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81 lines
2.3 KiB
81 lines
2.3 KiB
3 years ago
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#ifndef SASS_AST_DEF_MACROS_H
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#define SASS_AST_DEF_MACROS_H
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// Helper class to switch a flag and revert once we go out of scope
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template <class T>
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class LocalOption {
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private:
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T* var; // pointer to original variable
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T orig; // copy of the original option
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public:
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LocalOption(T& var)
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{
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this->var = &var;
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this->orig = var;
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}
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LocalOption(T& var, T orig)
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{
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this->var = &var;
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this->orig = var;
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*(this->var) = orig;
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}
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void reset()
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{
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*(this->var) = this->orig;
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}
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~LocalOption() {
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*(this->var) = this->orig;
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}
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};
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#define LOCAL_FLAG(name,opt) LocalOption<bool> flag_##name(name, opt)
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#define LOCAL_COUNT(name,opt) LocalOption<size_t> cnt_##name(name, opt)
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#define NESTING_GUARD(name) \
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LocalOption<size_t> cnt_##name(name, name + 1); \
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if (name > MAX_NESTING) throw Exception::NestingLimitError(pstate, traces); \
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#define ATTACH_OPERATIONS()\
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virtual void perform(Operation<void>* op) { (*op)(this); }\
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virtual AST_Node_Ptr perform(Operation<AST_Node_Ptr>* op) { return (*op)(this); }\
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virtual Statement_Ptr perform(Operation<Statement_Ptr>* op) { return (*op)(this); }\
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virtual Expression_Ptr perform(Operation<Expression_Ptr>* op) { return (*op)(this); }\
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virtual Selector_Ptr perform(Operation<Selector_Ptr>* op) { return (*op)(this); }\
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virtual std::string perform(Operation<std::string>* op) { return (*op)(this); }\
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virtual union Sass_Value* perform(Operation<union Sass_Value*>* op) { return (*op)(this); }\
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virtual Value_Ptr perform(Operation<Value_Ptr>* op) { return (*op)(this); }
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#define ADD_PROPERTY(type, name)\
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protected:\
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type name##_;\
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public:\
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type name() const { return name##_; }\
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type name(type name##__) { return name##_ = name##__; }\
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private:
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#define HASH_PROPERTY(type, name)\
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protected:\
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type name##_;\
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public:\
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type name() const { return name##_; }\
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type name(type name##__) { hash_ = 0; return name##_ = name##__; }\
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private:
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#define ADD_CONSTREF(type, name) \
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protected: \
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type name##_; \
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public: \
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const type& name() const { return name##_; } \
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void name(type name##__) { name##_ = name##__; } \
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private:
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#define HASH_CONSTREF(type, name) \
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protected: \
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type name##_; \
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public: \
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const type& name() const { return name##_; } \
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void name(type name##__) { hash_ = 0; name##_ = name##__; } \
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private:
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#endif
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