cgen: $action (ComptimeCall); vweb: hello world works!

examples/vweb/vweb_example.v

@@ -27,7 +27,8 @@ pub fn (mut app App) json_endpoint() {
 
 pub fn (mut app App) index() {
 	app.cnt++
-	$vweb.html()
+	app.vweb.text('Hello world from vweb')
+	//$vweb.html()
 }
 
 pub fn (mut app App) reset() {

vlib/v/ast/ast.v

@@ -778,8 +778,11 @@ pub mut:
 }
 
 pub struct ComptimeCall {
-	name string
+pub:
+	method_name string
 	left        Expr
+pub mut:
+	sym         table.TypeSymbol
 }
 
 pub struct None {

vlib/v/checker/checker.v

@@ -1258,10 +1258,11 @@ pub fn (mut c Checker) return_stmt(mut return_stmt ast.Return) {
 	}
 	for i, exp_type in expected_types {
 		got_typ := c.unwrap_generic(got_types[i])
-		if got_typ.has_flag(.optional) &&
-			(!exp_type.has_flag(.optional) || c.table.type_to_str(got_typ) != c.table.type_to_str(exp_type)) {
+		if got_typ.has_flag(.optional) && (!exp_type.has_flag(.optional) || c.table.type_to_str(got_typ) !=
+			c.table.type_to_str(exp_type)) {
 			pos := return_stmt.exprs[i].position()
-			c.error('cannot use `${c.table.type_to_str(got_typ)}` as type `${c.table.type_to_str(exp_type)}` in return argument', pos)
+			c.error('cannot use `${c.table.type_to_str(got_typ)}` as type `${c.table.type_to_str(exp_type)}` in return argument',
+				pos)
 		}
 		if !c.check_types(got_typ, exp_type) {
 			got_typ_sym := c.table.get_type_symbol(got_typ)
@@ -1825,6 +1826,10 @@ pub fn (mut c Checker) expr(node ast.Expr) table.Type {
 		ast.CharLiteral {
 			return table.byte_type
 		}
+		ast.ComptimeCall {
+			it.sym = c.table.get_type_symbol(c.unwrap_generic(c.expr(it.left)))
+			return table.void_type
+		}
 		ast.ConcatExpr {
 			return c.concat_expr(mut it)
 		}

vlib/v/gen/cgen.v

@@ -1430,7 +1430,7 @@ fn (mut g Gen) expr(node ast.Expr) {
 			g.write("'$it.val'")
 		}
 		ast.ComptimeCall {
-			g.write('/*c*/')
+			g.comptime_call(it)
 		}
 		ast.ConcatExpr {
 			g.concat_expr(it)
@@ -4336,7 +4336,7 @@ fn (mut g Gen) array_init(it ast.ArrayInit) {
 
 // `ui.foo(button)` =>
 // `ui__foo(I_ui__Button_to_ui__Widget(` ...
-fn (g &Gen) interface_call(typ, interface_type table.Type) {
+fn (mut g Gen) interface_call(typ, interface_type table.Type) {
 	interface_styp := g.cc_type(interface_type)
 	styp := g.cc_type(typ)
 	mut cast_fn_name := 'I_${styp}_to_Interface_${interface_styp}'
@@ -4349,6 +4349,29 @@ fn (g &Gen) interface_call(typ, interface_type table.Type) {
 	}
 }
 
+fn (g &Gen) comptime_call(node ast.ComptimeCall) {
+	g.writeln('// $' + 'method call. sym="$node.sym.name"')
+	mut j := 0
+	for method in node.sym.methods {
+		if method.return_type != table.void_type {
+			continue
+		}
+		// receiver := method.args[0]
+		// if !p.expr_var.ptr {
+		// p.error('`$p.expr_var.name` needs to be a reference')
+		// }
+		amp := '' // if receiver.is_mut && !p.expr_var.ptr { '&' } else { '' }
+		if j > 0 {
+			g.write(' else ')
+		}
+		g.write('if (string_eq($node.method_name, tos_lit("$method.name"))) ')
+		g.write('${node.sym.name}_$method.name ($amp ')
+		g.expr(node.left)
+		g.writeln(');')
+		j++
+	}
+}
+
 fn (mut g Gen) panic_debug_info(pos token.Position) (int, string, string, string) {
 	paline := pos.line_nr + 1
 	pafile := g.fn_decl.file.replace('\\', '/')

vlib/v/parser/comptime.v

@@ -220,7 +220,6 @@ fn os_from_string(os string) pref.OS {
 fn (mut p Parser) comptime_method_call(left ast.Expr) ast.ComptimeCall {
 	p.check(.dollar)
 	method_name := p.check_name()
-	_ = method_name
 	/*
 	mut j := 0
 	sym := p.table.get_type_symbol(typ)
@@ -256,6 +255,6 @@ fn (mut p Parser) comptime_method_call(left ast.Expr) ast.ComptimeCall {
 	}
 	return ast.ComptimeCall{
 		left: left
-		name: method_name
+		method_name: method_name
 	}
 }

vlib/vweb/vweb.v

@@ -283,9 +283,9 @@ fn handle_conn<T>(conn net.Socket, mut app T) {
 	}
 
 	// Call the right action
-	$if debug {
+	//$if debug {
 		println('action=$action')
-	}
+	//}
 	app.$action()
 	/*
 	app.$action() or {