...

example/c/bindings.nub

@@ -1,2 +1,2 @@
-extern func puts(str: string);
-extern func printf(fmt: string, ...args: any);
+extern func puts(str: string)
+extern func printf(fmt: string, ...args: any)

example/program.nub

@@ -1,10 +1,11 @@
-import c;
+import c
 
 global func main(argc: i64, argv: i64) {
-    printf("args: %d, starts at %p\n", argc, argv);
-    test(12.1);
+    printf("args: %d, starts at %p\n", argc, argv)
+    test(12.1)
+    return 23
 }
 
 func test(a: f64) {
-    printf("%f\n", a);
+    printf("%f\n", a)
 }

src/compiler/Nub.Lang/Backend/Generator.cs

@@ -229,7 +229,7 @@ public class Generator
         {
             _builder.Append($"{FQT(node.ReturnType.Value)} ");
         }
-        else
+        else if (!node.ReturnType.HasValue && node.Name == "main")
         {
             _builder.Append("l ");
         }
@@ -237,18 +237,7 @@ public class Generator
         _builder.Append('$');
         _builder.Append(node.Name);
 
-        var parameterStrings = new List<string>();
-        foreach (var parameter in node.Parameters)
-        {
-            if (parameter.Variadic)
-            {
-                parameterStrings.Add("...");
-            }
-            else
-            {
-                parameterStrings.Add($"{FQT(parameter.Type)} %{parameter.Name}");
-            }
-        }
+        var parameterStrings = node.Parameters.Select(parameter => parameter.Variadic ? "..." : $"{FQT(parameter.Type)} %{parameter.Name}");
 
         _builder.AppendLine($"({string.Join(", ", parameterStrings)}) {{");
         _builder.AppendLine("@start");
@@ -285,9 +274,17 @@ public class Generator
         }
 
         GenerateBlock(node.Body);
-        if (!node.ReturnType.HasValue)
+
+        if (node.Body.Statements.Last() is not ReturnNode)
         {
-            _builder.AppendLine("    ret 0");
+            if (!node.ReturnType.HasValue && node.Name == "main")
+            {
+                _builder.AppendLine("    ret 0");
+            }
+            else if (!node.ReturnType.HasValue)
+            {
+                _builder.AppendLine("    ret");
+            }
         }
 
         _builder.AppendLine("}");
@@ -758,8 +755,7 @@ public class Generator
             }
         }
 
-        throw new NotSupportedException(
-            $"Binary operator {binaryExpression.Operator} for types left: {binaryExpression.Left.Type}, right: {binaryExpression.Right.Type} not supported");
+        throw new NotSupportedException($"Binary operator {binaryExpression.Operator} for types left: {binaryExpression.Left.Type}, right: {binaryExpression.Right.Type} not supported");
     }
 
     private string GenerateIdentifier(IdentifierNode identifier)

src/compiler/Nub.Lang/Frontend/Parsing/Parser.cs

@@ -21,7 +21,6 @@ public class Parser
             if (TryExpectSymbol(Symbol.Import))
             {
                 var name = ExpectIdentifier();
-                TryExpectSymbol(Symbol.Semicolon);
                 imports.Add(name.Value);
             }
             else
@@ -77,7 +76,6 @@ public class Parser
             {
                 throw new Exception($"Modifiers: {string.Join(", ", modifiers)} is not valid for an extern function");
             }
-            ExpectSymbol(Symbol.Semicolon);
             return new ExternFuncDefinitionNode(name.Value, parameters, returnType);
         }
         
@@ -112,8 +110,6 @@ public class Parser
                 variableValue = ParseExpression();
             }
 
-            ExpectSymbol(Symbol.Semicolon);
-
             variables.Add(new StructField(variableName, variableType, variableValue));
         }
 
@@ -156,14 +152,11 @@ public class Parser
                             TryExpectSymbol(Symbol.Comma);
                         }
 
-                        ExpectSymbol(Symbol.Semicolon);
-
                         return new FuncCallStatementNode(new FuncCall(identifier.Value, parameters));
                     }
                     case Symbol.Assign:
                     {
                         var value = ParseExpression();
-                        ExpectSymbol(Symbol.Semicolon);
                         return new VariableAssignmentNode(identifier.Value, value);
                     }
                     default:
@@ -179,8 +172,8 @@ public class Parser
                     Symbol.Return => ParseReturn(),
                     Symbol.If => ParseIf(),
                     Symbol.While => ParseWhile(),
-                    Symbol.Break => ParseBreak(),
-                    Symbol.Continue => ParseContinue(),
+                    Symbol.Break => new BreakNode(),
+                    Symbol.Continue => new ContinueNode(),
                     _ => throw new Exception($"Unexpected symbol {symbol.Symbol}")
                 };
             }
@@ -197,7 +190,6 @@ public class Parser
         if (!TryExpectSymbol(Symbol.Semicolon))
         {
             value = ParseExpression();
-            ExpectSymbol(Symbol.Semicolon);
         }
 
         return new ReturnNode(value);
@@ -226,18 +218,6 @@ public class Parser
         return new WhileNode(condition, body);
     }
 
-    private BreakNode ParseBreak()
-    {
-        ExpectSymbol(Symbol.Semicolon);
-        return new BreakNode();
-    }
-
-    private ContinueNode ParseContinue()
-    {
-        ExpectSymbol(Symbol.Semicolon);
-        return new ContinueNode();
-    }
-
     private ExpressionNode ParseExpression(int precedence = 0)
     {
         var left = ParsePrimaryExpression();
@@ -349,7 +329,6 @@ public class Parser
                             var name = ExpectIdentifier().Value;
                             ExpectSymbol(Symbol.Assign);
                             var value = ParseExpression();
-                            TryExpectSymbol(Symbol.Semicolon);
                             initializers.Add(name, value);
                         }