codegen: always export function main, since it is the entry point

bsc/codegen.py

@@ -31,7 +31,8 @@ def gen_file(self, file):
 
         module_fields = []
         for sym in file.mod_sym.scope.syms:
-            if sym.access_modifier.is_public():
+            if (file.mod_sym.is_pkg
+                and sym.name == "main") or sym.access_modifier.is_public():
                 module_fields.append(
                     LuaTableField(LuaIdent(sym.name), LuaIdent(sym.name))
                 )
@@ -104,8 +105,7 @@ def gen_fn_decl(self, decl):
         for arg in decl.args:
             args.append(LuaIdent(arg.name))
         luafn = LuaFunction(
-            decl.sym.codegen_qualname(), args,
-            is_associated = decl.sym.is_associated()
+            decl.sym.codegen_qualname(), args, is_static = decl.sym.is_static()
         )
         for arg in decl.args:
             if arg.default_value != None:

bsc/lua_ast/__init__.py

@@ -19,10 +19,10 @@ def __init__(self, fields):
         self.fields = fields
 
 class LuaFunction:
-    def __init__(self, name, args, is_associated = False):
+    def __init__(self, name, args, is_static = False):
         self.name = name
         self.args = args
-        self.is_associated = is_associated
+        self.is_static = is_static
         self.block = LuaBlock()
 
 # Statements

bsc/lua_ast/render.py

@@ -101,7 +101,7 @@ def render_mod(self, stmt):
         )
 
     def render_fn_stmt(self, stmt):
-        if not stmt.is_associated:
+        if not stmt.is_static:
             self.write("local ")
         self.write(f"function {stmt.name}(")
         for i, arg in enumerate(stmt.args):

bsc/sym.py

@@ -201,7 +201,7 @@ def __init__(self, access_modifier, name, args, scope, pos = None):
         scope.owner = self
         self.scope = scope
 
-    def is_associated(self):
+    def is_static(self):
         return isinstance(self.parent, TypeSym)
 
 class Scope: