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cmDefinitions: Centralize knowledge of iterator type.

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Currently we process a list of definitions, but that will change.
This commit is contained in:
Stephen Kelly 2015-05-16 05:33:25 +02:00
parent 7872201bf6
commit 98c5c90361
2 changed files with 19 additions and 26 deletions
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33
Source/cmDefinitions.cxx
View File

@ -18,32 +18,29 @@ cmDefinitions::Def cmDefinitions::NoDef;
//----------------------------------------------------------------------------
cmDefinitions::Def const& cmDefinitions::GetInternal(
const std::string& key,
std::list<cmDefinitions>::reverse_iterator rbegin,
std::list<cmDefinitions>::reverse_iterator rend)
const std::string& key, StackIter begin, StackIter end)
{
assert(rbegin != rend);
MapType::const_iterator i = rbegin->Map.find(key);
if (i != rbegin->Map.end())
assert(begin != end);
MapType::const_iterator i = begin->Map.find(key);
if (i != begin->Map.end())
{
return i->second;
}
std::list<cmDefinitions>::reverse_iterator rit = rbegin;
++rit;
if (rit == rend)
StackIter it = begin;
++it;
if (it == end)
{
return cmDefinitions::NoDef;
}
Def const& def = cmDefinitions::GetInternal(key, rit, rend);
return rbegin->Map.insert(MapType::value_type(key, def)).first->second;
Def const& def = cmDefinitions::GetInternal(key, it, end);
return begin->Map.insert(MapType::value_type(key, def)).first->second;
}
//----------------------------------------------------------------------------
const char* cmDefinitions::Get(const std::string& key,
std::list<cmDefinitions>::reverse_iterator rbegin,
std::list<cmDefinitions>::reverse_iterator rend)
StackIter begin, StackIter end)
{
Def const& def = cmDefinitions::GetInternal(key, rbegin, rend);
Def const& def = cmDefinitions::GetInternal(key, begin, end);
return def.Exists? def.c_str() : 0;
}
@ -77,14 +74,12 @@ std::vector<std::string> cmDefinitions::LocalKeys() const
}
//----------------------------------------------------------------------------
cmDefinitions cmDefinitions::MakeClosure(
std::list<cmDefinitions>::const_reverse_iterator rbegin,
std::list<cmDefinitions>::const_reverse_iterator rend)
cmDefinitions cmDefinitions::MakeClosure(StackConstIter begin,
StackConstIter end)
{
cmDefinitions closure;
std::set<std::string> undefined;
for (std::list<cmDefinitions>::const_reverse_iterator it = rbegin;
it != rend; ++it)
for (StackConstIter it = begin; it != end; ++it)
{
// Consider local definitions.
for(MapType::const_iterator mi = it->Map.begin();

12
Source/cmDefinitions.h
View File

@ -28,12 +28,13 @@
*/
class cmDefinitions
{
typedef std::list<cmDefinitions>::reverse_iterator StackIter;
typedef std::list<cmDefinitions>::const_reverse_iterator StackConstIter;
public:
/** Get the value associated with a key; null if none.
Store the result locally if it came from a parent. */
static const char* Get(const std::string& key,
std::list<cmDefinitions>::reverse_iterator rbegin,
std::list<cmDefinitions>::reverse_iterator rend);
StackIter begin, StackIter end);
/** Set (or unset if null) a value associated with a key. */
void Set(const std::string& key, const char* value);
@ -46,9 +47,7 @@ public:
std::vector<std::string>
ClosureKeys(std::set<std::string>& bound) const;
static cmDefinitions MakeClosure(
std::list<cmDefinitions>::const_reverse_iterator rbegin,
std::list<cmDefinitions>::const_reverse_iterator rend);
static cmDefinitions MakeClosure(StackConstIter begin, StackConstIter end);
private:
// String with existence boolean.
@ -74,8 +73,7 @@ private:
MapType Map;
static Def const& GetInternal(const std::string& key,
std::list<cmDefinitions>::reverse_iterator rbegin,
std::list<cmDefinitions>::reverse_iterator rend);
StackIter begin, StackIter end);
};
#endif