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.
51 lines
1.4 KiB
JavaScript
51 lines
1.4 KiB
JavaScript
var utils = require("./utils");
|
|
|
|
module.exports = {
|
|
/* PEG.js version (uses semantic versioning). */
|
|
VERSION: "0.8.0",
|
|
|
|
GrammarError: require("./grammar-error"),
|
|
parser: require("./parser"),
|
|
compiler: require("./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.
|
|
*/
|
|
buildParser: function(grammar) {
|
|
function convertPasses(passes) {
|
|
var converted = {}, stage;
|
|
|
|
for (stage in passes) {
|
|
if (passes.hasOwnProperty(stage)) {
|
|
converted[stage] = utils.values(passes[stage]);
|
|
}
|
|
}
|
|
|
|
return converted;
|
|
}
|
|
|
|
var options = arguments.length > 1 ? utils.clone(arguments[1]) : {},
|
|
plugins = "plugins" in options ? options.plugins : [],
|
|
config = {
|
|
parser: this.parser,
|
|
passes: convertPasses(this.compiler.passes)
|
|
};
|
|
|
|
utils.each(plugins, function(p) { p.use(config, options); });
|
|
|
|
return this.compiler.compile(
|
|
config.parser.parse(grammar),
|
|
config.passes,
|
|
options
|
|
);
|
|
}
|
|
};
|