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author | David Shah <davey1576@gmail.com> | 2018-07-02 15:13:09 +0200 |
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committer | David Shah <davey1576@gmail.com> | 2018-07-04 14:55:24 +0200 |
commit | 65195513eb2676d974f1cef94be5e84f42a52f0f (patch) | |
tree | 9cec33a31f9b15d4bf1bdc670231e411bc9f1fef /common/pywrappers.h | |
parent | 2e8c0c872f99276602f9cd0daf06bfaf11832a08 (diff) | |
download | nextpnr-65195513eb2676d974f1cef94be5e84f42a52f0f.tar.gz nextpnr-65195513eb2676d974f1cef94be5e84f42a52f0f.tar.bz2 nextpnr-65195513eb2676d974f1cef94be5e84f42a52f0f.zip |
python: Restructuring wrapper system
Signed-off-by: David Shah <davey1576@gmail.com>
Diffstat (limited to 'common/pywrappers.h')
-rw-r--r-- | common/pywrappers.h | 57 |
1 files changed, 41 insertions, 16 deletions
diff --git a/common/pywrappers.h b/common/pywrappers.h index 2c91f26f..fe786a3b 100644 --- a/common/pywrappers.h +++ b/common/pywrappers.h @@ -41,66 +41,91 @@ template <typename T> struct ContextualWrapper Context *ctx; T base; - ContextualWrapper(Context *c, T &&x) : ctx(c), base(x){}; + inline ContextualWrapper(Context *c, T &&x) : ctx(c), base(x){}; - operator T() { return base; }; + inline operator T() { return base; }; typedef T base_type; }; +template <typename T> struct WrapIfNotContext { + typedef ContextualWrapper<T> maybe_wrapped_t; +}; + +template <> struct WrapIfNotContext<Context> { + typedef Context maybe_wrapped_t; +}; + + +template <typename T> inline Context *get_ctx(typename WrapIfNotContext<T>::maybe_wrapped_t &wrp_ctx) { + return wrp_ctx.ctx; +} +template <> inline Context *get_ctx<Context>(WrapIfNotContext<Context>::maybe_wrapped_t &unwrp_ctx) { + return &unwrp_ctx; +} + +template <typename T> inline T&get_base(typename WrapIfNotContext<T>::maybe_wrapped_t &wrp_ctx) { + return wrp_ctx.base; +} +template <> inline Context &get_base<Context>(WrapIfNotContext<Context>::maybe_wrapped_t &unwrp_ctx) { + return unwrp_ctx; +} + template <typename T> ContextualWrapper<T> wrap_ctx(Context *ctx, T x) { return ContextualWrapper<T>(ctx, x); } // Dummy class, to be implemented by users -template <typename T> class string_converter; +template <typename T> struct string_converter; // Action options -template <typename T> class do_nothing +template <typename T> struct do_nothing { - T operator()(Context *ctx, T x) { return x; } + inline T operator()(Context *ctx, T x) { return x; } using ret_type = T; using arg_type = T; }; -template <typename T> class wrap_context +template <typename T> struct wrap_context { - ContextualWrapper<T> operator()(Context *ctx, T x) { return ContextualWrapper<T>(ctx, x); } + inline ContextualWrapper<T> operator()(Context *ctx, T x) { return ContextualWrapper<T>(ctx, x); } using arg_type = T; using ret_type = ContextualWrapper<T>; }; -template <typename T> class unwrap_context +template <typename T> struct unwrap_context { - T operator()(Context *ctx, ContextualWrapper<T> x) { return x.base; } + inline T operator()(Context *ctx, ContextualWrapper<T> x) { return x.base; } using ret_type = T; using arg_type = ContextualWrapper<T>; }; -template <typename T> class conv_from_string +template <typename T> struct conv_from_str { - T operator()(Context *ctx, std::string x) { return string_converter<T>().from_str(ctx, x); } + inline T operator()(Context *ctx, std::string x) { return string_converter<T>().from_str(ctx, x); } using ret_type = T; using arg_type = std::string; }; -template <typename T> class conv_to_string +template <typename T> struct conv_to_str { - std::string operator()(Context *ctx, T x) { return string_converter<T>().to_str(ctx, x); } + inline std::string operator()(Context *ctx, T x) { return string_converter<T>().to_str(ctx, x); } using ret_type = std::string; using arg_type = T; }; // Function wrapper // Example: one parameter, one return -template <typename Class, typename FuncT, FuncT fn, typename rv_conv, typename arg1_conv> struct function_wrapper +template <typename Class, typename FuncT, FuncT fn, typename rv_conv, typename arg1_conv> struct fn_wrapper { - using class_type = ContextualWrapper<Class>; + using class_type = typename WrapIfNotContext<Class>::maybe_wrapped_t; using conv_result_type = typename rv_conv::ret_type; using conv_arg1_type = typename arg1_conv::arg_type; static conv_result_type wrapped_fn(class_type &cls, conv_arg1_type arg1) { - return rv_conv()(cls.ctx, cls.base.*fn(arg1_conv()(cls.ctx, arg1))); + return rv_conv()(get_base(cls).ctx, get_base(cls).*fn(arg1_conv()(get_ctx(cls), arg1))); } + + template <typename WrapCls> static void def_wrap(WrapCls cls_, const char *name) { cls_.def(name, wrapped_fn); } }; } // namespace PythonConversion |