def MakeParser(line_reader, arena):
"""Top level parser."""
line_lexer = lexer.LineLexer(_MakeMatcher(), '', arena)
lx = lexer.Lexer(line_lexer, line_reader)
w_parser = word_parse.WordParser(lx, line_reader)
c_parser = cmd_parse.CommandParser(w_parser, lx, line_reader, arena)
return w_parser, c_parser
def MakeParserForCommandSub(self, line_reader, lexer, eof_id):
# type: (_Reader, Lexer, Id_t) -> CommandParser
"""To parse command sub, we want a fresh word parser state."""
w_parser = word_parse.WordParser(self, lexer, line_reader)
c_parser = cmd_parse.CommandParser(self, w_parser, lexer, line_reader)
c_parser.Init_EofId(eof_id)
return c_parser
def MakeOshParser(self, line_reader, emit_comp_dummy=False):
lx = self._MakeLexer(line_reader)
if emit_comp_dummy:
lx.EmitCompDummy() # A special token before EOF!
w_parser = word_parse.WordParser(self, lx, line_reader)
c_parser = cmd_parse.CommandParser(self, w_parser, lx, line_reader)
return c_parser
def MakeParserForTop(line_reader, arena=None):
"""Top level parser."""
# AtEnd() is true
line_lexer = lexer.LineLexer(lex.LEXER_DEF, '', arena=arena)
lx = lexer.Lexer(line_lexer, line_reader)
w_parser = word_parse.WordParser(lx, line_reader)
c_parser = cmd_parse.CommandParser(w_parser, lx, line_reader)
return w_parser, c_parser
def MakeParserForCommandSub(line_reader, lexer):
"""To parse command sub, we want a fresh word parser state.
It's a new instance based on same lexer and arena.
"""
arena = line_reader.arena
w_parser = word_parse.WordParser(lexer, line_reader)
c_parser = cmd_parse.CommandParser(w_parser, lexer, line_reader, arena)
return c_parser
def MakeParserForCommandSub(self, line_reader, lexer, eof_id):
"""To parse command sub, we want a fresh word parser state.
It's a new instance based on same lexer and arena.
"""
w_parser = word_parse.WordParser(self, lexer, line_reader)
c_parser = cmd_parse.CommandParser(self, w_parser, lexer, line_reader,
eof_id=eof_id)
return c_parser
def MakeParserForCompletion(code_str, arena):
"""Parser for partial lines."""
# NOTE: We don't need to use a arena here? Or we need a "scratch arena" that
# doesn't interfere with the rest of the program.
line_reader = reader.StringLineReader(code_str, arena)
line_lexer = lexer.LineLexer(_MakeMatcher(), '', arena) # AtEnd() is true
lx = lexer.Lexer(line_lexer, line_reader)
w_parser = word_parse.WordParser(lx, line_reader)
c_parser = cmd_parse.CommandParser(w_parser, lx, line_reader, arena)
return w_parser, c_parser
def MakeOshParser(self,
line_reader,
emit_comp_dummy=False,
aliases_in_flight=None):
# type: (_Reader, bool, Optional[AliasesInFlight]) -> CommandParser
lx = self._MakeLexer(line_reader)
if emit_comp_dummy:
lx.EmitCompDummy() # A special token before EOF!
w_parser = word_parse.WordParser(self, lx, line_reader)
c_parser = cmd_parse.CommandParser(self,
w_parser,
lx,
line_reader,
aliases_in_flight=aliases_in_flight)
return c_parser
def MakeParserForCompletion(self, code_str, arena):
"""Parser for partial lines.
NOTE: Uses its own arena!
"""
# NOTE: We don't need to use a arena here? Or we need a "scratch arena"
# that doesn't interfere with the rest of the program.
line_reader = reader.StringLineReader(code_str, arena)
line_lexer = lexer.LineLexer(match.MATCHER, '',
arena) # AtEnd() is true
lx = lexer.Lexer(line_lexer, line_reader)
w_parser = word_parse.WordParser(self, lx, line_reader)
c_parser = cmd_parse.CommandParser(self,
w_parser,
lx,
line_reader,
arena=arena)
return w_parser, c_parser
def MakeParser(self, line_reader):
line_lexer = lexer.LineLexer(match.MATCHER, '', self.arena)
lx = lexer.Lexer(line_lexer, line_reader)
w_parser = word_parse.WordParser(self, lx, line_reader)
c_parser = cmd_parse.CommandParser(self, w_parser, lx, line_reader)
return w_parser, c_parser
def MakeParserForCommandSub(line_reader, lexer):
"""To parse command sub, we want a fresh word parser state."""
# new instance based on same lexer
w_parser = word_parse.WordParser(lexer, line_reader)
c_parser = cmd_parse.CommandParser(w_parser, lexer, line_reader)
return c_parser
