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56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
"use strict";
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const GrammarError = require( "./grammar-error" );
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const ast = require( "./ast" );
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const compiler = require( "./compiler" );
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const parser = require( "./parser" );
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const util = require( "./util" );
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const peg = {
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// PEG.js version (uses semantic versioning).
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VERSION: require( "../package.json" ).version,
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GrammarError: GrammarError,
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ast: ast,
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parser: parser,
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compiler: compiler,
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util: util,
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// Generates a parser from a specified grammar and returns it.
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//
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// The grammar must be a string in the format described by the metagramar in
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// the parser.pegjs file.
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//
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// Throws |peg.parser.SyntaxError| if the grammar contains a syntax error or
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// |peg.GrammarError| if it contains a semantic error. Note that not all
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// errors are detected during the generation and some may protrude to the
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// generated parser and cause its malfunction.
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generate( grammar, options ) {
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options = typeof options !== "undefined" ? options : {};
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const session = new compiler.Session( {
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passes: util.convertPasses( compiler.passes )
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} );
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if ( Array.isArray( options.plugins ) )
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options.plugins.forEach( p => {
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if ( typeof p.use !== "function" ) return;
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p.use( session, options );
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} );
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return compiler.compile(
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session.parse( grammar, options.parser || {} ),
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session,
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options
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);
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}
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};
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module.exports = peg;
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