91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
#include "register_manager.hh"
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#include "assert.hh"
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#include "id_map.hh"
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#include "utils.hh"
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namespace Kakoune
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{
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// static value register, which can be modified
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// using operator=, so should be user modifiable
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class StaticRegister : public Register
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{
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public:
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Register& operator=(memoryview<String> values) override
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{
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m_content = std::vector<String>(values.begin(), values.end());
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return *this;
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}
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memoryview<String> values(const Context&) override
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{
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if (m_content.empty())
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return memoryview<String>(ms_empty);
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else
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return memoryview<String>(m_content);
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}
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protected:
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std::vector<String> m_content;
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static const String ms_empty;
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};
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const String StaticRegister::ms_empty;
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// Dynamic value register, use it's RegisterRetriever
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// to get it's value when needed.
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class DynamicRegister : public StaticRegister
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{
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public:
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DynamicRegister(RegisterRetriever function)
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: m_function(std::move(function)) {}
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Register& operator=(memoryview<String> values) override
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{
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throw runtime_error("this register is not assignable");
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}
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memoryview<String> values(const Context& context) override
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{
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m_content = m_function(context);
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return StaticRegister::values(context);
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}
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private:
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RegisterRetriever m_function;
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};
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Register& RegisterManager::operator[](StringView reg)
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{
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if (reg.length() == 1)
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return (*this)[reg[0]];
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static const id_map<Codepoint> reg_names = {
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{ "slash", '/' },
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{ "dquote", '"' },
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{ "pipe", '|' }
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};
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auto it = reg_names.find(reg);
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if (it == reg_names.end())
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throw runtime_error("no such register: " + reg);
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return (*this)[it->second];
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}
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Register& RegisterManager::operator[](Codepoint c)
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{
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auto& reg_ptr = m_registers[c];
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if (not reg_ptr)
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reg_ptr.reset(new StaticRegister());
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return *reg_ptr;
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}
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void RegisterManager::register_dynamic_register(char reg, RegisterRetriever function)
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{
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auto& reg_ptr = m_registers[reg];
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kak_assert(not reg_ptr);
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reg_ptr.reset(new DynamicRegister(std::move(function)));
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}
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}
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