Initial Commit

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>

Tests/p4lmTests/p4lmTests.swift

@@ -0,0 +1,35 @@
+import Testing
+import TreeSitter
+import SwiftTreeSitter
+import TreeSitterP4
+import Foundation
+
+@testable import p4lm
+
+@Test func example() async throws {
+    let simple_parser_declaration = """
+        parser simple() {
+           state testing {}
+        }
+        """
+
+    guard let tree = p4lm.parse(simple_parser_declaration) else {
+        assert(false, "Could not parse the simple parser declaration.")
+    }
+
+    let p4lang = Language(tree_sitter_p4())
+    let query = try! SwiftTreeSitter.Query(language: p4lang, data: String("(parserDeclaration (parserTypeDeclaration (parser) parser_name: (identifier) @parser-name))").data(using: String.Encoding.utf8)!)
+
+    let qr = query.execute(in: tree)
+
+    // TODO: Figure out how to actually determine the number of matches.
+
+    guard let parser_declaration = qr.next() else {
+        assert(false, "Could not parse the simple parser declaration (No parser declaration).")
+    }
+
+    let parser_name_capture = parser_declaration.captures(named: "parser-name")[0]
+
+    #expect(parser_name_capture.node.text == Optional<String>.some("simple"))
+
+}