#758

Committed 04 Sep 2023 08:37PM UTC coverage: 0.0% (-78.3%) from 78.333%

Build # #758

Build Type

push

circle-ci

Committed by

hershd23

Commit Message

Increased underline length in at line 75 in text_summarization.rst
	modified:   docs/source/benchmarks/text_summarization.rst

Run Details

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/evadb/parser/lark_parser.py

# coding=utf-8
# Copyright 2018-2023 EvaDB
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os

from lark import Lark

from evadb.parser.lark_visitor import LarkInterpreter


class LarkParser(object):
    """
    Parser for EvaDB QL based on Lark
    """

    _parser = None

    def __new__(cls):
        if not hasattr(cls, "_instance"):
            cls._instance = super(LarkParser, cls).__new__(cls)
        return cls._instance

    def __init__(self):
        dir_path = os.path.dirname(os.path.realpath(__file__))
        lark_path = os.path.join(dir_path, "evadb.lark")
        with open(lark_path) as f:
            sql_grammar = f.read()
        self._parser = Lark(sql_grammar, parser="lalr")

    def parse(self, query_string: str) -> list:
        # remove trailing white space
        query_string = query_string.rstrip()

        # add semi-colon if needed
        if not query_string.endswith(";"):
            query_string += ";"

        tree = self._parser.parse(query_string)
        output = LarkInterpreter(query_string).visit(tree)

        # convert output to list if it is a single element
        if isinstance(output, list):
            return output
        else:
            return [output]

1	# coding=utf-8
2	# Copyright 2018-2023 EvaDB
3	#
4	# Licensed under the Apache License, Version 2.0 (the "License");
5	# you may not use this file except in compliance with the License.
6	# You may obtain a copy of the License at
7	#
8	# http://www.apache.org/licenses/LICENSE-2.0
9	#
10	# Unless required by applicable law or agreed to in writing, software
11	# distributed under the License is distributed on an "AS IS" BASIS,
12	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	# See the License for the specific language governing permissions and
14	# limitations under the License.
15	import os	×
16
17	from lark import Lark	×
18
19	from evadb.parser.lark_visitor import LarkInterpreter	×
20
21
22	class LarkParser(object):	×
23	"""
24	Parser for EvaDB QL based on Lark
25	"""
26
27	_parser = None	×
28
29	def __new__(cls):	×
30	if not hasattr(cls, "_instance"):	×
31	cls._instance = super(LarkParser, cls).__new__(cls)	×
32	return cls._instance	×
33
34	def __init__(self):	×
35	dir_path = os.path.dirname(os.path.realpath(__file__))	×
36	lark_path = os.path.join(dir_path, "evadb.lark")	×
37	with open(lark_path) as f:	×
38	sql_grammar = f.read()	×
39	self._parser = Lark(sql_grammar, parser="lalr")	×
40
41	def parse(self, query_string: str) -> list:	×
42	# remove trailing white space
43	query_string = query_string.rstrip()	×
44
45	# add semi-colon if needed
46	if not query_string.endswith(";"):	×
47	query_string += ";"	×
48
49	tree = self._parser.parse(query_string)	×
50	output = LarkInterpreter(query_string).visit(tree)	×
51
52	# convert output to list if it is a single element
53	if isinstance(output, list):	×
54	return output	×
55	else:
56	return [output]	×

georgia-tech-db / eva / #758

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