88 lines
2.2 KiB
Rust
88 lines
2.2 KiB
Rust
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// xfail-pretty
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use std;
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use rustc;
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import rustc::*;
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import std::io::*;
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import rustc::driver::diagnostic;
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import rustc::syntax::ast;
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import rustc::syntax::codemap;
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import rustc::syntax::parse::parser;
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import rustc::syntax::print::*;
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fn new_parse_sess() -> parser::parse_sess {
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let cm = codemap::new_codemap();
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let handler = diagnostic::mk_handler(option::none);
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let sess = @{
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cm: cm,
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mutable next_id: 1,
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span_diagnostic: diagnostic::mk_span_handler(handler, cm),
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mutable chpos: 0u,
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mutable byte_pos: 0u
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};
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ret sess;
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}
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iface fake_ext_ctxt {
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fn session() -> fake_session;
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}
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type fake_options = {cfg: ast::crate_cfg};
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type fake_session = {opts: @fake_options,
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parse_sess: parser::parse_sess};
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impl of fake_ext_ctxt for fake_session {
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fn session() -> fake_session {self}
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}
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fn mk_ctxt() -> fake_ext_ctxt {
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let opts : fake_options = {cfg: []};
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{opts: @opts, parse_sess: new_parse_sess()} as fake_ext_ctxt
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}
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fn main() {
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let ext_cx = mk_ctxt();
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let abc = #ast{23};
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check_pp(abc, pprust::print_expr, "23");
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let expr = #ast{1 - $0 + 8};
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check_pp(expr, pprust::print_expr, "1 - $0 + 8");
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let expr2 = rustc::syntax::ext::qquote::replace(expr, [abc]);
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check_pp(expr2, pprust::print_expr, "1 - 23 + 8");
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let expr3 = #ast{2 - $(abc) + 7};
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check_pp(expr3, pprust::print_expr, "2 - 23 + 7");
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let expr4 = #ast{2 - $(#(3)) + 9};
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check_pp(expr4, pprust::print_expr, "2 - 3 + 9");
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let ty = #ast(ty){option<int>};
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check_pp(ty, pprust::print_type, "option<int>");
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let item = #ast(item){const x : int = 10;};
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check_pp(item, pprust::print_item, "const x: int = 10;");
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let stmt = #ast(stmt){let x = 20;};
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check_pp(*stmt, pprust::print_stmt, "let x = 20;");
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let pat = #ast(pat){some(_)};
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check_pp(pat, pprust::print_pat, "some(_)");
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}
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fn check_pp<T>(expr: T, f: fn(pprust::ps, T), expect: str) {
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let buf = mk_mem_buffer();
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let pp = pprust::rust_printer(buf as std::io::writer);
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f(pp, expr);
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pp::eof(pp.s);
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let str = mem_buffer_str(buf);
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stdout().write_line(str);
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if expect != "" {assert str == expect;}
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}
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