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compiler, runtime, common, documentation: Refactor Type System

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The type system (and the value system) now include attributes
for each type (things like direction, const-ness).

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
This commit is contained in:
Will Hawkins
2026-04-13 23:53:31 -04:00
parent 35b2537754
commit 94086c8e17
34 changed files with 690 additions and 552 deletions
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Sources/Common/Protocols.swift
+11 -17
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@@ -21,7 +21,7 @@ public protocol EvaluatableExpression {
/// - execution: The execution context in which to evaluate the expression
/// - Returns: The value of expression
func evaluate(execution: ProgramExecution) -> Result<P4Value>
func type() -> any P4Type
func type() -> P4Type
}
public protocol EvaluatableStatement {
@@ -34,24 +34,18 @@ public protocol EvaluatableStatement {
func evaluate(execution: ProgramExecution) -> (ControlFlow, ProgramExecution)
}
public protocol P4Type: CustomStringConvertible {
func eq(rhs: any P4Type) -> Bool
func def() -> P4Value
public protocol P4DataType: CustomStringConvertible {
func eq(rhs: any P4DataType) -> Bool
func def() -> P4DataValue
}
public protocol P4Value: EvaluatableExpression, CustomStringConvertible {
func type() -> any P4Type
func eq(rhs: P4Value) -> Bool
func lt(rhs: P4Value) -> Bool
func lte(rhs: P4Value) -> Bool
func gt(rhs: P4Value) -> Bool
func gte(rhs: P4Value) -> Bool
}
extension P4Value {
public func evaluate(execution: ProgramExecution) -> Result<P4Value> {
return Result.Ok(self)
}
public protocol P4DataValue: CustomStringConvertible {
func type() -> any P4DataType
func eq(rhs: P4DataValue) -> Bool
func lt(rhs: P4DataValue) -> Bool
func lte(rhs: P4DataValue) -> Bool
func gt(rhs: P4DataValue) -> Bool
func gte(rhs: P4DataValue) -> Bool
}
public protocol EvaluatableLValueExpression: EvaluatableExpression {