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LibGUI: Remove GML prefix in favor of proper namespace
Prefixes are very much a C thing which we don't need in C++. This commit moves all GML-related classes in LibGUI into the GUI::GML namespace, a change somewhat overdue.
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parent
89201b682b
commit
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17 changed files with 129 additions and 125 deletions
154
Userland/Libraries/LibGUI/GML/Lexer.cpp
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154
Userland/Libraries/LibGUI/GML/Lexer.cpp
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "Lexer.h"
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#include <AK/CharacterTypes.h>
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#include <AK/Vector.h>
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namespace GUI::GML {
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Lexer::Lexer(StringView input)
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: m_input(input)
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{
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}
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char Lexer::peek(size_t offset) const
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{
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if ((m_index + offset) >= m_input.length())
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return 0;
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return m_input[m_index + offset];
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}
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char Lexer::consume()
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{
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VERIFY(m_index < m_input.length());
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char ch = m_input[m_index++];
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if (ch == '\n') {
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m_position.line++;
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m_position.column = 0;
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} else {
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m_position.column++;
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}
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return ch;
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}
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constexpr bool is_valid_identifier_start(char ch)
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{
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return is_ascii_alpha(ch) || ch == '_';
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}
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constexpr bool is_valid_identifier_character(char ch)
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{
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return is_ascii_alphanumeric(ch) || ch == '_';
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}
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constexpr bool is_valid_class_character(char ch)
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{
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return is_ascii_alphanumeric(ch) || ch == '_' || ch == ':';
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}
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Vector<Token> Lexer::lex()
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{
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Vector<Token> tokens;
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size_t token_start_index = 0;
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Position token_start_position;
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auto begin_token = [&] {
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token_start_index = m_index;
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token_start_position = m_position;
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};
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auto commit_token = [&](auto type) {
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Token token;
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token.m_view = m_input.substring_view(token_start_index, m_index - token_start_index);
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token.m_type = type;
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token.m_start = token_start_position;
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token.m_end = m_position;
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tokens.append(token);
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};
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auto consume_class = [&] {
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begin_token();
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consume();
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commit_token(Token::Type::ClassMarker);
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begin_token();
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while (is_valid_class_character(peek()))
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consume();
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commit_token(Token::Type::ClassName);
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};
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while (m_index < m_input.length()) {
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if (is_ascii_space(peek(0))) {
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begin_token();
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while (is_ascii_space(peek()))
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consume();
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continue;
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}
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// C++ style comments
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if (peek(0) && peek(0) == '/' && peek(1) == '/') {
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begin_token();
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while (peek() && peek() != '\n')
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consume();
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commit_token(Token::Type::Comment);
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continue;
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}
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if (peek(0) == '{') {
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begin_token();
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consume();
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commit_token(Token::Type::LeftCurly);
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continue;
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}
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if (peek(0) == '}') {
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begin_token();
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consume();
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commit_token(Token::Type::RightCurly);
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continue;
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}
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if (peek(0) == '@') {
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consume_class();
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continue;
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}
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if (is_valid_identifier_start(peek(0))) {
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begin_token();
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consume();
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while (is_valid_identifier_character(peek(0)))
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consume();
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commit_token(Token::Type::Identifier);
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continue;
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}
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if (peek(0) == ':') {
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begin_token();
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consume();
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commit_token(Token::Type::Colon);
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while (is_ascii_space(peek()))
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consume();
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if (peek(0) == '@') {
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consume_class();
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} else {
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begin_token();
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while (peek() && peek() != '\n')
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consume();
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commit_token(Token::Type::JsonValue);
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}
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continue;
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}
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consume();
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commit_token(Token::Type::Unknown);
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}
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return tokens;
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}
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}
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