1 |
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2 | "use strict";
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3 |
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4 | var environment = require("./environment.js");
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5 | var typify = require("./typify.js");
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6 | var utils = require("./utils.js");
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7 | var generator = require("./generator.js");
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8 | var shrink = require("./shrink.js");
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9 | var arbitraryBless = require("./arbitraryBless.js");
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10 |
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11 |
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12 |
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13 |
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14 |
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15 | function suchthat(arb, userenv, predicate) {
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16 | var env;
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17 | if (arguments.length === 2) {
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18 | predicate = userenv;
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19 | env = environment;
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20 | } else {
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21 | env = utils.merge(environment, userenv);
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22 | }
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23 |
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24 | arb = typeof arb === "string" ? typify.parseTypify(env, arb) : arb;
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25 | arb = utils.force(arb);
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26 |
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27 | return arbitraryBless({
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28 | generator: generator.bless(function (size) {
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29 | for (var i = 0; ; i++) {
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30 |
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31 | if (i > 5) {
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32 | i = 0;
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33 | size += 1;
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34 | }
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35 |
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36 | var x = arb.generator(size);
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37 | if (predicate(x)) {
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38 | return x;
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39 | }
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40 | }
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41 | }),
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42 |
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43 | shrink: shrink.bless(function (x) {
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44 | return arb.shrink(x).filter(predicate);
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45 | }),
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46 |
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47 | show: arb.show,
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48 | });
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49 | }
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50 |
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51 | module.exports = {
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52 | suchthat: suchthat,
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53 | };
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