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#!/usr/bin/env python3
def to_enum_hd(k, prefix):
res = prefix
for c in k.upper():
if c == ':' or c == '-':
res += '_'
continue
res += c
return res
def build_header(headers):
res = {}
for k in headers:
size = len(k)
if size not in res:
res[size] = {}
ent = res[size]
c = k[-1]
if c not in ent:
ent[c] = []
ent[c].append(k)
return res
def gen_enum(tokens, prefix):
print('''\
enum {''')
for k in sorted(tokens):
print('''\
{},'''.format(to_enum_hd(k, prefix)))
print('''\
{}MAXIDX,
}};'''.format(prefix))
def gen_index_header(tokens, prefix, value_type, comp_fun, return_type, fail_value):
print('''\
{} lookup_token(const {} *name, size_t namelen) {{
switch (namelen) {{'''.format(return_type, value_type))
b = build_header(tokens)
for size in sorted(b.keys()):
ents = b[size]
print('''\
case {}:'''.format(size))
print('''\
switch (name[{}]) {{'''.format(size - 1))
for c in sorted(ents.keys()):
headers = sorted(ents[c])
print('''\
case '{}':'''.format(c))
for k in headers:
print('''\
if ({}("{}", name, {})) {{
return {};
}}'''.format(comp_fun, k[:-1], size - 1, to_enum_hd(k, prefix)))
print('''\
break;''')
print('''\
}
break;''')
print('''\
}}
return {};
}}'''.format(fail_value))
def gentokenlookup(tokens, prefix, value_type='uint8_t', comp_fun='util::streq_l', return_type='int', fail_value='-1'):
gen_enum(tokens, prefix)
print()
gen_index_header(tokens, prefix, value_type, comp_fun, return_type, fail_value)
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