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make unions with type aliases more usable (#5019)

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Some generic C++ and Rust code is not generated when unions use type
aliases because of potential ambiguity. Actually check for this
ambiguity and only disable offending code only if it is found.
This commit is contained in:
Frank Benkstein
2018-11-01 20:51:25 +01:00
committed by Wouter van Oortmerssen
parent 4c3b6c247d
commit 91fe9ba93f
33 changed files with 1773 additions and 37 deletions
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5
tests/monster_test.fbs
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@@ -18,6 +18,9 @@ enum Color:byte (bit_flags) { Red = 0, Green, Blue = 3, }
union Any { Monster, TestSimpleTableWithEnum, MyGame.Example2.Monster }
union AnyUniqueAliases { M: Monster, T: TestSimpleTableWithEnum, M2: MyGame.Example2.Monster }
union AnyAmbiguousAliases { M1: Monster, M2: Monster, M3: Monster }
struct Test { a:short; b:byte; }
table TestSimpleTableWithEnum (csharp_partial, private) {
@@ -94,6 +97,8 @@ table Monster {
vector_of_co_owning_references:[ulong](id:40, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"default_ptr_type", cpp_ptr_type_get:".get()"); //was shared_ptr
non_owning_reference:ulong(id:41, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"naked", cpp_ptr_type_get:""); //was weak_ptr
vector_of_non_owning_references:[ulong](id:42, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"naked", cpp_ptr_type_get:""); //was weak_ptr
any_unique:AnyUniqueAliases(id:44);
any_ambiguous:AnyAmbiguousAliases (id:46);
}
table TypeAliases {