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builtin: correct error underline for unicode wide chars (#9010)
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zakuro
GitHub
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e937d6249c
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ce115dcbe0
@ -22,26 +22,28 @@ pub fn utf32_to_str_no_malloc(code u32, buf voidptr) string {
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mut res := ''
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unsafe {
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mut buffer := byteptr(buf)
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if icode <= 127 { /* 0x7F */
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if icode <= 127 {
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// 0x7F
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buffer[0] = byte(icode)
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res = tos(buffer, 1)
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}
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else if icode <= 2047 { /* 0x7FF */
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buffer[0] = 192 | byte(icode>>6) /* 0xC0 - 110xxxxx */
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buffer[1] = 128 | byte(icode & 63) /* 0x80 - 0x3F - 10xxxxxx */
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} else if icode <= 2047 {
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// 0x7FF
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buffer[0] = 192 | byte(icode >> 6) // 0xC0 - 110xxxxx
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buffer[1] = 128 | byte(icode & 63) // 0x80 - 0x3F - 10xxxxxx
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res = tos(buffer, 2)
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}
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else if icode <= 65535 { /* 0xFFFF */
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buffer[0] = 224 | byte(icode>>12)/* 0xE0 - 1110xxxx */
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buffer[1] = 128 | (byte(icode>>6) & 63) /* 0x80 - 0x3F - 10xxxxxx */
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buffer[2] = 128 | byte(icode & 63) /* 0x80 - 0x3F - 10xxxxxx */
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} else if icode <= 65535 {
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// 0xFFFF
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buffer[0] = 224 | byte(icode >> 12) // 0xE0 - 1110xxxx
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buffer[1] = 128 | (byte(icode >> 6) & 63) // 0x80 - 0x3F - 10xxxxxx
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buffer[2] = 128 | byte(icode & 63) // 0x80 - 0x3F - 10xxxxxx
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res = tos(buffer, 3)
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}
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else if icode <= 1114111/* 0x10FFFF */ {
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buffer[0] = 240 | byte(icode>>18) /* 0xF0 - 11110xxx */
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buffer[1] = 128 | (byte(icode>>12) & 63) /* 0x80 - 0x3F - 10xxxxxx */
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buffer[2] = 128 | (byte(icode>>6) & 63) /* 0x80 - 0x3F - 10xxxxxx */
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buffer[3] = 128 | byte(icode & 63) /* 0x80 - 0x3F - 10xxxxxx */
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// 0x10FFFF
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else if icode <= 1114111 {
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buffer[0] = 240 | byte(icode >> 18) // 0xF0 - 11110xxx
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buffer[1] = 128 | (byte(icode >> 12) & 63) // 0x80 - 0x3F - 10xxxxxx
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buffer[2] = 128 | (byte(icode >> 6) & 63) // 0x80 - 0x3F - 10xxxxxx
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buffer[3] = 128 | byte(icode & 63) // 0x80 - 0x3F - 10xxxxxx
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res = tos(buffer, 4)
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}
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}
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@ -80,15 +82,13 @@ fn utf8_len(c byte) int {
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if (x & 240) != 0 {
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// 0xF0
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x >>= 4
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}
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else {
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} else {
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b += 4
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}
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if (x & 12) != 0 {
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// 0x0C
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x >>= 2
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}
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else {
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} else {
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b += 2
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}
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if (x & 2) == 0 {
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@ -114,7 +114,9 @@ fn utf8_str_len(s string) int {
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}
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// Calculate string length for formatting, i.e. number of "characters"
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fn utf8_str_visible_length(s string) int {
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// This is simplified implementation. if you need specification compliant width,
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// use utf8.east_asian.display_width.
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pub fn utf8_str_visible_length(s string) int {
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mut l := 0
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mut ul := 1
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for i := 0; i < s.len; i += ul {
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@ -129,24 +131,58 @@ fn utf8_str_visible_length(s string) int {
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return l
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}
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l++
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// recognize combining characters
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if c == 0xcc || c == 0xcd {
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r := (u16(c) << 8) | unsafe {s.str[i+1]}
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if r >= 0xcc80 && r < 0xcdb0 { // diacritical marks
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// recognize combining characters and wide characters
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match ul {
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2 {
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r := u64((u16(c) << 8) | unsafe { s.str[i + 1] })
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if r >= 0xcc80 && r < 0xcdb0 {
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// diacritical marks
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l--
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}
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} else if c == 0xe1 || c == 0xe2 || c == 0xef {
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r := (u32(c) << 16) | unsafe {(u32(s.str[i+1]) << 8) | s.str[i+2]}
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// diacritical marks extended 0xe1aab0 - 0xe1ac80
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// diacritical marks supplement 0xe1b780 - 0xe1b880
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// diacritical marks for symbols 0xe28390 - 0xe28480
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// half marks 0xefb8a0 - 0xefb8b0
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if (r >= 0xe1aab0 && r < 0xe1ac80)
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|| (r >= 0xe1b780 && r < 0xe1b880)
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|| (r >= 0xe28390 && r < 0xe28480)
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|| (r >= 0xefb8a0 && r < 0xefb8b0) {
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}
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3 {
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r := u64((u32(c) << 16) | unsafe { (u32(s.str[i + 1]) << 8) | s.str[i + 2] })
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// diacritical marks extended
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// diacritical marks supplement
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// diacritical marks for symbols
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if (r >= 0xe1aab0 && r <= 0xe1ac7f)
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|| (r >= 0xe1b780 && r <= 0xe1b87f)
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|| (r >= 0xe28390 && r <= 0xe2847f)
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|| (r >= 0xefb8a0 && r <= 0xefb8af) {
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// diacritical marks
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l--
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}
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// Hangru
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// CJK Unified Ideographics
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// Hangru
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// CJK
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else if (r >= 0xe18480 && r <= 0xe1859f)
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|| (r >= 0xe2ba80 && r <= 0xe2bf95)
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|| (r >= 0xe38080 && r <= 0xe4b77f)
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|| (r >= 0xe4b880 && r <= 0xea807f)
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|| (r >= 0xeaa5a0 && r <= 0xeaa79f)
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|| (r >= 0xeab080 && r <= 0xed9eaf)
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|| (r >= 0xefa480 && r <= 0xefac7f)
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|| (r >= 0xefb8b8 && r <= 0xefb9af) {
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// half marks
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l++
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}
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}
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4 {
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r := u64((u32(c) << 24) | unsafe {
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(u32(s.str[i + 1]) << 16) | (u32(s.str[i + 2]) << 8) | s.str[i + 3]
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})
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// Enclosed Ideographic Supplement
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// Emoji
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// CJK Unified Ideographs Extension B-G
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if (r >= 0x0f9f8880 && r <= 0xf09f8a8f)
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|| (r >= 0xf09f8c80 && r <= 0xf09f9c90)
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|| (r >= 0xf09fa490 && r <= 0xf09fa7af)
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|| (r >= 0xff0a08080 && r <= 0xf180807f) {
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l++
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}
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}
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else {}
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}
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}
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return l
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@ -4407,15 +4407,15 @@ fn (mut c Checker) match_exprs(mut node ast.MatchExpr, cond_type_sym table.TypeS
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for expr in branch.exprs {
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mut key := ''
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if expr is ast.RangeExpr {
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mut low := 0
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mut high := 0
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mut low := i64(0)
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mut high := i64(0)
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c.expected_type = node.expected_type
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low_expr := expr.low
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high_expr := expr.high
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if low_expr is ast.IntegerLiteral {
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if high_expr is ast.IntegerLiteral {
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low = low_expr.val.int()
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high = high_expr.val.int()
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low = low_expr.val.i64()
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high = high_expr.val.i64()
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} else {
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c.error('mismatched range types', low_expr.pos)
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}
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@ -4430,6 +4430,11 @@ fn (mut c Checker) match_exprs(mut node ast.MatchExpr, cond_type_sym table.TypeS
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typ := c.table.type_to_str(c.expr(expr.low))
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c.error('cannot use type `$typ` in match range', branch.pos)
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}
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high_low_cutoff := 1000
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if high - low > high_low_cutoff {
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c.warn('more than $high_low_cutoff possibilities ($low ... $high) in match range',
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branch.pos)
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}
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for i in low .. high + 1 {
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key = i.str()
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val := if key in branch_exprs { branch_exprs[key] } else { 0 }
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55
vlib/v/checker/tests/error_with_unicode.out
Normal file
55
vlib/v/checker/tests/error_with_unicode.out
Normal file
@ -0,0 +1,55 @@
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vlib/v/checker/tests/error_with_unicode.vv:5:17: error: cannot use `int literal` as `string` in argument 2 to `f1`
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3 |
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4 | fn main() {
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5 | f1('🐀🐈', 0)
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| ^
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6 | f2(0, '🐟🐧')
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7 | mut n := 0
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vlib/v/checker/tests/error_with_unicode.vv:6:8: error: cannot use `string` as `int` in argument 2 to `f2`
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4 | fn main() {
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5 | f1('🐀🐈', 0)
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6 | f2(0, '🐟🐧')
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| ~~~~~~
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7 | mut n := 0
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8 | n = '漢字'
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vlib/v/checker/tests/error_with_unicode.vv:8:6: error: cannot assign to `n`: expected `int`, not `string`
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6 | f2(0, '🐟🐧')
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7 | mut n := 0
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8 | n = '漢字'
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| ~~~~~~
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9 | n = 'ひらがな'
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10 | n = '简体字'
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vlib/v/checker/tests/error_with_unicode.vv:9:6: error: cannot assign to `n`: expected `int`, not `string`
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7 | mut n := 0
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8 | n = '漢字'
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9 | n = 'ひらがな'
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| ~~~~~~~~~~
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10 | n = '简体字'
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11 | n = '繁體字'
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vlib/v/checker/tests/error_with_unicode.vv:10:6: error: cannot assign to `n`: expected `int`, not `string`
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8 | n = '漢字'
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9 | n = 'ひらがな'
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10 | n = '简体字'
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| ~~~~~~~~
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11 | n = '繁體字'
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12 | n = '한글'
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vlib/v/checker/tests/error_with_unicode.vv:11:6: error: cannot assign to `n`: expected `int`, not `string`
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9 | n = 'ひらがな'
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10 | n = '简体字'
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11 | n = '繁體字'
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| ~~~~~~~~
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12 | n = '한글'
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13 | n = 'Кириллица'
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vlib/v/checker/tests/error_with_unicode.vv:12:6: error: cannot assign to `n`: expected `int`, not `string`
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10 | n = '简体字'
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11 | n = '繁體字'
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12 | n = '한글'
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| ~~~~~~
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13 | n = 'Кириллица'
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14 | }
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vlib/v/checker/tests/error_with_unicode.vv:13:6: error: cannot assign to `n`: expected `int`, not `string`
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11 | n = '繁體字'
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12 | n = '한글'
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13 | n = 'Кириллица'
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| ~~~~~~~~~~~
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14 | }
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14
vlib/v/checker/tests/error_with_unicode.vv
Normal file
14
vlib/v/checker/tests/error_with_unicode.vv
Normal file
@ -0,0 +1,14 @@
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fn f1(_ string, _ string) {}
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fn f2(_ int, _ int) {}
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fn main() {
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f1('🐀🐈', 0)
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f2(0, '🐟🐧')
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mut n := 0
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n = '漢字'
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n = 'ひらがな'
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n = '简体字'
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n = '繁體字'
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n = '한글'
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n = 'Кириллица'
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}
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@ -4,6 +4,7 @@
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module util
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import os
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import strings
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import term
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import v.token
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@ -132,14 +133,22 @@ pub fn source_context(kind string, source string, column int, pos token.Position
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// line, so that it prints the ^ character exactly on the *same spot*
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// where it is needed. That is the reason we can not just
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// use strings.repeat(` `, col) to form it.
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mut pointerline := ''
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for bchar in sline[..start_column] {
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x := if bchar.is_space() { bchar } else { ` ` }
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pointerline += x.ascii_str()
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mut pointerline_builder := strings.new_builder(sline.len)
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for i := 0; i < start_column; {
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if sline[i].is_space() {
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pointerline_builder.write_b(sline[i])
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i++
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} else {
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char_len := utf8_char_len(sline[i])
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spaces := ' '.repeat(utf8_str_visible_length(sline[i..i + char_len]))
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pointerline_builder.write_string(spaces)
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i += char_len
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}
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underline := if pos.len > 1 { '~'.repeat(end_column - start_column) } else { '^' }
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pointerline += bold(color(kind, underline))
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clines << ' | ' + pointerline.replace('\t', tab_spaces)
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}
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underline_len := utf8_str_visible_length(sline[start_column..end_column])
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underline := if underline_len > 1 { '~'.repeat(underline_len) } else { '^' }
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pointerline_builder.write_string(bold(color(kind, underline)))
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clines << ' | ' + pointerline_builder.str().replace('\t', tab_spaces)
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}
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}
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return clines
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