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default/fallback configuration for the collection binding

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when setting up a binding to child elements within a STL collection,
all the variable elements are preconfigured to a more or less
disabled and inactive state.
This commit is contained in:
Fischlurch 2016-03-19 01:24:11 +01:00
parent c909a67388
commit b4fb767109
1 changed files with 29 additions and 16 deletions
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45
src/lib/diff/tree-mutator-collection-binding.hpp
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@ -58,6 +58,7 @@
using lib::meta::Strip;
using lib::diff::GenNode;
/**
* Attach to collection: Concrete binding setup.
@ -371,6 +372,18 @@
}
};
/**
* starting point for configuration of a binding to STL container.
* When using the "nested DSL" to setup a binding to child elements
* managed within a STL collection, all the variable and flexible
* aspects of the binding are preconfigured to a more or less
* disabled and inactive state. The resulting binding layer
* offers just minimal functionality. Typically you'd use
* the created (\ref CollectionBindingBuilder) to replace
* those defaults with lambdas tied into the actual
* implementation of the target data structure.
*/
template<class COLL>
struct _DefaultBinding
{
@ -378,41 +391,41 @@
using Elm = typename Coll::value_type;
static bool
disable_selector (GenNode const& spec)
default_contentMatch (GenNode const& spec, Elm const& elm)
{
UNIMPLEMENTED ("dont discriminate by default");
}
static bool
default_contantMatch (Elm const& elm)
{
UNIMPLEMENTED ("fallback matcher");
return spec.matches(elm);
}
static Elm
default_construct_from_payload (GenNode const& spec)
{
UNIMPLEMENTED ("default construct from spec payload");
return spec.data.get<Elm>();
}
static bool
disable_assignment (GenNode const& spec)
disable_selector (GenNode const&)
{
UNIMPLEMENTED ("disabled assignment");
return false;
}
static bool
disable_childMutation (GenNode const& spec, TreeMutator::MutatorBuffer targetBuff)
disable_assignment (GenNode const&)
{
UNIMPLEMENTED ("inactive mutator builder");
return false;
}
static bool
disable_childMutation (GenNode const&, TreeMutator::MutatorBuffer)
{
return false;
}
using FallbackBindingConfiguration
= CollectionBindingBuilder<Coll
,decltype(disable_selector)
,decltype(default_contantMatch)
,decltype(default_contentMatch)
,decltype(default_construct_from_payload)
,decltype(disable_selector)
,decltype(disable_assignment)
,decltype(disable_childMutation)
>;
@ -422,7 +435,7 @@
{
return { coll
, disable_selector
, default_contantMatch
, default_contentMatch
, default_construct_from_payload
, disable_assignment
, disable_childMutation