You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.4 KiB
JavaScript
55 lines
1.4 KiB
JavaScript
"use strict";
|
|
|
|
let GrammarError = require("./grammar-error");
|
|
let compiler = require("./compiler");
|
|
let parser = require("./parser");
|
|
|
|
let peg = {
|
|
// PEG.js version (uses semantic versioning).
|
|
VERSION: "0.10.0",
|
|
|
|
GrammarError: GrammarError,
|
|
parser: parser,
|
|
compiler: compiler,
|
|
|
|
// 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 = options !== undefined ? options : {};
|
|
|
|
function convertPasses(passes) {
|
|
let converted = {};
|
|
|
|
Object.keys(passes).forEach(stage => {
|
|
converted[stage] = Object.keys(passes[stage])
|
|
.map(name => passes[stage][name]);
|
|
});
|
|
|
|
return converted;
|
|
}
|
|
|
|
let plugins = "plugins" in options ? options.plugins : [];
|
|
let config = {
|
|
parser: peg.parser,
|
|
passes: convertPasses(peg.compiler.passes)
|
|
};
|
|
|
|
plugins.forEach(p => { p.use(config, options); });
|
|
|
|
return peg.compiler.compile(
|
|
config.parser.parse(grammar),
|
|
config.passes,
|
|
options
|
|
);
|
|
}
|
|
};
|
|
|
|
module.exports = peg;
|