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parsing template parameters

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This commit is contained in:
Lorenzo Caminiti
2014-12-16 11:40:57 -08:00
parent dba2a745f9
commit c76889167f
3 changed files with 25 additions and 38 deletions
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18
include/boost/contract/ext_/preprocessor/paren/eat.hpp
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@@ -1,18 +0,0 @@
#ifndef BOOST_CONTRACT_EXT_PP_PAREN_EAT_HPP_
#define BOOST_CONTRACT_EXT_PP_PAREN_EAT_HPP_
// PRIVATE //
// IMPLEMENTATION: Must expand to nothing (so to "eat" the first paren).
#define BOOST_CONTRACT_EXT_PP_PAREN_EAT_(...)
// PUBLIC //
// Precondition: tokens == `(...[, ...]*) ...[, ...]*`.
// Expand to trailing ...[, ...]* above, "eating" parenthesized tokens in front.
#define BOOST_CONTRACT_EXT_PP_PAREN_EAT(tokens) \
BOOST_CONTRACT_EXT_PP_PAREN_EAT_ tokens
#endif // #include guard

20
include/boost/contract/ext_/preprocessor/paren/first.hpp
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@@ -1,20 +0,0 @@
#ifndef BOOST_CONTRACT_EXT_PP_PAREN_FIRST_HPP_
#define BOOST_CONTRACT_EXT_PP_PAREN_FIRST_HPP_
#include <boost/preprocessor/tuple/elem.hpp>
// PRIVATE //
#define BOOST_CONTRACT_EXT_PP_PAREN_FIRST_SPLIT_(...) (__VA_ARGS__) ,
// PUBLIC //
// Precondition: tokens == `(...[, ...]*) ...[, ...]*`.
// Expand to `(...[, ...]*)` in front above (discarding any trailing tokens).
#define BOOST_CONTRACT_EXT_PP_PAREN_FIRST(tokens) \
BOOST_PP_TUPLE_ELEM(2, 0, \
( BOOST_CONTRACT_EXT_PP_PAREN_FIRST_SPLIT_ tokens ))
#endif // #include guard

25
include/boost/contract/ext_/preprocessor/paren/front.hpp Normal file
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#ifndef BOOST_CONTRACT_EXT_PP_PAREN_FRONT_HPP_
#define BOOST_CONTRACT_EXT_PP_PAREN_FRONT_HPP_
/* PRIVATE */
#define BOOST_CONTRACT_EXT_PP_PAREN_FRONT_SPLIT_(...) (__VA_ARGS__) ,
#define BOOST_CONTRACT_EXT_PP_PAREN_FRONT_PAIR_FIRST_(first, second) first
// NOTE: Using `BOOST_PP_TUPLE_ELEM(2, 0, pair)` confuses MSVC here.
#define BOOST_CONTRACT_EXT_PP_PAREN_FRONT_OO_(pair) \
BOOST_CONTRACT_EXT_PP_PAREN_FRONT_PAIR_FIRST_ pair
/* PUBLIC */
// Precondition: tokens == `(...[, ...]*) ...[, ...]*`.
// Expand to `(...[, ...]*)` in front above (discarding any trailing tokens).
// NOTE: To get the trailing `...[, ...]*` use `BOOST_PP_TUPLE_EAT(0) tokens`.
#define BOOST_CONTRACT_EXT_PP_PAREN_FRONT(tokens) \
BOOST_CONTRACT_EXT_PP_PAREN_FRONT_OO_(( \
BOOST_CONTRACT_EXT_PP_PAREN_FRONT_SPLIT_ tokens))
#endif // #include guard