Implement if statements

examples/if_else.kit

@@ -0,0 +1,23 @@
+include "stdio.h";
+
+function main(): Int {
+    var x: Int = 10;
+    if (x == 10) {
+        printf("x is 10\n");
+    } else {
+        printf("x is not 10\n");
+    }
+
+    if (x > 10) {
+        printf("x is greater than 10\n");
+    } else {
+        printf("x is not greater than 10\n");
+    }
+
+    var y: Int = if x == 10 then 5 else 0;
+    if (y == 5) {
+        printf("y is 5\n");
+    }
+
+    return 0;
+}

examples/if_else.kit.expected

@@ -0,0 +1,3 @@
+x is 10
+x is not greater than 10
+y is 5

examples/precedence.kit

@@ -0,0 +1,7 @@
+include "stdbool.h";
+include "stdio.h";
+
+function main() {
+    var x: Int = 1 + 2 * 3 == 7 || false;
+    printf("%d\n", x);
+}

examples/precedence.kit.expected

@@ -0,0 +1 @@
+1

kitc/tests/examples.rs

@@ -104,3 +104,13 @@ fn test_bitwise_not() -> Result<(), Box<dyn std::error::Error>> {
 fn test_input() -> Result<(), Box<dyn std::error::Error>> {
     run_example_test("input", Some("42\n"))
 }
+
+#[test]
+fn test_if_else() -> Result<(), Box<dyn std::error::Error>> {
+    run_example_test("if_else", None)
+}
+
+#[test]
+fn test_precedence() -> Result<(), Box<dyn std::error::Error>> {
+    run_example_test("precedence", None)
+}

kitlang/src/codegen/compiler.rs

@@ -32,13 +32,6 @@ impl FromStr for Toolchain {
     }
 }
 
-pub enum Optimizations {
-    // Should be handled by the compiler itself
-    Simple = 1,
-    Medium = 2,
-    Aggressive = 3,
-}
-
 // TODO: Fix this doctest from failing because of imports
 /// Convert a path's file stem to a lowercase `String`.
 ///