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#ifndef SASS_EXPAND_H
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#define SASS_EXPAND_H
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#include <vector>
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#include "ast.hpp"
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#include "eval.hpp"
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#include "operation.hpp"
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#include "environment.hpp"
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namespace Sass {
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class Listize;
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class Context;
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class Eval;
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struct Backtrace;
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class Expand : public Operation_CRTP<Statement_Ptr, Expand> {
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public:
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Env* environment();
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Selector_List_Obj selector();
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Backtrace* backtrace();
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Context& ctx;
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Eval eval;
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size_t recursions;
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bool in_keyframes;
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bool at_root_without_rule;
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bool old_at_root_without_rule;
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// it's easier to work with vectors
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std::vector<Env*> env_stack;
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std::vector<Block_Ptr> block_stack;
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std::vector<AST_Node_Obj> call_stack;
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std::vector<Selector_List_Obj> selector_stack;
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std::vector<Media_Block_Ptr> media_block_stack;
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std::vector<Backtrace*> backtrace_stack;
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Statement_Ptr fallback_impl(AST_Node_Ptr n);
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private:
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void expand_selector_list(Selector_Obj, Selector_List_Obj extender);
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public:
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Expand(Context&, Env*, Backtrace*, std::vector<Selector_List_Obj>* stack = NULL);
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~Expand() { }
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Block_Ptr operator()(Block_Ptr);
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Statement_Ptr operator()(Ruleset_Ptr);
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Statement_Ptr operator()(Media_Block_Ptr);
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Statement_Ptr operator()(Supports_Block_Ptr);
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Statement_Ptr operator()(At_Root_Block_Ptr);
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Statement_Ptr operator()(Directive_Ptr);
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Statement_Ptr operator()(Declaration_Ptr);
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Statement_Ptr operator()(Assignment_Ptr);
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Statement_Ptr operator()(Import_Ptr);
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Statement_Ptr operator()(Import_Stub_Ptr);
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Statement_Ptr operator()(Warning_Ptr);
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Statement_Ptr operator()(Error_Ptr);
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Statement_Ptr operator()(Debug_Ptr);
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Statement_Ptr operator()(Comment_Ptr);
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Statement_Ptr operator()(If_Ptr);
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Statement_Ptr operator()(For_Ptr);
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Statement_Ptr operator()(Each_Ptr);
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Statement_Ptr operator()(While_Ptr);
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Statement_Ptr operator()(Return_Ptr);
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Statement_Ptr operator()(Extension_Ptr);
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Statement_Ptr operator()(Definition_Ptr);
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Statement_Ptr operator()(Mixin_Call_Ptr);
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Statement_Ptr operator()(Content_Ptr);
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template <typename U>
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Statement_Ptr fallback(U x) { return fallback_impl(x); }
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void append_block(Block_Ptr);
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};
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}
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#endif
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