Parse, add to AST, and otherwise ignore 'export' view items. Need to add support to resolve.
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d33110ebfc
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9e4943c922
2 changed files with 34 additions and 11 deletions
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@ -279,6 +279,7 @@ type view_item = spanned[view_item_];
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tag view_item_ {
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view_item_use(ident, vec[@meta_item], def_id);
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view_item_import(ident, vec[ident], def_id, option.t[def]);
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view_item_export(ident);
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}
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type item = spanned[item_];
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@ -306,6 +307,11 @@ fn index_view_item(mod_index index, @view_item it) {
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case(ast.view_item_import(?def_ident,_,_,_)) {
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index.insert(def_ident, ast.mie_view_item(it));
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}
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case(ast.view_item_export(_)) {
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// NB: don't index these, they might collide with
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// the import or use that they're exporting. Have
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// to do linear search for exports.
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}
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}
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}
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@ -2187,7 +2187,16 @@ impure fn parse_import(parser p) -> @ast.view_item {
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fail;
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}
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impure fn parse_use_or_import(parser p) -> @ast.view_item {
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impure fn parse_export(parser p) -> @ast.view_item {
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auto lo = p.get_span();
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expect(p, token.EXPORT);
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auto id = parse_ident(p);
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auto hi = p.get_span();
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expect(p, token.SEMI);
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ret @spanned(lo, hi, ast.view_item_export(id));
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}
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impure fn parse_view_item(parser p) -> @ast.view_item {
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alt (p.peek()) {
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case (token.USE) {
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ret parse_use(p);
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@ -2195,23 +2204,26 @@ impure fn parse_use_or_import(parser p) -> @ast.view_item {
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case (token.IMPORT) {
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ret parse_import(p);
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}
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case (token.EXPORT) {
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ret parse_export(p);
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}
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}
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}
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fn is_use_or_import(token.token t) -> bool {
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if (t == token.USE) {
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ret true;
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}
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if (t == token.IMPORT) {
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ret true;
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fn is_view_item(token.token t) -> bool {
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alt (t) {
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case (token.USE) { ret true; }
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case (token.IMPORT) { ret true; }
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case (token.EXPORT) { ret true; }
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case (_) {}
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}
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ret false;
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}
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impure fn parse_view(parser p, ast.mod_index index) -> vec[@ast.view_item] {
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let vec[@ast.view_item] items = vec();
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while (is_use_or_import(p.peek())) {
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auto item = parse_use_or_import(p);
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while (is_view_item(p.peek())) {
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auto item = parse_view_item(p);
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items += vec(item);
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ast.index_view_item(index, item);
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@ -2305,12 +2317,17 @@ impure fn parse_crate_directive(parser p) -> ast.crate_directive
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}
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case (token.USE) {
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auto vi = parse_use_or_import(p);
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auto vi = parse_view_item(p);
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ret spanned(lo, vi.span, ast.cdir_view_item(vi));
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}
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case (token.IMPORT) {
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auto vi = parse_use_or_import(p);
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auto vi = parse_view_item(p);
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ret spanned(lo, vi.span, ast.cdir_view_item(vi));
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}
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case (token.EXPORT) {
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auto vi = parse_view_item(p);
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ret spanned(lo, vi.span, ast.cdir_view_item(vi));
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}
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