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54 lines
1.4 KiB
JavaScript

"use strict";
const GrammarError = require( "./grammar-error" );
const ast = require( "./ast" );
const compiler = require( "./compiler" );
const parser = require( "./parser" );
const util = require( "./util" );
const peg = {
// PEG.js version (uses semantic versioning).
VERSION: "0.11.0-dev",
GrammarError: GrammarError,
ast: ast,
parser: parser,
compiler: compiler,
util: util,
// Generates a parser from a specified grammar and returns it.
//
// The grammar must be a string in the format described by the metagramar in
// the parser.pegjs file.
//
// Throws |peg.parser.SyntaxError| if the grammar contains a syntax error or
// |peg.GrammarError| if it contains a semantic error. Note that not all
// errors are detected during the generation and some may protrude to the
// generated parser and cause its malfunction.
generate( grammar, options ) {
options = typeof options !== "undefined" ? options : {};
const plugins = "plugins" in options ? options.plugins : [];
const session = new compiler.Session( {
grammar: grammar,
passes: util.convertPasses( compiler.passes )
} );
plugins.forEach( p => {
p.use( session, options );
} );
return compiler.compile(
session.parse( grammar, options.parser || {} ),
session,
options
);
}
};
module.exports = peg;