Микропроцессорные средства и системы / 4 Вариант / 1_ / 1 лабс АФ / images / survey-library-master / src / expressions / ReadMe

## Usage grammar.pegjs

### Command (from project root) to generate parser [grammar.pegjs](https://github.com/surveyjs/surveyjs/tree/master/src/expressions/grammar.pegjs)
```
pegjs --plugin ./node_modules/ts-pegjs/src/tspegjs --extra-options-file src/expressions/pegconfig.json -o src/expressions/expressionParser.ts --cache src/expressions/grammar.pegjs
```

[pegconfig.json](https://github.com/surveyjs/surveyjs/tree/master/src/expressions/pegconfig.json) is necessary to use ```type-script``` plugin

```
node ./node_modules/pegjs/bin/pegjs --plugin ./node_modules/ts-pegjs/src/tspegjs --extra-options-file src/expressions/pegconfig.json -o src/expressions/expressionParser.ts --cache src/expressions/grammar.pegjs
```