forked from Bananymous/banan-os
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
#pragma once
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#include "CommandTypes.h"
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#include "Execute.h"
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#include "Token.h"
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#include <BAN/Function.h>
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#include <BAN/NoCopyMove.h>
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#include <BAN/Optional.h>
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#include <BAN/Queue.h>
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#include <BAN/Vector.h>
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class TokenParser
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{
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BAN_NON_COPYABLE(TokenParser);
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BAN_NON_MOVABLE(TokenParser);
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public:
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using InputFunction = BAN::Function<BAN::Optional<BAN::String>(BAN::Optional<BAN::StringView>)>;
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public:
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TokenParser(const InputFunction& input_function)
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: m_input_function(input_function)
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{ }
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Execute& execute() { return m_execute; }
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const Execute& execute() const { return m_execute; }
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[[nodiscard]] bool main_loop(bool break_on_error);
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private:
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const Token& peek_token() const;
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Token read_token();
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void consume_token();
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BAN::ErrorOr<void> feed_tokens(BAN::Vector<Token>&& tokens);
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BAN::ErrorOr<void> unget_token(Token&& token);
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BAN::ErrorOr<void> ask_input_tokens(BAN::StringView prompt, bool add_newline);
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BAN::ErrorOr<void> run(BAN::Vector<Token>&&);
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BAN::ErrorOr<CommandArgument::ArgumentPart> parse_backslash(bool is_quoted);
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BAN::ErrorOr<CommandArgument::ArgumentPart> parse_dollar();
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BAN::ErrorOr<CommandArgument::ArgumentPart> parse_single_quote();
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BAN::ErrorOr<CommandArgument> parse_argument();
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BAN::ErrorOr<SingleCommand::Redirection> parse_redirection();
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BAN::ErrorOr<SingleCommand> parse_single_command();
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BAN::ErrorOr<PipedCommand> parse_piped_command();
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BAN::ErrorOr<CommandTree> parse_command_tree();
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private:
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Execute m_execute;
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Token m_eof_token { Token::Type::EOF_ };
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BAN::Queue<BAN::Vector<Token>> m_token_stream;
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InputFunction m_input_function;
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};
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