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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
|---|---|---|
| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/@babel/plugin-proposal-async-generator-functions/lib/for-await.js | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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Diffstat (limited to 'node_modules/@babel/plugin-proposal-async-generator-functions/lib/for-await.js')
| -rw-r--r-- | node_modules/@babel/plugin-proposal-async-generator-functions/lib/for-await.js | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/node_modules/@babel/plugin-proposal-async-generator-functions/lib/for-await.js b/node_modules/@babel/plugin-proposal-async-generator-functions/lib/for-await.js new file mode 100644 index 00000000..54571bc3 --- /dev/null +++ b/node_modules/@babel/plugin-proposal-async-generator-functions/lib/for-await.js @@ -0,0 +1,95 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = _default; + +function _core() { + const data = require("@babel/core"); + + _core = function _core() { + return data; + }; + + return data; +} + +const buildForAwait = (0, _core().template)(` + async function wrapper() { + var ITERATOR_COMPLETION = true; + var ITERATOR_HAD_ERROR_KEY = false; + var ITERATOR_ERROR_KEY; + try { + for ( + var ITERATOR_KEY = GET_ITERATOR(OBJECT), STEP_KEY, STEP_VALUE; + ( + STEP_KEY = await ITERATOR_KEY.next(), + ITERATOR_COMPLETION = STEP_KEY.done, + STEP_VALUE = await STEP_KEY.value, + !ITERATOR_COMPLETION + ); + ITERATOR_COMPLETION = true) { + } + } catch (err) { + ITERATOR_HAD_ERROR_KEY = true; + ITERATOR_ERROR_KEY = err; + } finally { + try { + if (!ITERATOR_COMPLETION && ITERATOR_KEY.return != null) { + await ITERATOR_KEY.return(); + } + } finally { + if (ITERATOR_HAD_ERROR_KEY) { + throw ITERATOR_ERROR_KEY; + } + } + } + } +`); + +function _default(path, { + getAsyncIterator +}) { + const node = path.node, + scope = path.scope, + parent = path.parent; + const stepKey = scope.generateUidIdentifier("step"); + const stepValue = scope.generateUidIdentifier("value"); + const left = node.left; + let declar; + + if (_core().types.isIdentifier(left) || _core().types.isPattern(left) || _core().types.isMemberExpression(left)) { + declar = _core().types.expressionStatement(_core().types.assignmentExpression("=", left, stepValue)); + } else if (_core().types.isVariableDeclaration(left)) { + declar = _core().types.variableDeclaration(left.kind, [_core().types.variableDeclarator(left.declarations[0].id, stepValue)]); + } + + let template = buildForAwait({ + ITERATOR_HAD_ERROR_KEY: scope.generateUidIdentifier("didIteratorError"), + ITERATOR_COMPLETION: scope.generateUidIdentifier("iteratorNormalCompletion"), + ITERATOR_ERROR_KEY: scope.generateUidIdentifier("iteratorError"), + ITERATOR_KEY: scope.generateUidIdentifier("iterator"), + GET_ITERATOR: getAsyncIterator, + OBJECT: node.right, + STEP_VALUE: stepValue, + STEP_KEY: stepKey + }); + template = template.body.body; + + const isLabeledParent = _core().types.isLabeledStatement(parent); + + const tryBody = template[3].block.body; + const loop = tryBody[0]; + + if (isLabeledParent) { + tryBody[0] = _core().types.labeledStatement(parent.label, loop); + } + + return { + replaceParent: isLabeledParent, + node: template, + declar, + loop + }; +}
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