From c0767bc3861d3afbb647f54b0a6297de139ce339 Mon Sep 17 00:00:00 2001
From: Brandon Dyck <brandon@dyck.us>
Date: Wed, 28 Jun 2023 17:25:28 -0600
Subject: [PATCH] Rearrange control expression parsing

---
 Parser.cs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Parser.cs b/Parser.cs
index c9f0098..d4e2022 100644
--- a/Parser.cs
+++ b/Parser.cs
@@ -163,6 +163,25 @@ class Parser
 		return ifExpr();
 	}
 
+	private Expr control()
+	{
+		switch (peek().type)
+		{
+			case TokenType.If:
+				advance();
+				Expr condition = expression();
+				consume(TokenType.Then, "Expect 'then' after condition.");
+				Expr thenCase = expression();
+				consume(TokenType.Else, "Expect 'else' after 'then' case.");
+				Expr elseCase = expression();
+				return new If { Condition = condition, Then = thenCase, Else = elseCase };
+			case TokenType.When:
+				throw new NotImplementedException();
+		}
+
+		return primary();
+	}
+
 	private Expr ifExpr()
 	{
 		if (match(TokenType.If))