19 lines
658 B
Rust
19 lines
658 B
Rust
import base::*;
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fn expand_syntax_ext(cx: ext_ctxt, sp: codemap::span, arg: ast::mac_arg,
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_body: ast::mac_body) -> @ast::expr {
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let args = get_mac_args_no_max(cx,sp,arg,1u,~"concat_idents");
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let mut res_str = ~"";
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for args.each |e| {
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res_str += *cx.parse_sess().interner.get(
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expr_to_ident(cx, e, ~"expected an ident"));
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}
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let res = cx.parse_sess().interner.intern(@res_str);
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return @{id: cx.next_id(),
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callee_id: cx.next_id(),
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node: ast::expr_path(@{span: sp, global: false, idents: ~[res],
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rp: none, types: ~[]}),
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span: sp};
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}
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