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// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::io::Write;
use rustc_serialize::json::as_json;
use Dump;
use rls_data::{Analysis, Import, Def, CratePreludeData, Format, Relation};
// A dumper to dump a restricted set of JSON information, designed for use with
// libraries distributed without their source. Clients are likely to use type
// information here, and (for example) generate Rustdoc URLs, but don't need
// information for navigating the source of the crate.
// Relative to the regular JSON save-analysis info, this form is filtered to
// remove non-visible items.
pub struct JsonApiDumper<'b, W: Write + 'b> {
output: &'b mut W,
result: Analysis,
}
impl<'b, W: Write> JsonApiDumper<'b, W> {
pub fn new(writer: &'b mut W) -> JsonApiDumper<'b, W> {
let mut result = Analysis::new();
result.kind = Format::JsonApi;
JsonApiDumper { output: writer, result }
}
}
impl<'b, W: Write> Drop for JsonApiDumper<'b, W> {
fn drop(&mut self) {
if let Err(_) = write!(self.output, "{}", as_json(&self.result)) {
error!("Error writing output");
}
}
}
impl<'b, W: Write + 'b> Dump for JsonApiDumper<'b, W> {
fn crate_prelude(&mut self, data: CratePreludeData) {
self.result.prelude = Some(data)
}
fn dump_relation(&mut self, data: Relation) {
self.result.relations.push(data);
}
fn import(&mut self, public: bool, import: Import) {
if public {
self.result.imports.push(import);
}
}
fn dump_def(&mut self, public: bool, mut data: Def) {
if public {
data.attributes = vec![];
self.result.defs.push(data);
}
}
}
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