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LibGLSL: Add initial GLSL parser implementation
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133
Userland/Libraries/LibGLSL/Token.h
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133
Userland/Libraries/LibGLSL/Token.h
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/*
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* Copyright (c) 2023, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/StringView.h>
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#include <AK/Types.h>
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namespace GLSL {
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#define FOR_EACH_TOKEN_TYPE \
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__TOKEN(Unknown) \
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__TOKEN(Whitespace) \
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__TOKEN(PreprocessorStatement) \
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__TOKEN(IncludeStatement) \
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__TOKEN(IncludePath) \
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__TOKEN(LeftParen) \
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__TOKEN(RightParen) \
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__TOKEN(LeftCurly) \
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__TOKEN(RightCurly) \
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__TOKEN(LeftBracket) \
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__TOKEN(RightBracket) \
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__TOKEN(Less) \
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__TOKEN(Greater) \
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__TOKEN(LessEquals) \
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__TOKEN(GreaterEquals) \
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__TOKEN(LessLess) \
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__TOKEN(GreaterGreater) \
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__TOKEN(LessLessEquals) \
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__TOKEN(GreaterGreaterEquals) \
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__TOKEN(Comma) \
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__TOKEN(Plus) \
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__TOKEN(PlusPlus) \
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__TOKEN(PlusEquals) \
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__TOKEN(Minus) \
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__TOKEN(MinusMinus) \
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__TOKEN(MinusEquals) \
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__TOKEN(Asterisk) \
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__TOKEN(AsteriskEquals) \
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__TOKEN(Slash) \
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__TOKEN(SlashEquals) \
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__TOKEN(Percent) \
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__TOKEN(PercentEquals) \
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__TOKEN(Caret) \
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__TOKEN(CaretCaret) \
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__TOKEN(CaretEquals) \
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__TOKEN(ExclamationMark) \
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__TOKEN(ExclamationMarkEquals) \
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__TOKEN(Equals) \
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__TOKEN(EqualsEquals) \
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__TOKEN(And) \
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__TOKEN(AndAnd) \
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__TOKEN(AndEquals) \
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__TOKEN(Pipe) \
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__TOKEN(PipePipe) \
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__TOKEN(PipeEquals) \
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__TOKEN(Tilde) \
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__TOKEN(QuestionMark) \
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__TOKEN(Colon) \
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__TOKEN(Semicolon) \
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__TOKEN(Dot) \
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__TOKEN(DoubleQuotedString) \
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__TOKEN(SingleQuotedString) \
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__TOKEN(RawString) \
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__TOKEN(EscapeSequence) \
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__TOKEN(Integer) \
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__TOKEN(Float) \
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__TOKEN(Keyword) \
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__TOKEN(KnownType) \
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__TOKEN(Identifier) \
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__TOKEN(EOF_TOKEN)
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struct Position {
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size_t line { 0 };
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size_t column { 0 };
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bool operator<(Position const&) const;
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bool operator<=(Position const&) const;
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bool operator>(Position const&) const;
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bool operator==(Position const&) const;
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};
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struct Token {
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enum class Type {
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#define __TOKEN(x) x,
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FOR_EACH_TOKEN_TYPE
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#undef __TOKEN
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};
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Token(Type type, Position const& start, Position const& end, StringView text)
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: m_type(type)
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, m_start(start)
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, m_end(end)
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, m_text(text)
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{
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}
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static char const* type_to_string(Type t)
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{
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switch (t) {
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#define __TOKEN(x) \
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case Type::x: \
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return #x;
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FOR_EACH_TOKEN_TYPE
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#undef __TOKEN
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}
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VERIFY_NOT_REACHED();
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}
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ErrorOr<String> to_string() const;
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ErrorOr<String> type_as_string() const;
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Position const& start() const { return m_start; }
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Position const& end() const { return m_end; }
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void set_start(Position const& other) { m_start = other; }
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void set_end(Position const& other) { m_end = other; }
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Type type() const { return m_type; }
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StringView text() const { return m_text; }
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private:
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Type m_type { Type::Unknown };
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Position m_start;
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Position m_end;
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StringView m_text;
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};
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}
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#undef FOR_EACH_TOKEN_TYPE
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