// Verbatim port of ref/hare/strconv/stoi.ha:56-86 (stoi/stoi_bases) and
// stou.ha:116-138 (stou/stou_bases). Hare's strconv integer tests are
// flat assert SEQUENCES, not row-array tables — mirrored here as inline
// per-case checks (feedback_test_match_hare_source: inline @test-fn for
// verbatim ports). The leading id arg to each check helper is retained
// to keep the rows 1:1 but is now inert (signalled plumbing removed, task #5).
//
// Hex/oct/bin expected values are written in decimal (ww has no 0x/0o/0b
// literal form for the expectation side); the original Hare radix form
// is noted inline.

package strconv_test;

import strconv;


fn cki(id: i32, s: str, b: strconv.base, want: i64) void = {
	match (strconv.stoi64(s, b)) {
	case let v: i64      => assert(!(v != want));
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => abort();
	};
};

fn cki_inv(id: i32, s: str, b: strconv.base, idx: i32) void = {
	match (strconv.stoi64(s, b)) {
	case let v: i64      => abort();
	case let e: strconv.invalid  => assert(!(e: i32 != idx));
	case let e: strconv.overflow => abort();
	};
};

fn cki_ovf(id: i32, s: str, b: strconv.base) void = {
	match (strconv.stoi64(s, b)) {
	case let v: i64      => abort();
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => { };
	};
};

fn cku(id: i32, s: str, b: strconv.base, want: u64) void = {
	match (strconv.stou64(s, b)) {
	case let v: u64      => assert(!(v != want));
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => abort();
	};
};

fn cku_inv(id: i32, s: str, b: strconv.base, idx: i32) void = {
	match (strconv.stou64(s, b)) {
	case let v: u64      => abort();
	case let e: strconv.invalid  => assert(!(e: i32 != idx));
	case let e: strconv.overflow => abort();
	};
};

fn cku_ovf(id: i32, s: str, b: strconv.base) void = {
	match (strconv.stou64(s, b)) {
	case let v: u64      => abort();
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => { };
	};
};

fn cki32_ovf(id: i32, s: str, b: strconv.base) void = {
	match (strconv.stoi32(s, b)) {
	case let v: i32      => abort();
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => { };
	};
};

fn cki32(id: i32, s: str, b: strconv.base, want: i32) void = {
	match (strconv.stoi32(s, b)) {
	case let v: i32      => assert(!(v != want));
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => abort();
	};
};

fn ck_int(id: i32, s: str, b: strconv.base, want: int) void = {
	match (strconv.stoi(s, b)) {
	case let v: int      => assert(!(v != want));
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => abort();
	};
};

fn ck_uint(id: i32, s: str, b: strconv.base, want: uint) void = {
	match (strconv.stou(s, b)) {
	case let v: uint     => assert(!(v != want));
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => abort();
	};
};

fn ck_size(id: i32, s: str, b: strconv.base, want: size) void = {
	match (strconv.stoz(s, b)) {
	case let v: size     => assert(!(v != want));
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => abort();
	};
};

fn ck_int_ovf(id: i32, s: str, b: strconv.base) void = {
	match (strconv.stoi(s, b)) {
	case let v: int      => abort();
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => { };
	};
};

fn ck_uint_ovf(id: i32, s: str, b: strconv.base) void = {
	match (strconv.stou(s, b)) {
	case let v: uint     => abort();
	case let e: strconv.invalid  => abort();
	case let e: strconv.overflow => { };
	};
};

// ref/hare/strconv/stoi.ha:56-79.
@test fn test_stoi64() void = {
	cki_inv(1, "",   strconv.base.DEC, 0);
	cki_inv(2, "abc", strconv.base.DEC, 0);
	cki_inv(3, "1a", strconv.base.DEC, 1);
	cki_inv(4, "+",  strconv.base.DEC, 1);
	cki_inv(5, "-+", strconv.base.DEC, 1);
	cki_inv(6, "-z", strconv.base.DEC, 1);

	cki_ovf(7, "9223372036854775808",  strconv.base.DEC);
	cki_ovf(8, "-9223372036854775809", strconv.base.DEC);
	// The last multiply wraps to a value larger than its prefix, so a
	// post-arithmetic `n < old` check misses this overflow.
	cki_ovf(19, "21000000000000000000", strconv.base.DEC);

	cki(9,  "0",  strconv.base.DEC, 0);
	cki(10, "1",  strconv.base.DEC, 1);
	cki(11, "+1", strconv.base.DEC, 1);
	cki(12, "-1", strconv.base.DEC, -1);
	cki(13, "9223372036854775807", strconv.base.DEC, 9223372036854775807i64);
	// I64_MIN. Spelled -I64_MAX-1 (Hare's own two's-complement identity,
	// stoi64 comment in stoi.ha:11) because the wwstage mis-lexes the
	// direct literal -9223372036854775808 (and types.I64_MIN) to 0 —
	// proj #245. The INPUT string is unaffected; stoi64 parses it to the
	// correct value on both stages. This isolates the parse test from #245.
	cki(14, "-9223372036854775808", strconv.base.DEC, -9223372036854775807i64 - 1i64);

	// width wrapper boundaries (ref/hare/strconv/stoi.ha:74-78).
	cki32_ovf(15, "2147483648",  strconv.base.DEC);
	cki32_ovf(16, "-2147483649", strconv.base.DEC);
	cki32(17, "2147483647",  strconv.base.DEC, 2147483647i32);
	cki32(18, "-2147483648", strconv.base.DEC, -2147483648i32);
};

// ref/hare/strconv/stoi.ha:81-86.
@test fn test_stoi64_bases() void = {
	cki(20, "-7f", strconv.base.HEX, -127i64);        // -0x7f
	cki(21, "7F",  strconv.base.HEX, 127i64);         //  0x7f
	cki(22, "37",  strconv.base.OCT, 31i64);          //  0o37
	cki(23, "-110101", strconv.base.BIN, -53i64);     // -0b110101
};

// ref/hare/strconv/stou.ha:116-130.
@test fn test_stou64() void = {
	cku_inv(30, "",   strconv.base.DEC, 0);
	cku_inv(31, "+",  strconv.base.DEC, 1);
	cku_inv(32, "+a", strconv.base.DEC, 1);
	cku_inv(33, "abc", strconv.base.DEC, 0);
	cku_inv(34, "1a", strconv.base.DEC, 1);

	cku_ovf(35, "18446744073709551616",  strconv.base.DEC);
	cku_ovf(36, "184467440737095516150", strconv.base.DEC);
	cku_ovf(37, "-1", strconv.base.DEC);
	cku_ovf(46, "21000000000000000000", strconv.base.DEC);

	cku(38, "0", strconv.base.DEC, 0u64);
	cku(39, "1", strconv.base.DEC, 1u64);
	cku(40, "18446744073709551615", strconv.base.DEC, 18446744073709551615u64);
};

// ref/hare/strconv/stou.ha:132-138.
@test fn test_stou64_bases() void = {
	cku(41, "f",  strconv.base.HEX_LOWER, 15u64);     // 0xf
	cku(42, "7f", strconv.base.HEX, 127u64);          // 0x7f
	cku(43, "7F", strconv.base.HEX, 127u64);          // 0x7f
	cku(44, "37", strconv.base.OCT, 31u64);           // 0o37
	cku(45, "110101", strconv.base.BIN, 53u64);       // 0b110101
};

// stoi / stou / stoz — int/uint/size machine-word wrappers
// (ref/hare/strconv/stoi.ha:53, stou.ha:107,113). ww's int/uint/size are
// 8B, so the iN/uN clamp is a no-op: the full i64/u64 range parses with
// no spurious overflow. That no-clamp fidelity is what these check.
@test fn test_stoi_stou_stoz() void = {
	ck_int(50, "0",  strconv.base.DEC, 0);
	ck_int(51, "-1", strconv.base.DEC, -1);
	ck_int(52, "9223372036854775807", strconv.base.DEC, 9223372036854775807i64: int); // I64_MAX fits int
	ck_int_ovf(53, "9223372036854775808",  strconv.base.DEC);
	ck_int_ovf(54, "-9223372036854775809", strconv.base.DEC);

	ck_uint(55, "0", strconv.base.DEC, 0u64: uint);
	ck_uint(56, "18446744073709551615", strconv.base.DEC, 18446744073709551615u64: uint); // U64_MAX fits uint
	ck_uint_ovf(57, "18446744073709551616", strconv.base.DEC);
	ck_uint_ovf(58, "-1", strconv.base.DEC);

	ck_size(59, "0", strconv.base.DEC, 0u64: size);
	ck_size(60, "18446744073709551615", strconv.base.DEC, 18446744073709551615u64: size); // U64_MAX fits size

	// bases route through the same parseint core.
	ck_int(61, "-7f", strconv.base.HEX, -127i64: int);          // -0x7f
	ck_uint(62, "110101", strconv.base.BIN, 53u64: uint);        // 0b110101
};

@test fn test_narrow_parse_boundaries() void = {
	match (strconv.stoi16("32767", strconv.base.DEC)) {
	case let v: i16 => assert(v == 32767i16);
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => abort();
	};
	match (strconv.stoi16("-32768", strconv.base.DEC)) {
	case let v: i16 => assert(v == -32768i16);
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => abort();
	};
	match (strconv.stoi16("32768", strconv.base.DEC)) {
	case let v: i16 => abort();
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => { };
	};
	match (strconv.stoi16("-32769", strconv.base.DEC)) {
	case let v: i16 => abort();
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => { };
	};

	match (strconv.stoi8("127", strconv.base.DEC)) {
	case let v: i8 => assert(v == 127i8);
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => abort();
	};
	match (strconv.stoi8("-128", strconv.base.DEC)) {
	case let v: i8 => assert(v == -128i8);
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => abort();
	};
	match (strconv.stoi8("128", strconv.base.DEC)) {
	case let v: i8 => abort();
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => { };
	};
	match (strconv.stoi8("-129", strconv.base.DEC)) {
	case let v: i8 => abort();
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => { };
	};

	match (strconv.stou16("65535", strconv.base.DEC)) {
	case let v: u16 => assert(v == 65535u16);
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => abort();
	};
	match (strconv.stou16("65536", strconv.base.DEC)) {
	case let v: u16 => abort();
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => { };
	};
	match (strconv.stou8("255", strconv.base.DEC)) {
	case let v: u8 => assert(v == 255u8);
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => abort();
	};
	match (strconv.stou8("256", strconv.base.DEC)) {
	case let v: u8 => abort();
	case let e: strconv.invalid => abort();
	case let e: strconv.overflow => { };
	};
};

@test fn test_strerror_static() void = {
	let inv: strconv.invalid = 0: strconv.invalid;
	let ie: strconv.error = inv;
	let ia: str = strconv.strerror(ie);
	let ib: str = strconv.strerror(ie);
	assert(ia.ptr == ib.ptr);
	assert(streq(ia, "input is not a valid number"));

	let ov: strconv.overflow;
	let oe: strconv.error = ov;
	let oa: str = strconv.strerror(oe);
	let ob: str = strconv.strerror(oe);
	assert(oa.ptr == ob.ptr);
	assert(streq(oa, "input number doesn't fit target type"));
};

// Verbatim ports of ref/hare/strconv/utos.ha:74-103 (utos/utos_bases) and
// itos.ha:54-87 (itos/itos_bases) — Hare's format tests are flat assert
// sequences too. Radix-literal inputs are written in DECIMAL (ww value
// side has no 0b/0o/0x form): 0b11010=26, 0o1234567=342391,
// 0x123456789ABCDEF=81985529216486895; the original radix is noted inline.

fn streq(a: str, b: str) bool = {
	if (a.len != b.len) { return false; };
	let k: i32 = 0;
	for (k < a.len) {
		if (a[k] != b[k]) { return false; };
		k += 1;
	};
	return true;
};

fn cks(id: i32, got: str, want: str) void = {
	assert(!(!streq(got, want)));
};

// ref/hare/strconv/utos.ha:74-83.
@test fn test_u64tos_bases() void = {
	cks(70, strconv.u64tos(26u64, strconv.base.BIN), "11010");                 // 0b11010
	cks(71, strconv.u64tos(342391u64, strconv.base.OCT), "1234567");           // 0o1234567
	cks(72, strconv.u64tos(123456789u64, strconv.base.DEC), "123456789");
	cks(73, strconv.u64tos(81985529216486895u64, strconv.base.HEX), "123456789ABCDEF");       // 0x123456789ABCDEF
	cks(74, strconv.u64tos(81985529216486895u64, strconv.base.HEX_UPPER), "123456789ABCDEF");
	cks(75, strconv.u64tos(81985529216486895u64, strconv.base.HEX_LOWER), "123456789abcdef");
	cks(76, strconv.u64tos(18446744073709551615u64, strconv.base.BIN),        // U64_MAX
		"1111111111111111111111111111111111111111111111111111111111111111");
};

// ref/hare/strconv/utos.ha:85-103.
@test fn test_u64tos() void = {
	cks(77, strconv.u64tos(1234u64, strconv.base.DEC), "1234");
	cks(78, strconv.u64tos(4321u64, strconv.base.DEC), "4321");
	cks(79, strconv.u64tos(0u64, strconv.base.DEC), "0");                      // U64_MIN
	cks(80, strconv.u64tos(18446744073709551615u64, strconv.base.DEC), "18446744073709551615"); // U64_MAX
};

// ref/hare/strconv/itos.ha:54-63.
@test fn test_i64tos_bases() void = {
	cks(81, strconv.i64tos(26i64, strconv.base.BIN), "11010");
	cks(82, strconv.i64tos(342391i64, strconv.base.OCT), "1234567");
	cks(83, strconv.i64tos(123456789i64, strconv.base.DEC), "123456789");
	cks(84, strconv.i64tos(81985529216486895i64, strconv.base.HEX), "123456789ABCDEF");
	cks(85, strconv.i64tos(81985529216486895i64, strconv.base.HEX_UPPER), "123456789ABCDEF");
	cks(86, strconv.i64tos(81985529216486895i64, strconv.base.HEX_LOWER), "123456789abcdef");
	// I64_MIN binary = '1' + 63 zeros, prefixed '-'. Spelled -I64_MAX-1
	// (proj #245: wwstage mis-lexes the direct 2^63 / types.I64_MIN literal).
	cks(87, strconv.i64tos(-9223372036854775807i64 - 1i64, strconv.base.BIN),
		"-1000000000000000000000000000000000000000000000000000000000000000");
};

// ref/hare/strconv/itos.ha:65-87.
@test fn test_i64tos() void = {
	cks(88, strconv.i64tos(1234i64, strconv.base.DEC), "1234");
	cks(89, strconv.i64tos(4321i64, strconv.base.DEC), "4321");
	cks(90, strconv.i64tos(-1337i64, strconv.base.DEC), "-1337");
	cks(91, strconv.i64tos(0i64, strconv.base.DEC), "0");
	cks(92, strconv.i64tos(9223372036854775807i64, strconv.base.DEC), "9223372036854775807"); // I64_MAX
	// drew probe-1: NEG-of-I64_MIN + i64→u64 reinterpret preserves the
	// two's-complement bit pattern. I64_MIN spelled -I64_MAX-1 (proj #245).
	cks(93, strconv.i64tos(-9223372036854775807i64 - 1i64, strconv.base.DEC),
		"-9223372036854775808");
};

// machine-word wrappers + width wrappers. ww int/uint/size/uintptr are
// all 8B, so the full i64/u64 range renders untruncated. ww-authored
// (Hare's wrappers are trivial aliases): itos.ha:37-52, utos.ha:44-72.
@test fn test_word_wrappers() void = {
	cks(94, strconv.itos(-1337, strconv.base.DEC), "-1337");
	cks(95, strconv.itos(9223372036854775807i64: int, strconv.base.DEC), "9223372036854775807");
	cks(96, strconv.utos(18446744073709551615u64: uint, strconv.base.DEC), "18446744073709551615");
	cks(97, strconv.ztos(255u64: size, strconv.base.HEX), "FF");
	cks(98, strconv.uptrtos(4096u64: uintptr, strconv.base.DEC), "4096");
	cks(99, strconv.i32tos(-2147483648i32, strconv.base.DEC), "-2147483648");
	cks(100, strconv.u8tos(255u8, strconv.base.HEX_LOWER), "ff");
};