362 lines
11 KiB
Python
362 lines
11 KiB
Python
import pytest
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import ast
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from core.builtin_concepts import ParserResultConcept, BuiltinConcepts, ReturnValueConcept
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from core.concept import Concept
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from core.sheerka import Sheerka, ExecutionContext
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from parsers.ConceptLexerParser import OrderedChoice, StrMatch, ConceptMatch, RegexParser
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from parsers.PythonParser import PythonParser, PythonNode
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from core.tokenizer import Keywords, Tokenizer
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from parsers.DefaultParser import DefaultParser, NameNode, SyntaxErrorNode
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from parsers.DefaultParser import UnexpectedTokenErrorNode, DefConceptNode
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# def nop():
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# return NopNode()
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#
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#
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# def n(number):
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# return NumberNode([], number)
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#
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#
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# def s(string, quote="'"):
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# return StringNode([], string, quote)
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#
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#
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# def v(name):
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# return VariableNode([], name)
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#
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#
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# def t():
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# return TrueNode([])
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#
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#
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# def f():
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# return FalseNode([])
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#
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#
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# def null():
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# return NullNode([])
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#
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#
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# def b(operator, left, right):
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# return BinaryNode([], operator, left, right)
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#
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# def compare_ast(left, right):
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# left_as_string = ast.dump(left)
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# left_as_string = left_as_string.replace(", ctx=Load()", "")
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# left_as_string = left_as_string.replace(", kind=None", "")
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#
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# right_as_string = right if isinstance(right, str) else ast.dump(right)
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# right_as_string = right_as_string.replace(", ctx=Load()", "")
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# right_as_string = right_as_string.replace(", kind=None", "")
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#
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# return left_as_string == right_as_string
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#
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def get_concept(name, where=None, pre=None, post=None, body=None, definition=None):
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concept = DefConceptNode([], name=NameNode(list(Tokenizer(name))))
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if body:
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concept.body = get_concept_part(body)
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if where:
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concept.where = get_concept_part(where)
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if pre:
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concept.pre = get_concept_part(pre)
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if post:
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concept.post = get_concept_part(post)
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if definition:
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concept.definition = ReturnValueConcept(
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"Parsers:RegexParser",
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True,
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definition)
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return concept
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def get_context():
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sheerka = Sheerka(skip_builtins_in_db=True)
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sheerka.initialize("mem://")
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return ExecutionContext("test", "xxx", sheerka)
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def get_concept_part(part):
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if isinstance(part, str):
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node = PythonNode(part, ast.parse(part, mode="eval"))
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return ReturnValueConcept(
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who="Parsers:DefaultParser",
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status=True,
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value=ParserResultConcept(
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source=part,
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parser=PythonParser(),
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value=node))
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if isinstance(part, PythonNode):
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return ReturnValueConcept(
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who="Parsers:DefaultParser",
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status=True,
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value=ParserResultConcept(
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source=part.source,
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parser=PythonParser(),
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value=part))
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if isinstance(part, ReturnValueConcept):
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return part
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# @pytest.mark.parametrize("text, expected", [
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# ("1", n(1)),
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# ("+1", n(1)),
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# ("-1", n(-1)),
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# ("'foo'", s("foo")),
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# ("identifier", v("identifier")),
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# ("true", t()),
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# ("false", f()),
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# ("null", null()),
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# ("1 * 2", b(TokenKind.STAR, n(1), n(2))),
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# ("1 * 2/3", b(TokenKind.STAR, n(1), b(TokenKind.SLASH, n(2), n(3)))),
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# ("1 + 2", b(TokenKind.PLUS, n(1), n(2))),
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# ("1 + 2 - 3", b(TokenKind.PLUS, n(1), b(TokenKind.MINUS, n(2), n(3)))),
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# ("1 + 2-3", b(TokenKind.PLUS, n(1), b(TokenKind.PLUS, n(2), n(-3)))),
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# ("1 + 2 +-3", b(TokenKind.PLUS, n(1), b(TokenKind.PLUS, n(2), n(-3)))),
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# ("1 + 2 * 3", b(TokenKind.PLUS, n(1), b(TokenKind.STAR, n(2), n(3)))),
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# ("1 * 2 + 3", b(TokenKind.PLUS, b(TokenKind.STAR, n(1), n(2)), n(3))),
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# ("(1 + 2) * 3", b(TokenKind.STAR, b(TokenKind.PLUS, n(1), n(2)), n(3))),
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# ("1 * (2 + 3)", b(TokenKind.STAR, n(1), b(TokenKind.PLUS, n(2), n(3)))),
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# ])
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# def test_i_can_parse_simple_expression(text, expected):
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# parser = DefaultParser(text, None)
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# ast = parser.parse()
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# assert ast.is_same(expected)
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#
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#
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# @pytest.mark.parametrize("text, token_found, expected_tokens", [
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# ("1+", TokenKind.EOF,
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# [TokenKind.NUMBER, TokenKind.STRING, TokenKind.IDENTIFIER, 'true', 'false', 'null', TokenKind.LPAR]),
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# ("(1+1", TokenKind.EOF, [TokenKind.RPAR])
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# ])
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# def test_i_can_detect_unexpected_end_of_code(text, token_found, expected_tokens):
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# parser = DefaultParser(text, None)
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# parser.parse()
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#
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# assert parser.has_error
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# assert parser.error_sink[0].tokens[0].type == token_found
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# assert parser.error_sink[0].expected_tokens == expected_tokens
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@pytest.mark.parametrize("text, expected", [
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("def concept hello", get_concept(name="hello")),
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("def concept hello ", get_concept(name="hello")),
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("def concept a + b", get_concept(name="a + b")),
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("def concept a+b", get_concept(name="a + b")),
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("def concept 'a+b'+c", get_concept(name="'a+b' + c")),
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("def concept 'as if'", get_concept(name="'as if'")),
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("def concept 'as' if", get_concept(name="'as if'")),
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("def concept hello as 'hello'", get_concept(name="hello", body="'hello'")),
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("def concept hello as 1", get_concept(name="hello", body="1")),
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("def concept hello as 1 + 1", get_concept(name="hello", body="1 + 1")),
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])
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def test_i_can_parse_def_concept(text, expected):
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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node = res.value.value
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assert res.status
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assert res.who == parser.name
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assert res.value.source == text
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assert isinstance(res.value, ParserResultConcept)
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assert node == expected
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def test_i_can_parse_complex_def_concept_statement():
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text = """def concept a plus b
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where a,b
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pre isinstance(a, int) and isinstance(b, float)
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post isinstance(res, int)
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as res = a + b
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"""
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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return_value = res.value
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expected_concept = get_concept(
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name="a plus b",
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where="a,b",
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pre="isinstance(a, int) and isinstance(b, float)",
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post="isinstance(res, int)",
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body=PythonNode("res = a + b", ast.parse("res = a + b", mode="exec"))
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)
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assert res.status
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assert isinstance(return_value, ParserResultConcept)
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assert return_value.value == expected_concept
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def test_i_can_have_mutilines_declarations():
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text = """
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def concept add one to a as
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def func(x):
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return x+1
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func(a)
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"""
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expected_concept = get_concept(
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name="add one to a ",
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body=PythonNode(
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"def func(x):\n return x+1\nfunc(a)",
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ast.parse("def func(x):\n return x+1\nfunc(a)", mode="exec"))
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)
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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return_value = res.value
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assert res.status
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assert isinstance(return_value, ParserResultConcept)
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assert return_value.value == expected_concept
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def test_i_can_use_colon_to_use_indentation():
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text = """
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def concept add one to a as:
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def func(x):
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return x+1
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func(a)
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"""
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expected_concept = get_concept(
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name="add one to a ",
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body=PythonNode(
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"def func(x):\n return x+1\nfunc(a)",
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ast.parse("def func(x):\n return x+1\nfunc(a)", mode="exec"))
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)
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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return_value = res.value
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assert res.status
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assert isinstance(return_value, ParserResultConcept)
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assert return_value.value == expected_concept
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def test_indentation_is_mandatory_after_a_colon():
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text = """
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def concept add one to a as:
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def func(x):
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return x+1
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func(a)
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"""
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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return_value = res.value
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assert not res.status
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assert isinstance(return_value, ParserResultConcept)
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assert isinstance(return_value.value[0], SyntaxErrorNode)
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assert return_value.value[0].message == "Indentation not found."
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def test_indentation_is_not_allowed_if_the_colon_is_missing():
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text = """
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def concept add one to a as
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def func(x):
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return x+1
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func(a)
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"""
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context = get_context()
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sheerka = context.sheerka
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parser = DefaultParser()
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res = parser.parse(context, text)
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return_value = res.value
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assert not res.status
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assert isinstance(return_value, ParserResultConcept)
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assert sheerka.isinstance(return_value.value[0], BuiltinConcepts.TOO_MANY_ERRORS)
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def test_name_is_mandatory():
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text = "def concept as 'hello'"
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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return_value = res.value
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assert not res.status
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assert isinstance(return_value, ParserResultConcept)
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assert isinstance(return_value.value[0], SyntaxErrorNode)
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assert return_value.value[0].message == "Name is mandatory"
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def test_concept_keyword_is_mandatory_but_the_concept_is_recognized():
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text = "def hello as a where b pre c post d"
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expected_concept = get_concept(name="hello", body="a", where="b", pre="c", post="d")
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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return_value = res.value
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assert not res.status
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assert isinstance(return_value, ParserResultConcept)
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assert isinstance(return_value.value[0], UnexpectedTokenErrorNode)
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assert return_value.value[0].message == "Syntax error."
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assert return_value.value[0].expected_tokens == [Keywords.CONCEPT]
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assert return_value.try_parsed == expected_concept
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@pytest.mark.parametrize("text", [
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"def concept hello where 1+",
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"def concept hello pre 1+",
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"def concept hello post 1+",
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"def concept hello as 1+"
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])
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def test_i_can_detect_error_in_declaration(text):
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context = get_context()
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sheerka = context.sheerka
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parser = DefaultParser()
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res = parser.parse(context, text)
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return_value = res.value
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assert not res.status
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assert isinstance(return_value, ParserResultConcept)
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assert sheerka.isinstance(return_value.value[0], BuiltinConcepts.TOO_MANY_ERRORS)
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def test_new_line_is_not_allowed_in_the_name():
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text = "def concept hello \n my friend as 'hello'"
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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return_value = res.value
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assert not res.status
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assert return_value.value == [SyntaxErrorNode([], "Newline are not allowed in name.")]
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def test_i_can_parse_def_concept_from_regex():
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text = "def concept name from bnf a_concept | 'a_string' as __definition[0]"
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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node = res.value.value
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definition = OrderedChoice(ConceptMatch("a_concept"), StrMatch("a_string"))
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parser_result = ParserResultConcept(RegexParser(), "a_concept | 'a_string'", definition, definition)
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expected = get_concept(name="name", body="__definition[0]", definition=parser_result)
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assert res.status
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assert res.who == parser.name
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assert res.value.source == text
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assert isinstance(res.value, ParserResultConcept)
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assert node == expected
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def test_i_can_detect_empty_bnf_declaration():
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text = "def concept name from bnf as __definition[0]"
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parser = DefaultParser()
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res = parser.parse(get_context(), text)
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assert not res.status
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assert res.value.value[0] == SyntaxErrorNode([], "Empty declaration")
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