diff options
author | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
commit | de98e0b232509d5f40c135d540a70e415272ff85 (patch) | |
tree | a79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/bluebird/js/release/thenables.js | |
parent | e0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff) |
node_modules
Diffstat (limited to 'node_modules/bluebird/js/release/thenables.js')
-rw-r--r-- | node_modules/bluebird/js/release/thenables.js | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/node_modules/bluebird/js/release/thenables.js b/node_modules/bluebird/js/release/thenables.js new file mode 100644 index 000000000..d6ab9aa27 --- /dev/null +++ b/node_modules/bluebird/js/release/thenables.js @@ -0,0 +1,86 @@ +"use strict"; +module.exports = function(Promise, INTERNAL) { +var util = require("./util"); +var errorObj = util.errorObj; +var isObject = util.isObject; + +function tryConvertToPromise(obj, context) { + if (isObject(obj)) { + if (obj instanceof Promise) return obj; + var then = getThen(obj); + if (then === errorObj) { + if (context) context._pushContext(); + var ret = Promise.reject(then.e); + if (context) context._popContext(); + return ret; + } else if (typeof then === "function") { + if (isAnyBluebirdPromise(obj)) { + var ret = new Promise(INTERNAL); + obj._then( + ret._fulfill, + ret._reject, + undefined, + ret, + null + ); + return ret; + } + return doThenable(obj, then, context); + } + } + return obj; +} + +function doGetThen(obj) { + return obj.then; +} + +function getThen(obj) { + try { + return doGetThen(obj); + } catch (e) { + errorObj.e = e; + return errorObj; + } +} + +var hasProp = {}.hasOwnProperty; +function isAnyBluebirdPromise(obj) { + try { + return hasProp.call(obj, "_promise0"); + } catch (e) { + return false; + } +} + +function doThenable(x, then, context) { + var promise = new Promise(INTERNAL); + var ret = promise; + if (context) context._pushContext(); + promise._captureStackTrace(); + if (context) context._popContext(); + var synchronous = true; + var result = util.tryCatch(then).call(x, resolve, reject); + synchronous = false; + + if (promise && result === errorObj) { + promise._rejectCallback(result.e, true, true); + promise = null; + } + + function resolve(value) { + if (!promise) return; + promise._resolveCallback(value); + promise = null; + } + + function reject(reason) { + if (!promise) return; + promise._rejectCallback(reason, synchronous, true); + promise = null; + } + return ret; +} + +return tryConvertToPromise; +}; |