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spell_zine.js(file created)
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| 1 | + | // Build: | |
| 2 | + | // npx google-closure-compiler -O SIMPLE minmoire.js > minmoire.min.js && du -b minmoire.min.js | |
| 3 | + | ||
| 4 | + | // Changes from base grimoire: | |
| 5 | + | // - API names | |
| 6 | + | // - Rules are two-length arrays rather than {needs, makes} objects | |
| 7 | + | // - Some compressed logic. Eg. removed do/while for executing facts, which may change behavior of edge cases | |
| 8 | + | // - parsing based on .split() rather than regex matches | |
| 9 | + | // - Assumes various ES6+ syntax | |
| 10 | + | // - various heresies like var (instead of const), omitting { } from if statements, etc | |
| 11 | + | ||
| 12 | + | // Grab the salt | |
| 13 | + | // note: "Tally" renamed to C, standing for Count | |
| 14 | + | var C = (t,k,n) => t[k] = (k in t ? t[k] : 0) + n; | |
| 15 | + | var spl = (d) => (i) => i.split(d).filter(c => !!c) | |
| 16 | + | ||
| 17 | + | // Lay the circle, trace the lines | |
| 18 | + | var R = [], I = [] // Recipes (rules) and Inventory (current facts) | |
| 19 | + | ||
| 20 | + | // Eval | |
| 21 | + | var E = (i='') => { | |
| 22 | + | P(i); | |
| 23 | + | // following code was formerly the run() function | |
| 24 | + | for (var r of R) { // recipe | |
| 25 | + | for (var n in r[0]) { | |
| 26 | + | if ((I[n] || 0) < r[0][n]) break; | |
| 27 | + | } | |
| 28 | + | // deduct needs | |
| 29 | + | for (var n in r[0]) C(I, n, -r[0][n]); | |
| 30 | + | // add (or execute) makes | |
| 31 | + | for (var m in r[1]) { | |
| 32 | + | var cq = r[1][m] // consequence | |
| 33 | + | try { | |
| 34 | + | cq(I); | |
| 35 | + | } | |
| 36 | + | catch { | |
| 37 | + | // Consequence is assumed to be a number | |
| 38 | + | C(I, m, cq); | |
| 39 | + | } | |
| 40 | + | } | |
| 41 | + | } | |
| 42 | + | } | |
| 43 | + | ||
| 44 | + | // Parse into inventory | |
| 45 | + | var P = (i) => { | |
| 46 | + | // Mode characters; order matters for : and ; | |
| 47 | + | // (state variable `m` is initialized here) | |
| 48 | + | var ms = [ ':', '>', m = ';']; | |
| 49 | + | for (let [t, c] of spl(/[^\S]/)(i).map(spl('^'))) { // token, count | |
| 50 | + | if (t == ':') W(); | |
| 51 | + | if (ms.includes(t)) m = t; | |
| 52 | + | else C((m == ';') ? I : R.at(-1)[ms.indexOf(m)], t, parseInt(c) || 1); | |
| 53 | + | } | |
| 54 | + | } | |
| 55 | + | ||
| 56 | + | // Has | |
| 57 | + | var H = (...n) => n.reduce((h, f) => h && I[f], !0 ) | |
| 58 | + | ||
| 59 | + | // Register (W stands for Write) | |
| 60 | + | var W = (N={}, M={}) => R.push([ N, M ]) | |
| 61 | + | ||
| 62 | + | // Basic test | |
| 63 | + | // const program = ` | |
| 64 | + | // : a > b ; | |
| 65 | + | // : b^100 > overflow_b ; | |
| 66 | + | // : > a b^99 c | |
| 67 | + | // `; | |
| 68 | + | // E(program); | |
| 69 | + | // console.assert( | |
| 70 | + | // H("overflow_b") | |
| 71 | + | // && !H("a") | |
| 72 | + | // && !H("b") | |
| 73 | + | // && H("c") | |
| 74 | + | // ) | |
| 75 | + | // W({overflow_b:1}, {overflow_b:function() {console.log('Too much B!')}}) | |
| 76 | + | // E() | |
| 77 | + | ||
| 78 | + | // Original readable API | |
| 79 | + | // const grimoire = { | |
| 80 | + | // recipes: R, | |
| 81 | + | // inventory: I, | |
| 82 | + | // eval: E, | |
| 83 | + | // parse: P, | |
| 84 | + | // // note: run() was folded into eval() | |
| 85 | + | // has: H, | |
| 86 | + | // register: W | |
| 87 | + | // } | |
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