30 lines
1022 B
Rust
30 lines
1022 B
Rust
// Copyright 2012-2013 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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/// Deprecated fmt! syntax 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::build::AstBuilder;
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pub fn expand_syntax_ext(ecx: &mut base::ExtCtxt,
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sp: Span,
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_tts: &[ast::TokenTree])
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-> Box<base::MacResult+'static> {
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ecx.span_err(sp, "`fmt!` is deprecated, use `format!` instead");
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ecx.parse_sess.span_diagnostic.span_note(sp,
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"see http://doc.rust-lang.org/std/fmt/ \
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for documentation");
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base::MacExpr::new(ecx.expr_uint(sp, 2))
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}
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