45 lines
852 B
C++
45 lines
852 B
C++
#ifndef roza_LEXER_HPP
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#define roza_LEXER_HPP
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#include "commons.hpp"
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#include "Node.hpp"
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#include "SrcLoc.hpp"
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#include "StatusLog.hpp"
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namespace roza
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{
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struct ScanInfo {
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std::shared_ptr<Node> node = nullptr;
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size_t cursor = 0;
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};
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using scanner = std::function<ScanInfo(void)>;
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class Lexer
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{
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public:
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explicit Lexer(StatusLog& log, SrcLoc loc);
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virtual ~Lexer();
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SrcLoc loc() const { return m_loc; }
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size_t size() const { return m_nodes.size(); }
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void scan(std::string const& source);
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void skip_blanks();
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std::shared_ptr<Node> get_or_nullptr(size_t index) const;
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private:
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StatusLog& m_log;
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SrcLoc m_loc;
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std::string m_source;
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size_t m_cursor = 0;
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std::vector<std::shared_ptr<Node>> m_nodes;
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std::vector<scanner> m_scanners;
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ScanInfo scan_int() const;
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};
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}
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#endif
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