namespaces: Add a namespace structure that represents a file

We have been always parsing a single function. Since we want to have
multiple functions in a near future, this patch introduces an namespace
that represents an entire file.

To ensure a function is defined inside a namespace, a helper function
was created. Today our ast_node structure is highly exposed, and this is
something that Johnny and I have been discussed. So then, this is a
first step to try to protected the code generation from our ast tree.

Signed-off-by: Carlos Maniero <carlos@maniero.me>

1 files changed, 5 insertions, 7 deletions

diff --git a/test/parser_test.c b/test/parser_test.c
index 8565dc8..78e2e23 100644
--- a/test/parser_test.c
+++ b/test/parser_test.c
@@ -64,17 +64,15 @@ test_parse_function(const MunitParameter params[], void *user_data_or_fixture)
   lexer_t lexer;
   scope_t *scope = scope_new();
 
-  make_lexer_from_static_src(&lexer, "fn main(): i32 { \nreturn 42;\n }");
+  make_lexer_from_static_src(&lexer, "fn add(): i32 { return 2; } fn main(): i32 { \nreturn 42;\n }");
   parser_init(&parser, &lexer, scope);
-  ast_node_t *ast_function = parser_parse_function_declaration(&parser);
+  ast_node_t *ast_ns = parser_parse_ns(&parser);
 
-  assert_not_null(ast_function);
+  assert_not_null(ast_ns);
 
-  char actual[5];
+  ast_node_t *ast_function = ast_node_ns_get_function_node_by_name(ast_ns, "main");
 
-  string_view_to_str(&ast_function->data.function.identifier.name, actual);
-  assert_string_equal("main", actual);
-  assert_int(AST_FUNCTION_DECLARATION, ==, ast_function->kind);
+  assert_not_null(ast_function);
 
   ast_node_t *ast_return = vector_at(ast_function->data.function.body->data.block.body, 0);