%s)' % (field_name, init_vals[i]))
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| 273 |
header_f.write(' {\n')
|
| 274 |
header_f.write(' }\n')
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| 275 |
header_f.write('\n')
|
| 276 |
|
| 277 |
for decl in field_decls:
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| 278 |
header_f.write(' %s\n' % decl)
|
| 279 |
|
| 280 |
header_f.write('\n')
|
| 281 |
header_f.write(' static constexpr ObjHeader obj_header() {\n')
|
| 282 |
header_f.write(' return ObjHeader::Class(%s, %s, sizeof(%s));\n' %
|
| 283 |
(obj_tag, mask_str, spec_name))
|
| 284 |
header_f.write(' }\n')
|
| 285 |
|
| 286 |
if bits:
|
| 287 |
header_f.write('\n')
|
| 288 |
header_f.write(' static constexpr uint32_t field_mask() {\n')
|
| 289 |
header_f.write(' return\n')
|
| 290 |
header_f.write(' ')
|
| 291 |
header_f.write('\n | '.join(bits))
|
| 292 |
header_f.write(';\n')
|
| 293 |
header_f.write(' }\n')
|
| 294 |
header_f.write('\n')
|
| 295 |
|
| 296 |
header_f.write("""\
|
| 297 |
};
|
| 298 |
""")
|
| 299 |
|
| 300 |
header_f.write("""
|
| 301 |
extern FlagSpec_c kFlagSpecs[];
|
| 302 |
extern FlagSpecAndMore_c kFlagSpecsAndMore[];
|
| 303 |
|
| 304 |
} // namespace arg_types
|
| 305 |
|
| 306 |
#endif // ARG_TYPES_H
|
| 307 |
|
| 308 |
""")
|
| 309 |
|
| 310 |
cc_f.write("""\
|
| 311 |
// arg_types.cc is generated by frontend/flag_gen.py
|
| 312 |
|
| 313 |
#include "arg_types.h"
|
| 314 |
using runtime_asdl::flag_type_e;
|
| 315 |
|
| 316 |
namespace arg_types {
|
| 317 |
|
| 318 |
""")
|
| 319 |
|
| 320 |
var_names = []
|
| 321 |
for i, spec_name in enumerate(sorted(flag_spec.FLAG_SPEC)):
|
| 322 |
spec = specs[spec_name]
|
| 323 |
arity0_name = None
|
| 324 |
arity1_name = None
|
| 325 |
actions_long_name = None
|
| 326 |
plus_name = None
|
| 327 |
defaults_name = None
|
| 328 |
|
| 329 |
if spec.arity0:
|
| 330 |
arity0_name = 'arity0_%d' % i
|
| 331 |
_WriteStrArray(cc_f, arity0_name, spec.arity0)
|
| 332 |
|
| 333 |
if spec.arity1:
|
| 334 |
arity1_name = 'arity1_%d' % i
|
| 335 |
_WriteActions(cc_f, arity1_name, spec.arity1, counter)
|
| 336 |
|
| 337 |
if spec.actions_long:
|
| 338 |
actions_long_name = 'actions_long_%d' % i
|
| 339 |
_WriteActions(cc_f, actions_long_name, spec.actions_long, counter)
|
| 340 |
|
| 341 |
if spec.plus_flags:
|
| 342 |
plus_name = 'plus_%d' % i
|
| 343 |
_WriteStrArray(cc_f, plus_name, spec.plus_flags)
|
| 344 |
|
| 345 |
if spec.defaults:
|
| 346 |
defaults_name = 'defaults_%d' % i
|
| 347 |
_WriteDefaults(cc_f, defaults_name, spec.defaults)
|
| 348 |
|
| 349 |
var_names.append((arity0_name, arity1_name, actions_long_name,
|
| 350 |
plus_name, defaults_name))
|
| 351 |
|
| 352 |
cc_f.write('FlagSpec_c kFlagSpecs[] = {\n')
|
| 353 |
|
| 354 |
# Now print a table
|
| 355 |
for i, spec_name in enumerate(sorted(flag_spec.FLAG_SPEC)):
|
| 356 |
spec = specs[spec_name]
|
| 357 |
names = var_names[i]
|
| 358 |
cc_f.write(' { "%s", %s, %s, %s, %s, %s },\n' % (
|
| 359 |
spec_name,
|
| 360 |
names[0] or 'nullptr',
|
| 361 |
names[1] or 'nullptr',
|
| 362 |
names[2] or 'nullptr',
|
| 363 |
names[3] or 'nullptr',
|
| 364 |
names[4] or 'nullptr',
|
| 365 |
))
|
| 366 |
|
| 367 |
cc_f.write("""\
|
| 368 |
{},
|
| 369 |
};
|
| 370 |
|
| 371 |
""")
|
| 372 |
|
| 373 |
n = len(var_names)
|
| 374 |
var_names = []
|
| 375 |
for i, spec_name in enumerate(sorted(flag_spec.FLAG_SPEC_AND_MORE)):
|
| 376 |
spec = specs[spec_name]
|
| 377 |
actions_short_name = None
|
| 378 |
actions_long_name = None
|
| 379 |
plus_name = None
|
| 380 |
defaults_name = None
|
| 381 |
|
| 382 |
if spec.actions_short:
|
| 383 |
actions_short_name = 'short_%d' % (n + i)
|
| 384 |
_WriteActions(cc_f, actions_short_name, spec.actions_short, counter)
|
| 385 |
|
| 386 |
#if spec.actions_long:
|
| 387 |
if spec.actions_long:
|
| 388 |
actions_long_name = 'long_%d' % (n + i)
|
| 389 |
_WriteActions(cc_f, actions_long_name, spec.actions_long, counter)
|
| 390 |
|
| 391 |
if spec.plus_flags:
|
| 392 |
plus_name = 'plus_%d' % i
|
| 393 |
_WriteStrArray(cc_f, plus_name, spec.plus_flags)
|
| 394 |
|
| 395 |
if spec.defaults:
|
| 396 |
defaults_name = 'defaults_%d' % (n + i)
|
| 397 |
_WriteDefaults(cc_f, defaults_name, spec.defaults)
|
| 398 |
|
| 399 |
var_names.append(
|
| 400 |
(actions_short_name, actions_long_name, plus_name, defaults_name))
|
| 401 |
|
| 402 |
cc_f.write('FlagSpecAndMore_c kFlagSpecsAndMore[] = {\n')
|
| 403 |
for i, spec_name in enumerate(sorted(flag_spec.FLAG_SPEC_AND_MORE)):
|
| 404 |
names = var_names[i]
|
| 405 |
cc_f.write(' { "%s", %s, %s, %s, %s },\n' % (
|
| 406 |
spec_name,
|
| 407 |
names[0] or 'nullptr',
|
| 408 |
names[1] or 'nullptr',
|
| 409 |
names[2] or 'nullptr',
|
| 410 |
names[3] or 'nullptr',
|
| 411 |
))
|
| 412 |
|
| 413 |
cc_f.write("""\
|
| 414 |
{},
|
| 415 |
};
|
| 416 |
""")
|
| 417 |
|
| 418 |
cc_f.write("""\
|
| 419 |
} // namespace arg_types
|
| 420 |
""")
|
| 421 |
|
| 422 |
|
| 423 |
def main(argv):
|
| 424 |
try:
|
| 425 |
action = argv[1]
|
| 426 |
except IndexError:
|
| 427 |
raise RuntimeError('Action required')
|
| 428 |
|
| 429 |
if 0:
|
| 430 |
for spec_name in sorted(flag_spec.FLAG_SPEC_AND_MORE):
|
| 431 |
log('%s', spec_name)
|
| 432 |
|
| 433 |
# Both kinds of specs have 'fields' attributes
|
| 434 |
specs = {}
|
| 435 |
specs.update(flag_spec.FLAG_SPEC)
|
| 436 |
specs.update(flag_spec.FLAG_SPEC_AND_MORE)
|
| 437 |
#log('SPECS %s', specs)
|
| 438 |
|
| 439 |
for spec_name in sorted(specs):
|
| 440 |
spec = specs[spec_name]
|
| 441 |
#spec.spec.PrettyPrint(f=sys.stderr)
|
| 442 |
#log('spec.arity1 %s', spec.spec.arity1)
|
| 443 |
#log('%s', spec_name)
|
| 444 |
|
| 445 |
#print(dir(spec))
|
| 446 |
#print(spec.arity0)
|
| 447 |
#print(spec.arity1)
|
| 448 |
#print(spec.options)
|
| 449 |
# Every flag has a default
|
| 450 |
#log('%s', spec.fields)
|
| 451 |
|
| 452 |
if action == 'cpp':
|
| 453 |
prefix = argv[2]
|
| 454 |
|
| 455 |
with open(prefix + '.h', 'w') as header_f:
|
| 456 |
with open(prefix + '.cc', 'w') as cc_f:
|
| 457 |
Cpp(specs, header_f, cc_f)
|
| 458 |
|
| 459 |
elif action == 'mypy':
|
| 460 |
print("""
|
| 461 |
from frontend.args import _Attributes
|
| 462 |
from _devbuild.gen.runtime_asdl import value, value_e, value_t
|
| 463 |
from typing import cast, Dict, Optional
|
| 464 |
""")
|
| 465 |
for spec_name in sorted(specs):
|
| 466 |
spec = specs[spec_name]
|
| 467 |
|
| 468 |
#log('%s spec.fields %s', spec_name, spec.fields)
|
| 469 |
if not spec.fields:
|
| 470 |
continue # skip empty specs, e.g. eval
|
| 471 |
|
| 472 |
print("""
|
| 473 |
class %s(object):
|
| 474 |
def __init__(self, attrs):
|
| 475 |
# type: (Dict[str, value_t]) -> None
|
| 476 |
""" % spec_name)
|
| 477 |
|
| 478 |
i = 0
|
| 479 |
for field_name in sorted(spec.fields):
|
| 480 |
typ = spec.fields[field_name]
|
| 481 |
field_name = field_name.replace('-', '_')
|
| 482 |
|
| 483 |
with switch(typ) as case:
|
| 484 |
if case(flag_type_e.Bool):
|
| 485 |
print(
|
| 486 |
' self.%s = cast(value.Bool, attrs[%r]).b # type: bool'
|
| 487 |
% (field_name, field_name))
|
| 488 |
|
| 489 |
elif case(flag_type_e.Str):
|
| 490 |
tmp = 'val%d' % i
|
| 491 |
print(' %s = attrs[%r]' % (tmp, field_name))
|
| 492 |
print(
|
| 493 |
' self.%s = None if %s.tag() == value_e.Undef else cast(value.Str, %s).s # type: Optional[str]'
|
| 494 |
% (field_name, tmp, tmp))
|
| 495 |
|
| 496 |
elif case(flag_type_e.Int):
|
| 497 |
tmp = 'val%d' % i
|
| 498 |
print(' %s = attrs[%r]' % (tmp, field_name))
|
| 499 |
print(
|
| 500 |
' self.%s = -1 if %s.tag() == value_e.Undef else cast(value.Int, %s).i # type: int'
|
| 501 |
% (field_name, tmp, tmp))
|
| 502 |
|
| 503 |
elif case(flag_type_e.Float):
|
| 504 |
tmp = 'val%d' % i
|
| 505 |
print(' %s = attrs[%r]' % (tmp, field_name))
|
| 506 |
print(
|
| 507 |
' self.%s = -1.0 if %s.tag() == value_e.Undef else cast(value.Float, %s).f # type: float'
|
| 508 |
% (field_name, tmp, tmp))
|
| 509 |
else:
|
| 510 |
raise AssertionError(typ)
|
| 511 |
|
| 512 |
i += 1
|
| 513 |
|
| 514 |
print()
|
| 515 |
|
| 516 |
else:
|
| 517 |
raise RuntimeError('Invalid action %r' % action)
|
| 518 |
|
| 519 |
|
| 520 |
if __name__ == '__main__':
|
| 521 |
try:
|
| 522 |
main(sys.argv)
|
| 523 |
except RuntimeError as e:
|
| 524 |
print('FATAL: %s' % e, file=sys.stderr)
|
| 525 |
sys.exit(1)
|