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#ifndef SASS_EXTEND_H
#define SASS_EXTEND_H
#include <string>
#include <set>
#include "ast.hpp"
#include "node.hpp"
#include "eval.hpp"
#include "operation.hpp"
#include "subset_map.hpp"
#include "ast_fwd_decl.hpp"
namespace Sass {
Node subweave(Node& one, Node& two);
class Extend : public Operation_CRTP<void, Extend> {
Subset_Map& subset_map;
Eval* eval;
void fallback_impl(AST_Node_Ptr n) { }
private:
std::unordered_map<
Selector_List_Obj, // key
Selector_List_Obj, // value
HashNodes, // hasher
CompareNodes // compare
> memoizeList;
std::unordered_map<
Complex_Selector_Obj, // key
Node, // value
HashNodes, // hasher
CompareNodes // compare
> memoizeComplex;
/* this turned out to be too much overhead
re-evaluate once we store an ast selector
std::unordered_map<
Compound_Selector_Obj, // key
Node, // value
HashNodes, // hasher
CompareNodes // compare
> memoizeCompound;
*/
void extendObjectWithSelectorAndBlock(Ruleset_Ptr pObject);
Node extendComplexSelector(Complex_Selector_Ptr sel, CompoundSelectorSet& seen, bool isReplace, bool isOriginal);
Node extendCompoundSelector(Compound_Selector_Ptr sel, CompoundSelectorSet& seen, bool isReplace);
bool complexSelectorHasExtension(Complex_Selector_Ptr selector, CompoundSelectorSet& seen);
Node trim(Node& seqses, bool isReplace);
Node weave(Node& path);
public:
void setEval(Eval& eval);
Selector_List_Ptr extendSelectorList(Selector_List_Obj pSelectorList, bool isReplace, bool& extendedSomething, CompoundSelectorSet& seen);
Selector_List_Ptr extendSelectorList(Selector_List_Obj pSelectorList, bool isReplace = false) {
bool extendedSomething = false;
CompoundSelectorSet seen;
return extendSelectorList(pSelectorList, isReplace, extendedSomething, seen);
}
Selector_List_Ptr extendSelectorList(Selector_List_Obj pSelectorList, CompoundSelectorSet& seen) {
bool isReplace = false;
bool extendedSomething = false;
return extendSelectorList(pSelectorList, isReplace, extendedSomething, seen);
}
Extend(Subset_Map&);
~Extend() { }
void operator()(Block_Ptr);
void operator()(Ruleset_Ptr);
void operator()(Supports_Block_Ptr);
void operator()(Media_Block_Ptr);
void operator()(Directive_Ptr);
template <typename U>
void fallback(U x) { return fallback_impl(x); }
};
}
#endif
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