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62 lines
1.3 KiB
JavaScript
62 lines
1.3 KiB
JavaScript
/* eslint no-unused-vars: 0 */
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"use strict";
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const ast = require( "../ast" );
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const GrammarError = require( "../grammar-error" );
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const opcodes = require( "./opcodes" );
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const parser = require( "../parser" );
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function fatal( message, location ) {
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if ( typeof location !== "undefined" )
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throw new GrammarError( message, location );
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throw new Error( message );
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}
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class Session {
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constructor( options ) {
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options = typeof options !== "undefined" ? options : {};
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this.grammar = options.grammar;
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this.opcodes = options.opcodes || opcodes;
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this.parser = options.parser || parser;
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this.passes = options.passes || [];
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this.visitor = options.visitor || ast.visitor;
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if ( typeof options.warn === "function" ) this.warn = options.warn;
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if ( typeof options.error === "function" ) this.error = options.error;
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Object.defineProperty( this, "fatal", { value: fatal } );
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}
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parse( input, options ) {
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return this.parser.parse( input, options );
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}
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buildVisitor( functions ) {
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return this.visitor.build( functions );
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}
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warn( message, location ) {}
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error( message, location ) {
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fatal( message, location );
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}
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}
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module.exports = Session;
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