from typing import Tuple
from pyparsing import Word, Literal, nums, alphanums, OneOrMore, Optional,\
SkipTo, ParseException, Group, Combine, delimitedList, quotedString,\
nestedExpr, ParseResults, oneOf, ungroup, Keyword
# define punctuation - reuse of expressions helps packratting work better
LPAR, RPAR, LBRACK, RBRACK, COMMA, EQ = map(Literal, "()[],=")
# Qualifier to go in front of type in the argument list (unsigned const int foo)
qualifier = OneOrMore(
Keyword('const') ^ Keyword('typename') ^ Keyword('struct')
^ Keyword('enum'))
qualifier = ungroup(qualifier.addParseAction(' '.join))
def turn_parseresults_to_list(s, loc, toks):
return ParseResults(normalise_templates(toks[0].asList()))
def normalise_templates(toks):
s_list = ['<']
s_list_append = s_list.append # lookup append func once, instead of many times
for tok in toks:
if isinstance(tok, str): # See if it's a string
s_list_append(' ' + tok)
else:
# If it's not a string
s_list_append(normalise_templates(tok))
s_list_append(' >')
return ''.join(s_list)
function.addParseAction(function_parse_action)
#########
# Block #
#########
def block_parse_action(instring, tokensStart, retTokens):
return types.Block(list(retTokens))
block = OneOrMore(expr + (LineEnd() | Literal(';')).suppress())
block.addParseAction(block_parse_action)
###########
# Comment #
###########
comment = (cppStyleComment | pythonStyleComment).suppress()
expr << (string | number | function | comment)
script = StringStart() + block + StringEnd()
def decode(s: str):
try:
result = script.parseString(s)
except PyParsingParseException as e: