// Copyright 2017 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_UTIL_MISC_LEXING_H_
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#define CRASHPAD_UTIL_MISC_LEXING_H_
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namespace crashpad {
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//! \brief Match a pattern at the start of a char string.
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//!
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//! \param[in,out] input A pointer to the char string to match against. \a input
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//! is advanced past the matched pattern if it is found.
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//! \param[in] pattern The pattern to match at the start of \a input.
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//! \return `true` if the pattern is matched exactly and \a input is advanced,
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//! otherwise `false`.
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bool AdvancePastPrefix(const char** input, const char* pattern);
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//! \brief Convert a prefix of a char string to a numeric value.
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//!
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//! Valid values are positive or negative decimal numbers, matching the regular
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//! expression "-?\d+", and within the limits of T.
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//!
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//! \param[in,out] input A pointer to the char string to match against. \a input
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//! is advanced past the number if one is found.
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//! \param[out] value The converted number, if one is found.
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//! \return `true` if a number is found at the start of \a input and \a input is
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//! advanced, otherwise `false`.
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template <typename T>
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bool AdvancePastNumber(const char** input, T* value);
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_MISC_LEXING_H
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