Comments (7)
There are contexts where env
makes sense but a return type does not. I'm not why trying to push these together is useful?
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Just wanted to mention another motivation for this that I discovered.
I have found when working on the templating extension that it really is needed in many cases to include a 'resolved' type as a parameter to custom type productions (the refId hack only gets you so far, especially when you are forwarding to something that is injecting globalDecls that are based on something in a header file.) Because of this, we sometimes want to be able to write 'factory' functions to generate types, parameterized by the environment instead of a resolved type. These work by constructing the coresponding type expression, and then decorating it to find the type.
In order to do that decoration, we need to supply returnType as well as the env. We could just set returnType to nothing() since a TypeName that uses returnType somehow to determine its typerep is only possible in some really bizarre ASTs... but to do things right, returnType should be another parameter to these factory productions.
Then another extension writer who wants to use mkVectorType for some reason needs to pass in the current return type, which is extremely non-intuitive.
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Hmm, as a side-note, I just realised that we already do have this information in the environment, via currentFunctionItem
in the MiscItem
namespace. Is this item actually being used for anything? This is never looked up in the host, and I can't seem to find or think of any extension that would utilize this.
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Related Issues (20)
- Pragmas in ableC HOT 1
- Flow error incoming HOT 1
- Lifting mechanism causes difficulties with avoiding redecoration
- Type Qualifiers don't work with typedef types HOT 2
- Type Qualifier modifiers problem HOT 5
- Function scope lifting and nested functions HOT 1
- Error with function scope lifting
- Problem with struct predeclaration and refId HOT 2
- bogusLoc to structDecl results in invalid name
- Missing Errors on break and continue HOT 2
- Merge returnType, breakValid, continueValid into one attribute HOT 2
- Documentation for testing
- Allow __attribute__ in more places
- Driver doesn't resemble cc HOT 2
- Remove uses of autocopy from ableC HOT 2
- Octal literals in `case`s not supported? HOT 1
- Grammar railroad diagram
- Refactor operator overloading to use new tree sharing features
- Remove decExpr and friends HOT 1
- Remove "injectable" operator productions HOT 1
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