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List crate attributes when running rustc with '--ls'

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This commit is contained in:
Brian Anderson 2011-06-27 18:32:15 -07:00
parent 9561def209
commit d328c7e03e
3 changed files with 64 additions and 22 deletions
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22
src/comp/metadata/creader.rs
View File

@ -24,25 +24,6 @@
export read_crates;
export list_file_metadata;
fn get_exported_metadata(&session::session sess, &str path, &vec[u8] data) ->
hashmap[str, str] {
auto meta_items =
ebml::get_doc(ebml::new_doc(data), tag_meta_export);
auto mm = common::new_str_hash[str]();
for each (ebml::doc m in
ebml::tagged_docs(meta_items, tag_meta_item)) {
auto kd = ebml::get_doc(m, tag_meta_item_key);
auto vd = ebml::get_doc(m, tag_meta_item_value);
auto k = str::unsafe_from_bytes(ebml::doc_data(kd));
auto v = str::unsafe_from_bytes(ebml::doc_data(vd));
log #fmt("metadata in %s: %s = %s", path, k, v);
if (!mm.insert(k, v)) {
sess.warn(#fmt("Duplicate metadata item in %s: %s", path, k));
}
}
ret mm;
}
fn metadata_matches(hashmap[str, str] mm, &vec[@ast::meta_item] metas) ->
bool {
log #fmt("matching %u metadata requirements against %u metadata items",
@ -126,7 +107,8 @@ fn find_library_crate(&session::session sess, &ast::ident ident,
}
alt (get_metadata_section(path)) {
case (option::some(?cvec)) {
auto mm = get_exported_metadata(sess, path, cvec);
auto mm = decoder::get_exported_metadata(sess,
path, cvec);
if (!metadata_matches(mm, metas)) {
log #fmt("skipping %s, metadata doesn't match", path);
cont;

60
src/comp/metadata/decoder.rs
View File

@ -5,12 +5,15 @@
import std::vec;
import std::str;
import std::io;
import std::map::hashmap;
import front::ast;
import middle::ty;
import tags::*;
import tydecode::parse_def_id;
import tydecode::parse_ty_data;
import driver::session;
import util::common;
import pretty::pprust;
export get_symbol;
export get_tag_variants;
@ -18,6 +21,7 @@
export lookup_defs;
export get_type;
export list_crate_metadata;
export get_exported_metadata;
fn lookup_hash(&ebml::doc d, fn(vec[u8]) -> bool eq_fn, uint hash) ->
vec[ebml::doc] {
@ -252,8 +256,35 @@ fn item_kind_to_str(u8 kind) -> str {
}
}
fn list_crate_metadata(vec[u8] bytes, io::writer out) {
auto md = ebml::new_doc(bytes);
fn get_meta_items(&ebml::doc md) -> vec[ast::meta_item] {
let vec[ast::meta_item] items = [];
for each (ebml::doc meta_item_doc in
ebml::tagged_docs(md, tag_meta_item)) {
auto kd = ebml::get_doc(meta_item_doc, tag_meta_item_key);
auto vd = ebml::get_doc(meta_item_doc, tag_meta_item_value);
auto k = str::unsafe_from_bytes(ebml::doc_data(kd));
auto v = str::unsafe_from_bytes(ebml::doc_data(vd));
items += [rec(node=ast::meta_key_value(k, v),
span=rec(lo=0u, hi=0u))];
}
ret items;
}
fn list_meta_items(&ebml::doc meta_items, io::writer out) {
for (ast::meta_item mi in get_meta_items(meta_items)) {
out.write_str(#fmt("%s\n", pprust::meta_item_to_str(mi)));
}
}
fn list_crate_attributes(&ebml::doc md, io::writer out) {
out.write_str("=Crate=\n");
auto meta_items = ebml::get_doc(md, tag_meta_export);
list_meta_items(meta_items, out);
out.write_str("\n");
}
fn list_crate_items(vec[u8] bytes, &ebml::doc md, io::writer out) {
out.write_str("=Items=\n");
auto paths = ebml::get_doc(md, tag_paths);
auto items = ebml::get_doc(md, tag_items);
auto index = ebml::get_doc(paths, tag_index);
@ -270,8 +301,33 @@ fn list_crate_metadata(vec[u8] bytes, io::writer out) {
describe_def(items, did)));
}
}
out.write_str("\n");
}
fn list_crate_metadata(vec[u8] bytes, io::writer out) {
auto md = ebml::new_doc(bytes);
list_crate_attributes(md, out);
list_crate_items(bytes, md, out);
}
fn get_exported_metadata(&session::session sess, &str path, &vec[u8] data) ->
hashmap[str, str] {
auto meta_items =
ebml::get_doc(ebml::new_doc(data), tag_meta_export);
auto mm = common::new_str_hash[str]();
for each (ebml::doc m in
ebml::tagged_docs(meta_items, tag_meta_item)) {
auto kd = ebml::get_doc(m, tag_meta_item_key);
auto vd = ebml::get_doc(m, tag_meta_item_value);
auto k = str::unsafe_from_bytes(ebml::doc_data(kd));
auto v = str::unsafe_from_bytes(ebml::doc_data(vd));
log #fmt("metadata in %s: %s = %s", path, k, v);
if (!mm.insert(k, v)) {
sess.warn(#fmt("Duplicate metadata item in %s: %s", path, k));
}
}
ret mm;
}
// Local Variables:
// mode: rust

4
src/comp/pretty/pprust.rs
View File

@ -80,6 +80,10 @@ fn block_to_str(&ast::block blk) -> str {
ret writer.get_str();
}
fn meta_item_to_str(&ast::meta_item mi) -> str {
ret to_str(@mi, print_meta_item);
}
fn cbox(&ps s, uint u) {
vec::push(s.boxes, pp::consistent);
pp::cbox(s.s, u);