Add `cond` conditionals

1 files changed, 35 insertions, 33 deletions

diff --git a/tests/conditionals.bad b/tests/conditionals.bad
index 44467a8..856ac8a 100644
--- a/tests/conditionals.bad
+++ b/tests/conditionals.bad
@@ -1,36 +1,30 @@
-; ; Basic if expressions.
-; if true "hello"
-
-; ; These can produce values and the result bound to a name.
-; let a = if (2 + 2 >= 4) 42
-
-; ; We support a single if expression.
-; let b = if 0xff == 255 "hello" else "world"
-
-; ; ... but these can compound on each other
-; if 1 < 2        6
-; else if 1 > 2   7
-; else            8
-
-; ; A block is an expression, and if raise the scope level regardless if a block
-; ; is used or not.
-; if true != false {
-;     let a = "yo"
-; }
-
-; ; Match cases should only apply to literal values, for example `case 1 + 2`
-; ; isn't allowed. They should generally convert to a lookup table.
-; match a = {
-;     case 8 = "hello"
-;     case 9 = "world"
-;     else   = "what"
-; }
-
-; cond {
-;     case a == b = "hello"
-;     case a != c = "world"
-;     else        = "what"
-; }
+; Basic if expressions.
+if true "hello"
+
+; These can produce values and the result bound to a name.
+let a = if (2 + 2 >= 4) 42
+
+; We support a single if expression.
+let b = if 0xff == 255 "hello" else "world"
+
+; ... but these can compound on each other
+if 1 < 2        6
+else if 1 > 2   7
+else            8
+
+; A block is an expression, and if raise the scope level regardless if a block
+; is used or not.
+if true != false {
+    let a = "yo"
+}
+
+; Match cases should only apply to literal values, for example `case 1 + 2`
+; isn't allowed. They should generally convert to a lookup table.
+match a = {
+    case 8 = "hello"
+    case 9 = "world"
+    else   = "what"
+}
 
 ; Enums are integers with values that increase automatically or that can be set
 ; with a constexpr.
@@ -48,3 +42,11 @@ match a = {
     case node_add = "subbing something..."
     else          = "default case"
 }
+
+; Conditional `cond` statements are syntactic sugar for a chain of if-else
+; statements.
+let msg:str = cond {
+    case a == b = "hello"
+    case a != c = "world"
+    else        = "what"
+}