mirror of
https://github.com/carbon-language/carbon-lang.git
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Jon Ross-PerkinsandRichard Smith
e7aebbe581
This is a primarily automated change:
- Search & replace for capitalization
-
`(CARBON_DIAGNOSTIC\((?:\n\s+)?\w+,(?:\n\s+)?\s\w+,(?:\n\s+)?\s")([A-Z])`
- `$1\L$2`
- Search & replace for period
-
`(CARBON_DIAGNOSTIC\((?:\n\s+)?\w+,(?:\n\s+)?\s\w+,(?:\n\s+)?\s"(?:[^)]|\n)+)\.("[,)])`
- `$1$2`
- Limited search & replace for `ERROR: ` -> `error: ` in streamed things
- Leaving a TODO for command_line because there's more cleanup that can
be done there
- Modify diagnostic_consumer.cpp
- ERROR -> error
- WARNING -> warning
---------
Co-authored-by: Richard Smith <richard@metafoo.co.uk>
33 lines
1.2 KiB
C++
33 lines
1.2 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/lex/helpers.h"
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namespace Carbon::Lex {
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auto CanLexInt(DiagnosticEmitter<const char*>& emitter, llvm::StringRef text)
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-> bool {
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// llvm::getAsInteger is used for parsing, but it's quadratic and visibly slow
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// on large integer values. This limit exists to avoid hitting those limits.
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// Per https://github.com/carbon-language/carbon-lang/issues/980, it may be
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// feasible to optimize integer parsing in order to address performance if
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// this limit becomes an issue.
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//
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// 2^128 would be 39 decimal digits or 128 binary. In either case, this limit
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// is far above the threshold for normal ints.
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constexpr size_t DigitLimit = 1000;
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if (text.size() > DigitLimit) {
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CARBON_DIAGNOSTIC(
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TooManyDigits, Error,
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"found a sequence of {0} digits, which is greater than the "
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"limit of {1}",
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size_t, size_t);
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emitter.Emit(text.begin(), TooManyDigits, text.size(), DigitLimit);
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return false;
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}
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return true;
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}
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} // namespace Carbon::Lex
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