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https://github.com/SerenityOS/serenity
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5d180d1f99
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED) Since all of these checks are done in release builds as well, let's rename them to VERIFY to prevent confusion, as everyone is used to assertions being compiled out in release. We can introduce a new ASSERT macro that is specifically for debug checks, but I'm doing this wholesale conversion first since we've accumulated thousands of these already, and it's not immediately obvious which ones are suitable for ASSERT.
99 lines
3.6 KiB
C++
99 lines
3.6 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/GenericLexer.h>
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#include <AK/HashMap.h>
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#include <AK/String.h>
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#include <AK/StringBuilder.h>
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namespace AK {
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class SourceGenerator {
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AK_MAKE_NONCOPYABLE(SourceGenerator);
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public:
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using MappingType = HashMap<StringView, String>;
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explicit SourceGenerator(StringBuilder& builder, char opening = '@', char closing = '@')
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: m_builder(builder)
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, m_opening(opening)
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, m_closing(closing)
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{
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}
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explicit SourceGenerator(StringBuilder& builder, const MappingType& mapping, char opening = '@', char closing = '@')
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: m_builder(builder)
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, m_mapping(mapping)
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, m_opening(opening)
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, m_closing(closing)
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{
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}
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SourceGenerator fork() { return SourceGenerator { m_builder, m_mapping, m_opening, m_closing }; }
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void set(StringView key, String value) { m_mapping.set(key, value); }
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String get(StringView key) const { return m_mapping.get(key).value(); }
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StringView as_string_view() const { return m_builder.string_view(); }
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String as_string() const { return m_builder.build(); }
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void append(StringView pattern)
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{
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GenericLexer lexer { pattern };
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while (!lexer.is_eof()) {
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// FIXME: It is a bit inconvenient, that 'consume_until' also consumes the 'stop' character, this makes
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// the method less generic because there is no way to check if the 'stop' character ever appeared.
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const auto consume_until_without_consuming_stop_character = [&](char stop) {
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return lexer.consume_while([&](char ch) { return ch != stop; });
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};
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m_builder.append(consume_until_without_consuming_stop_character(m_opening));
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if (lexer.consume_specific(m_opening)) {
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const auto placeholder = consume_until_without_consuming_stop_character(m_closing);
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if (!lexer.consume_specific(m_closing))
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VERIFY_NOT_REACHED();
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m_builder.append(get(placeholder));
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} else {
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VERIFY(lexer.is_eof());
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}
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}
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}
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private:
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StringBuilder& m_builder;
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MappingType m_mapping;
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char m_opening, m_closing;
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};
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}
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using AK::SourceGenerator;
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