diff options
Diffstat (limited to 'src/include/synext.hpp')
| -rw-r--r-- | src/include/synext.hpp | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/src/include/synext.hpp b/src/include/synext.hpp index 6d229aef..f8d128f7 100644 --- a/src/include/synext.hpp +++ b/src/include/synext.hpp @@ -26,11 +26,18 @@ class TokenTree; #include <string> #include <memory> +enum class AttrStage +{ + EarlyPre, + EarlyPost, + LatePre, + LatePost, +}; class ExpandDecorator { public: - virtual bool expand_before_macros() const = 0; + virtual AttrStage stage() const = 0; virtual void handle(const AST::MetaItem& mi, AST::Crate& crate) const {} virtual void handle(const AST::MetaItem& mi, AST::Crate& crate, AST::MacroInvocation& mac) const {} @@ -38,11 +45,21 @@ public: virtual void handle(const AST::MetaItem& mi, AST::ExprNode& expr) const {}; }; +enum class MacroPosition +{ + Item, + Stmt, + Expr, + Type, + Pattern, +}; class ExpandProcMacro { public: - virtual AST::Expr expand(const ::std::string& ident, const TokenTree& tt, AST::Module& mod) = 0; + virtual bool expand_early() const = 0; + + virtual AST::Expr expand(const ::std::string& ident, const TokenTree& tt, AST::Module& mod, MacroPosition position) = 0; }; #define STATIC_DECORATOR(ident, _handler_class) \ @@ -51,8 +68,15 @@ public: Register_Synext_Decorator( ident, ::std::unique_ptr<ExpandDecorator>(new _handler_class()) ); \ } \ } s_register_##_handler_class; +#define STATIC_MACRO(ident, _handler_class) \ + struct register_##_handler_class##_c {\ + register_##_handler_class##_c() {\ + Register_Synext_Macro( ident, ::std::unique_ptr<ExpandProcMacro>(new _handler_class()) ); \ + } \ + } s_register_##_handler_class; extern void Register_Synext_Decorator(::std::string name, ::std::unique_ptr<ExpandDecorator> handler); +extern void Register_Synext_Macro(::std::string name, ::std::unique_ptr<ExpandProcMacro> handler); #endif |