// inttest — exercises lib/strconv integer parse: parseint / stoi64 /
// stou64 / the iN/uN width wrappers. Run with
// `out/bin/ww run lib/strconv/test/inttest.ww`. Same
// signalled-then-fail()-with-+10 pattern as decimaltest / bytestest:
// a non-zero exit code (signalled+10) pinpoints the failing case.
//
// 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). Each case sets `signalled` first so a failure's exit
// code identifies the exact assertion.
//
// Lives in lib/strconv/test/ (not lib/strconv/) so `import strconv`
// resolves to the lib/strconv DIRECTORY (pulls the full package), not
// the strconv.ww FILE — same rationale as 922_decimal_run.
//
// 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;

import strconv;
import os;

let signalled: i32 = 0;
fn fail() void = { os.exit(signalled + 10); };

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

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

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

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

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

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

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

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

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

	cki_ovf(7, "9223372036854775808",  base.DEC);
	cki_ovf(8, "-9223372036854775809", base.DEC);

	cki(9,  "0",  base.DEC, 0);
	cki(10, "1",  base.DEC, 1);
	cki(11, "+1", base.DEC, 1);
	cki(12, "-1", base.DEC, -1);
	cki(13, "9223372036854775807", 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", base.DEC, -9223372036854775807i64 - 1i64);

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

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

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

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

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

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

export fn main() i32 = {
	test_stoi64();
	test_stoi64_bases();
	test_stou64();
	test_stou64_bases();
	return 0;
};