aboutsummaryrefslogtreecommitdiff
path: root/ext/bg/js/conditions.js
blob: 3f3c0a45bb5a0d4beb3cfb715947c7737fb68bff (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
/*
 * Copyright (C) 2019-2020  Yomichan Authors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */


function conditionsValidateOptionValue(object, value) {
    if (hasOwn(object, 'validate') && !object.validate(value)) {
        throw new Error('Invalid value for condition');
    }

    if (hasOwn(object, 'transform')) {
        value = object.transform(value);

        if (hasOwn(object, 'validateTransformed') && !object.validateTransformed(value)) {
            throw new Error('Invalid value for condition');
        }
    }

    return value;
}

function conditionsValidateOptionInputValue(object, value) {
    if (hasOwn(object, 'transformInput')) {
        return object.transformInput(value);
    }

    return null;
}

function conditionsNormalizeOptionValue(descriptors, type, operator, optionValue, isInput) {
    if (!hasOwn(descriptors, type)) {
        throw new Error('Invalid type');
    }

    const conditionDescriptor = descriptors[type];
    if (!hasOwn(conditionDescriptor.operators, operator)) {
        throw new Error('Invalid operator');
    }

    const operatorDescriptor = conditionDescriptor.operators[operator];

    const descriptorArray = [conditionDescriptor, operatorDescriptor];

    let transformedValue = optionValue;

    let inputTransformedValue = null;
    if (isInput) {
        for (const descriptor of descriptorArray) {
            let value = inputTransformedValue !== null ? inputTransformedValue : transformedValue;
            value = conditionsValidateOptionInputValue(descriptor, value);
            if (value !== null) {
                inputTransformedValue = value;
            }
        }

        if (inputTransformedValue !== null) {
            transformedValue = inputTransformedValue;
        }
    }

    for (const descriptor of descriptorArray) {
        transformedValue = conditionsValidateOptionValue(descriptor, transformedValue);
    }

    if (hasOwn(operatorDescriptor, 'transformReverse')) {
        transformedValue = operatorDescriptor.transformReverse(transformedValue);
    }

    return [transformedValue, inputTransformedValue];
}

function conditionsTestValueThrowing(descriptors, type, operator, optionValue, value) {
    if (!hasOwn(descriptors, type)) {
        throw new Error('Invalid type');
    }

    const conditionDescriptor = descriptors[type];
    if (!hasOwn(conditionDescriptor.operators, operator)) {
        throw new Error('Invalid operator');
    }

    const operatorDescriptor = conditionDescriptor.operators[operator];
    if (hasOwn(operatorDescriptor, 'transform')) {
        if (hasOwn(operatorDescriptor, 'transformCache')) {
            const key = `${optionValue}`;
            const transformCache = operatorDescriptor.transformCache;
            if (hasOwn(transformCache, key)) {
                optionValue = transformCache[key];
            } else {
                optionValue = operatorDescriptor.transform(optionValue);
                transformCache[key] = optionValue;
            }
        } else {
            optionValue = operatorDescriptor.transform(optionValue);
        }
    }

    return operatorDescriptor.test(value, optionValue);
}

function conditionsTestValue(descriptors, type, operator, optionValue, value) {
    try {
        return conditionsTestValueThrowing(descriptors, type, operator, optionValue, value);
    } catch (e) {
        return false;
    }
}

function conditionsClearCaches(descriptors) {
    for (const type in descriptors) {
        if (!hasOwn(descriptors, type)) {
            continue;
        }

        const conditionDescriptor = descriptors[type];
        if (hasOwn(conditionDescriptor, 'transformCache')) {
            conditionDescriptor.transformCache = {};
        }

        const operatorDescriptors = conditionDescriptor.operators;
        for (const operator in operatorDescriptors) {
            if (!hasOwn(operatorDescriptors, operator)) {
                continue;
            }

            const operatorDescriptor = operatorDescriptors[operator];
            if (hasOwn(operatorDescriptor, 'transformCache')) {
                operatorDescriptor.transformCache = {};
            }
        }
    }
}