parser: minor `match` simplification

vlib/builtin/int.v

@@ -411,6 +411,7 @@ pub fn (b []byte) clone() []byte {
 	return res
 }
 
+// TODO remove this once runes are implemented
 pub fn (b []byte) bytestr() string {
 	return bytes2string(b)
 }

vlib/v/builder/x64.v

@@ -21,7 +21,7 @@ pub fn (mut b Builder) build_x64(v_files []string, out_file string) {
 	t2 := time.ticks()
 	check_time := t2 - t1
 	b.timing_message('CHECK', check_time)
-	x64.gen(b.parsed_files, out_file, b.pref)
+	x64.gen(b.parsed_files, b.table, out_file, b.pref)
 	t3 := time.ticks()
 	gen_time := t3 - t2
 	b.timing_message('x64 GEN', gen_time)

vlib/v/checker/checker.v

@@ -1589,6 +1589,9 @@ pub fn (mut c Checker) enum_decl(decl ast.EnumDecl) {
 
 pub fn (mut c Checker) assign_stmt(mut assign_stmt ast.AssignStmt) {
 	c.expected_type = table.none_type // TODO a hack to make `x := if ... work`
+	defer {
+		c.expected_type = table.void_type
+	}
 	right_first := assign_stmt.right[0]
 	mut right_len := assign_stmt.right.len
 	if right_first is ast.CallExpr || right_first is ast.IfExpr || right_first is ast.MatchExpr {
@@ -1720,6 +1723,10 @@ pub fn (mut c Checker) assign_stmt(mut assign_stmt ast.AssignStmt) {
 			assign_stmt.op !in [.assign, .decl_assign] && !c.inside_unsafe {
 			c.warn('pointer arithmetic is only allowed in `unsafe` blocks', assign_stmt.pos)
 		}
+		if c.pref.translated {
+			// TODO fix this in C2V instead, for example cast enums to int before using `|` on them.
+			return
+		}
 		// Single side check
 		match assign_stmt.op {
 			.assign {} // No need to do single side check for =. But here put it first for speed.
@@ -1774,7 +1781,6 @@ pub fn (mut c Checker) assign_stmt(mut assign_stmt ast.AssignStmt) {
 				right.position())
 		}
 	}
-	c.expected_type = table.void_type
 }
 
 fn (mut c Checker) check_array_init_para_type(para string, expr ast.Expr, pos token.Position) {

vlib/v/gen/auto_str_methods.v

@@ -49,6 +49,7 @@ fn (mut g Gen) gen_str_for_type_with_styp(typ table.Type, styp string) string {
 			table.Struct { g.gen_str_for_struct(it, styp, str_fn_name) }
 			table.Map { g.gen_str_for_map(it, styp, str_fn_name) }
 			table.MultiReturn { g.gen_str_for_multi_return(it, styp, str_fn_name) }
+			table.SumType {}
 			else { verror("could not generate string method $str_fn_name for type \'$styp\'") }
 		}
 	}

vlib/v/gen/x64/gen.v

@@ -10,11 +10,13 @@ import v.errors
 import v.pref
 import term
 import strings
+import v.table
 
 pub struct Gen {
 	out_name             string
 	pref                 &pref.Preferences // Preferences shared from V struct
 mut:
+	table                &table.Table
 	buf                  []byte
 	sect_header_name_pos int
 	offset               i64
@@ -78,8 +80,9 @@ enum Size {
 	_64
 }
 
-pub fn gen(files []ast.File, out_name string, pref &pref.Preferences) {
+pub fn gen(files []ast.File, table &table.Table, out_name string, pref &pref.Preferences) {
 	mut g := Gen{
+		table: table
 		sect_header_name_pos: 0
 		out_name: out_name
 		pref: pref
@@ -725,11 +728,22 @@ fn (mut g Gen) assign_stmt(node ast.AssignStmt) {
 				g.allocate_var(name, 4, 0)
 				// `mov DWORD PTR [rbp-0x8],eax`
 				offset := g.get_var_offset(name)
-				println('ASS $name offset=$offset.hex2()')
+				println('infix assignment $name offset=$offset.hex2()')
 				g.mov_reg_to_rbp(offset, .eax)
 			}
+			ast.StructInit {
+				sym := g.table.get_type_symbol(right.typ)
+				// println(sym)
+				// println(typeof(sym.info))
+				info := sym.info as table.Struct
+				for field in info.fields {
+					field_name := name + '.' + field.name
+					println(field_name)
+					g.allocate_var(field_name, 4, 0)
+				}
+			}
 			else {
-				g.error_with_pos('assign_stmt unhandled expr: ' + typeof(right), right.position())
+				g.error_with_pos('x64 assign_stmt unhandled expr: ' + typeof(right), right.position())
 			}
 		}
 		// }

vlib/v/parser/if_match.v

@@ -152,7 +152,9 @@ fn (mut p Parser) match_expr() ast.MatchExpr {
 		p.next()
 		var_name = p.check_name()
 	}
-	p.check(.lcbr)
+	if p.tok.kind == .lcbr {
+		p.check(.lcbr)
+	}
 	mut branches := []ast.MatchBranch{}
 	for {
 		branch_first_pos := p.tok.position()
@@ -164,9 +166,9 @@ fn (mut p Parser) match_expr() ast.MatchExpr {
 		if p.tok.kind == .key_else {
 			is_else = true
 			p.next()
-		} else if p.tok.kind == .name && !(p.tok.lit == 'C' && p.peek_tok.kind == .dot) &&
-				(p.tok.lit in table.builtin_type_names || p.tok.lit[0].is_capital() ||
-				(p.peek_tok.kind == .dot && p.peek_tok2.lit[0].is_capital())) {
+		} else if p.tok.kind == .name && !(p.tok.lit == 'C' &&
+			p.peek_tok.kind == .dot) && (p.tok.lit in table.builtin_type_names || p.tok.lit[0].is_capital() ||
+			(p.peek_tok.kind == .dot && p.peek_tok2.lit[0].is_capital())) {
 			if var_name.len == 0 {
 				match cond {
 					ast.Ident {
@@ -256,7 +258,7 @@ fn (mut p Parser) match_expr() ast.MatchExpr {
 			post_comments: post_comments
 		}
 		p.close_scope()
-		if p.tok.kind == .rcbr {
+		if p.tok.kind == .rcbr || is_else {
 			break
 		}
 	}
@@ -266,7 +268,9 @@ fn (mut p Parser) match_expr() ast.MatchExpr {
 		pos: match_first_pos.pos
 		len: match_last_pos.pos - match_first_pos.pos + match_last_pos.len
 	}
-	p.check(.rcbr)
+	if p.tok.kind == .rcbr {
+		p.check(.rcbr)
+	}
 	// return ast.StructInit{}
 	return ast.MatchExpr{
 		branches: branches

vlib/v/tests/match_test.v

@@ -11,20 +11,19 @@ pub fn (c Color) str() string {
 fn test_match_integers() {
 	mut a := 3
 	mut b := 0
-	match a {
-		2 {
-			println('two')
-		}
-		3 {
-			println('three')
-			b = 3
-		}
-		4 {
-			println('four')
-		}
-		else {
-			println('???')
-		}
+	match a
+	2 {
+		println('two')
+	}
+	3 {
+		println('three')
+		b = 3
+	}
+	4 {
+		println('four')
+	}
+	else {
+		println('???')
 	}
 	assert b == 3
 	assert match 2 {