# SPDX-License-Identifier: LGPL-2.1-only
# Copyright 2022 Jookia <contact@jookia.org>

from hypothesis import assume
from hypothesis.strategies import composite

from src.parse import ParseContext, ParseError, ParseErrorException, ParseTask, Parser
from src.syntax import Syntax, SyntaxType
from tests.parse.templates import template_parse_valid, template_parse_invalid
from tests.test_syntax import draw_token_bool, draw_syntax_random


# Draws tokens to make a valid boolean
@composite
def draw_syntax_bool_valid(draw):
    token = draw(draw_token_bool())
    value = token.value == "True"
    result = Syntax(value, token.location, SyntaxType.BOOL)
    return ([token], result)


# Tests parse_bool works correctly
# We expect the following behaviour:
# - The resulting boolean is True if the first token is True
# - The resulting boolean is False if the first token is False
# - The Syntax's type is SyntaxType.BOOL
# template_parse_valid provides general parsing properties
@template_parse_valid(Parser().parse_bool, draw_syntax_bool_valid())
def test_parse_bool_valid():
    pass


# Generate an invalid boolean
# We expect the following behaviour:
# - Error if the token is not a SyntaxType.TOKEN
# - Error if the token is not True or False
@template_parse_invalid(Parser().parse_bool)
def test_parse_bool_invalid_incorrect(draw, parent_context):
    token = draw(draw_syntax_random())
    assume(not (token.type == SyntaxType.TOKEN and token.value in ["True", "False"]))
    context = ParseContext(ParseTask.PARSE_BOOL, token, parent_context)
    if token.type == SyntaxType.TOKEN:
        error = ParseErrorException(ParseError.NOT_BOOL, token, None, context)
    else:
        error = ParseErrorException(ParseError.NOT_TOKEN, token, None, context)
    return ([token], error)


# Generate no boolean
# We expect the following behaviour:
# - Error if there isn't a token
@template_parse_invalid(Parser().parse_bool)
def test_parse_bool_invalid_empty(draw, parent_context):
    context = ParseContext(ParseTask.PARSE_BOOL, None, parent_context)
    error = ParseErrorException(ParseError.NO_TOKEN, None, None, context)
    return ([], error)