Changeset 41634098

Timestamp:

May 25, 2017, 4:52:09 PM (7 years ago)

Author:

Aaron Moss <a3moss@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, resolv-new, with_gc

Children:

ace67c8

Parents:

1eeab94

Message:

Added white paper on user-defined conversions based on resolver design doc

Location:

doc

Files:

• proposals/user_conversions.md (added)
• working/resolver_design.md (modified) (1 diff)

doc/working/resolver_design.md

@@ -41 +41 @@
 ensure that they are two-arg functions (this restriction may be valuable 
 regardless).
+
+Regardless of syntax, there should be a type assertion that expresses `From` 
+is convertable to `To`. 
+If user-defined conversions are not added to the language, 
+`void ?{} ( To*, From )` may be a suitable representation, relying on 
+conversions on the argument types to account for transitivity. 
+On the other hand, `To*` should perhaps match its target type exactly, so 
+another assertion syntax specific to conversions may be required, e.g. 
+`From -> To`.
 
 ### Constructor Idiom ###