hawkinsw/gp4
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

compiler, runtime, common, testing: Support Directions on Parameters and Attributed Types

Browse Source 
Add support for directions on parameters and attributed types. The
latter is necessary to support the former, but is not limited to
the direction use case. An attributed type is a P4 type with attributes
(like its direction, whether it is read only, etc.) Other attributes
will be added in the future.

Changes necessary to support attributed types include:
1. Global instances tracked during compilation are not attributed
types and not simply types.
2. (future) Type checking will have to make sure that a types
attributes do not affect type compatibility.

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
This commit is contained in:
Will Hawkins
2026-04-13 06:25:08 -04:00
parent 9669a99dfc
commit 35b2537754
17 changed files with 209 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Sources/P4Compiler/Expression.swift
+2 -2
View File
@@ -43,13 +43,13 @@ extension TypedIdentifier: CompilableExpression {
node: node, type: "identifier")
guard
case Result.Ok(let type) = context.instances.lookup(
case Result.Ok(let attributed_type) = context.instances.lookup(
identifier: Common.Identifier(name: node.text!))
else {
return .Error(ErrorOnNode(node: node, withError: "Cannot find \(node.text!) in scope"))
}
return .Ok(TypedIdentifier(name: node.text!, withType: type))
return .Ok(TypedIdentifier(name: node.text!, withType: attributed_type.type))
}
}