29 lines
957 B
Rust
29 lines
957 B
Rust
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// Copyright 2013 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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/* The compiler code necessary to support the bytes! extension. */
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use ast;
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use codemap::span;
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use ext::base::*;
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use ext::base;
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use ext::build::{mk_u8, mk_slice_vec_e};
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pub fn expand_syntax_ext(cx: @ext_ctxt, sp: span, tts: &[ast::token_tree])
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-> base::MacResult {
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let var = get_single_str_from_tts(cx, sp, tts, "bytes!");
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let mut bytes = ~[];
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for var.each |byte| {
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bytes.push(mk_u8(cx, sp, byte));
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}
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let e = mk_slice_vec_e(cx, sp, bytes);
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MRExpr(e)
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}
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