1581 lines
64 KiB
Rust
1581 lines
64 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Write the output of rustc's analysis to an implementor of Dump. The data is
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//! primarily designed to be used as input to the DXR tool, specifically its
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//! Rust plugin. It could also be used by IDEs or other code browsing, search, or
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//! cross-referencing tools.
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//!
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//! Dumping the analysis is implemented by walking the AST and getting a bunch of
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//! info out from all over the place. We use Def IDs to identify objects. The
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//! tricky part is getting syntactic (span, source text) and semantic (reference
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//! Def IDs) information for parts of expressions which the compiler has discarded.
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//! E.g., in a path `foo::bar::baz`, the compiler only keeps a span for the whole
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//! path and a reference to `baz`, but we want spans and references for all three
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//! idents.
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//!
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//! SpanUtils is used to manipulate spans. In particular, to extract sub-spans
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//! from spans (e.g., the span for `bar` from the above example path).
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//! DumpVisitor walks the AST and processes it, and an implementor of Dump
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//! is used for recording the output in a format-agnostic way (see CsvDumper
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//! for an example).
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use rustc::hir;
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use rustc::hir::def::Def;
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use rustc::hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
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use rustc::hir::map::{Node, NodeItem};
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use rustc::session::Session;
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use rustc::ty::{self, TyCtxt, AssociatedItemContainer};
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use std::collections::HashSet;
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use std::collections::hash_map::DefaultHasher;
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use std::hash::*;
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use syntax::ast::{self, NodeId, PatKind, Attribute, CRATE_NODE_ID};
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use syntax::parse::token;
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use syntax::symbol::keywords;
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use syntax::visit::{self, Visitor};
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use syntax::print::pprust::{path_to_string, ty_to_string, bounds_to_string, generics_to_string};
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use syntax::ptr::P;
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use syntax::codemap::Spanned;
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use syntax_pos::*;
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use super::{escape, generated_code, SaveContext, PathCollector, docs_for_attrs};
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use super::data::*;
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use super::dump::Dump;
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use super::external_data::{Lower, make_def_id};
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use super::span_utils::SpanUtils;
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use super::recorder;
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macro_rules! down_cast_data {
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($id:ident, $kind:ident, $sp:expr) => {
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let $id = if let super::Data::$kind(data) = $id {
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data
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} else {
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span_bug!($sp, "unexpected data kind: {:?}", $id);
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};
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};
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}
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pub struct DumpVisitor<'l, 'tcx: 'l, 'll, D: 'll> {
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save_ctxt: SaveContext<'l, 'tcx>,
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sess: &'l Session,
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tcx: TyCtxt<'l, 'tcx, 'tcx>,
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dumper: &'ll mut D,
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span: SpanUtils<'l>,
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cur_scope: NodeId,
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// Set of macro definition (callee) spans, and the set
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// of macro use (callsite) spans. We store these to ensure
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// we only write one macro def per unique macro definition, and
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// one macro use per unique callsite span.
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mac_defs: HashSet<Span>,
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mac_uses: HashSet<Span>,
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}
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impl<'l, 'tcx: 'l, 'll, D: Dump + 'll> DumpVisitor<'l, 'tcx, 'll, D> {
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pub fn new(save_ctxt: SaveContext<'l, 'tcx>,
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dumper: &'ll mut D)
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-> DumpVisitor<'l, 'tcx, 'll, D> {
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let span_utils = SpanUtils::new(&save_ctxt.tcx.sess);
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DumpVisitor {
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sess: &save_ctxt.tcx.sess,
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tcx: save_ctxt.tcx,
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save_ctxt: save_ctxt,
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dumper: dumper,
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span: span_utils.clone(),
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cur_scope: CRATE_NODE_ID,
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mac_defs: HashSet::new(),
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mac_uses: HashSet::new(),
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}
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}
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fn nest_scope<F>(&mut self, scope_id: NodeId, f: F)
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where F: FnOnce(&mut DumpVisitor<'l, 'tcx, 'll, D>)
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{
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let parent_scope = self.cur_scope;
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self.cur_scope = scope_id;
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f(self);
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self.cur_scope = parent_scope;
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}
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fn nest_tables<F>(&mut self, item_id: NodeId, f: F)
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where F: FnOnce(&mut DumpVisitor<'l, 'tcx, 'll, D>)
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{
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let old_tables = self.save_ctxt.tables;
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let item_def_id = self.tcx.map.local_def_id(item_id);
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self.save_ctxt.tables = self.tcx.item_tables(item_def_id);
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f(self);
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self.save_ctxt.tables = old_tables;
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}
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pub fn dump_crate_info(&mut self, name: &str, krate: &ast::Crate) {
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let source_file = self.tcx.sess.local_crate_source_file.as_ref();
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let crate_root = source_file.map(|source_file| {
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match source_file.file_name() {
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Some(_) => source_file.parent().unwrap().display().to_string(),
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None => source_file.display().to_string(),
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}
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});
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// Info about all the external crates referenced from this crate.
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let external_crates = self.save_ctxt.get_external_crates().into_iter().map(|c| {
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let lo_loc = self.span.sess.codemap().lookup_char_pos(c.span.lo);
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ExternalCrateData {
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name: c.name,
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num: CrateNum::from_u32(c.number),
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file_name: SpanUtils::make_path_string(&lo_loc.file.name),
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}
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}).collect();
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// The current crate.
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let data = CratePreludeData {
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crate_name: name.into(),
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crate_root: crate_root.unwrap_or("<no source>".to_owned()),
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external_crates: external_crates,
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span: krate.span,
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};
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self.dumper.crate_prelude(data.lower(self.tcx));
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}
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// Return all non-empty prefixes of a path.
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// For each prefix, we return the span for the last segment in the prefix and
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// a str representation of the entire prefix.
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fn process_path_prefixes(&self, path: &ast::Path) -> Vec<(Span, String)> {
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let spans = self.span.spans_for_path_segments(path);
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let segments = &path.segments[if path.is_global() { 1 } else { 0 }..];
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// Paths to enums seem to not match their spans - the span includes all the
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// variants too. But they seem to always be at the end, so I hope we can cope with
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// always using the first ones. So, only error out if we don't have enough spans.
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// What could go wrong...?
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if spans.len() < segments.len() {
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if generated_code(path.span) {
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return vec![];
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}
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error!("Mis-calculated spans for path '{}'. Found {} spans, expected {}. Found spans:",
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path_to_string(path),
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spans.len(),
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segments.len());
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for s in &spans {
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let loc = self.sess.codemap().lookup_char_pos(s.lo);
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error!(" '{}' in {}, line {}",
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self.span.snippet(*s),
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loc.file.name,
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loc.line);
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}
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error!(" master span: {:?}: `{}`", path.span, self.span.snippet(path.span));
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return vec![];
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}
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let mut result: Vec<(Span, String)> = vec![];
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let mut segs = vec![];
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for (i, (seg, span)) in segments.iter().zip(&spans).enumerate() {
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segs.push(seg.clone());
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let sub_path = ast::Path {
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span: *span, // span for the last segment
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segments: segs,
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};
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let qualname = if i == 0 && path.is_global() {
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format!("::{}", path_to_string(&sub_path))
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} else {
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path_to_string(&sub_path)
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};
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result.push((*span, qualname));
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segs = sub_path.segments;
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}
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result
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}
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fn write_sub_paths(&mut self, path: &ast::Path) {
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let sub_paths = self.process_path_prefixes(path);
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for (span, qualname) in sub_paths {
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self.dumper.mod_ref(ModRefData {
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span: span,
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qualname: qualname,
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scope: self.cur_scope,
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ref_id: None
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}.lower(self.tcx));
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}
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}
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// As write_sub_paths, but does not process the last ident in the path (assuming it
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// will be processed elsewhere). See note on write_sub_paths about global.
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fn write_sub_paths_truncated(&mut self, path: &ast::Path) {
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let sub_paths = self.process_path_prefixes(path);
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let len = sub_paths.len();
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if len <= 1 {
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return;
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}
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for (span, qualname) in sub_paths.into_iter().take(len - 1) {
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self.dumper.mod_ref(ModRefData {
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span: span,
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qualname: qualname,
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scope: self.cur_scope,
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ref_id: None
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}.lower(self.tcx));
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}
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}
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// As write_sub_paths, but expects a path of the form module_path::trait::method
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// Where trait could actually be a struct too.
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fn write_sub_path_trait_truncated(&mut self, path: &ast::Path) {
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let sub_paths = self.process_path_prefixes(path);
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let len = sub_paths.len();
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if len <= 1 {
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return;
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}
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let sub_paths = &sub_paths[.. (len-1)];
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// write the trait part of the sub-path
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let (ref span, ref qualname) = sub_paths[len-2];
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self.dumper.type_ref(TypeRefData {
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ref_id: None,
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span: *span,
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qualname: qualname.to_owned(),
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scope: CRATE_NODE_ID
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}.lower(self.tcx));
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// write the other sub-paths
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if len <= 2 {
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return;
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}
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let sub_paths = &sub_paths[..len-2];
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for &(ref span, ref qualname) in sub_paths {
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self.dumper.mod_ref(ModRefData {
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span: *span,
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qualname: qualname.to_owned(),
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scope: self.cur_scope,
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ref_id: None
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}.lower(self.tcx));
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}
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}
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fn lookup_def_id(&self, ref_id: NodeId) -> Option<DefId> {
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match self.save_ctxt.get_path_def(ref_id) {
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Def::PrimTy(..) | Def::SelfTy(..) | Def::Err => None,
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def => Some(def.def_id()),
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}
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}
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fn process_def_kind(&mut self,
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ref_id: NodeId,
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span: Span,
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sub_span: Option<Span>,
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def_id: DefId,
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scope: NodeId) {
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if self.span.filter_generated(sub_span, span) {
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return;
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}
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let def = self.save_ctxt.get_path_def(ref_id);
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match def {
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Def::Mod(_) => {
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self.dumper.mod_ref(ModRefData {
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span: sub_span.expect("No span found for mod ref"),
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ref_id: Some(def_id),
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scope: scope,
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qualname: String::new()
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}.lower(self.tcx));
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}
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Def::Struct(..) |
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Def::Variant(..) |
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Def::Union(..) |
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Def::Enum(..) |
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Def::TyAlias(..) |
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Def::Trait(_) => {
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self.dumper.type_ref(TypeRefData {
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span: sub_span.expect("No span found for type ref"),
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ref_id: Some(def_id),
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scope: scope,
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qualname: String::new()
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}.lower(self.tcx));
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}
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Def::Static(..) |
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Def::Const(..) |
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Def::StructCtor(..) |
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Def::VariantCtor(..) => {
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self.dumper.variable_ref(VariableRefData {
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span: sub_span.expect("No span found for var ref"),
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ref_id: def_id,
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scope: scope,
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name: String::new()
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}.lower(self.tcx));
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}
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Def::Fn(..) => {
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self.dumper.function_ref(FunctionRefData {
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span: sub_span.expect("No span found for fn ref"),
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ref_id: def_id,
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scope: scope
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}.lower(self.tcx));
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}
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Def::Local(..) |
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Def::Upvar(..) |
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Def::SelfTy(..) |
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Def::Label(_) |
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Def::TyParam(..) |
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Def::Method(..) |
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Def::AssociatedTy(..) |
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Def::AssociatedConst(..) |
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Def::PrimTy(_) |
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Def::Macro(_) |
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Def::Err => {
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span_bug!(span,
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"process_def_kind for unexpected item: {:?}",
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def);
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}
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}
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}
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fn process_formals(&mut self, formals: &'l [ast::Arg], qualname: &str) {
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for arg in formals {
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self.visit_pat(&arg.pat);
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let mut collector = PathCollector::new();
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collector.visit_pat(&arg.pat);
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let span_utils = self.span.clone();
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for &(id, ref p, ..) in &collector.collected_paths {
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let typ = match self.save_ctxt.tables.node_types.get(&id) {
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Some(s) => s.to_string(),
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None => continue,
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};
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// get the span only for the name of the variable (I hope the path is only ever a
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// variable name, but who knows?)
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let sub_span = span_utils.span_for_last_ident(p.span);
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if !self.span.filter_generated(sub_span, p.span) {
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self.dumper.variable(VariableData {
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id: id,
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kind: VariableKind::Local,
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span: sub_span.expect("No span found for variable"),
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name: path_to_string(p),
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qualname: format!("{}::{}", qualname, path_to_string(p)),
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type_value: typ,
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value: String::new(),
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scope: CRATE_NODE_ID,
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parent: None,
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visibility: Visibility::Inherited,
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docs: String::new(),
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sig: None,
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}.lower(self.tcx));
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}
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}
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}
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}
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fn process_method(&mut self,
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sig: &'l ast::MethodSig,
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body: Option<&'l ast::Block>,
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id: ast::NodeId,
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name: ast::Name,
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vis: Visibility,
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attrs: &'l [Attribute],
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span: Span) {
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debug!("process_method: {}:{}", id, name);
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if let Some(method_data) = self.save_ctxt.get_method_data(id, name, span) {
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let sig_str = ::make_signature(&sig.decl, &sig.generics);
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if body.is_some() {
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self.nest_tables(id, |v| {
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v.process_formals(&sig.decl.inputs, &method_data.qualname)
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});
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}
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// If the method is defined in an impl, then try and find the corresponding
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// method decl in a trait, and if there is one, make a decl_id for it. This
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// requires looking up the impl, then the trait, then searching for a method
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// with the right name.
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if !self.span.filter_generated(Some(method_data.span), span) {
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let container =
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self.tcx.associated_item(self.tcx.map.local_def_id(id)).container;
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let mut trait_id;
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let mut decl_id = None;
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match container {
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AssociatedItemContainer::ImplContainer(id) => {
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trait_id = self.tcx.trait_id_of_impl(id);
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match trait_id {
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Some(id) => {
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for item in self.tcx.associated_items(id) {
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if item.kind == ty::AssociatedKind::Method {
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if item.name == name {
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decl_id = Some(item.def_id);
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break;
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}
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}
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}
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}
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None => {
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if let Some(NodeItem(item)) = self.tcx.map.get_if_local(id) {
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if let hir::ItemImpl(_, _, _, _, ref ty, _) = item.node {
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trait_id = self.lookup_def_id(ty.id);
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}
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}
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}
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}
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}
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AssociatedItemContainer::TraitContainer(id) => {
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trait_id = Some(id);
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}
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}
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self.dumper.method(MethodData {
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id: method_data.id,
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name: method_data.name,
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span: method_data.span,
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scope: method_data.scope,
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qualname: method_data.qualname.clone(),
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value: sig_str,
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decl_id: decl_id,
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parent: trait_id,
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visibility: vis,
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docs: docs_for_attrs(attrs),
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sig: method_data.sig,
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}.lower(self.tcx));
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}
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self.process_generic_params(&sig.generics, span, &method_data.qualname, id);
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}
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// walk arg and return types
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for arg in &sig.decl.inputs {
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self.visit_ty(&arg.ty);
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}
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if let ast::FunctionRetTy::Ty(ref ret_ty) = sig.decl.output {
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self.visit_ty(ret_ty);
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}
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// walk the fn body
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if let Some(body) = body {
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self.nest_tables(id, |v| v.nest_scope(id, |v| v.visit_block(body)));
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}
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}
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fn process_trait_ref(&mut self, trait_ref: &'l ast::TraitRef) {
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let trait_ref_data = self.save_ctxt.get_trait_ref_data(trait_ref, self.cur_scope);
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if let Some(trait_ref_data) = trait_ref_data {
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if !self.span.filter_generated(Some(trait_ref_data.span), trait_ref.path.span) {
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self.dumper.type_ref(trait_ref_data.lower(self.tcx));
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}
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}
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self.process_path(trait_ref.ref_id, &trait_ref.path, Some(recorder::TypeRef));
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}
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|
|
fn process_struct_field_def(&mut self, field: &ast::StructField, parent_id: NodeId) {
|
|
let field_data = self.save_ctxt.get_field_data(field, parent_id);
|
|
if let Some(mut field_data) = field_data {
|
|
if !self.span.filter_generated(Some(field_data.span), field.span) {
|
|
field_data.value = String::new();
|
|
self.dumper.variable(field_data.lower(self.tcx));
|
|
}
|
|
}
|
|
}
|
|
|
|
// Dump generic params bindings, then visit_generics
|
|
fn process_generic_params(&mut self,
|
|
generics: &'l ast::Generics,
|
|
full_span: Span,
|
|
prefix: &str,
|
|
id: NodeId) {
|
|
// We can't only use visit_generics since we don't have spans for param
|
|
// bindings, so we reparse the full_span to get those sub spans.
|
|
// However full span is the entire enum/fn/struct block, so we only want
|
|
// the first few to match the number of generics we're looking for.
|
|
let param_sub_spans = self.span.spans_for_ty_params(full_span,
|
|
(generics.ty_params.len() as isize));
|
|
for (param, param_ss) in generics.ty_params.iter().zip(param_sub_spans) {
|
|
let name = escape(self.span.snippet(param_ss));
|
|
// Append $id to name to make sure each one is unique
|
|
let qualname = format!("{}::{}${}",
|
|
prefix,
|
|
name,
|
|
id);
|
|
if !self.span.filter_generated(Some(param_ss), full_span) {
|
|
self.dumper.typedef(TypeDefData {
|
|
span: param_ss,
|
|
name: name,
|
|
id: param.id,
|
|
qualname: qualname,
|
|
value: String::new(),
|
|
visibility: Visibility::Inherited,
|
|
parent: None,
|
|
docs: String::new(),
|
|
sig: None,
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
self.visit_generics(generics);
|
|
}
|
|
|
|
fn process_fn(&mut self,
|
|
item: &'l ast::Item,
|
|
decl: &'l ast::FnDecl,
|
|
ty_params: &'l ast::Generics,
|
|
body: &'l ast::Block) {
|
|
if let Some(fn_data) = self.save_ctxt.get_item_data(item) {
|
|
down_cast_data!(fn_data, FunctionData, item.span);
|
|
if !self.span.filter_generated(Some(fn_data.span), item.span) {
|
|
self.dumper.function(fn_data.clone().lower(self.tcx));
|
|
}
|
|
|
|
self.nest_tables(item.id, |v| v.process_formals(&decl.inputs, &fn_data.qualname));
|
|
self.process_generic_params(ty_params, item.span, &fn_data.qualname, item.id);
|
|
}
|
|
|
|
for arg in &decl.inputs {
|
|
self.visit_ty(&arg.ty);
|
|
}
|
|
|
|
if let ast::FunctionRetTy::Ty(ref ret_ty) = decl.output {
|
|
self.visit_ty(&ret_ty);
|
|
}
|
|
|
|
self.nest_tables(item.id, |v| v.nest_scope(item.id, |v| v.visit_block(&body)));
|
|
}
|
|
|
|
fn process_static_or_const_item(&mut self,
|
|
item: &'l ast::Item,
|
|
typ: &'l ast::Ty,
|
|
expr: &'l ast::Expr) {
|
|
if let Some(var_data) = self.save_ctxt.get_item_data(item) {
|
|
down_cast_data!(var_data, VariableData, item.span);
|
|
if !self.span.filter_generated(Some(var_data.span), item.span) {
|
|
self.dumper.variable(var_data.lower(self.tcx));
|
|
}
|
|
}
|
|
self.visit_ty(&typ);
|
|
self.visit_expr(expr);
|
|
}
|
|
|
|
fn process_assoc_const(&mut self,
|
|
id: ast::NodeId,
|
|
name: ast::Name,
|
|
span: Span,
|
|
typ: &'l ast::Ty,
|
|
expr: &'l ast::Expr,
|
|
parent_id: DefId,
|
|
vis: Visibility,
|
|
attrs: &'l [Attribute]) {
|
|
let qualname = format!("::{}", self.tcx.node_path_str(id));
|
|
|
|
let sub_span = self.span.sub_span_after_keyword(span, keywords::Const);
|
|
|
|
if !self.span.filter_generated(sub_span, span) {
|
|
self.dumper.variable(VariableData {
|
|
span: sub_span.expect("No span found for variable"),
|
|
kind: VariableKind::Const,
|
|
id: id,
|
|
name: name.to_string(),
|
|
qualname: qualname,
|
|
value: self.span.snippet(expr.span),
|
|
type_value: ty_to_string(&typ),
|
|
scope: self.cur_scope,
|
|
parent: Some(parent_id),
|
|
visibility: vis,
|
|
docs: docs_for_attrs(attrs),
|
|
sig: None,
|
|
}.lower(self.tcx));
|
|
}
|
|
|
|
// walk type and init value
|
|
self.visit_ty(typ);
|
|
self.visit_expr(expr);
|
|
}
|
|
|
|
// FIXME tuple structs should generate tuple-specific data.
|
|
fn process_struct(&mut self,
|
|
item: &'l ast::Item,
|
|
def: &'l ast::VariantData,
|
|
ty_params: &'l ast::Generics) {
|
|
let name = item.ident.to_string();
|
|
let qualname = format!("::{}", self.tcx.node_path_str(item.id));
|
|
|
|
let sub_span = self.span.sub_span_after_keyword(item.span, keywords::Struct);
|
|
let (val, fields) =
|
|
if let ast::ItemKind::Struct(ast::VariantData::Struct(ref fields, _), _) = item.node
|
|
{
|
|
let fields_str = fields.iter()
|
|
.enumerate()
|
|
.map(|(i, f)| f.ident.map(|i| i.to_string())
|
|
.unwrap_or(i.to_string()))
|
|
.collect::<Vec<_>>()
|
|
.join(", ");
|
|
(format!("{} {{ {} }}", name, fields_str), fields.iter().map(|f| f.id).collect())
|
|
} else {
|
|
(String::new(), vec![])
|
|
};
|
|
|
|
if !self.span.filter_generated(sub_span, item.span) {
|
|
self.dumper.struct_data(StructData {
|
|
span: sub_span.expect("No span found for struct"),
|
|
id: item.id,
|
|
name: name,
|
|
ctor_id: def.id(),
|
|
qualname: qualname.clone(),
|
|
scope: self.cur_scope,
|
|
value: val,
|
|
fields: fields,
|
|
visibility: From::from(&item.vis),
|
|
docs: docs_for_attrs(&item.attrs),
|
|
sig: self.save_ctxt.sig_base(item),
|
|
}.lower(self.tcx));
|
|
}
|
|
|
|
for field in def.fields() {
|
|
self.process_struct_field_def(field, item.id);
|
|
self.visit_ty(&field.ty);
|
|
}
|
|
|
|
self.process_generic_params(ty_params, item.span, &qualname, item.id);
|
|
}
|
|
|
|
fn process_enum(&mut self,
|
|
item: &'l ast::Item,
|
|
enum_definition: &'l ast::EnumDef,
|
|
ty_params: &'l ast::Generics) {
|
|
let enum_data = self.save_ctxt.get_item_data(item);
|
|
let enum_data = match enum_data {
|
|
None => return,
|
|
Some(data) => data,
|
|
};
|
|
down_cast_data!(enum_data, EnumData, item.span);
|
|
if !self.span.filter_generated(Some(enum_data.span), item.span) {
|
|
self.dumper.enum_data(enum_data.clone().lower(self.tcx));
|
|
}
|
|
|
|
for variant in &enum_definition.variants {
|
|
let name = variant.node.name.name.to_string();
|
|
let mut qualname = enum_data.qualname.clone();
|
|
qualname.push_str("::");
|
|
qualname.push_str(&name);
|
|
|
|
let text = self.span.signature_string_for_span(variant.span);
|
|
let ident_start = text.find(&name).unwrap();
|
|
let ident_end = ident_start + name.len();
|
|
let sig = Signature {
|
|
span: variant.span,
|
|
text: text,
|
|
ident_start: ident_start,
|
|
ident_end: ident_end,
|
|
defs: vec![],
|
|
refs: vec![],
|
|
};
|
|
|
|
match variant.node.data {
|
|
ast::VariantData::Struct(ref fields, _) => {
|
|
let sub_span = self.span.span_for_first_ident(variant.span);
|
|
let fields_str = fields.iter()
|
|
.enumerate()
|
|
.map(|(i, f)| f.ident.map(|i| i.to_string())
|
|
.unwrap_or(i.to_string()))
|
|
.collect::<Vec<_>>()
|
|
.join(", ");
|
|
let val = format!("{}::{} {{ {} }}", enum_data.name, name, fields_str);
|
|
if !self.span.filter_generated(sub_span, variant.span) {
|
|
self.dumper.struct_variant(StructVariantData {
|
|
span: sub_span.expect("No span found for struct variant"),
|
|
id: variant.node.data.id(),
|
|
name: name,
|
|
qualname: qualname,
|
|
type_value: enum_data.qualname.clone(),
|
|
value: val,
|
|
scope: enum_data.scope,
|
|
parent: Some(make_def_id(item.id, &self.tcx.map)),
|
|
docs: docs_for_attrs(&variant.node.attrs),
|
|
sig: sig,
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
ref v => {
|
|
let sub_span = self.span.span_for_first_ident(variant.span);
|
|
let mut val = format!("{}::{}", enum_data.name, name);
|
|
if let &ast::VariantData::Tuple(ref fields, _) = v {
|
|
val.push('(');
|
|
val.push_str(&fields.iter()
|
|
.map(|f| ty_to_string(&f.ty))
|
|
.collect::<Vec<_>>()
|
|
.join(", "));
|
|
val.push(')');
|
|
}
|
|
if !self.span.filter_generated(sub_span, variant.span) {
|
|
self.dumper.tuple_variant(TupleVariantData {
|
|
span: sub_span.expect("No span found for tuple variant"),
|
|
id: variant.node.data.id(),
|
|
name: name,
|
|
qualname: qualname,
|
|
type_value: enum_data.qualname.clone(),
|
|
value: val,
|
|
scope: enum_data.scope,
|
|
parent: Some(make_def_id(item.id, &self.tcx.map)),
|
|
docs: docs_for_attrs(&variant.node.attrs),
|
|
sig: sig,
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
for field in variant.node.data.fields() {
|
|
self.process_struct_field_def(field, variant.node.data.id());
|
|
self.visit_ty(&field.ty);
|
|
}
|
|
}
|
|
self.process_generic_params(ty_params, item.span, &enum_data.qualname, enum_data.id);
|
|
}
|
|
|
|
fn process_impl(&mut self,
|
|
item: &'l ast::Item,
|
|
type_parameters: &'l ast::Generics,
|
|
trait_ref: &'l Option<ast::TraitRef>,
|
|
typ: &'l ast::Ty,
|
|
impl_items: &'l [ast::ImplItem]) {
|
|
let mut has_self_ref = false;
|
|
if let Some(impl_data) = self.save_ctxt.get_item_data(item) {
|
|
down_cast_data!(impl_data, ImplData, item.span);
|
|
if let Some(ref self_ref) = impl_data.self_ref {
|
|
has_self_ref = true;
|
|
if !self.span.filter_generated(Some(self_ref.span), item.span) {
|
|
self.dumper.type_ref(self_ref.clone().lower(self.tcx));
|
|
}
|
|
}
|
|
if let Some(ref trait_ref_data) = impl_data.trait_ref {
|
|
if !self.span.filter_generated(Some(trait_ref_data.span), item.span) {
|
|
self.dumper.type_ref(trait_ref_data.clone().lower(self.tcx));
|
|
}
|
|
}
|
|
|
|
if !self.span.filter_generated(Some(impl_data.span), item.span) {
|
|
self.dumper.impl_data(ImplData {
|
|
id: impl_data.id,
|
|
span: impl_data.span,
|
|
scope: impl_data.scope,
|
|
trait_ref: impl_data.trait_ref.map(|d| d.ref_id.unwrap()),
|
|
self_ref: impl_data.self_ref.map(|d| d.ref_id.unwrap())
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
if !has_self_ref {
|
|
self.visit_ty(&typ);
|
|
}
|
|
if let &Some(ref trait_ref) = trait_ref {
|
|
self.process_path(trait_ref.ref_id, &trait_ref.path, Some(recorder::TypeRef));
|
|
}
|
|
self.process_generic_params(type_parameters, item.span, "", item.id);
|
|
for impl_item in impl_items {
|
|
let map = &self.tcx.map;
|
|
self.process_impl_item(impl_item, make_def_id(item.id, map));
|
|
}
|
|
}
|
|
|
|
fn process_trait(&mut self,
|
|
item: &'l ast::Item,
|
|
generics: &'l ast::Generics,
|
|
trait_refs: &'l ast::TyParamBounds,
|
|
methods: &'l [ast::TraitItem]) {
|
|
let name = item.ident.to_string();
|
|
let qualname = format!("::{}", self.tcx.node_path_str(item.id));
|
|
let mut val = name.clone();
|
|
if !generics.lifetimes.is_empty() || !generics.ty_params.is_empty() {
|
|
val.push_str(&generics_to_string(generics));
|
|
}
|
|
if !trait_refs.is_empty() {
|
|
val.push_str(": ");
|
|
val.push_str(&bounds_to_string(trait_refs));
|
|
}
|
|
let sub_span = self.span.sub_span_after_keyword(item.span, keywords::Trait);
|
|
if !self.span.filter_generated(sub_span, item.span) {
|
|
self.dumper.trait_data(TraitData {
|
|
span: sub_span.expect("No span found for trait"),
|
|
id: item.id,
|
|
name: name,
|
|
qualname: qualname.clone(),
|
|
scope: self.cur_scope,
|
|
value: val,
|
|
items: methods.iter().map(|i| i.id).collect(),
|
|
visibility: From::from(&item.vis),
|
|
docs: docs_for_attrs(&item.attrs),
|
|
sig: self.save_ctxt.sig_base(item),
|
|
}.lower(self.tcx));
|
|
}
|
|
|
|
// super-traits
|
|
for super_bound in trait_refs.iter() {
|
|
let trait_ref = match *super_bound {
|
|
ast::TraitTyParamBound(ref trait_ref, _) => {
|
|
trait_ref
|
|
}
|
|
ast::RegionTyParamBound(..) => {
|
|
continue;
|
|
}
|
|
};
|
|
|
|
let trait_ref = &trait_ref.trait_ref;
|
|
if let Some(id) = self.lookup_def_id(trait_ref.ref_id) {
|
|
let sub_span = self.span.sub_span_for_type_name(trait_ref.path.span);
|
|
if !self.span.filter_generated(sub_span, trait_ref.path.span) {
|
|
self.dumper.type_ref(TypeRefData {
|
|
span: sub_span.expect("No span found for trait ref"),
|
|
ref_id: Some(id),
|
|
scope: self.cur_scope,
|
|
qualname: String::new()
|
|
}.lower(self.tcx));
|
|
}
|
|
|
|
if !self.span.filter_generated(sub_span, trait_ref.path.span) {
|
|
let sub_span = sub_span.expect("No span for inheritance");
|
|
self.dumper.inheritance(InheritanceData {
|
|
span: sub_span,
|
|
base_id: id,
|
|
deriv_id: item.id
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
}
|
|
|
|
// walk generics and methods
|
|
self.process_generic_params(generics, item.span, &qualname, item.id);
|
|
for method in methods {
|
|
let map = &self.tcx.map;
|
|
self.process_trait_item(method, make_def_id(item.id, map))
|
|
}
|
|
}
|
|
|
|
// `item` is the module in question, represented as an item.
|
|
fn process_mod(&mut self, item: &ast::Item) {
|
|
if let Some(mod_data) = self.save_ctxt.get_item_data(item) {
|
|
down_cast_data!(mod_data, ModData, item.span);
|
|
if !self.span.filter_generated(Some(mod_data.span), item.span) {
|
|
self.dumper.mod_data(mod_data.lower(self.tcx));
|
|
}
|
|
}
|
|
}
|
|
|
|
fn process_path(&mut self, id: NodeId, path: &ast::Path, ref_kind: Option<recorder::Row>) {
|
|
let path_data = self.save_ctxt.get_path_data(id, path);
|
|
if generated_code(path.span) && path_data.is_none() {
|
|
return;
|
|
}
|
|
|
|
let path_data = match path_data {
|
|
Some(pd) => pd,
|
|
None => {
|
|
return;
|
|
}
|
|
};
|
|
|
|
match path_data {
|
|
Data::VariableRefData(vrd) => {
|
|
// FIXME: this whole block duplicates the code in process_def_kind
|
|
if !self.span.filter_generated(Some(vrd.span), path.span) {
|
|
match ref_kind {
|
|
Some(recorder::TypeRef) => {
|
|
self.dumper.type_ref(TypeRefData {
|
|
span: vrd.span,
|
|
ref_id: Some(vrd.ref_id),
|
|
scope: vrd.scope,
|
|
qualname: String::new()
|
|
}.lower(self.tcx));
|
|
}
|
|
Some(recorder::FnRef) => {
|
|
self.dumper.function_ref(FunctionRefData {
|
|
span: vrd.span,
|
|
ref_id: vrd.ref_id,
|
|
scope: vrd.scope
|
|
}.lower(self.tcx));
|
|
}
|
|
Some(recorder::ModRef) => {
|
|
self.dumper.mod_ref( ModRefData {
|
|
span: vrd.span,
|
|
ref_id: Some(vrd.ref_id),
|
|
scope: vrd.scope,
|
|
qualname: String::new()
|
|
}.lower(self.tcx));
|
|
}
|
|
Some(recorder::VarRef) | None
|
|
=> self.dumper.variable_ref(vrd.lower(self.tcx))
|
|
}
|
|
}
|
|
|
|
}
|
|
Data::TypeRefData(trd) => {
|
|
if !self.span.filter_generated(Some(trd.span), path.span) {
|
|
self.dumper.type_ref(trd.lower(self.tcx));
|
|
}
|
|
}
|
|
Data::MethodCallData(mcd) => {
|
|
if !self.span.filter_generated(Some(mcd.span), path.span) {
|
|
self.dumper.method_call(mcd.lower(self.tcx));
|
|
}
|
|
}
|
|
Data::FunctionCallData(fcd) => {
|
|
if !self.span.filter_generated(Some(fcd.span), path.span) {
|
|
self.dumper.function_call(fcd.lower(self.tcx));
|
|
}
|
|
}
|
|
_ => {
|
|
span_bug!(path.span, "Unexpected data: {:?}", path_data);
|
|
}
|
|
}
|
|
|
|
// Modules or types in the path prefix.
|
|
match self.save_ctxt.get_path_def(id) {
|
|
Def::Method(did) => {
|
|
let ti = self.tcx.associated_item(did);
|
|
if ti.kind == ty::AssociatedKind::Method && ti.method_has_self_argument {
|
|
self.write_sub_path_trait_truncated(path);
|
|
}
|
|
}
|
|
Def::Fn(..) |
|
|
Def::Const(..) |
|
|
Def::Static(..) |
|
|
Def::StructCtor(..) |
|
|
Def::VariantCtor(..) |
|
|
Def::AssociatedConst(..) |
|
|
Def::Local(..) |
|
|
Def::Upvar(..) |
|
|
Def::Struct(..) |
|
|
Def::Union(..) |
|
|
Def::Variant(..) |
|
|
Def::TyAlias(..) |
|
|
Def::AssociatedTy(..) => self.write_sub_paths_truncated(path),
|
|
_ => {}
|
|
}
|
|
}
|
|
|
|
fn process_struct_lit(&mut self,
|
|
ex: &'l ast::Expr,
|
|
path: &'l ast::Path,
|
|
fields: &'l [ast::Field],
|
|
variant: &'l ty::VariantDef,
|
|
base: &'l Option<P<ast::Expr>>) {
|
|
self.write_sub_paths_truncated(path);
|
|
|
|
if let Some(struct_lit_data) = self.save_ctxt.get_expr_data(ex) {
|
|
down_cast_data!(struct_lit_data, TypeRefData, ex.span);
|
|
if !self.span.filter_generated(Some(struct_lit_data.span), ex.span) {
|
|
self.dumper.type_ref(struct_lit_data.lower(self.tcx));
|
|
}
|
|
|
|
let scope = self.save_ctxt.enclosing_scope(ex.id);
|
|
|
|
for field in fields {
|
|
if let Some(field_data) = self.save_ctxt
|
|
.get_field_ref_data(field, variant, scope) {
|
|
|
|
if !self.span.filter_generated(Some(field_data.span), field.ident.span) {
|
|
self.dumper.variable_ref(field_data.lower(self.tcx));
|
|
}
|
|
}
|
|
|
|
self.visit_expr(&field.expr)
|
|
}
|
|
}
|
|
|
|
walk_list!(self, visit_expr, base);
|
|
}
|
|
|
|
fn process_method_call(&mut self, ex: &'l ast::Expr, args: &'l [P<ast::Expr>]) {
|
|
if let Some(mcd) = self.save_ctxt.get_expr_data(ex) {
|
|
down_cast_data!(mcd, MethodCallData, ex.span);
|
|
if !self.span.filter_generated(Some(mcd.span), ex.span) {
|
|
self.dumper.method_call(mcd.lower(self.tcx));
|
|
}
|
|
}
|
|
|
|
// walk receiver and args
|
|
walk_list!(self, visit_expr, args);
|
|
}
|
|
|
|
fn process_pat(&mut self, p: &'l ast::Pat) {
|
|
match p.node {
|
|
PatKind::Struct(ref _path, ref fields, _) => {
|
|
// FIXME do something with _path?
|
|
let adt = match self.save_ctxt.tables.node_id_to_type_opt(p.id) {
|
|
Some(ty) => ty.ty_adt_def().unwrap(),
|
|
None => {
|
|
visit::walk_pat(self, p);
|
|
return;
|
|
}
|
|
};
|
|
let variant = adt.variant_of_def(self.save_ctxt.get_path_def(p.id));
|
|
|
|
for &Spanned { node: ref field, span } in fields {
|
|
let sub_span = self.span.span_for_first_ident(span);
|
|
if let Some(f) = variant.find_field_named(field.ident.name) {
|
|
if !self.span.filter_generated(sub_span, span) {
|
|
self.dumper.variable_ref(VariableRefData {
|
|
span: sub_span.expect("No span fund for var ref"),
|
|
ref_id: f.did,
|
|
scope: self.cur_scope,
|
|
name: String::new()
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
self.visit_pat(&field.pat);
|
|
}
|
|
}
|
|
_ => visit::walk_pat(self, p),
|
|
}
|
|
}
|
|
|
|
|
|
fn process_var_decl(&mut self, p: &'l ast::Pat, value: String) {
|
|
// The local could declare multiple new vars, we must walk the
|
|
// pattern and collect them all.
|
|
let mut collector = PathCollector::new();
|
|
collector.visit_pat(&p);
|
|
self.visit_pat(&p);
|
|
|
|
for &(id, ref p, immut, _) in &collector.collected_paths {
|
|
let mut value = match immut {
|
|
ast::Mutability::Immutable => value.to_string(),
|
|
_ => String::new(),
|
|
};
|
|
let typ = match self.save_ctxt.tables.node_types.get(&id) {
|
|
Some(typ) => {
|
|
let typ = typ.to_string();
|
|
if !value.is_empty() {
|
|
value.push_str(": ");
|
|
}
|
|
value.push_str(&typ);
|
|
typ
|
|
}
|
|
None => String::new(),
|
|
};
|
|
|
|
// Get the span only for the name of the variable (I hope the path
|
|
// is only ever a variable name, but who knows?).
|
|
let sub_span = self.span.span_for_last_ident(p.span);
|
|
// Rust uses the id of the pattern for var lookups, so we'll use it too.
|
|
if !self.span.filter_generated(sub_span, p.span) {
|
|
self.dumper.variable(VariableData {
|
|
span: sub_span.expect("No span found for variable"),
|
|
kind: VariableKind::Local,
|
|
id: id,
|
|
name: path_to_string(p),
|
|
qualname: format!("{}${}", path_to_string(p), id),
|
|
value: value,
|
|
type_value: typ,
|
|
scope: CRATE_NODE_ID,
|
|
parent: None,
|
|
visibility: Visibility::Inherited,
|
|
docs: String::new(),
|
|
sig: None,
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Extract macro use and definition information from the AST node defined
|
|
/// by the given NodeId, using the expansion information from the node's
|
|
/// span.
|
|
///
|
|
/// If the span is not macro-generated, do nothing, else use callee and
|
|
/// callsite spans to record macro definition and use data, using the
|
|
/// mac_uses and mac_defs sets to prevent multiples.
|
|
fn process_macro_use(&mut self, span: Span, id: NodeId) {
|
|
let data = match self.save_ctxt.get_macro_use_data(span, id) {
|
|
None => return,
|
|
Some(data) => data,
|
|
};
|
|
let mut hasher = DefaultHasher::new();
|
|
data.callee_span.hash(&mut hasher);
|
|
let hash = hasher.finish();
|
|
let qualname = format!("{}::{}", data.name, hash);
|
|
// Don't write macro definition for imported macros
|
|
if !self.mac_defs.contains(&data.callee_span)
|
|
&& !data.imported {
|
|
self.mac_defs.insert(data.callee_span);
|
|
if let Some(sub_span) = self.span.span_for_macro_def_name(data.callee_span) {
|
|
self.dumper.macro_data(MacroData {
|
|
span: sub_span,
|
|
name: data.name.clone(),
|
|
qualname: qualname.clone(),
|
|
// FIXME where do macro docs come from?
|
|
docs: String::new(),
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
if !self.mac_uses.contains(&data.span) {
|
|
self.mac_uses.insert(data.span);
|
|
if let Some(sub_span) = self.span.span_for_macro_use_name(data.span) {
|
|
self.dumper.macro_use(MacroUseData {
|
|
span: sub_span,
|
|
name: data.name,
|
|
qualname: qualname,
|
|
scope: data.scope,
|
|
callee_span: data.callee_span,
|
|
imported: data.imported,
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
}
|
|
|
|
fn process_trait_item(&mut self, trait_item: &'l ast::TraitItem, trait_id: DefId) {
|
|
self.process_macro_use(trait_item.span, trait_item.id);
|
|
match trait_item.node {
|
|
ast::TraitItemKind::Const(ref ty, Some(ref expr)) => {
|
|
self.process_assoc_const(trait_item.id,
|
|
trait_item.ident.name,
|
|
trait_item.span,
|
|
&ty,
|
|
&expr,
|
|
trait_id,
|
|
Visibility::Public,
|
|
&trait_item.attrs);
|
|
}
|
|
ast::TraitItemKind::Method(ref sig, ref body) => {
|
|
self.process_method(sig,
|
|
body.as_ref().map(|x| &**x),
|
|
trait_item.id,
|
|
trait_item.ident.name,
|
|
Visibility::Public,
|
|
&trait_item.attrs,
|
|
trait_item.span);
|
|
}
|
|
ast::TraitItemKind::Const(_, None) |
|
|
ast::TraitItemKind::Type(..) |
|
|
ast::TraitItemKind::Macro(_) => {}
|
|
}
|
|
}
|
|
|
|
fn process_impl_item(&mut self, impl_item: &'l ast::ImplItem, impl_id: DefId) {
|
|
self.process_macro_use(impl_item.span, impl_item.id);
|
|
match impl_item.node {
|
|
ast::ImplItemKind::Const(ref ty, ref expr) => {
|
|
self.process_assoc_const(impl_item.id,
|
|
impl_item.ident.name,
|
|
impl_item.span,
|
|
&ty,
|
|
&expr,
|
|
impl_id,
|
|
From::from(&impl_item.vis),
|
|
&impl_item.attrs);
|
|
}
|
|
ast::ImplItemKind::Method(ref sig, ref body) => {
|
|
self.process_method(sig,
|
|
Some(body),
|
|
impl_item.id,
|
|
impl_item.ident.name,
|
|
From::from(&impl_item.vis),
|
|
&impl_item.attrs,
|
|
impl_item.span);
|
|
}
|
|
ast::ImplItemKind::Type(_) |
|
|
ast::ImplItemKind::Macro(_) => {}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'l, 'tcx: 'l, 'll, D: Dump +'ll> Visitor<'l> for DumpVisitor<'l, 'tcx, 'll, D> {
|
|
fn visit_item(&mut self, item: &'l ast::Item) {
|
|
use syntax::ast::ItemKind::*;
|
|
self.process_macro_use(item.span, item.id);
|
|
match item.node {
|
|
Use(ref use_item) => {
|
|
match use_item.node {
|
|
ast::ViewPathSimple(ident, ref path) => {
|
|
let sub_span = self.span.span_for_last_ident(path.span);
|
|
let mod_id = match self.lookup_def_id(item.id) {
|
|
Some(def_id) => {
|
|
let scope = self.cur_scope;
|
|
self.process_def_kind(item.id, path.span, sub_span, def_id, scope);
|
|
|
|
Some(def_id)
|
|
}
|
|
None => None,
|
|
};
|
|
|
|
// 'use' always introduces an alias, if there is not an explicit
|
|
// one, there is an implicit one.
|
|
let sub_span = match self.span.sub_span_after_keyword(use_item.span,
|
|
keywords::As) {
|
|
Some(sub_span) => Some(sub_span),
|
|
None => sub_span,
|
|
};
|
|
|
|
if !self.span.filter_generated(sub_span, path.span) {
|
|
self.dumper.use_data(UseData {
|
|
span: sub_span.expect("No span found for use"),
|
|
id: item.id,
|
|
mod_id: mod_id,
|
|
name: ident.to_string(),
|
|
scope: self.cur_scope,
|
|
visibility: From::from(&item.vis),
|
|
}.lower(self.tcx));
|
|
}
|
|
self.write_sub_paths_truncated(path);
|
|
}
|
|
ast::ViewPathGlob(ref path) => {
|
|
// Make a comma-separated list of names of imported modules.
|
|
let mut names = vec![];
|
|
let glob_map = &self.save_ctxt.analysis.glob_map;
|
|
let glob_map = glob_map.as_ref().unwrap();
|
|
if glob_map.contains_key(&item.id) {
|
|
for n in glob_map.get(&item.id).unwrap() {
|
|
names.push(n.to_string());
|
|
}
|
|
}
|
|
|
|
let sub_span = self.span
|
|
.sub_span_of_token(item.span, token::BinOp(token::Star));
|
|
if !self.span.filter_generated(sub_span, item.span) {
|
|
self.dumper.use_glob(UseGlobData {
|
|
span: sub_span.expect("No span found for use glob"),
|
|
id: item.id,
|
|
names: names,
|
|
scope: self.cur_scope,
|
|
visibility: From::from(&item.vis),
|
|
}.lower(self.tcx));
|
|
}
|
|
self.write_sub_paths(path);
|
|
}
|
|
ast::ViewPathList(ref path, ref list) => {
|
|
for plid in list {
|
|
let scope = self.cur_scope;
|
|
let id = plid.node.id;
|
|
if let Some(def_id) = self.lookup_def_id(id) {
|
|
let span = plid.span;
|
|
self.process_def_kind(id, span, Some(span), def_id, scope);
|
|
}
|
|
}
|
|
|
|
self.write_sub_paths(path);
|
|
}
|
|
}
|
|
}
|
|
ExternCrate(ref s) => {
|
|
let location = match *s {
|
|
Some(s) => s.to_string(),
|
|
None => item.ident.to_string(),
|
|
};
|
|
let alias_span = self.span.span_for_last_ident(item.span);
|
|
let cnum = match self.sess.cstore.extern_mod_stmt_cnum(item.id) {
|
|
Some(cnum) => cnum,
|
|
None => LOCAL_CRATE,
|
|
};
|
|
|
|
if !self.span.filter_generated(alias_span, item.span) {
|
|
self.dumper.extern_crate(ExternCrateData {
|
|
id: item.id,
|
|
name: item.ident.to_string(),
|
|
crate_num: cnum,
|
|
location: location,
|
|
span: alias_span.expect("No span found for extern crate"),
|
|
scope: self.cur_scope,
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
Fn(ref decl, .., ref ty_params, ref body) =>
|
|
self.process_fn(item, &decl, ty_params, &body),
|
|
Static(ref typ, _, ref expr) =>
|
|
self.process_static_or_const_item(item, typ, expr),
|
|
Const(ref typ, ref expr) =>
|
|
self.process_static_or_const_item(item, &typ, &expr),
|
|
Struct(ref def, ref ty_params) => self.process_struct(item, def, ty_params),
|
|
Enum(ref def, ref ty_params) => self.process_enum(item, def, ty_params),
|
|
Impl(..,
|
|
ref ty_params,
|
|
ref trait_ref,
|
|
ref typ,
|
|
ref impl_items) => {
|
|
self.process_impl(item, ty_params, trait_ref, &typ, impl_items)
|
|
}
|
|
Trait(_, ref generics, ref trait_refs, ref methods) =>
|
|
self.process_trait(item, generics, trait_refs, methods),
|
|
Mod(ref m) => {
|
|
self.process_mod(item);
|
|
self.nest_scope(item.id, |v| visit::walk_mod(v, m));
|
|
}
|
|
Ty(ref ty, ref ty_params) => {
|
|
let qualname = format!("::{}", self.tcx.node_path_str(item.id));
|
|
let value = ty_to_string(&ty);
|
|
let sub_span = self.span.sub_span_after_keyword(item.span, keywords::Type);
|
|
if !self.span.filter_generated(sub_span, item.span) {
|
|
self.dumper.typedef(TypeDefData {
|
|
span: sub_span.expect("No span found for typedef"),
|
|
name: item.ident.to_string(),
|
|
id: item.id,
|
|
qualname: qualname.clone(),
|
|
value: value,
|
|
visibility: From::from(&item.vis),
|
|
parent: None,
|
|
docs: docs_for_attrs(&item.attrs),
|
|
sig: Some(self.save_ctxt.sig_base(item)),
|
|
}.lower(self.tcx));
|
|
}
|
|
|
|
self.visit_ty(&ty);
|
|
self.process_generic_params(ty_params, item.span, &qualname, item.id);
|
|
}
|
|
Mac(_) => (),
|
|
_ => visit::walk_item(self, item),
|
|
}
|
|
}
|
|
|
|
fn visit_generics(&mut self, generics: &'l ast::Generics) {
|
|
for param in generics.ty_params.iter() {
|
|
for bound in param.bounds.iter() {
|
|
if let ast::TraitTyParamBound(ref trait_ref, _) = *bound {
|
|
self.process_trait_ref(&trait_ref.trait_ref);
|
|
}
|
|
}
|
|
if let Some(ref ty) = param.default {
|
|
self.visit_ty(&ty);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn visit_ty(&mut self, t: &'l ast::Ty) {
|
|
self.process_macro_use(t.span, t.id);
|
|
match t.node {
|
|
ast::TyKind::Path(_, ref path) => {
|
|
if generated_code(t.span) {
|
|
return;
|
|
}
|
|
|
|
if let Some(id) = self.lookup_def_id(t.id) {
|
|
if let Some(sub_span) = self.span.sub_span_for_type_name(t.span) {
|
|
self.dumper.type_ref(TypeRefData {
|
|
span: sub_span,
|
|
ref_id: Some(id),
|
|
scope: self.cur_scope,
|
|
qualname: String::new()
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
|
|
self.write_sub_paths_truncated(path);
|
|
visit::walk_path(self, path);
|
|
}
|
|
ast::TyKind::Array(ref element, ref length) => {
|
|
self.visit_ty(element);
|
|
self.nest_tables(length.id, |v| v.visit_expr(length));
|
|
}
|
|
_ => visit::walk_ty(self, t),
|
|
}
|
|
}
|
|
|
|
fn visit_expr(&mut self, ex: &'l ast::Expr) {
|
|
debug!("visit_expr {:?}", ex.node);
|
|
self.process_macro_use(ex.span, ex.id);
|
|
match ex.node {
|
|
ast::ExprKind::Call(ref _f, ref _args) => {
|
|
// Don't need to do anything for function calls,
|
|
// because just walking the callee path does what we want.
|
|
visit::walk_expr(self, ex);
|
|
}
|
|
ast::ExprKind::Path(_, ref path) => {
|
|
self.process_path(ex.id, path, None);
|
|
visit::walk_expr(self, ex);
|
|
}
|
|
ast::ExprKind::Struct(ref path, ref fields, ref base) => {
|
|
let hir_expr = self.save_ctxt.tcx.map.expect_expr(ex.id);
|
|
let adt = match self.save_ctxt.tables.expr_ty_opt(&hir_expr) {
|
|
Some(ty) => ty.ty_adt_def().unwrap(),
|
|
None => {
|
|
visit::walk_expr(self, ex);
|
|
return;
|
|
}
|
|
};
|
|
let def = self.save_ctxt.get_path_def(hir_expr.id);
|
|
self.process_struct_lit(ex, path, fields, adt.variant_of_def(def), base)
|
|
}
|
|
ast::ExprKind::MethodCall(.., ref args) => self.process_method_call(ex, args),
|
|
ast::ExprKind::Field(ref sub_ex, _) => {
|
|
self.visit_expr(&sub_ex);
|
|
|
|
if let Some(field_data) = self.save_ctxt.get_expr_data(ex) {
|
|
down_cast_data!(field_data, VariableRefData, ex.span);
|
|
if !self.span.filter_generated(Some(field_data.span), ex.span) {
|
|
self.dumper.variable_ref(field_data.lower(self.tcx));
|
|
}
|
|
}
|
|
}
|
|
ast::ExprKind::TupField(ref sub_ex, idx) => {
|
|
self.visit_expr(&sub_ex);
|
|
|
|
let hir_node = match self.save_ctxt.tcx.map.find(sub_ex.id) {
|
|
Some(Node::NodeExpr(expr)) => expr,
|
|
_ => {
|
|
debug!("Missing or weird node for sub-expression {} in {:?}",
|
|
sub_ex.id, ex);
|
|
return;
|
|
}
|
|
};
|
|
let ty = match self.save_ctxt.tables.expr_ty_adjusted_opt(&hir_node) {
|
|
Some(ty) => &ty.sty,
|
|
None => {
|
|
visit::walk_expr(self, ex);
|
|
return;
|
|
}
|
|
};
|
|
match *ty {
|
|
ty::TyAdt(def, _) => {
|
|
let sub_span = self.span.sub_span_after_token(ex.span, token::Dot);
|
|
if !self.span.filter_generated(sub_span, ex.span) {
|
|
self.dumper.variable_ref(VariableRefData {
|
|
span: sub_span.expect("No span found for var ref"),
|
|
ref_id: def.struct_variant().fields[idx.node].did,
|
|
scope: self.cur_scope,
|
|
name: String::new()
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
ty::TyTuple(_) => {}
|
|
_ => span_bug!(ex.span,
|
|
"Expected struct or tuple type, found {:?}",
|
|
ty),
|
|
}
|
|
}
|
|
ast::ExprKind::Closure(_, ref decl, ref body, _fn_decl_span) => {
|
|
let mut id = String::from("$");
|
|
id.push_str(&ex.id.to_string());
|
|
|
|
// walk arg and return types
|
|
for arg in &decl.inputs {
|
|
self.visit_ty(&arg.ty);
|
|
}
|
|
|
|
if let ast::FunctionRetTy::Ty(ref ret_ty) = decl.output {
|
|
self.visit_ty(&ret_ty);
|
|
}
|
|
|
|
// walk the body
|
|
self.nest_tables(ex.id, |v| {
|
|
v.process_formals(&decl.inputs, &id);
|
|
v.nest_scope(ex.id, |v| v.visit_expr(body))
|
|
});
|
|
}
|
|
ast::ExprKind::ForLoop(ref pattern, ref subexpression, ref block, _) |
|
|
ast::ExprKind::WhileLet(ref pattern, ref subexpression, ref block, _) => {
|
|
let value = self.span.snippet(subexpression.span);
|
|
self.process_var_decl(pattern, value);
|
|
debug!("for loop, walk sub-expr: {:?}", subexpression.node);
|
|
visit::walk_expr(self, subexpression);
|
|
visit::walk_block(self, block);
|
|
}
|
|
ast::ExprKind::IfLet(ref pattern, ref subexpression, ref block, ref opt_else) => {
|
|
let value = self.span.snippet(subexpression.span);
|
|
self.process_var_decl(pattern, value);
|
|
visit::walk_expr(self, subexpression);
|
|
visit::walk_block(self, block);
|
|
opt_else.as_ref().map(|el| visit::walk_expr(self, el));
|
|
}
|
|
ast::ExprKind::Repeat(ref element, ref count) => {
|
|
self.visit_expr(element);
|
|
self.nest_tables(count.id, |v| v.visit_expr(count));
|
|
}
|
|
_ => {
|
|
visit::walk_expr(self, ex)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn visit_mac(&mut self, mac: &'l ast::Mac) {
|
|
// These shouldn't exist in the AST at this point, log a span bug.
|
|
span_bug!(mac.span, "macro invocation should have been expanded out of AST");
|
|
}
|
|
|
|
fn visit_pat(&mut self, p: &'l ast::Pat) {
|
|
self.process_macro_use(p.span, p.id);
|
|
self.process_pat(p);
|
|
}
|
|
|
|
fn visit_arm(&mut self, arm: &'l ast::Arm) {
|
|
let mut collector = PathCollector::new();
|
|
for pattern in &arm.pats {
|
|
// collect paths from the arm's patterns
|
|
collector.visit_pat(&pattern);
|
|
self.visit_pat(&pattern);
|
|
}
|
|
|
|
// This is to get around borrow checking, because we need mut self to call process_path.
|
|
let mut paths_to_process = vec![];
|
|
|
|
// process collected paths
|
|
for &(id, ref p, immut, ref_kind) in &collector.collected_paths {
|
|
match self.save_ctxt.get_path_def(id) {
|
|
Def::Local(def_id) => {
|
|
let id = self.tcx.map.as_local_node_id(def_id).unwrap();
|
|
let mut value = if immut == ast::Mutability::Immutable {
|
|
self.span.snippet(p.span).to_string()
|
|
} else {
|
|
"<mutable>".to_string()
|
|
};
|
|
let typ = self.save_ctxt.tables.node_types
|
|
.get(&id).map(|t| t.to_string()).unwrap_or(String::new());
|
|
value.push_str(": ");
|
|
value.push_str(&typ);
|
|
|
|
assert!(p.segments.len() == 1,
|
|
"qualified path for local variable def in arm");
|
|
if !self.span.filter_generated(Some(p.span), p.span) {
|
|
self.dumper.variable(VariableData {
|
|
span: p.span,
|
|
kind: VariableKind::Local,
|
|
id: id,
|
|
name: path_to_string(p),
|
|
qualname: format!("{}${}", path_to_string(p), id),
|
|
value: value,
|
|
type_value: typ,
|
|
scope: CRATE_NODE_ID,
|
|
parent: None,
|
|
visibility: Visibility::Inherited,
|
|
docs: String::new(),
|
|
sig: None,
|
|
}.lower(self.tcx));
|
|
}
|
|
}
|
|
Def::StructCtor(..) | Def::VariantCtor(..) |
|
|
Def::Const(..) | Def::AssociatedConst(..) |
|
|
Def::Struct(..) | Def::Variant(..) |
|
|
Def::TyAlias(..) | Def::AssociatedTy(..) |
|
|
Def::SelfTy(..) => {
|
|
paths_to_process.push((id, p.clone(), Some(ref_kind)))
|
|
}
|
|
def => error!("unexpected definition kind when processing collected paths: {:?}",
|
|
def),
|
|
}
|
|
}
|
|
|
|
for &(id, ref path, ref_kind) in &paths_to_process {
|
|
self.process_path(id, path, ref_kind);
|
|
}
|
|
walk_list!(self, visit_expr, &arm.guard);
|
|
self.visit_expr(&arm.body);
|
|
}
|
|
|
|
fn visit_path(&mut self, p: &'l ast::Path, id: NodeId) {
|
|
self.process_path(id, p, None);
|
|
}
|
|
|
|
fn visit_stmt(&mut self, s: &'l ast::Stmt) {
|
|
self.process_macro_use(s.span, s.id);
|
|
visit::walk_stmt(self, s)
|
|
}
|
|
|
|
fn visit_local(&mut self, l: &'l ast::Local) {
|
|
self.process_macro_use(l.span, l.id);
|
|
let value = l.init.as_ref().map(|i| self.span.snippet(i.span)).unwrap_or(String::new());
|
|
self.process_var_decl(&l.pat, value);
|
|
|
|
// Just walk the initialiser and type (don't want to walk the pattern again).
|
|
walk_list!(self, visit_ty, &l.ty);
|
|
walk_list!(self, visit_expr, &l.init);
|
|
}
|
|
}
|