commit 0082078ae60c306fe8d8f6bae53afd5c441e6c38 · kitten.sh/reghex

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src/babel/__snapshots__/plugin.test.js.snap

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       // Jest Snapshot v1, https://goo.gl/fbAQLP

     

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       exports[`deduplicates hoisted expressions 1`] = `

     

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       "import { match, __private } from \\"reghex\\";

     

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       const re = /1/;

     

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       var _re_expression = __private.pattern(re);

     

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       const a = function (state) {

     

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         var y1 = state.y,

     

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             x1 = state.x;

     

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         var node = [];

     

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         var x;

     

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         if (x = __private.exec(state, _re_expression)) {

     

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           node.push(x);

     

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         } else {

     

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           state.y = y1;

     

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           state.x = x1;

     

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           return;

     

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         }

     

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         node.tag = 'a';

     

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         return node;

     

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       };

     

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       const b = function (state) {

     

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         var y1 = state.y,

     

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             x1 = state.x;

     

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         var node = [];

     

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         var x;

     

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         if (x = __private.exec(state, _re_expression)) {

     

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           node.push(x);

     

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         } else {

     

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           state.y = y1;

     

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           state.x = x1;

     

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           return;

     

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         }

     

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         node.tag = 'b';

     

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         return node;

     

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       };"

     

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       `;

     

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       exports[`works together with @babel/plugin-transform-modules-commonjs 1`] = `

     

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       "\\"use strict\\";

     

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+21

src/babel/plugin.test.js

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         ).toMatchSnapshot();

     

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       });

     

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       it('deduplicates hoisted expressions', () => {

     

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         const code = `

     

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           import { match } from 'reghex/macro';

     

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           const re = /1/;

     

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           const a = match('a')\`

     

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             \${re}

     

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           \`;

     

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           const b = match('b')\`

     

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             \${re}

     

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           \`;

     

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         `;

     

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         expect(

     

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           transform(code, { babelrc: false, presets: [], plugins: [reghexPlugin] })

     

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             .code

     

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         ).toMatchSnapshot();

     

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       });

     

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       it('works with local recursion', () => {

     

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         // NOTE: A different default name is allowed

     

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         const code = `

+16 -5

src/babel/transform.js

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         let _matchId = t.identifier('match');

     

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         let _privateId = t.identifier(_private);

     

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         const _hoistedExpressions = new Map();

     

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         const privateMethod = (name) =>

     

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           t.memberExpression(t.identifier(_privateId.name), t.identifier(name));

     

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                   expression = expression.body.body[0].argument;

     

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                 }

     

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                 if (

     

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                 const isBindingExpression =

     

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                   t.isIdentifier(expression) &&

     

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                   path.scope.hasBinding(expression.name)

     

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                 ) {

     

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                   path.scope.hasBinding(expression.name);

     

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                 if (isBindingExpression) {

     

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                   const binding = path.scope.getBinding(expression.name);

     

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                   if (t.isVariableDeclarator(binding.path.node)) {

     

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                     const matchPath = binding.path.get('init');

     

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                     if (this.isMatch(matchPath)) return expression;

     

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                     if (this.isMatch(matchPath)) {

     

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                       return expression;

     

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                     } else if (_hoistedExpressions.has(expression.name)) {

     

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                       return t.identifier(_hoistedExpressions.get(expression.name));

     

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                     }

     

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                   }

     

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                 }

     

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                 const id = path.scope.generateUidIdentifier(

     

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                   `${matchName}_expression`

     

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                   isBindingExpression

     

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                     ? `${expression.name}_expression`

     

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                     : `${matchName}_expression`

     

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                 );

     

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                 variableDeclarators.push(

     
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                   )

     

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                 );

     

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                 if (t.isIdentifier(expression)) {

     

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                   _hoistedExpressions.set(expression.name, id.name);

     

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                 }

     

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                 return id;

     

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               }

     

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             );