compiler: generics - support across modules/files

vlib/compiler/main.v

@@ -71,6 +71,7 @@ pub mut:
 	parsers    []Parser     // file parsers
 	vgen_buf   strings.Builder // temporary buffer for generated V code (.str() etc)
 	file_parser_idx map[string]int // map absolute file path to v.parsers index
+	gen_parser_idx  map[string]int
 	cached_mods []string
 }
 
@@ -289,19 +290,22 @@ pub fn (v mut V) compile() {
 			// new vfmt is not ready yet
 		//}
 	}
+
+	// add parser generated V code (str() methods etc)
+	mut vgen_parser := v.new_parser_from_string(v.vgen_buf.str())
+	// free the string builder which held the generated methods
+	v.vgen_buf.free()
+	vgen_parser.is_vgen = true
+	v.add_parser(vgen_parser)
+	// run vgen / generic parsers
+	for i, _ in v.parsers {
+		if !v.parsers[i].is_vgen { continue }
+		v.parsers[i].parse(.main)
+	}
 	// Generate .vh if we are building a module
 	if v.pref.build_mode == .build_module {
 		generate_vh(v.dir)
 	}
-
-	// parse generated V code (str() methods etc)
-	mut vgen_parser := v.new_parser_from_string(v.vgen_buf.str())
-	// free the string builder which held the generated methods
-	vgen_parser.is_vgen = true
-	v.vgen_buf.free()
-	vgen_parser.parse(.main)
-	// v.parsers.add(vgen_parser)
-
 	// All definitions
 	mut def := strings.new_builder(10000)// Avoid unnecessary allocations
 	$if !js {
@@ -633,6 +637,13 @@ pub fn (v mut V) add_v_files_to_compile() {
 	// resolve deps and add imports in correct order
 	imported_mods := v.resolve_deps().imports()
 	for mod in imported_mods {
+		// TODO: work out bug and only add when needed in fn.v
+		if !mod in v.gen_parser_idx {
+			mut gp := v.new_parser_from_string('module '+mod.all_after('.')+'\n')
+			gp.is_vgen = true
+			gp.mod = mod
+			v.gen_parser_idx[mod] = v.add_parser(gp)
+		}
 		if mod == 'builtin' || mod == 'main' {
 			// builtin already added
 			// main files will get added last