ADD: syntaxic sugar for module import.

doc/grammar.bnf

@@ -24,4 +24,5 @@ BLOCK ::= opar colon EXPR* cpar
 ARRAY ::= osquare EXPR* csquare
 IMPORT ::= opar import string cpar
 SHORT_IMPORT ::= opar decl import ident  string cpar
+SHORTER_IMPORT ::= opar decl import ident cpar
 NS ::= ident ns ident

lib/std/io.hpp

@@ -0,0 +1,24 @@
+#include "src/Loader.hpp"
+#include "src/Module.hpp"
+
+extern "C" void lib_io(grino::Loader& loader)
+{
+  auto mod = loader.add_module("io");
+
+  mod->loader()->add_native("print", [](auto args){
+    for (auto arg: args)
+      {
+        std::cout << arg->string();
+      }
+    return grino::Value::make_nil(grino::Loc {"io"});
+  });
+
+  mod->loader()->add_native("println", [](auto args){
+    for (auto arg: args)
+      {
+        std::cout << arg->string();
+      }
+    std::cout << std::endl;
+    return grino::Value::make_nil(grino::Loc {"io"});
+  });
+}

lib/std/std.cpp

@@ -0,0 +1,8 @@
+#include "src/Loader.hpp"
+
+#include "io.hpp"
+
+extern "C" void lib(grino::Loader& loader)
+{
+  lib_io(loader);
+}

meson.build

@@ -77,6 +77,16 @@ shared_library('grino_core',
                install: true,
                install_dir: grino_libdir)
 
+shared_library('grino_std',
+               sources: [
+                 'lib/std/std.cpp'
+               ],
+               dependencies: [
+                 grino_dep
+               ],
+               install: true,
+               install_dir: grino_libdir)
+
 executable('grino',
            sources: [
              'src/main.cpp'

src/Loc.hpp

@@ -8,7 +8,7 @@ namespace grino
   class Loc
   {
   public:
-    explicit Loc(std::filesystem::path path, int line);
+    explicit Loc(std::filesystem::path path, int line=0);
     virtual ~Loc();
 
     std::filesystem::path path() const { return m_path; }

src/Parser.cpp

@@ -118,7 +118,6 @@ namespace grino
 
   std::shared_ptr<Node> Parser::parse_expr()
   {
-
     if (type_is({NODE_IDENT, NODE_NS}))
       {
         return parse_ns();
@@ -335,7 +334,17 @@ namespace grino
     consume(NODE_DECL);
     consume(NODE_IMPORT);
     auto ident = consume(NODE_IDENT);
-    auto val = consume(NODE_STRING);
+    std::shared_ptr<Node> val;
+
+    if (type_is(NODE_STRING))
+      {
+        val = consume(NODE_STRING);
+      }
+    else
+      {
+        val = make_node(NODE_STRING, "'" + ident->repr() + "'");
+      }
+
     consume(NODE_CPAR);
 
     auto node = make_node(NODE_VARDECL);
@@ -347,5 +356,4 @@ namespace grino
 
     return node;
   }
-
 }

tests/Parser.cpp

@@ -116,4 +116,10 @@ TEST_CASE_METHOD(ParserTest, "Parser_import")
 
   test_parse("MODULE(VARDECL(IDENT[bim],IMPORT(STRING['hello'])))",
              "($ @bim 'hello')");
+
+  test_parse("MODULE(VARDECL(IDENT[bim],IMPORT(STRING['bim'])))",
+             "($ @ bim )");
+
+  test_parse("MODULE(VARDECL(IDENT[hello_world],IMPORT(STRING['hello_world'])))",
+             " ( $ @ hello_world )");
 }