mirror of https://github.com/jkjoy/sunpeiwen.git
29 lines
674 B
JavaScript
29 lines
674 B
JavaScript
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var utils = require('../utils'),
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nodes = require('../nodes');
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/**
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* This is a helper function for the slice method
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*
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* @param {String|Ident} vals
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* @param {Unit} start [0]
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* @param {Unit} end [vals.length]
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* @return {String|Literal|Null}
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* @api public
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*/
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(module.exports = function slice(val, start, end) {
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start = start && start.nodes[0].val;
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end = end && end.nodes[0].val;
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val = utils.unwrap(val).nodes;
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if (val.length > 1) {
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return utils.coerce(val.slice(start, end), true);
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}
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var result = val[0].string.slice(start, end);
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return val[0] instanceof nodes.Ident
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? new nodes.Ident(result)
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: new nodes.String(result);
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}).raw = true;
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