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ww/lib/strings/stringstest.ww

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// stringstest — exercises lib/strings. Run with
// `out/bin/ww run lib/strings/stringstest.ww`.
// Same signalled-then-fail()-with-+10 shape as bytes / utf8 / hex /
// time tests: non-zero exit pinpoints the failing scenario.
//
// Vectors mirror ref/hare/strings/{dup,concat,trim,contains,index,
// suffix,compare}.ha where ww can express them.
package strings;
import strings;
import encoding.utf8;
import os;
let signalled: i32 = 0;
fn fail() void = { os.exit(signalled + 10); };
fn streq(a: str, b: str) bool = {
if (a.len != b.len) { return false; };
let i: i32 = 0;
for (i < a.len) {
if (a[i] != b[i]) { return false; };
i += 1;
};
return true;
};
// ---- dup --------------------------------------------------------------
// ref/hare/strings/dup.ha:45.
@test fn dup_cases() void = {
let e: str = strings.dup("");
if (!streq(e, "")) { fail(); };
if (e.len != 0) { fail(); };
let h: str = strings.dup("hello");
if (!streq(h, "hello")) { fail(); };
defer os.free(h.ptr: *void, h.len: u64);
// multi-byte UTF-8: dup must copy raw bytes, not aliased view.
let m: str = strings.dup("こんにちは");
if (m.len != 15) { fail(); };
if (!streq(m, "こんにちは")) { fail(); };
if (m.ptr == "こんにちは".ptr) { fail(); }; // fresh alloc
defer os.free(m.ptr: *void, m.len: u64);
};
// ---- concat -----------------------------------------------------------
// ref/hare/strings/concat.ha:18. Rows mirror Hare's vectors (0/1/2/3-arg,
// empty-mid, 2-empty) plus empty-first / empty-last / multibyte. The
// per-row `signalled` bump narrows a failure exit code to the offending
// row.
@test fn concat_cases() void = {
let pool: [17]str;
pool[0] = "hello";
pool[1] = "hello ";
pool[2] = "world";
pool[3] = "hello";
pool[4] = " ";
pool[5] = "world";
pool[6] = "hello";
pool[7] = "";
pool[8] = "world";
pool[9] = "";
pool[10] = "";
pool[11] = "";
pool[12] = "world";
pool[13] = "hello";
pool[14] = "";
pool[15] = "こん";
pool[16] = "にちは";
let argo: [9]i32;
let argn: [9]i32;
let want: [9]str;
let labels: [9]str;
argo[0]=0; argn[0]=0; want[0]=""; labels[0]="0-arg";
argo[1]=0; argn[1]=1; want[1]="hello"; labels[1]="1-arg";
argo[2]=1; argn[2]=2; want[2]="hello world"; labels[2]="2-arg";
argo[3]=3; argn[3]=3; want[3]="hello world"; labels[3]="3-arg";
argo[4]=6; argn[4]=3; want[4]="helloworld"; labels[4]="empty-mid";
argo[5]=9; argn[5]=2; want[5]=""; labels[5]="2-empty";
argo[6]=11; argn[6]=2; want[6]="world"; labels[6]="empty-first";
argo[7]=13; argn[7]=2; want[7]="hello"; labels[7]="empty-last";
argo[8]=15; argn[8]=2; want[8]="こんにちは"; labels[8]="multibyte";
let i: i32 = 0;
for (i < 9) {
signalled = 200 + i;
let argv: []str;
argv.ptr = &pool[argo[i]];
argv.len = argn[i];
argv.cap = argn[i];
let got: str = strings.concat(argv...);
if (!streq(got, want[i])) { fail(); };
if (got.len > 0) { os.free(got.ptr: *void, got.len: u64); };
i += 1;
};
};
// ---- join -------------------------------------------------------------
// ref/hare/strings/concat.ha:64. Rows mirror Hare's @test fn join
// (0-arg, 1-arg, empty-sep, 3-arg.) plus 2-arg, all-empties, long sep,
// multibyte, empty-mid (delim still inserted around the empty slot).
// Per-row `signalled` 1620+i narrows the failing row.
@test fn join_cases() void = {
let pool: [19]str;
pool[0] = "hello";
pool[1] = "a";
pool[2] = "b";
pool[3] = "a";
pool[4] = "b";
pool[5] = "c";
pool[6] = "a";
pool[7] = "b";
pool[8] = "c";
pool[9] = "";
pool[10] = "";
pool[11] = "a";
pool[12] = "b";
pool[13] = "c";
pool[14] = "こん";
pool[15] = "にちは";
pool[16] = "a";
pool[17] = "";
pool[18] = "b";
let argo: [9]i32;
let argn: [9]i32;
let seps: [9]str;
let want: [9]str;
argo[0]=0; argn[0]=0; seps[0]="."; want[0]="";
argo[1]=0; argn[1]=1; seps[1]="."; want[1]="hello";
argo[2]=1; argn[2]=2; seps[2]=", "; want[2]="a, b";
argo[3]=3; argn[3]=3; seps[3]="."; want[3]="a.b.c";
argo[4]=6; argn[4]=3; seps[4]=""; want[4]="abc";
argo[5]=9; argn[5]=2; seps[5]=","; want[5]=",";
argo[6]=11; argn[6]=3; seps[6]=" :: "; want[6]="a :: b :: c";
argo[7]=14; argn[7]=2; seps[7]="・"; want[7]="こん・にちは";
argo[8]=16; argn[8]=3; seps[8]="-"; want[8]="a--b";
let i: i32 = 0;
for (i < 9) {
signalled = 1620 + i;
let argv: []str;
argv.ptr = &pool[argo[i]];
argv.len = argn[i];
argv.cap = argn[i];
let got: str = strings.join(seps[i], argv...);
if (!streq(got, want[i])) { fail(); };
if (got.len > 0) { os.free(got.ptr: *void, got.len: u64); };
i += 1;
};
};
// ---- hasprefix --------------------------------------------------------
// ref/hare/strings/suffix.ha:18.
@test fn hasprefix_cases() void = {
if (!strings.hasprefix("hello world", "hello")) { fail(); };
if (!strings.hasprefix("hello world", 'h')) { fail(); };
if ( strings.hasprefix("hello world", "world")) { fail(); };
if ( strings.hasprefix("hello world", 'q')) { fail(); };
if (!strings.hasprefix("hello", "hello")) { fail(); }; // equal-len
if (!strings.hasprefix("anything", "")) { fail(); }; // empty prefix
if ( strings.hasprefix("", "x")) { fail(); };
// multibyte rune prefix — '\'é\'' literal blocked by single-byte
// lexrune (lib/ww/lex/lex.ww:659); pass codepoint directly.
if (!strings.hasprefix("éclat", 0xE9u32: rune)) { fail(); };
if (!strings.hasprefix("🦀rust", 0x1F980u32: rune)) { fail(); };
};
// ---- hassuffix --------------------------------------------------------
// ref/hare/strings/suffix.ha:36.
@test fn hassuffix_cases() void = {
if (!strings.hassuffix("hello world", "world")) { fail(); };
if (!strings.hassuffix("hello world", 'd')) { fail(); };
if ( strings.hassuffix("hello world", "hello")) { fail(); };
if ( strings.hassuffix("hello world", 'h')) { fail(); };
if (!strings.hassuffix("café", 0xE9u32: rune)) { fail(); }; // multibyte
};
// ---- contains ---------------------------------------------------------
// ref/hare/strings/contains.ha:27.
@test fn contains_cases() void = {
if (!strings.contains("hello world", "hello")) { fail(); };
if (!strings.contains("hello world", 'h')) { fail(); };
if ( strings.contains("hello world", 'x')) { fail(); };
if (!strings.contains("hello world", "world")) { fail(); };
if (!strings.contains("hello world", "")) { fail(); }; // empty hits at 0
if ( strings.contains("hello world", "foobar")) { fail(); };
if (!strings.contains("こんにちは", 0x306Bu32: rune)) { fail(); }; // 'に'
if (!strings.contains("こんにちは", "ちは")) { fail(); };
// Variadic rows. ref/hare/strings/contains.ha:27.
signalled = 1600;
if ( strings.contains("hello")) { fail(); };
signalled = 1601;
if (!strings.contains("hello world", "world")) { fail(); };
signalled = 1602;
if (!strings.contains("hello", 'l')) { fail(); };
signalled = 1603;
if (!strings.contains("hello world", "foo", "world", 'x')) { fail(); };
signalled = 1604;
if ( strings.contains("hello", "foo", 'z', "bar")) { fail(); };
signalled = 1605;
if (!strings.contains("héllo", "x", 0xE9u32: rune)) { fail(); };
};
// ---- byteindex --------------------------------------------------------
// ref/hare/strings/index.ha:147 (byteindex tests, both arms).
@test fn byteindex_str_cases() void = {
match (strings.byteindex("hello", "hello")) {
case let i: i32 => { if (i != 0) { fail(); }; };
case void => { fail(); };
};
match (strings.byteindex("hello world!", "world")) {
case let i: i32 => { if (i != 6) { fail(); }; };
case void => { fail(); };
};
match (strings.byteindex("hello world!", "orld!")) {
case let i: i32 => { if (i != 7) { fail(); }; };
case void => { fail(); };
};
match (strings.byteindex("hello world!", "word")) {
case let i: i32 => { fail(); };
case void => void;
};
// empty needle hits at 0 (ref/hare/bytes/index.ha:63).
match (strings.byteindex("hello", "")) {
case let i: i32 => { if (i != 0) { fail(); }; };
case void => { fail(); };
};
// empty haystack, non-empty needle — absent.
match (strings.byteindex("", "x")) {
case let i: i32 => { fail(); };
case void => void;
};
// multibyte substring in multibyte haystack.
match (strings.byteindex("こんにちは", "ちは")) {
case let i: i32 => { if (i != 9) { fail(); }; };
case void => { fail(); };
};
};
@test fn byteindex_rune_cases() void = {
// ASCII rune (1-byte encoding).
match (strings.byteindex("hello world", 'w')) {
case let i: i32 => { if (i != 6) { fail(); }; };
case void => { fail(); };
};
// 2-byte rune U+00E9 'é' inside "café".
match (strings.byteindex("café", 0xE9u32: rune)) {
case let i: i32 => { if (i != 3) { fail(); }; };
case void => { fail(); };
};
// 3-byte rune U+3061 'ち' inside "こんにちは".
match (strings.byteindex("こんにちは", 0x3061u32: rune)) {
case let i: i32 => { if (i != 9) { fail(); }; };
case void => { fail(); };
};
// 4-byte rune U+1F980 '🦀' inside "ab🦀cd".
match (strings.byteindex("ab🦀cd", 0x1F980u32: rune)) {
case let i: i32 => { if (i != 2) { fail(); }; };
case void => { fail(); };
};
// absent.
match (strings.byteindex("こんにちは", 'q')) {
case let i: i32 => { fail(); };
case void => void;
};
};
// ---- rbyteindex -------------------------------------------------------
@test fn rbyteindex_cases() void = {
// Two 'た' in "またあったね" — ref/hare/strings/index.ha:160-161.
match (strings.byteindex("またあったね", "た")) {
case let i: i32 => { if (i != 3) { fail(); }; };
case void => { fail(); };
};
match (strings.rbyteindex("またあったね", "た")) {
case let i: i32 => { if (i != 12) { fail(); }; };
case void => { fail(); };
};
// Rune arm, multi-byte 'に' U+306B.
match (strings.rbyteindex("こんにちは", 0x306Bu32: rune)) {
case let i: i32 => { if (i != 6) { fail(); }; };
case void => { fail(); };
};
// Absent.
match (strings.rbyteindex("abc", 'z')) {
case let i: i32 => { fail(); };
case void => void;
};
};
// ---- index ------------------------------------------------------------
// ref/hare/strings/index.ha:108. Rune-wise offset, NOT byte-wise — the
// multibyte rows pin that distinction (Hare doc at index.ha:7).
@test fn index_cases() void = {
// str-arm: ASCII haystack/needle, mid-string match.
signalled = 1400;
match (strings.index("hello", "ll")) {
case let i: i32 => { if (i != 2) { fail(); }; };
case void => { fail(); };
};
// str-arm: absent needle.
signalled = 1401;
match (strings.index("hello", "world")) {
case let i: i32 => { fail(); };
case void => void;
};
// Hare vectors at ref/hare/strings/index.ha:113-119.
signalled = 1402;
match (strings.index("hello world!", "hello")) {
case let i: i32 => { if (i != 0) { fail(); }; };
case void => { fail(); };
};
signalled = 1403;
match (strings.index("hello world!", "world")) {
case let i: i32 => { if (i != 6) { fail(); }; };
case void => { fail(); };
};
signalled = 1404;
match (strings.index("hello world!", "orld!")) {
case let i: i32 => { if (i != 7) { fail(); }; };
case void => { fail(); };
};
// Multibyte haystack + str needle: "ちは" at rune index 3
// in "こんにちは" (byteindex returns 9, rune-index is 3).
signalled = 1405;
match (strings.index("こんにちは", "ちは")) {
case let i: i32 => { if (i != 3) { fail(); }; };
case void => { fail(); };
};
// rune-arm.
signalled = 1406;
match (strings.index("hello", 'l')) {
case let i: i32 => { if (i != 2) { fail(); }; };
case void => { fail(); };
};
signalled = 1407;
match (strings.index("hello world", 'w')) {
case let i: i32 => { if (i != 6) { fail(); }; };
case void => { fail(); };
};
// Multibyte rune: 'é' U+00E9 at rune 1 in "héllo" — pins
// rune-index vs byte-index (byteindex returns 1; rune-index is
// 1 also — but the str-arm's 1405 row covers the distinction).
signalled = 1408;
match (strings.index("héllo", 0xE9u32: rune)) {
case let i: i32 => { if (i != 1) { fail(); }; };
case void => { fail(); };
};
// Multibyte rune in multibyte haystack: 'ち' U+3061 at rune 3
// in "こんにちは" (byteindex returns 9, rune-index is 3).
signalled = 1409;
match (strings.index("こんにちは", 0x3061u32: rune)) {
case let i: i32 => { if (i != 3) { fail(); }; };
case void => { fail(); };
};
signalled = 1410;
match (strings.index("こんにちは", 'q')) {
case let i: i32 => { fail(); };
case void => void;
};
};
// ---- rindex -----------------------------------------------------------
// ref/hare/strings/index.ha:22. Symmetric: last-occurrence rune index.
@test fn rindex_cases() void = {
// str-arm.
signalled = 1500;
match (strings.rindex("hello", "lo")) {
case let i: i32 => { if (i != 3) { fail(); }; };
case void => { fail(); };
};
// Hare vector at ref/hare/strings/index.ha:122.
signalled = 1501;
match (strings.rindex("hello world!", "o")) {
case let i: i32 => { if (i != 7) { fail(); }; };
case void => { fail(); };
};
signalled = 1502;
match (strings.rindex("hello", "world")) {
case let i: i32 => { fail(); };
case void => void;
};
// Multibyte: last "た" in "またあったね" — rbyteindex returns
// 12, rune-index is 4 (ま=0 た=1 あ=2 っ=3 た=4 ね=5).
signalled = 1503;
match (strings.rindex("またあったね", "た")) {
case let i: i32 => { if (i != 4) { fail(); }; };
case void => { fail(); };
};
// rune-arm.
signalled = 1504;
match (strings.rindex("hello", 'l')) {
case let i: i32 => { if (i != 3) { fail(); }; };
case void => { fail(); };
};
signalled = 1505;
match (strings.rindex("aaaaa", 'a')) {
case let i: i32 => { if (i != 4) { fail(); }; };
case void => { fail(); };
};
// Multibyte rune: 'に' U+306B at rune 2 in "こんにちは".
signalled = 1506;
match (strings.rindex("こんにちは", 0x306Bu32: rune)) {
case let i: i32 => { if (i != 2) { fail(); }; };
case void => { fail(); };
};
signalled = 1507;
match (strings.rindex("hello", 'z')) {
case let i: i32 => { fail(); };
case void => void;
};
};
// ---- trimprefix / trimsuffix ------------------------------------------
// ref/hare/strings/trim.ha:99-107.
@test fn trimprefix_cases() void = {
if (!streq(strings.trimprefix("", ""), "")) { fail(); };
if (!streq(strings.trimprefix("", "blablabla"), "")) { fail(); };
if (!streq(strings.trimprefix("hello, world", "hello"), ", world")) { fail(); };
if (!streq(strings.trimprefix("blablabla", "bla"), "blabla")) { fail(); };
// equal-length match strips to empty.
if (!streq(strings.trimprefix("hello", "hello"), "")) { fail(); };
};
@test fn trimsuffix_cases() void = {
if (!streq(strings.trimsuffix("", ""), "")) { fail(); };
if (!streq(strings.trimsuffix("", "blablabla"), "")) { fail(); };
if (!streq(strings.trimsuffix("hello, world", "world"), "hello, ")) { fail(); };
if (!streq(strings.trimsuffix("blablabla", "bla"), "blabla")) { fail(); };
if (!streq(strings.trimsuffix("hello", "hello"), "")) { fail(); };
};
// ---- ltrim / rtrim / trim ---------------------------------------------
// ref/hare/strings/trim.ha:75-97. Bytes.ltrim whitespace-default rows
// (`ltrim(" hi") == "hi"`, etc.) deferred — they need lib/bytes
// variadic graduation.
@test fn ltrim_cases() void = {
let runes: [9]rune;
runes[0] = 'x';
runes[1] = 'a';
runes[2] = 0x1D68Au32: rune;
runes[3] = '(';
runes[4] = ')';
runes[5] = 'a';
runes[6] = 'b';
runes[7] = 'c';
runes[8] = 'd';
let inputs: [8]str;
let argo: [8]i32;
let argn: [8]i32;
let want: [8]str;
inputs[0]=""; argo[0]=0; argn[0]=1; want[0]="";
inputs[1]="aaabc"; argo[1]=1; argn[1]=1; want[1]="bc";
inputs[2]="xyz"; argo[2]=1; argn[2]=1; want[2]="xyz";
inputs[3]="aaaa"; argo[3]=1; argn[3]=1; want[3]="";
inputs[4]="𝚊𝚊hi"; argo[4]=2; argn[4]=1; want[4]="hi";
inputs[5]="((()(())))())"; argo[5]=3; argn[5]=2; want[5]="";
inputs[6]="abacadabra"; argo[6]=5; argn[6]=4; want[6]="ra";
inputs[7]="hello"; argo[7]=0; argn[7]=0; want[7]="hello";
let i: i32 = 0;
for (i < 8) {
signalled = 1100 + i;
let argv: []rune;
argv.ptr = &runes[argo[i]];
argv.len = argn[i];
argv.cap = argn[i];
let got: str = strings.ltrim(inputs[i], argv...);
if (!streq(got, want[i])) { fail(); };
i += 1;
};
};
@test fn rtrim_cases() void = {
let runes: [19]rune;
runes[0] = 'x';
runes[1] = 'a';
runes[2] = 0x1D68Au32: rune;
runes[3] = 'w';
runes[4] = 'd';
runes[5] = 'o';
runes[6] = 'r';
runes[7] = ' ';
runes[8] = 's';
runes[9] = 'i';
runes[10] = 'l';
runes[11] = 'z';
runes[12] = 't';
runes[13] = 'm';
runes[14] = 'n';
runes[15] = 'o';
runes[16] = 'e';
runes[17] = 'a';
runes[18] = 'd';
let inputs: [8]str;
let argo: [8]i32;
let argn: [8]i32;
let want: [8]str;
inputs[0]=""; argo[0]=0; argn[0]=1; want[0]="";
inputs[1]="bcaaa"; argo[1]=1; argn[1]=1; want[1]="bc";
inputs[2]="xyz"; argo[2]=1; argn[2]=1; want[2]="xyz";
inputs[3]="aaaa"; argo[3]=1; argn[3]=1; want[3]="";
inputs[4]="hi𝚊𝚊"; argo[4]=2; argn[4]=1; want[4]="hi";
inputs[5]="yellowwooddoor";
argo[5]=3; argn[5]=4; want[5]="yell";
inputs[6]="Sentimentalized sensationalism sensationalized sentimentalisms";
argo[6]=7; argn[6]=12; want[6]="S";
inputs[7]="hello"; argo[7]=0; argn[7]=0; want[7]="hello";
let i: i32 = 0;
for (i < 8) {
signalled = 1200 + i;
let argv: []rune;
argv.ptr = &runes[argo[i]];
argv.len = argn[i];
argv.cap = argn[i];
let got: str = strings.rtrim(inputs[i], argv...);
if (!streq(got, want[i])) { fail(); };
i += 1;
};
};
@test fn trim_cases() void = {
let runes: [8]rune;
runes[0] = 'x';
runes[1] = 'a';
runes[2] = 'm';
runes[3] = 'i';
runes[4] = 'p';
runes[5] = 's';
runes[6] = '[';
runes[7] = ']';
let inputs: [7]str;
let argo: [7]i32;
let argn: [7]i32;
let want: [7]str;
inputs[0]=""; argo[0]=0; argn[0]=1; want[0]="";
inputs[1]="aaabcaaa"; argo[1]=1; argn[1]=1; want[1]="bc";
inputs[2]="xyz"; argo[2]=1; argn[2]=1; want[2]="xyz";
inputs[3]="aaaa"; argo[3]=1; argn[3]=1; want[3]="";
inputs[4]="mississippi"; argo[4]=2; argn[4]=4; want[4]="";
inputs[5]="[[][[[]]][][].[[]][]]][]]]";
argo[5]=6; argn[5]=2; want[5]=".";
inputs[6]="hello"; argo[6]=0; argn[6]=0; want[6]="hello";
let i: i32 = 0;
for (i < 7) {
signalled = 1300 + i;
let argv: []rune;
argv.ptr = &runes[argo[i]];
argv.len = argn[i];
argv.cap = argn[i];
let got: str = strings.trim(inputs[i], argv...);
if (!streq(got, want[i])) { fail(); };
i += 1;
};
};
// ---- compare ----------------------------------------------------------
// ref/hare/strings/compare.ha:16.
@test fn compare_cases() void = {
if (strings.compare("ABC", "ABC") != 0) { fail(); };
if (strings.compare("ABC", "AB") <= 0) { fail(); };
if (strings.compare("AB", "ABC") >= 0) { fail(); };
if (strings.compare("BCD", "ABC") <= 0) { fail(); };
if (strings.compare("ABC", "abc") >= 0) { fail(); };
};
// ---- toutf8 / fromutf8_unsafe roundtrip -------------------------------
// ref/hare/strings/utf8.ha:31.
@test fn utf8_roundtrip_cases() void = {
let s: str = "hello";
let b: []u8 = strings.toutf8(s);
if (b.len != 5) { fail(); };
if (b[0] != 104u8) { fail(); }; // 'h'
let r: str = strings.fromutf8_unsafe(b);
if (!streq(r, "hello")) { fail(); };
if (r.ptr != s.ptr) { fail(); }; // borrowed, not copied
};
// ---- iter / next ------------------------------------------------------
// ref/hare/strings/iter.ha:84-108. Hare's @test fn iter() uses prev +
// riter heavily; both are deferred (no `utf8.prev`). Rebuild forward-
// only here: empty / ASCII / 2-byte / 3-byte / 4-byte / done@EOI /
// mixed-width.
@test fn iter_empty_cases() void = {
let it: strings.iterator = strings.iter("");
match (strings.next(&it)) {
case let r: rune => { fail(); };
case utf8.done => void;
};
// Repeated next after done stays done.
match (strings.next(&it)) {
case let r: rune => { fail(); };
case utf8.done => void;
};
};
@test fn iter_ascii_cases() void = {
let it: strings.iterator = strings.iter("hi!");
match (strings.next(&it)) {
case let r: rune => { if (r != 'h') { fail(); }; };
case utf8.done => { fail(); };
};
match (strings.next(&it)) {
case let r: rune => { if (r != 'i') { fail(); }; };
case utf8.done => { fail(); };
};
match (strings.next(&it)) {
case let r: rune => { if (r != '!') { fail(); }; };
case utf8.done => { fail(); };
};
match (strings.next(&it)) {
case let r: rune => { fail(); };
case utf8.done => void;
};
};
@test fn iter_twobyte_cases() void = {
let it: strings.iterator = strings.iter("café");
let i: i32 = 0;
let expect: [4]rune;
expect[0] = 'c'; expect[1] = 'a'; expect[2] = 'f';
expect[3] = 0xE9u32: rune; // 'é' U+00E9
for (i < 4) {
match (strings.next(&it)) {
case let r: rune => { if (r != expect[i]) { fail(); }; };
case utf8.done => { fail(); };
};
i += 1;
};
match (strings.next(&it)) {
case let r: rune => { fail(); };
case utf8.done => void;
};
};
@test fn iter_threebyte_cases() void = {
let it: strings.iterator = strings.iter("こんにちは");
let i: i32 = 0;
let expect: [5]rune;
expect[0] = 0x3053u32: rune; // 'こ'
expect[1] = 0x3093u32: rune; // 'ん'
expect[2] = 0x306Bu32: rune; // 'に'
expect[3] = 0x3061u32: rune; // 'ち'
expect[4] = 0x306Fu32: rune; // 'は'
for (i < 5) {
match (strings.next(&it)) {
case let r: rune => { if (r != expect[i]) { fail(); }; };
case utf8.done => { fail(); };
};
i += 1;
};
match (strings.next(&it)) {
case let r: rune => { fail(); };
case utf8.done => void;
};
};
@test fn iter_fourbyte_cases() void = {
let it: strings.iterator = strings.iter("🦀rust");
let i: i32 = 0;
let expect: [5]rune;
expect[0] = 0x1F980u32: rune; // '🦀'
expect[1] = 'r'; expect[2] = 'u'; expect[3] = 's'; expect[4] = 't';
for (i < 5) {
match (strings.next(&it)) {
case let r: rune => { if (r != expect[i]) { fail(); }; };
case utf8.done => { fail(); };
};
i += 1;
};
match (strings.next(&it)) {
case let r: rune => { fail(); };
case utf8.done => void;
};
};
@test fn iter_mixed_cases() void = {
// "Hello, 世界! 🌍" — 1+1+1+1+1+1+1+3+3+1+1+4 = 12 runes,
// widths 1/3/4 mixed.
let it: strings.iterator = strings.iter("Hello, 世界! 🌍");
let i: i32 = 0;
let expect: [12]rune;
expect[0] = 'H'; expect[1] = 'e'; expect[2] = 'l'; expect[3] = 'l';
expect[4] = 'o'; expect[5] = ','; expect[6] = ' ';
expect[7] = 0x4E16u32: rune; // '世'
expect[8] = 0x754Cu32: rune; // '界'
expect[9] = '!'; expect[10] = ' ';
expect[11] = 0x1F30Du32: rune; // '🌍'
for (i < 12) {
match (strings.next(&it)) {
case let r: rune => { if (r != expect[i]) { fail(); }; };
case utf8.done => { fail(); };
};
i += 1;
};
match (strings.next(&it)) {
case let r: rune => { fail(); };
case utf8.done => void;
};
};
// ---- prev / riter / iterstr / slice / position -----------------------
// ref/hare/strings/iter.ha:84-127. The Hare @test fn iter body uses
// `s = riter(...)` mid-test to swap the iterator's direction; ww's
// sret-into-existing-slot path handles that fine (probed pre-port).
@test fn iter_prev_at_start_cases() void = {
let it: strings.iterator = strings.iter("hi");
match (strings.prev(&it)) {
case utf8.done => void;
case let r: rune => { fail(); };
};
};
@test fn iter_prev_ascii_cases() void = {
let it: strings.iterator = strings.iter("abc");
match (strings.next(&it)) {
case let r: rune => { if (r != 'a') { fail(); }; };
case utf8.done => { fail(); };
};
match (strings.prev(&it)) {
case let r: rune => { if (r != 'a') { fail(); }; };
case utf8.done => { fail(); };
};
match (strings.prev(&it)) {
case utf8.done => void;
case let r: rune => { fail(); };
};
};
// Mirror of ref/hare/strings/iter.ha:84-108 — `iter("こんにちは")`,
// step+back+iterstr+riter-reassign sequence.
@test fn iter_full_cases() void = {
let s: strings.iterator = strings.iter("こんにちは");
match (strings.prev(&s)) {
case utf8.done => void;
case let r: rune => { fail(); };
};
let expect1: [2]rune;
expect1[0] = 0x3053u32: rune; // 'こ'
expect1[1] = 0x3093u32: rune; // 'ん'
let i: i32 = 0;
for (i < 2) {
match (strings.next(&s)) {
case let r: rune => { if (r != expect1[i]) { fail(); }; };
case utf8.done => { fail(); };
};
i += 1;
};
if (!streq(strings.iterstr(&s), "にちは")) { fail(); };
match (strings.prev(&s)) {
case let r: rune => { if (r != 0x3093u32: rune) { fail(); }; }; // 'ん'
case utf8.done => { fail(); };
};
let expect2: [4]rune;
expect2[0] = 0x3093u32: rune; // 'ん'
expect2[1] = 0x306Bu32: rune; // 'に'
expect2[2] = 0x3061u32: rune; // 'ち'
expect2[3] = 0x306Fu32: rune; // 'は'
i = 0;
for (i < 4) {
match (strings.next(&s)) {
case let r: rune => { if (r != expect2[i]) { fail(); }; };
case utf8.done => { fail(); };
};
i += 1;
};
match (strings.next(&s)) {
case utf8.done => void;
case let r: rune => { fail(); };
};
// Repeated next-after-done stays done.
match (strings.next(&s)) {
case utf8.done => void;
case let r: rune => { fail(); };
};
match (strings.prev(&s)) {
case let r: rune => { if (r != 0x306Fu32: rune) { fail(); }; }; // 'は'
case utf8.done => { fail(); };
};
// Swap to a reverse iterator. sret-into-existing-slot.
s = strings.riter("にちは");
let expect3: [3]rune;
expect3[0] = 0x306Fu32: rune; // 'は'
expect3[1] = 0x3061u32: rune; // 'ち'
expect3[2] = 0x306Bu32: rune; // 'に'
i = 0;
for (i < 3) {
match (strings.next(&s)) {
case let r: rune => { if (r != expect3[i]) { fail(); }; };
case utf8.done => { fail(); };
};
i += 1;
};
match (strings.next(&s)) {
case utf8.done => void;
case let r: rune => { fail(); };
};
match (strings.prev(&s)) {
case let r: rune => { if (r != 0x306Bu32: rune) { fail(); }; }; // 'に'
case utf8.done => { fail(); };
};
};
@test fn iter_position_cases() void = {
let it: strings.iterator = strings.iter("café"); // 5 bytes: c-a-f-é(2)
if (strings.position(&it) != 0) { fail(); };
match (strings.next(&it)) { case let r: rune => void; case utf8.done => { fail(); }; };
if (strings.position(&it) != 1) { fail(); };
match (strings.next(&it)) { case let r: rune => void; case utf8.done => { fail(); }; };
match (strings.next(&it)) { case let r: rune => void; case utf8.done => { fail(); }; };
if (strings.position(&it) != 3) { fail(); };
match (strings.next(&it)) { case let r: rune => void; case utf8.done => { fail(); }; };
if (strings.position(&it) != 5) { fail(); };
};
// ref/hare/strings/iter.ha:110 @test fn slice. Hare uses `let t = s;`
// to copy the iterator; ww re-initialises t from the same source to
// stay in scope of #32 (local struct ident rhs already fixed) without
// reaching for #35's sibling latents.
@test fn iter_slice_cases() void = {
let s: strings.iterator = strings.iter("こんにちは");
let t: strings.iterator = strings.iter("こんにちは");
if (strings.slice(&s, &t).len != 0) { fail(); };
if (strings.slice(&t, &s).len != 0) { fail(); };
let i: i32 = 0;
for (i < 2) {
match (strings.next(&s)) {
case let r: rune => void;
case utf8.done => { fail(); };
};
match (strings.next(&t)) {
case let r: rune => void;
case utf8.done => { fail(); };
};
i += 1;
};
if (strings.slice(&s, &t).len != 0) { fail(); };
if (strings.slice(&t, &s).len != 0) { fail(); };
i = 0;
for (i < 3) {
match (strings.next(&t)) {
case let r: rune => void;
case utf8.done => { fail(); };
};
i += 1;
};
if (!streq(strings.slice(&s, &t), "にちは")) { fail(); };
i = 0;
for (i < 3) {
match (strings.next(&s)) {
case let r: rune => void;
case utf8.done => { fail(); };
};
i += 1;
};
if (strings.slice(&s, &t).len != 0) { fail(); };
if (strings.slice(&t, &s).len != 0) { fail(); };
};
@test fn iter_iterstr_reverse_cases() void = {
// Reverse iter: iterstr is `src[0:offs]` — bytes BEFORE the cursor
// (the still-to-be-walked region in reverse direction).
let rit: strings.iterator = strings.riter("hello");
if (!streq(strings.iterstr(&rit), "hello")) { fail(); };
match (strings.next(&rit)) { case let r: rune => void; case utf8.done => { fail(); }; };
if (!streq(strings.iterstr(&rit), "hell")) { fail(); };
match (strings.next(&rit)) { case let r: rune => void; case utf8.done => { fail(); }; };
match (strings.next(&rit)) { case let r: rune => void; case utf8.done => { fail(); }; };
if (!streq(strings.iterstr(&rit), "he")) { fail(); };
};
// ---- tokenize / rtokenize / peek_token / remaining_tokens -----------
// ref/hare/strings/tokenize.ha:110 @test fn tokenize. Row drivers
// mirror lib/bytes/bytestest expect_token / expect_done but compare
// str via streq.
fn expect_str_token(t: *strings.tokenizer, want: str) void = {
match (strings.peek_token(t)) {
case let p: str => { if (!streq(p, want)) { fail(); }; };
case bytes.done => { fail(); };
};
match (strings.next_token(t)) {
case let n: str => { if (!streq(n, want)) { fail(); }; };
case bytes.done => { fail(); };
};
};
fn expect_str_done(t: *strings.tokenizer) void = {
match (strings.peek_token(t)) {
case let p: str => { fail(); };
case bytes.done => void;
};
match (strings.next_token(t)) {
case let n: str => { fail(); };
case bytes.done => void;
};
};
@test fn tokenize_cases() void = {
// Hare vector — single-space delim. ref/hare/strings/tokenize.ha:112.
signalled = 1700;
let t: strings.tokenizer = strings.tokenize(
"Hello world! My name is Harriet.", " ");
expect_str_token(&t, "Hello");
expect_str_token(&t, "world!");
expect_str_token(&t, "My");
expect_str_token(&t, "name");
expect_str_token(&t, "is");
expect_str_token(&t, "Harriet.");
expect_str_done(&t);
// Multi-byte delim set — space + tab.
// ref/hare/strings/tokenize.ha:124.
signalled = 1701;
let t2: strings.tokenizer = strings.tokenize(
"/dev/sda1\t/ ext4 rw,relatime\t0 0", " \t");
expect_str_token(&t2, "/dev/sda1");
expect_str_token(&t2, "/");
expect_str_token(&t2, "ext4");
expect_str_token(&t2, "rw,relatime");
expect_str_token(&t2, "0");
expect_str_token(&t2, "0");
expect_str_done(&t2);
// Consecutive delimiters — empty interior tokens.
// ref/hare/strings/tokenize.ha:136.
signalled = 1702;
let t3: strings.tokenizer = strings.tokenize("hello world", " ");
expect_str_token(&t3, "hello");
expect_str_token(&t3, "");
expect_str_token(&t3, "");
expect_str_token(&t3, "");
expect_str_token(&t3, "world");
expect_str_done(&t3);
// Leading + trailing delimiters yield empty tokens.
// ref/hare/strings/tokenize.ha:147.
signalled = 1703;
let t4: strings.tokenizer = strings.tokenize(" hello world ", " ");
expect_str_token(&t4, "");
expect_str_token(&t4, "hello");
expect_str_token(&t4, "world");
expect_str_token(&t4, "");
expect_str_done(&t4);
// No delim hit — single full token.
signalled = 1704;
let t5: strings.tokenizer = strings.tokenize("abc", " ");
expect_str_token(&t5, "abc");
expect_str_done(&t5);
// Empty input — done immediately.
signalled = 1705;
let t6: strings.tokenizer = strings.tokenize("", " ");
expect_str_done(&t6);
};
@test fn rtokenize_cases() void = {
// Reverse direction — first next_token is the last token.
signalled = 1710;
let t: strings.tokenizer = strings.rtokenize(
"Hello world! My name is Harriet.", " ");
expect_str_token(&t, "Harriet.");
expect_str_token(&t, "is");
expect_str_token(&t, "name");
expect_str_token(&t, "My");
expect_str_token(&t, "world!");
expect_str_token(&t, "Hello");
expect_str_done(&t);
// Multi-byte delim set, reverse direction.
signalled = 1711;
let t2: strings.tokenizer = strings.rtokenize("a b\tc", " \t");
expect_str_token(&t2, "c");
expect_str_token(&t2, "b");
expect_str_token(&t2, "a");
expect_str_done(&t2);
// Empty input — done immediately.
signalled = 1712;
let t3: strings.tokenizer = strings.rtokenize("", " ");
expect_str_done(&t3);
};
@test fn peek_token_cases() void = {
// Two peeks without advancing return the same token.
signalled = 1720;
let t: strings.tokenizer = strings.tokenize("a b c", " ");
match (strings.peek_token(&t)) {
case let p: str => { if (!streq(p, "a")) { fail(); }; };
case bytes.done => { fail(); };
};
match (strings.peek_token(&t)) {
case let p: str => { if (!streq(p, "a")) { fail(); }; };
case bytes.done => { fail(); };
};
// Advance once — peek then returns "b".
signalled = 1721;
match (strings.next_token(&t)) {
case let n: str => { if (!streq(n, "a")) { fail(); }; };
case bytes.done => { fail(); };
};
match (strings.peek_token(&t)) {
case let p: str => { if (!streq(p, "b")) { fail(); }; };
case bytes.done => { fail(); };
};
// Empty input — peek is done.
signalled = 1722;
let t2: strings.tokenizer = strings.tokenize("", " ");
match (strings.peek_token(&t2)) {
case let p: str => { fail(); };
case bytes.done => void;
};
};
@test fn remaining_tokens_cases() void = {
// ref/hare/strings/tokenize.ha:157. After 2 next_tokens, remaining
// is "My name is Harriet.".
signalled = 1730;
let t: strings.tokenizer = strings.tokenize(
"Hello world! My name is Harriet.", " ");
match (strings.next_token(&t)) {
case let n: str => { if (!streq(n, "Hello")) { fail(); }; };
case bytes.done => { fail(); };
};
match (strings.next_token(&t)) {
case let n: str => { if (!streq(n, "world!")) { fail(); }; };
case bytes.done => { fail(); };
};
if (!streq(strings.remaining_tokens(&t), "My name is Harriet.")) {
fail();
};
// Fresh tokenizer — remaining_tokens is the whole input.
signalled = 1731;
let t2: strings.tokenizer = strings.tokenize("a b c", " ");
if (!streq(strings.remaining_tokens(&t2), "a b c")) { fail(); };
};
export fn main() i32 = {
signalled = 1; dup_cases();
signalled = 2; concat_cases();
signalled = 30; join_cases();
signalled = 3; hasprefix_cases();
signalled = 4; hassuffix_cases();
signalled = 5; contains_cases();
signalled = 6; byteindex_str_cases();
signalled = 7; byteindex_rune_cases();
signalled = 8; rbyteindex_cases();
signalled = 28; index_cases();
signalled = 29; rindex_cases();
signalled = 9; trimprefix_cases();
signalled = 10; trimsuffix_cases();
signalled = 11; ltrim_cases();
signalled = 12; rtrim_cases();
signalled = 13; trim_cases();
signalled = 14; compare_cases();
signalled = 15; utf8_roundtrip_cases();
signalled = 16; iter_empty_cases();
signalled = 17; iter_ascii_cases();
signalled = 18; iter_twobyte_cases();
signalled = 19; iter_threebyte_cases();
signalled = 20; iter_fourbyte_cases();
signalled = 21; iter_mixed_cases();
signalled = 22; iter_prev_at_start_cases();
signalled = 23; iter_prev_ascii_cases();
signalled = 24; iter_full_cases();
signalled = 25; iter_position_cases();
signalled = 26; iter_iterstr_reverse_cases();
signalled = 27; iter_slice_cases();
signalled = 31; tokenize_cases();
signalled = 32; rtokenize_cases();
signalled = 33; peek_token_cases();
signalled = 34; remaining_tokens_cases();
return 0;
};