vlib: fix missing `else{}` in match statements

examples/tetris/tetris.v

@@ -402,6 +402,7 @@ fn key_down(wnd voidptr, key, code, action, mods int) {
 				game.state = .running
 			}
 		}
+		else {}
 	}
 
 	if game.state != .running {
@@ -434,5 +435,6 @@ fn key_down(wnd voidptr, key, code, action, mods int) {
 	glfw.KeyDown {
 		game.move_tetro() // drop faster when the player presses <down>
 	}
+	else { }
 	}
 }

vlib/bitfield/bitfield_test.v

@@ -117,6 +117,9 @@ fn test_hamming() {
 				input1.setbit(i)
 				input2.setbit(i)
 			}
+			else {
+
+			}
 		}
 	}
 	assert count == bitfield.hamming(input1, input2)

vlib/builtin/utf8.v

@@ -120,7 +120,7 @@ pub fn string_from_wide(_wstr &u16) string {
 
 pub fn string_from_wide2(_wstr &u16, len int) string {
     $if windows {
-    	num_chars := C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, 0, 0, 0, 0))
+    	num_chars := C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, 0, 0, 0, 0)
     	mut str_to := malloc(num_chars + 1)
     	if !isnil(str_to) {
     		C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, str_to, num_chars, 0, 0)

vlib/compiler/if_match.v

@@ -203,14 +203,8 @@ fn (p mut Parser) match_statement(is_expr bool) string {
 		i++
 		p.fgen_nl()
 	}
-
-	//if is_expr {
-		// we get here if no else found, ternary requires "else" branch
-		p.warn('match expression requires `else`')
-	//}
-
-	p.returns = false // only get here when no default, so return is not guaranteed
-
+	p.error('match expression requires `else`')
+	//p.returns = false // only get here when no default, so return is not guaranteed
 	return ''
 }
 

vlib/compiler/tests/match_test.v

@@ -51,6 +51,7 @@ fn test_match_integers() {
             a = a + 2
             a = a + 2
         }
+       else {}
     }
     assert a == 6
 

vlib/encoding/base64/base64.v

@@ -5,7 +5,7 @@
 module base64
 
 const (
-	Index = [int(0), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	Index = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	62, 63, 62, 62, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0,
 	0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,

vlib/encoding/csv/writer.v

@@ -52,12 +52,13 @@ pub fn (w mut Writer) write(record []string) ?bool {
 			if field.len > 0 {
 				z := field[0]
 				match z {
-				`"` {
-					w.sb.write('""')
-				}
-				`\r`, `\n` {
-					w.sb.write(le)
-				}
+					`"` {
+						w.sb.write('""')
+					}
+					`\r`, `\n` {
+						w.sb.write(le)
+					}
+					else {}
 				}
 				field = field[1..]
 			}

vlib/encoding/utf8/utf8_util.v

@@ -90,7 +90,7 @@ fn up_low(s string, upper_flag bool) string {
 			}
 		}
 		else if ch_len > 1 && ch_len < 5{
-			mut lword := int(0)
+			mut lword := 0
 
 			for i:=0; i < ch_len ; i++ {
 				lword = (lword << 8 ) | int( s.str[_index + i] )

vlib/gg/gg.v

@@ -382,7 +382,7 @@ pub fn (ctx &GG) draw_line_c(x, y, x2, y2 f32, color gx.Color) {
 	C.glDeleteBuffers(1, &ctx.vbo)
 	ctx.shader.use()
 	ctx.shader.set_color('color', color)
-	vertices := [f32(x), f32(y), f32(x2), f32(y2)] !
+	vertices := [x, y, x2, y2] !
 	gl.bind_vao(ctx.vao)
 	gl.set_vbo(ctx.vbo, vertices, C.GL_STATIC_DRAW)
 	gl.vertex_attrib_pointer(0, 2, C.GL_FLOAT, false, 2, 0)
@@ -433,7 +433,7 @@ pub fn (ctx &GG) draw_image(x, y, w, h f32, tex_id u32) {
 	gl.enable_vertex_attrib_array(1)
 	gl.vertex_attrib_pointer(2, 2, C.GL_FLOAT, false, 8, 6)
 	gl.enable_vertex_attrib_array(2)
-	gl.bind_2d_texture(u32(tex_id))
+	gl.bind_2d_texture(tex_id)
 	gl.bind_vao(ctx.vao)
 	gl.draw_elements(C.GL_TRIANGLES, 6, C.GL_UNSIGNED_INT, 0)
 }

vlib/glm/glm.v

@@ -166,8 +166,8 @@ pub fn ortho(left, right, bottom, top f32) Mat4 {
 	// mat<4, 4, T, defaultp> Result(static_cast<T>(1));
 	n := 16
 	mut res := f32_calloc(n)
-	res[0] = 2.0 / f32(right - left)  
-	res[5] = 2.0 / f32(top - bottom) 
+	res[0] = 2.0 / (right - left)
+	res[5] = 2.0 / (top - bottom)
 	res[10] = 1.0
 	res[12] = - (right + left) / (right - left)
 	res[13] = - (top + bottom) / (top - bottom)

vlib/json/json_primitives.v

@@ -74,7 +74,7 @@ fn jsdecode_f32(root &C.cJSON) f32 {
 	if isnil(root) {
 		return f32(0)
 	}
-	return f32(root.valuedouble)
+	return root.valuedouble
 }
 
 fn jsdecode_f64(root &C.cJSON) f64 {

vlib/math/bits.v

@@ -12,8 +12,8 @@ const (
 	mask      = 0x7FF
 	shift     = 64 - 11 - 1
 	bias      = 1023
-	sign_mask = u64(u64(1) << 63)
-	frac_mask = u64(u64(u64(1)<<u64(shift)) - u64(1))
+	sign_mask = (u64(1) << 63)
+	frac_mask = ((u64(1)<<u64(shift)) - u64(1))
 )
 
 // inf returns positive infinity if sign >= 0, negative infinity if sign < 0.

vlib/math/math.v

@@ -140,9 +140,9 @@ pub fn factorial(n f64) f64 {
 			return max_f64
 	}
 
-	/* Otherwise return n!. */
+	// Otherwise return n!.
 	if n == f64(i64(n)) && n >= 0.0 {
-			return f64(factorials[i64(n)])
+		return factorials[i64(n)]
 	}
 
 	return gamma(n + 1.0)

vlib/net/socket.v

@@ -277,7 +277,7 @@ pub fn (s Socket) read_line() string {
 	mut res := '' // The final result, including the ending \n.
 	for {
 		mut line := '' // The current line. Can be a partial without \n in it.
-		n := int(C.recv(s.sockfd, buf, MAX_READ-1, MSG_PEEK))
+		n := C.recv(s.sockfd, buf, MAX_READ-1, MSG_PEEK)
 		if n == -1 { return res }
 		if n == 0 {	return res }
 		buf[n] = `\0`

vlib/net/urllib/urllib.v

@@ -103,8 +103,9 @@ fn should_escape(c byte, mode EncodingMode) bool {
 			// everything, so escape nothing.
 			return false
 		}
+		else {}
 		}
-	}
+	} else {}
 	}
 
 	if mode == .encode_fragment {
@@ -118,6 +119,7 @@ fn should_escape(c byte, mode EncodingMode) bool {
 			`!`, `(`, `)`, `*`{
 				return false
 			}
+			else {}
 		}
 	}
 
@@ -184,7 +186,7 @@ fn unescape(s_ string, mode EncodingMode) ?string {
 					// That is, you can use escaping in the zone identifier but not
 					// to introduce bytes you couldn't just write directly.
 					// But Windows puts spaces here! Yay.
-					v := byte(unhex(s[i+1])<<byte(4) | unhex(s[i+2]))
+					v := (unhex(s[i+1])<<byte(4) | unhex(s[i+2]))
 					if s[i..i+3] != '%25' && v != ` ` && should_escape(v, .encode_host) {
 						error(error_msg(err_msg_escape, s[i..i+3]))
 					}
@@ -212,7 +214,7 @@ fn unescape(s_ string, mode EncodingMode) ?string {
 		x := s[i]
 		match x {
 			`%` {
-				t.write( byte(unhex(s[i+1])<<byte(4) | unhex(s[i+2])).str() )
+				t.write((unhex(s[i+1])<<byte(4) | unhex(s[i+2])).str() )
 				i += 2
 			}
 			`+` {