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Added Value::findType with String key

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This adds a convenience function to return a member if it has a specific
json type. All isType values are supported.
This commit is contained in:
Jake Stinson
2024-10-13 11:49:15 +01:00
parent bd25fc5ea0
commit 68729c36ea
3 changed files with 147 additions and 0 deletions
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23
include/json/value.h
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@@ -516,6 +516,29 @@ public:
/// Most general and efficient version of isMember()const, get()const,
/// and operator[]const
Value const* find(const String& key) const;
/// Calls find and only returns a valid pointer if the type is found
template <typename T, bool (T::*TMemFn)() const>
Value const* findValue(const String& key) const {
Value const* found = find(key);
if (!found || !(found->*TMemFn)())
return nullptr;
return found;
}
Value const* findNull(const String& key) const;
Value const* findBool(const String& key) const;
Value const* findInt(const String& key) const;
Value const* findInt64(const String& key) const;
Value const* findUInt(const String& key) const;
Value const* findUInt64(const String& key) const;
Value const* findIntegral(const String& key) const;
Value const* findDouble(const String& key) const;
Value const* findNumeric(const String& key) const;
Value const* findString(const String& key) const;
Value const* findArray(const String& key) const;
Value const* findObject(const String& key) const;
/// Most general and efficient version of object-mutators.
/// \note As stated elsewhere, behavior is undefined if (end-begin) >= 2^30
/// \return non-zero, but JSON_ASSERT if this is neither object nor nullValue.