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compiler, runtime, common: Support (in)out Parameters

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When a function is called, if there is an (in)out parameter,
make sure that updated values are propogated to the calling
function.

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
This commit is contained in:
Will Hawkins
2026-04-16 06:58:45 -04:00
parent 94086c8e17
commit 82c125e4d1
14 changed files with 322 additions and 139 deletions
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Sources/P4Runtime/Statements.swift
+4 -4
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@@ -41,7 +41,7 @@ extension BlockStatement: EvaluatableStatement {
extension VariableDeclarationStatement: EvaluatableStatement {
public func evaluate(execution: ProgramExecution) -> (ControlFlow, ProgramExecution) {
guard case .Ok(let initial_value) = self.initializer.evaluate(execution: execution) else {
guard case (.Ok(let initial_value), let execution) = self.initializer.evaluate(execution: execution) else {
return (
ControlFlow.Error,
execution.setError(error: Error(withMessage: "Could not evaluate \(self.initializer)"))
@@ -55,7 +55,7 @@ extension VariableDeclarationStatement: EvaluatableStatement {
extension ConditionalStatement: EvaluatableStatement {
public func evaluate(execution: ProgramExecution) -> (ControlFlow, ProgramExecution) {
guard case .Ok(let evaluated_condition) = self.condition.evaluate(execution: execution) else {
guard case (.Ok(let evaluated_condition), let execution) = self.condition.evaluate(execution: execution) else {
return (
ControlFlow.Error,
execution.setError(error: Error(withMessage: "Could not evaluate \(self.condition)"))
@@ -108,8 +108,8 @@ extension ExpressionStatement: EvaluatableStatement {
extension ReturnStatement: EvaluatableStatement {
public func evaluate(execution: ProgramExecution) -> (ControlFlow, ProgramExecution) {
return switch self.value.evaluate(execution: execution) {
case .Ok(let v): (ControlFlow.Return(v), execution)
case .Error(let e): (ControlFlow.Error, execution.setError(error: e))
case (.Ok(let v), let execution): (ControlFlow.Return(v), execution)
case (.Error(let e), let execution): (ControlFlow.Error, execution.setError(error: e))
}
}
}