diff options
Diffstat (limited to 'examples/protobuf_parser.py')
| -rw-r--r-- | examples/protobuf_parser.py | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/examples/protobuf_parser.py b/examples/protobuf_parser.py index 92f5a28..f4bc92b 100644 --- a/examples/protobuf_parser.py +++ b/examples/protobuf_parser.py @@ -13,20 +13,19 @@ from pyparsing import ( Suppress, Forward, Group, - oneOf, - ZeroOrMore, - Optional, - delimitedList, - restOfLine, + one_of, + Opt, + DelimitedList, + rest_of_line, quotedString, Dict, Keyword, ) -ident = Word(alphas + "_", alphanums + "_").setName("identifier") +ident = Word(alphas + "_", alphanums + "_").set_name("identifier") integer = Regex(r"[+-]?\d+") -LBRACE, RBRACE, LBRACK, RBRACK, LPAR, RPAR, EQ, SEMI = map(Suppress, "{}[]()=;") +LBRACE, RBRACE, LBRACK, RBRACK, LPAR, RPAR, EQ, SEMI = Suppress.using_each("{}[]()=;") kwds = """message required optional repeated enum extensions extends extend to package service rpc returns true false option import syntax""" @@ -38,9 +37,9 @@ messageBody = Forward() messageDefn = MESSAGE_ - ident("messageId") + LBRACE + messageBody("body") + RBRACE typespec = ( - oneOf( - """double float int32 int64 uint32 uint64 sint32 sint64 - fixed32 fixed64 sfixed32 sfixed64 bool string bytes""" + one_of( + "double float int32 int64 uint32 uint64 sint32 sint64" + " fixed32 fixed64 sfixed32 sfixed64 bool string bytes" ) | ident ) @@ -48,12 +47,12 @@ rvalue = integer | TRUE_ | FALSE_ | ident fieldDirective = LBRACK + Group(ident + EQ + rvalue) + RBRACK fieldDefnPrefix = REQUIRED_ | OPTIONAL_ | REPEATED_ fieldDefn = ( - Optional(fieldDefnPrefix) + Opt(fieldDefnPrefix) + typespec("typespec") + ident("ident") + EQ + integer("fieldint") - + ZeroOrMore(fieldDirective) + + fieldDirective[...] + SEMI ) @@ -62,7 +61,7 @@ enumDefn = ( ENUM_("typespec") - ident("name") + LBRACE - + Dict(ZeroOrMore(Group(ident + EQ + integer + SEMI)))("values") + + Dict((Group(ident + EQ + integer + SEMI))[...])("values") + RBRACE ) @@ -73,10 +72,10 @@ extensionsDefn = EXTENSIONS_ - integer + TO_ + integer + SEMI messageExtension = EXTEND_ - ident + LBRACE + messageBody + RBRACE # messageBody ::= { fieldDefn | enumDefn | messageDefn | extensionsDefn | messageExtension }* -messageBody << Group( - ZeroOrMore( - Group(fieldDefn | enumDefn | messageDefn | extensionsDefn | messageExtension) - ) +messageBody <<= Group( + Group( + fieldDefn | enumDefn | messageDefn | extensionsDefn | messageExtension + )[...] ) # methodDefn ::= 'rpc' ident '(' [ ident ] ')' 'returns' '(' [ ident ] ')' ';' @@ -84,25 +83,25 @@ methodDefn = ( RPC_ - ident("methodName") + LPAR - + Optional(ident("methodParam")) + + Opt(ident("methodParam")) + RPAR + RETURNS_ + LPAR - + Optional(ident("methodReturn")) + + Opt(ident("methodReturn")) + RPAR ) # serviceDefn ::= 'service' ident '{' methodDefn* '}' serviceDefn = ( - SERVICE_ - ident("serviceName") + LBRACE + ZeroOrMore(Group(methodDefn)) + RBRACE + SERVICE_ - ident("serviceName") + LBRACE + Group(methodDefn)[...] + RBRACE ) syntaxDefn = SYNTAX_ + EQ - quotedString("syntaxString") + SEMI # packageDirective ::= 'package' ident [ '.' ident]* ';' -packageDirective = Group(PACKAGE_ - delimitedList(ident, ".", combine=True) + SEMI) +packageDirective = Group(PACKAGE_ - DelimitedList(ident, ".", combine=True) + SEMI) -comment = "//" + restOfLine +comment = "//" + rest_of_line importDirective = IMPORT_ - quotedString("importFileSpec") + SEMI @@ -120,10 +119,11 @@ topLevelStatement = Group( | syntaxDefn ) -parser = Optional(packageDirective) + ZeroOrMore(topLevelStatement) +parser = Opt(packageDirective) + topLevelStatement[...] parser.ignore(comment) + if __name__ == "__main__": test1 = """message Person { @@ -168,4 +168,4 @@ if __name__ == "__main__": } """ - parser.runTests([test1, test2, test3]) + parser.run_tests([test1, test2, test3]) |