ce4c83ff
 wxy
初始提交
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var types = require("./lib/types");
var parse = require("./lib/parser").parse;
var Printer = require("./lib/printer").Printer;
function print(node, options) {
return new Printer(options).print(node);
}
function prettyPrint(node, options) {
return new Printer(options).printGenerically(node);
}
function run(transformer, options) {
return runFile(process.argv[2], transformer, options);
}
function runFile(path, transformer, options) {
require("fs").readFile(path, "utf-8", function(err, code) {
if (err) {
console.error(err);
return;
}
runString(code, transformer, options);
});
}
function defaultWriteback(output) {
process.stdout.write(output);
}
function runString(code, transformer, options) {
var writeback = options && options.writeback || defaultWriteback;
transformer(parse(code, options), function(node) {
writeback(print(node, options).code);
});
}
Object.defineProperties(exports, {
/**
* Parse a string of code into an augmented syntax tree suitable for
* arbitrary modification and reprinting.
*/
parse: {
enumerable: true,
value: parse
},
/**
* Traverse and potentially modify an abstract syntax tree using a
* convenient visitor syntax:
*
* recast.visit(ast, {
* names: [],
* visitIdentifier: function(path) {
* var node = path.value;
* this.visitor.names.push(node.name);
* this.traverse(path);
* }
* });
*/
visit: {
enumerable: true,
value: types.visit
},
/**
* Reprint a modified syntax tree using as much of the original source
* code as possible.
*/
print: {
enumerable: true,
value: print
},
/**
* Print without attempting to reuse any original source code.
*/
prettyPrint: {
enumerable: false,
value: prettyPrint
},
/**
* Customized version of require("ast-types").
*/
types: {
enumerable: false,
value: types
},
/**
* Convenient command-line interface (see e.g. example/add-braces).
*/
run: {
enumerable: false,
value: run
}
});
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