aaac7fed
 liuqimichale
add
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'use strict';
module.exports = {
wrap: wrapRange,
limit: limitRange,
validate: validateRange,
test: testRange,
curry: curry,
name: name
};
function wrapRange(min, max, value) {
var maxLessMin = max - min;
return ((value - min) % maxLessMin + maxLessMin) % maxLessMin + min;
}
function limitRange(min, max, value) {
return Math.max(min, Math.min(max, value));
}
function validateRange(min, max, value, minExclusive, maxExclusive) {
if (!testRange(min, max, value, minExclusive, maxExclusive)) {
throw new Error(value + ' is outside of range [' + min + ',' + max + ')');
}
return value;
}
function testRange(min, max, value, minExclusive, maxExclusive) {
return !(
value < min ||
value > max ||
(maxExclusive && (value === max)) ||
(minExclusive && (value === min))
);
}
function name(min, max, minExcl, maxExcl) {
return (minExcl ? '(' : '[') + min + ',' + max + (maxExcl ? ')' : ']');
}
function curry(min, max, minExclusive, maxExclusive) {
var boundNameFn = name.bind(null, min, max, minExclusive, maxExclusive);
return {
wrap: wrapRange.bind(null, min, max),
limit: limitRange.bind(null, min, max),
validate: function(value) {
return validateRange(min, max, value, minExclusive, maxExclusive);
},
test: function(value) {
return testRange(min, max, value, minExclusive, maxExclusive);
},
toString: boundNameFn,
name: boundNameFn
};
}
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