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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TEXT_NUMBER_PARSING_OPTIONS_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TEXT_NUMBER_PARSING_OPTIONS_H_
#include <ostream>
#include "base/check_op.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace WTF {
// Copyable and immutable object representing number parsing flags.
class NumberParsingOptions final {
STACK_ALLOCATED();
public:
// 'Strict' behavior for WTF::String.
static constexpr NumberParsingOptions Strict() {
return NumberParsingOptions().SetAcceptLeadingPlus().SetAcceptWhiteSpace();
}
// Non-'Strict' behavior for WTF::String.
static constexpr NumberParsingOptions Loose() {
return Strict().SetAcceptTrailingGarbage();
}
// Construct an instance without any flags set.
constexpr NumberParsingOptions()
: accept_trailing_garbage_(false),
accept_leading_plus_(false),
accept_leading_trailing_whitespace_(false),
accept_minus_zero_for_unsigned_(false) {}
// Returns a new instance by merging |this| and AcceptTrailingGarbage flag.
constexpr NumberParsingOptions SetAcceptTrailingGarbage() const {
NumberParsingOptions copy = *this;
copy.accept_trailing_garbage_ = true;
return copy;
}
// Returns a new instance by merging |this| and AcceptLeadingPlus flag.
constexpr NumberParsingOptions SetAcceptLeadingPlus() const {
NumberParsingOptions copy = *this;
copy.accept_leading_plus_ = true;
return copy;
}
// Returns a new instance by merging |this| and AcceptWhiteSpace flag.
constexpr NumberParsingOptions SetAcceptWhiteSpace() const {
NumberParsingOptions copy = *this;
copy.accept_leading_trailing_whitespace_ = true;
return copy;
}
// Returns a new instance by merging |this| and AcceptMinusZeroForUnsigned
// flag.
constexpr NumberParsingOptions SetAcceptMinusZeroForUnsigned() const {
NumberParsingOptions copy = *this;
copy.accept_minus_zero_for_unsigned_ = true;
return copy;
}
bool AcceptTrailingGarbage() const { return accept_trailing_garbage_; }
bool AcceptLeadingPlus() const { return accept_leading_plus_; }
bool AcceptWhitespace() const { return accept_leading_trailing_whitespace_; }
bool AcceptMinusZeroForUnsigned() const {
return accept_minus_zero_for_unsigned_;
}
private:
unsigned accept_trailing_garbage_ : 1;
unsigned accept_leading_plus_ : 1;
unsigned accept_leading_trailing_whitespace_ : 1;
unsigned accept_minus_zero_for_unsigned_ : 1;
};
} // namespace WTF
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_TEXT_NUMBER_PARSING_OPTIONS_H_
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