113 lines
4.1 KiB
JavaScript
113 lines
4.1 KiB
JavaScript
Elm.Native.Show = {};
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Elm.Native.Show.make = function(elm) {
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elm.Native = elm.Native || {};
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elm.Native.Show = elm.Native.Show || {};
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if (elm.Native.Show.values) return elm.Native.Show.values;
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var NList = Elm.Native.List.make(elm);
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var List = Elm.List.make(elm);
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var Dict = Elm.Dict.make(elm);
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var Tuple2 = Elm.Native.Utils.make(elm).Tuple2;
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var toString = function(v) {
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var type = typeof v;
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if (type === "function") {
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var name = v.func ? v.func.name : v.name;
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return '<function' + (name === '' ? '' : ': ') + name + '>';
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} else if (type === "boolean") {
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return v ? "True" : "False";
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} else if (type === "number") {
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return v+"";
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} else if ((v instanceof String) && v.isChar) {
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return "'" + addSlashes(v) + "'";
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} else if (type === "string") {
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return '"' + addSlashes(v) + '"';
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} else if (type === "object" && '_' in v && probablyPublic(v)) {
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var output = [];
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for (var k in v._) {
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for (var i = v._[k].length; i--; ) {
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output.push(k + " = " + toString(v._[k][i]));
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}
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}
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for (var k in v) {
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if (k === '_') continue;
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output.push(k + " = " + toString(v[k]));
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}
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if (output.length === 0) return "{}";
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return "{ " + output.join(", ") + " }";
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} else if (type === "object" && 'ctor' in v) {
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if (v.ctor.substring(0,6) === "_Tuple") {
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var output = [];
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for (var k in v) {
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if (k === 'ctor') continue;
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output.push(toString(v[k]));
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}
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return "(" + output.join(",") + ")";
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} else if (v.ctor === "::") {
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var output = '[' + toString(v._0);
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v = v._1;
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while (v.ctor === "::") {
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output += "," + toString(v._0);
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v = v._1;
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}
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return output + ']';
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} else if (v.ctor === "[]") {
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return "[]";
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} else if (v.ctor === "RBNode" || v.ctor === "RBEmpty") {
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var cons = F3(function(k,v,acc){return NList.Cons(Tuple2(k,v),acc)});
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var list = A3(Dict.foldr, cons, NList.Nil, v);
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var name = "Dict";
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if (list.ctor === "::" && list._0._1.ctor === "_Tuple0") {
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name = "Set";
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list = A2(List.map, function(x){return x._0}, list);
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}
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return name + ".fromList " + toString(list);
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} else {
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var output = "";
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for (var i in v) {
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if (i === 'ctor') continue;
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var str = toString(v[i]);
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var parenless = str[0] === '{' || str[0] === '<' || str.indexOf(' ') < 0;
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output += ' ' + (parenless ? str : '(' + str + ')');
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}
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return v.ctor + output;
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}
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}
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if (type === 'object' && 'recv' in v) return '<signal>';
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return "<internal structure>";
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};
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function addSlashes(str) {
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return str.replace(/\\/g, '\\\\')
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.replace(/\n/g, '\\n')
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.replace(/\t/g, '\\t')
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.replace(/\r/g, '\\r')
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.replace(/\v/g, '\\v')
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.replace(/\0/g, '\\0')
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.replace(/\'/g, "\\'")
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.replace(/\"/g, '\\"');
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}
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function probablyPublic(v) {
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var keys = Object.keys(v);
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var len = keys.length;
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if (len === 3
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&& 'props' in v
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&& 'element' in v) return false;
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if (len === 5
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&& 'horizontal' in v
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&& 'vertical' in v
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&& 'x' in v
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&& 'y' in v) return false;
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if (len === 7
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&& 'theta' in v
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&& 'scale' in v
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&& 'x' in v
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&& 'y' in v
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&& 'alpha' in v
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&& 'form' in v) return false;
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return true;
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}
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return elm.Native.Show.values = { show:toString };
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};
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