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language.ts
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language.ts
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import { LRLanguage, LanguageSupport, syntaxHighlighting } from '@codemirror/language';
import { linter } from '@codemirror/lint';
import { styleTags, tags } from '@lezer/highlight';
import type { IDecorator, IModel } from '../model';
import { buildCompletion } from './autocomplete';
import { decorator } from './decorator';
import { parser } from './grammar';
import { highlighter } from './highlighter';
import { buildQueryLinter } from './linter';
export const queryLanguage = (model: IModel, appDecorator?: IDecorator) => {
const parserWithMetadata = parser.configure({
props: [
// Properties are Terms of the grammar
styleTags({
Property: tags.propertyName,
Value: tags.string,
'EqualOp NotEqualOp': tags.operator,
'NotOperator LogicalAndOp LogicalOrOp': tags.logicOperator,
'OpenParenthesis ClosingParenthesis': tags.paren,
}),
],
});
const languageDefinition = LRLanguage.define({
name: 'queryLanguage',
parser: parserWithMetadata,
languageData: {
autocomplete: buildCompletion(model.getSuggest()),
},
});
const lint = buildQueryLinter(model.getValidator());
const support = [
syntaxHighlighting(highlighter),
linter(view => lint(view.state)),
];
if (appDecorator) {
support.push(decorator(appDecorator));
}
return new LanguageSupport(languageDefinition, support);
};