main: call gcc to make out executable

.gitignore

@@ -2,3 +2,4 @@ zig-cache/
 *.bc
 *.ll
 *.o
+*.out

examples/hello.ry

@@ -29,8 +29,6 @@ fn add(a: i32, b: i32) i32 {
     return a + b;
 }
 
-// type is void by default
-//fn main() {
-//    print("piss\n");
-//    // print("2 + 2 = %d\n", add(1, 2));
-//}
+fn main() i32 {
+    return 1;
+}

src/entry.c

@@ -0,0 +1,3 @@
+int main(void) {
+    __rayoko_main();
+}

src/main.zig

@@ -59,6 +59,13 @@ pub fn run(allocator: *std.mem.Allocator, slice: []const u8) !Result {
     var cgen = codegen.Codegen.init(allocator, &ctx);
     try cgen.gen(root);
 
+    var child = try std.ChildProcess.init(
+        [_][]const u8{ "gcc", "src/entry.c", "outpath.o", "-o", "a.out" },
+        allocator,
+    );
+    try child.spawn();
+    _ = try child.wait();
+
     return Result.Ok;
 }
 

src/parsers.zig

@@ -464,7 +464,13 @@ pub const Parser = struct {
             method = try self.parsePreMethod();
         }
 
-        const name = try self.consumeSingle(.Identifier);
+        const orig_name = try self.consumeSingle(.Identifier);
+
+        const name = if (std.mem.eql(u8, orig_name.lexeme, "main")) blk: {
+            break :blk try self.mkToken(.Identifier, "__rayoko_main", orig_name.line);
+        } else blk: {
+            break :blk orig_name;
+        };
 
         self.setErrContext("function {}", name.lexeme);