a447c3ca16
Instead of just saying "unterminated format string" and friends, instead print information about what was expected and what was found. Closes #9931
79 lines
3.9 KiB
Rust
79 lines
3.9 KiB
Rust
// 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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fn main() {
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// bad arguments to the format! call
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format!("{}"); //~ ERROR: invalid reference to argument
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format!("{1}", 1); //~ ERROR: invalid reference to argument `1`
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//~^ ERROR: argument never used
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format!("{foo}"); //~ ERROR: no argument named `foo`
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format!("{}", 1, 2); //~ ERROR: argument never used
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format!("{1}", 1, 2); //~ ERROR: argument never used
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format!("{}", 1, foo=2); //~ ERROR: named argument never used
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format!("{foo}", 1, foo=2); //~ ERROR: argument never used
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format!("", foo=2); //~ ERROR: named argument never used
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format!("{0:d} {0:s}", 1); //~ ERROR: redeclared with type `s`
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format!("{foo:d} {foo:s}", foo=1); //~ ERROR: redeclared with type `s`
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format!("{foo}", foo=1, foo=2); //~ ERROR: duplicate argument
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format!("#"); //~ ERROR: `#` reference used
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format!("", foo=1, 2); //~ ERROR: positional arguments cannot follow
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format!("{0, select, a{} a{} other{}}", "a"); //~ ERROR: duplicate selector
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format!("{0, plural, =1{} =1{} other{}}", 1u); //~ ERROR: duplicate selector
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format!("{0, plural, one{} one{} other{}}", 1u); //~ ERROR: duplicate selector
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// bad syntax of the format string
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format!("{"); //~ ERROR: expected `}` but string was terminated
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format!("\\ "); //~ ERROR: invalid escape
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format!("\\"); //~ ERROR: expected an escape
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format!("{0, }", 1); //~ ERROR: expected method
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format!("{0, foo}", 1); //~ ERROR: unknown method
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format!("{0, select}", "a"); //~ ERROR: expected `,` but found `}`
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format!("{0, plural}", 1); //~ ERROR: expected `,` but found `}`
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format!("{0, select, a{{}", 1); //~ ERROR: expected `}` but string was terminated
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format!("{0, select, {} other{}}", "a"); //~ ERROR: empty selector
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format!("{0, select, other{} other{}}", "a"); //~ ERROR: multiple `other`
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format!("{0, plural, offset: other{}}", "a"); //~ ERROR: must be an integer
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format!("{0, plural, offset 1 other{}}", "a"); //~ ERROR: expected `:` but found `1`
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format!("{0, plural, =a{} other{}}", "a"); //~ ERROR: followed by an integer
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format!("{0, plural, a{} other{}}", "a"); //~ ERROR: unexpected plural
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format!("{0, select, a{}}", "a"); //~ ERROR: must provide an `other`
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format!("{0, plural, =1{}}", "a"); //~ ERROR: must provide an `other`
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format!("{0, plural, other{{0:s}}}", "a"); //~ ERROR: previously used as
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format!("{:s} {0, plural, other{}}", "a"); //~ ERROR: argument used to
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format!("{0, select, other{}} \
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{0, plural, other{}}", "a");
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//~^ ERROR: declared with multiple formats
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// It should be illegal to use implicit placement arguments nested inside of
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// format strings because otherwise the "internal pointer of which argument
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// is next" would be invalidated if different cases had different numbers of
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// arguments.
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format!("{1, select, other{{}}}", 1, "a"); //~ ERROR: cannot use implicit
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format!("{1, plural, other{{}}}", 1, 1); //~ ERROR: cannot use implicit
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format!("{0, plural, other{{1:.*d}}}", 1, 2); //~ ERROR: cannot use implicit
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format!("foo } bar"); //~ ERROR: unmatched `}` found
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format!("foo }"); //~ ERROR: unmatched `}` found
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format!(); //~ ERROR: requires at least a format string argument
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format!("" 1); //~ ERROR: expected token: `,`
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format!("", 1 1); //~ ERROR: expected token: `,`
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}
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