OILS
/
frontend
/
consts_gen.py
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#!/usr/bin/env python2
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# Copyright 2016 Andy Chu. All rights reserved.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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"""
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consts_gen.py - Code generation for consts.py, id_kind_def.py, etc.
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"""
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from __future__ import print_function
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import collections
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import os
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import sys
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from asdl import gen_cpp
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from mycpp.mylib import log
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from frontend import id_kind_def
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from frontend import builtin_def
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from frontend import option_def
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def _CreateModule(id_spec, ids):
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"""Create a SYNTHETIC ASDL module to generate code from."""
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from asdl import ast
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id_variants = [ast.Constructor(name) for name, _ in ids]
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id_sum = ast.SimpleSum(id_variants,
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generate=['integers', 'no_namespace_suffix'])
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kind_variants = [ast.Constructor(name) for name in id_spec.kind_name_list]
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kind_sum = ast.SimpleSum(kind_variants, generate=['no_namespace_suffix'])
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id_ = ast.TypeDecl('Id', id_sum)
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kind_ = ast.TypeDecl('Kind', kind_sum)
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schema_ast = ast.Module('id_kind', [], [id_, kind_])
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return schema_ast
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_BUILTINS = builtin_def.All()
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def GenBuiltinLookup(func_name, kind, f):
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#log('%r %r', func_name, kind)
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pairs = [(b.name, b.index) for b in _BUILTINS if b.kind == kind]
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GenStringLookup('builtin_t', func_name, pairs, f)
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def GenStringLookup(type_name, func_name, pairs, f):
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#log('%s', pairs)
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groups = collections.defaultdict(list)
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for name, index in pairs:
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first_char = name[0]
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groups[first_char].append((name, index))
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if 0:
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for first_char, pairs in groups.iteritems():
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log('%s %d', first_char, len(pairs))
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log('%s', pairs)
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# Note: we could optimize the length check, e.g. have a second level
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# switch. But we would need to measure the difference. Caching the id on
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# AST nodes is probably a bigger win, e.g. for loops.
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#
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# Size optimization: don't repeat constants literally?
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f.write("""\
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%s %s(Str* s) {
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int length = len(s);
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if (length == 0) return 0; // consts.NO_INDEX
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const char* data = s->data_;
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switch (data[0]) {
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""" % (type_name, func_name))
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for first_char in sorted(groups):
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pairs = groups[first_char]
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f.write(" case '%s':\n" % first_char)
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for name, index in pairs:
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# NOTE: we have to check the length because they're not NUL-terminated
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f.write('''\
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if (length == %d && memcmp("%s", data, %d) == 0) return %d;
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''' % (len(name), name, len(name), index))
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f.write(' break;\n')
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f.write("""\
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}
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return 0; // consts.NO_INDEX
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}
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""")
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def GenStringMembership(func_name, strs, f):
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groups = collections.defaultdict(list)
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for s in strs:
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first_char = s[0]
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groups[first_char].append(s)
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f.write("""\
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bool %s(Str* s) {
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int length = len(s);
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if (length == 0) return false;
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const char* data = s->data_;
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switch (data[0]) {
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""" % func_name)
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for first_char in sorted(groups):
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strs = groups[first_char]
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f.write(" case '%s':\n" % first_char)
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for s in strs:
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# NOTE: we have to check the length because they're not NUL-terminated
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f.write('''\
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if (length == %d && memcmp("%s", data, %d) == 0) return true;
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''' % (len(s), s, len(s)))
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f.write(' break;\n')
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f.write("""\
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}
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return false;
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}
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""")
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C_CHAR = {
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# '\'' is a single quote in C
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"'": "\\'",
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'"': '\\"',
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'\\': "\\\\",
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'\t': '\\t',
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'\r': '\\r',
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'\n': '\\n',
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'\v': '\\v',
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'\0': '\\0',
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'\a': '\\a',
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'\b': '\\b',
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'\f': '\\f',
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'\x1b': '\\x1b',
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}
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def CChar(c):
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return C_CHAR.get(c, c)
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def GenCharLookup(func_name, lookup, f, required=False):
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f.write("""\
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Str* %s(Str* c) {
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assert(len(c) == 1);
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char ch = c->data_[0];
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// TODO-intern: return value
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switch (ch) {
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""" % func_name)
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for char_code in sorted(lookup):
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f.write(" case '%s':\n" % CChar(char_code))
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f.write(' return StrFromC("%s", 1);\n' % CChar(lookup[char_code]))
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f.write(" break;\n")
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f.write(" default:\n")
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if required:
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f.write(" assert(0);\n")
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else:
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f.write(" return nullptr;\n")
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f.write("""
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}
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}
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""")
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def GenStrList(l, name, out):
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element_globals = []
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for i, elem in enumerate(l):
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global_name = "k%s_%d" % (name, i)
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out('GLOBAL_STR(%s, "%s");', global_name, elem)
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element_globals.append(global_name)
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lit = ' COMMA '.join(element_globals)
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out('GLOBAL_LIST(%s, Str*, %d, {%s});\n', name, len(l), lit)
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def main(argv):
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try:
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action = argv[1]
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except IndexError:
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raise RuntimeError('Action required')
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# TODO: Remove duplication in core/meta.py
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ID_TO_KIND = {}
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BOOL_ARG_TYPES = {}
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TEST_UNARY_LOOKUP = {}
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TEST_BINARY_LOOKUP = {}
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TEST_OTHER_LOOKUP = {}
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ID_SPEC = id_kind_def.IdSpec(ID_TO_KIND, BOOL_ARG_TYPES)
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id_kind_def.AddKinds(ID_SPEC)
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id_kind_def.AddBoolKinds(ID_SPEC) # must come second
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id_kind_def.SetupTestBuiltin(ID_SPEC, TEST_UNARY_LOOKUP, TEST_BINARY_LOOKUP,
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TEST_OTHER_LOOKUP)
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ids = ID_SPEC.id_str2int.items()
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ids.sort(key=lambda pair: pair[1]) # Sort by ID
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if action == 'c':
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for name, id_int in ids:
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print('#define id__%s %s' % (name, id_int))
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elif action == 'cpp':
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schema_ast = _CreateModule(ID_SPEC, ids)
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out_prefix = argv[2]
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with open(out_prefix + '.h', 'w') as f:
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f.write("""\
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#ifndef ID_KIND_ASDL_H
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#define ID_KIND_ASDL_H
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namespace id_kind_asdl {
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#define ASDL_NAMES struct
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""")
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v = gen_cpp.ClassDefVisitor(f)
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v.VisitModule(schema_ast)
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f.write("""
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} // namespace id_kind_asdl
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#endif // ID_KIND_ASDL_H
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""")
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with open(out_prefix + '.cc', 'w') as f:
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f.write("""\
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#include <assert.h>
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#include "_gen/frontend/id_kind.asdl.h"
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namespace id_kind_asdl {
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""")
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v = gen_cpp.MethodDefVisitor(f)
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v.VisitModule(schema_ast)
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f.write('} // namespace id_kind_asdl\n')
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elif action == 'mypy':
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from asdl import gen_python
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schema_ast = _CreateModule(ID_SPEC, ids)
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#print(schema_ast)
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f = sys.stdout
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f.write("""\
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from asdl import pybase
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""")
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# Minor style issue: we want Id and Kind, not Id_e and Kind_e
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v = gen_python.GenMyPyVisitor(f)
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v.VisitModule(schema_ast)
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elif action == 'cpp-consts':
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# Break circular deps
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from core import pyutil
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from frontend import consts
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from _devbuild.gen.id_kind_asdl import Id_str, Kind_str
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from _devbuild.gen.types_asdl import redir_arg_type_str, bool_arg_type_str
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LIST_INT = [
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'STRICT_ALL',
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'YSH_UPGRADE',
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'YSH_ALL',
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'DEFAULT_TRUE',
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'PARSE_OPTION_NUMS',
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'SHOPT_OPTION_NUMS',
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'SET_OPTION_NUMS',
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'VISIBLE_SHOPT_NUMS',
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]
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prefix = argv[2]
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with open(prefix + '.h', 'w') as f:
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def out(fmt, *args):
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print(fmt % args, file=f)
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out("""\
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#ifndef CONSTS_H
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#define CONSTS_H
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#include "mycpp/runtime.h"
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#include "_gen/frontend/id_kind.asdl.h"
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#include "_gen/frontend/option.asdl.h"
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#include "_gen/core/runtime.asdl.h"
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#include "_gen/frontend/types.asdl.h"
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namespace consts {
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""")
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for name in LIST_INT:
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out('extern List<int>* %s;', name)
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out('extern List<Str*>* BUILTIN_NAMES;')
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out('extern List<Str*>* OSH_KEYWORD_NAMES;')
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out('extern List<Str*>* SET_OPTION_NAMES;')
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out('extern List<Str*>* SHOPT_OPTION_NAMES;')
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out("""\
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extern int NO_INDEX;
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extern Str* gVersion;
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int RedirDefaultFd(id_kind_asdl::Id_t id);
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types_asdl::redir_arg_type_t RedirArgType(id_kind_asdl::Id_t id);
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types_asdl::bool_arg_type_t BoolArgType(id_kind_asdl::Id_t id);
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id_kind_asdl::Kind GetKind(id_kind_asdl::Id_t id);
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types_asdl::opt_group_t OptionGroupNum(Str* s);
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option_asdl::option_t OptionNum(Str* s);
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option_asdl::builtin_t LookupNormalBuiltin(Str* s);
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option_asdl::builtin_t LookupAssignBuiltin(Str* s);
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option_asdl::builtin_t LookupSpecialBuiltin(Str* s);
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bool IsControlFlow(Str* s);
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bool IsKeyword(Str* s);
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Str* LookupCharC(Str* c);
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Str* LookupCharPrompt(Str* c);
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Str* OptionName(option_asdl::option_t opt_num);
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Tuple2<runtime_asdl::state_t, runtime_asdl::emit_t> IfsEdge(runtime_asdl::state_t state, runtime_asdl::char_kind_t ch);
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} // namespace consts
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#endif // CONSTS_H
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""")
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with open(prefix + '.cc', 'w') as f:
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def out(fmt, *args):
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print(fmt % args, file=f)
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out("""\
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#include "_gen/frontend/consts.h"
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using id_kind_asdl::Id;
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using id_kind_asdl::Kind;
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using types_asdl::redir_arg_type_e;
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using types_asdl::bool_arg_type_e;
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using option_asdl::builtin_t;
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namespace consts {
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int NO_INDEX = 0; // duplicated from frontend/consts.py
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""")
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# Generate gVersion, which is read by pyutil::GetVersion()
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this_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
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root_dir = os.path.join(this_dir, '..') # ~/git/oilshell/oil
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loader = pyutil._FileResourceLoader(root_dir)
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version_str = pyutil.GetVersion(loader)
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out('GLOBAL_STR(gVersion, "%s");' % version_str)
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out('')
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# Note: could use opt_num:: instead of raw ints
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for name in LIST_INT:
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val = getattr(consts, name)
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val_str = ' COMMA '.join(str(i) for i in val)
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out('GLOBAL_LIST(%s, int, %d, {%s});', name, len(val), val_str)
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389 |
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out("""\
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391 |
|
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int RedirDefaultFd(id_kind_asdl::Id_t id) {
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// relies on "switch lowering"
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switch (id) {
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""")
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for id_ in sorted(consts.REDIR_DEFAULT_FD):
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a = Id_str(id_).replace('.', '::')
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b = consts.REDIR_DEFAULT_FD[id_]
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out(' case %s: return %s;' % (a, b))
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out("""\
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}
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FAIL(kShouldNotGetHere);
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}
|
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""")
|
405 |
|
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out("""\
|
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types_asdl::redir_arg_type_t RedirArgType(id_kind_asdl::Id_t id) {
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// relies on "switch lowering"
|
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switch (id) {
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410 |
""")
|
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for id_ in sorted(consts.REDIR_ARG_TYPES):
|
412 |
a = Id_str(id_).replace('.', '::')
|
413 |
# redir_arg_type_e::Path, etc.
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414 |
b = redir_arg_type_str(consts.REDIR_ARG_TYPES[id_]).replace(
|
415 |
'.', '_e::')
|
416 |
out(' case %s: return %s;' % (a, b))
|
417 |
out("""\
|
418 |
}
|
419 |
FAIL(kShouldNotGetHere);
|
420 |
}
|
421 |
""")
|
422 |
|
423 |
out("""\
|
424 |
types_asdl::bool_arg_type_t BoolArgType(id_kind_asdl::Id_t id) {
|
425 |
// relies on "switch lowering"
|
426 |
switch (id) {
|
427 |
""")
|
428 |
for id_ in sorted(BOOL_ARG_TYPES):
|
429 |
a = Id_str(id_).replace('.', '::')
|
430 |
# bool_arg_type_e::Str, etc.
|
431 |
b = bool_arg_type_str(BOOL_ARG_TYPES[id_]).replace('.', '_e::')
|
432 |
out(' case %s: return %s;' % (a, b))
|
433 |
out("""\
|
434 |
}
|
435 |
FAIL(kShouldNotGetHere);
|
436 |
}
|
437 |
""")
|
438 |
|
439 |
out("""\
|
440 |
Kind GetKind(id_kind_asdl::Id_t id) {
|
441 |
// relies on "switch lowering"
|
442 |
switch (id) {
|
443 |
""")
|
444 |
for id_ in sorted(ID_TO_KIND):
|
445 |
a = Id_str(id_).replace('.', '::')
|
446 |
b = Kind_str(ID_TO_KIND[id_]).replace('.', '::')
|
447 |
out(' case %s: return %s;' % (a, b))
|
448 |
out("""\
|
449 |
}
|
450 |
FAIL(kShouldNotGetHere);
|
451 |
}
|
452 |
""")
|
453 |
|
454 |
pairs = consts.OPTION_GROUPS.items()
|
455 |
GenStringLookup('types_asdl::opt_group_t', 'OptionGroupNum', pairs,
|
456 |
f)
|
457 |
|
458 |
pairs = [(opt.name, opt.index) for opt in option_def.All()]
|
459 |
GenStringLookup('option_asdl::option_t', 'OptionNum', pairs, f)
|
460 |
|
461 |
GenBuiltinLookup('LookupNormalBuiltin', 'normal', f)
|
462 |
GenBuiltinLookup('LookupAssignBuiltin', 'assign', f)
|
463 |
GenBuiltinLookup('LookupSpecialBuiltin', 'special', f)
|
464 |
|
465 |
from frontend import lexer_def # break circular dep
|
466 |
GenStringMembership('IsControlFlow', lexer_def.CONTROL_FLOW_NAMES,
|
467 |
f)
|
468 |
GenStringMembership('IsKeyword', consts.OSH_KEYWORD_NAMES, f)
|
469 |
|
470 |
GenCharLookup('LookupCharC', consts._ONE_CHAR_C, f, required=True)
|
471 |
GenCharLookup('LookupCharPrompt', consts._ONE_CHAR_PROMPT, f)
|
472 |
|
473 |
# OptionName() is a bit redundant with ADSL's debug print option_str(),
|
474 |
# but the latter should get stripped from the binary
|
475 |
out("""\
|
476 |
Str* OptionName(option_asdl::option_t opt_num) {
|
477 |
const char* s;
|
478 |
switch (opt_num) {
|
479 |
""")
|
480 |
|
481 |
for opt in option_def.All():
|
482 |
out(' case %s:' % opt.index)
|
483 |
out(' s = "%s";' % opt.name)
|
484 |
out(' break;')
|
485 |
|
486 |
out("""\
|
487 |
default:
|
488 |
FAIL(kShouldNotGetHere);
|
489 |
}
|
490 |
return StrFromC(s); // TODO-intern
|
491 |
}
|
492 |
""")
|
493 |
|
494 |
#
|
495 |
# Generate a tightly packed 2D array for C, from a Python dict.
|
496 |
#
|
497 |
|
498 |
edges = consts._IFS_EDGES
|
499 |
max_state = max(edge[0] for edge in edges)
|
500 |
max_char_kind = max(edge[1] for edge in edges)
|
501 |
|
502 |
edge_array = []
|
503 |
for i in xrange(max_state + 1):
|
504 |
# unused cells get -1
|
505 |
edge_array.append(['-1'] * (max_char_kind + 1))
|
506 |
|
507 |
for i in xrange(max_state + 1):
|
508 |
for j in xrange(max_char_kind + 1):
|
509 |
entry = edges.get((i, j))
|
510 |
if entry is not None:
|
511 |
# pack (new_state, action) into 32 bits
|
512 |
edge_array[i][j] = '(%d<<16)|%d' % entry
|
513 |
|
514 |
parts = []
|
515 |
for i in xrange(max_state + 1):
|
516 |
parts.append(' {')
|
517 |
parts.append(', '.join('%10s' % cell for cell in edge_array[i]))
|
518 |
parts.append(' },\n')
|
519 |
|
520 |
out("""\
|
521 |
int _IFS_EDGE[%d][%d] = {
|
522 |
%s
|
523 |
};
|
524 |
""" % (max_state + 1, max_char_kind + 1, ''.join(parts)))
|
525 |
|
526 |
out("""\
|
527 |
// Note: all of these are integers, e.g. state_i, emit_i, char_kind_i
|
528 |
using runtime_asdl::state_t;
|
529 |
using runtime_asdl::emit_t;
|
530 |
using runtime_asdl::char_kind_t;
|
531 |
|
532 |
Tuple2<state_t, emit_t> IfsEdge(state_t state, runtime_asdl::char_kind_t ch) {
|
533 |
int cell = _IFS_EDGE[state][ch];
|
534 |
state_t new_state = cell >> 16;
|
535 |
emit_t emit = cell & 0xFFFF;
|
536 |
return Tuple2<state_t, emit_t>(new_state, emit);
|
537 |
}
|
538 |
""")
|
539 |
|
540 |
GenStrList(consts.BUILTIN_NAMES, 'BUILTIN_NAMES', out)
|
541 |
GenStrList(consts.OSH_KEYWORD_NAMES, 'OSH_KEYWORD_NAMES', out)
|
542 |
GenStrList(consts.SET_OPTION_NAMES, 'SET_OPTION_NAMES', out)
|
543 |
GenStrList(consts.SHOPT_OPTION_NAMES, 'SHOPT_OPTION_NAMES', out)
|
544 |
|
545 |
out("""\
|
546 |
} // namespace consts
|
547 |
""")
|
548 |
|
549 |
elif action == 'py-consts':
|
550 |
# It's kind of weird to use the generated code to generate more code.
|
551 |
# Can we do this instead with the parsed module for "id" and "types.asdl"?
|
552 |
|
553 |
from frontend import consts
|
554 |
from _devbuild.gen.id_kind_asdl import Id_str, Kind_str
|
555 |
from _devbuild.gen.types_asdl import redir_arg_type_str, bool_arg_type_str
|
556 |
|
557 |
print("""
|
558 |
from _devbuild.gen.id_kind_asdl import Id, Kind
|
559 |
from _devbuild.gen.types_asdl import redir_arg_type_e, bool_arg_type_e
|
560 |
""")
|
561 |
|
562 |
print('')
|
563 |
print('BOOL_ARG_TYPES = {')
|
564 |
for id_ in sorted(BOOL_ARG_TYPES):
|
565 |
v = BOOL_ARG_TYPES[id_]
|
566 |
# HACK
|
567 |
v = bool_arg_type_str(v).replace('.', '_e.')
|
568 |
print(' %s: %s,' % (Id_str(id_), v))
|
569 |
print('}')
|
570 |
|
571 |
print('')
|
572 |
print('TEST_UNARY_LOOKUP = {')
|
573 |
for op_str in sorted(TEST_UNARY_LOOKUP):
|
574 |
v = Id_str(TEST_UNARY_LOOKUP[op_str])
|
575 |
print(' %r: %s,' % (op_str, v))
|
576 |
print('}')
|
577 |
|
578 |
print('')
|
579 |
print('TEST_BINARY_LOOKUP = {')
|
580 |
for op_str in sorted(TEST_BINARY_LOOKUP):
|
581 |
v = Id_str(TEST_BINARY_LOOKUP[op_str])
|
582 |
print(' %r: %s,' % (op_str, v))
|
583 |
print('}')
|
584 |
|
585 |
print('')
|
586 |
print('TEST_OTHER_LOOKUP = {')
|
587 |
for op_str in sorted(TEST_OTHER_LOOKUP):
|
588 |
v = Id_str(TEST_OTHER_LOOKUP[op_str])
|
589 |
print(' %r: %s,' % (op_str, v))
|
590 |
print('}')
|
591 |
|
592 |
print('')
|
593 |
print('ID_TO_KIND = {')
|
594 |
for id_ in sorted(ID_TO_KIND):
|
595 |
v = Kind_str(ID_TO_KIND[id_])
|
596 |
print(' %s: %s,' % (Id_str(id_), v))
|
597 |
print('}')
|
598 |
|
599 |
else:
|
600 |
raise RuntimeError('Invalid action %r' % action)
|
601 |
|
602 |
|
603 |
if __name__ == '__main__':
|
604 |
try:
|
605 |
main(sys.argv)
|
606 |
except RuntimeError as e:
|
607 |
print('FATAL: %s' % e, file=sys.stderr)
|
608 |
sys.exit(1)
|