[fine] More test more!

fine/src/semantics.rs

@@ -653,6 +653,7 @@ impl<'a> Semantics<'a> {
             TreeKind::LetStatement => Some(Type::Nothing),
             TreeKind::ReturnStatement => Some(Type::Unreachable),
             TreeKind::ExpressionStatement => self.type_of_expression_statement(tree),
+            TreeKind::IfStatement => self.type_of_if_statement(tree),
             TreeKind::Identifier => self.type_of_identifier(t, tree),
 
             TreeKind::FunctionDecl => self.type_of_function_decl(tree),
@@ -1020,6 +1021,10 @@ impl<'a> Semantics<'a> {
         Some(Type::Function(parameter_types, return_type))
     }
 
+    fn type_of_if_statement(&self, tree: &Tree) -> Option<Type> {
+        Some(self.type_of(tree.nth_tree(0)?))
+    }
+
     pub fn dump_compiler_state(&self, tr: Option<TreeRef>) {
         eprintln!("Parsed the tree as:");
         eprintln!("\n{}", self.syntax_tree.dump(true));

fine/tests/expression/conditional.fine

@@ -1,51 +1,59 @@
-if true { "discarded"; 23 } else { 45 }
+fun test() {
+    if true { "discarded"; 23 } else { 45 }
+}
 
 // @no-errors
 // Here come some type probes!
 // (type of the condition)
-// @type: 3 bool
+// @type: 20 bool
 //
 // (the discarded expression)
-// @type: 10 string
+// @type: 27 string
 //
 // (the "then" clause)
-// @type: 23 f64
-// @type: 26 f64
+// @type: 40 f64
+// @type: 43 f64
 //
 // (the "else" clause)
-// @type: 35 f64
-// @type: 38 f64
-//
-// (the overall expression)
-// @type: 0 f64
+// @type: 52 f64
+// @type: 55 f64
 //
 // @concrete:
 // | File
-// |   IfStatement
-// |     ConditionalExpression
-// |       If:'"if"'
-// |       LiteralExpression
-// |         True:'"true"'
-// |       Block
-// |         LeftBrace:'"{"'
-// |         ExpressionStatement
+// |   FunctionDecl
+// |     Fun:'"fun"'
+// |     Identifier:'"test"'
+// |     ParamList
+// |       LeftParen:'"("'
+// |       RightParen:'")"'
+// |     Block
+// |       LeftBrace:'"{"'
+// |       IfStatement
+// |         ConditionalExpression
+// |           If:'"if"'
 // |           LiteralExpression
-// |             String:'"\"discarded\""'
-// |           Semicolon:'";"'
-// |         ExpressionStatement
-// |           LiteralExpression
-// |             Number:'"23"'
-// |         RightBrace:'"}"'
-// |       Else:'"else"'
-// |       Block
-// |         LeftBrace:'"{"'
-// |         ExpressionStatement
-// |           LiteralExpression
-// |             Number:'"45"'
-// |         RightBrace:'"}"'
+// |             True:'"true"'
+// |           Block
+// |             LeftBrace:'"{"'
+// |             ExpressionStatement
+// |               LiteralExpression
+// |                 String:'"\"discarded\""'
+// |               Semicolon:'";"'
+// |             ExpressionStatement
+// |               LiteralExpression
+// |                 Number:'"23"'
+// |             RightBrace:'"}"'
+// |           Else:'"else"'
+// |           Block
+// |             LeftBrace:'"{"'
+// |             ExpressionStatement
+// |               LiteralExpression
+// |                 Number:'"45"'
+// |             RightBrace:'"}"'
+// |       RightBrace:'"}"'
 //
 // @compiles-to:
-// | function << module >> (0 args, 0 locals):
+// | function test (0 args, 0 locals):
 // |   strings (1):
 // |     0: "discarded"
 // |   code (8):
@@ -57,4 +65,10 @@ if true { "discarded"; 23 } else { 45 }
 // |     5: Jump(7)
 // |     6: PushFloat(45.0)
 // |     7: Return
+// | function << module >> (0 args, 0 locals):
+// |   strings (0):
+// |   code (2):
+// |     0: PushNothing
+// |     1: Return
 // |
+// @eval: Float(23.0)