55 lines
1.0 KiB
C++
55 lines
1.0 KiB
C++
#ifndef sk_LEXER_HPP
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#define sk_LEXER_HPP
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#include "commons.hpp"
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#include "Node.hpp"
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#include "Logger.hpp"
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namespace sk
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{
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SK_ERROR(lexical_error);
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struct ScanInfo {
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bool ok = false;
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size_t cursor = 0;
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std::string repr;
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NodeType type;
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};
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using scanner_t = std::function<ScanInfo()>;
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class Lexer
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{
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public:
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explicit Lexer(std::filesystem::path path, Logger& logger);
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virtual ~Lexer();
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Loc loc() const { return m_loc; }
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void scan(std::string const& source);
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std::shared_ptr<Node> next();
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private:
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Loc m_loc;
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Logger& m_logger;
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std::string m_source;
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size_t m_cursor = 0;
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std::vector<scanner_t> m_scanners;
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void skip_spaces();
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ScanInfo scan_int();
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ScanInfo scan_float();
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ScanInfo scan_text(std::string const& text,
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NodeType type,
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bool value);
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ScanInfo scan_keyword(std::string const& text,
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NodeType type,
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bool value);
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ScanInfo scan_string();
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};
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}
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#endif
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