package parser

import (
	"testing"
)

func TestInteger(t *testing.T) {
	for _, test := range []parseTest{
		{``, []string{`Error: unexpected end of file (expected a number) at start of file`}},
		// Decimal
		{`0`, []string{`integer(0)`}},
		{`+0`, []string{`integer(0)`}},
		{`-0`, []string{`integer(0)`}},
		{`1`, []string{`integer(1)`}},
		{`42`, []string{`integer(42)`}},
		{`+99`, []string{`integer(99)`}},
		{`-17`, []string{`integer(-17)`}},
		{`1234`, []string{`integer(1234)`}},
		{`_`, []string{`Error: unexpected input (expected a number) at start of file`}},
		{`1_`, []string{`integer(1)`, `Error: unexpected input (expected end of file) at line 1, column 2`}},
		{`1_000`, []string{`integer(1000)`}},
		{`5_349_221`, []string{`integer(5349221)`}},
		{`1_2_3_4_5`, []string{`integer(12345)`}},
		{`9_223_372_036_854_775_807`, []string{`integer(9223372036854775807)`}},
		{`9_223_372_036_854_775_808`, []string{
			`Panic: Handler error: MakeInt64Token cannot handle input "9223372036854775808": ` +
				`strconv.ParseInt: parsing "9223372036854775808": value out of range (only use a ` +
				`type conversion token maker, when the input has been validated on beforehand)`}},
		{`-9_223_372_036_854_775_808`, []string{`integer(-9223372036854775808)`}},
		// TODO make the use of the same kind of handling for panics and for errors between parsekit and TOML.
		{`-9_223_372_036_854_775_809`, []string{
			`Panic: Handler error: MakeInt64Token cannot handle input "-9223372036854775809": ` +
				`strconv.ParseInt: parsing "-9223372036854775809": value out of range (only use a ` +
				`type conversion token maker, when the input has been validated on beforehand)`}},
		// Hexadecimal
		{`0x0`, []string{`integer(0)`}},
		{`0x1`, []string{`integer(1)`}},
		{`0x01`, []string{`integer(1)`}},
		{`0x00fF`, []string{`integer(255)`}},
		{`0xf_f`, []string{`integer(255)`}},
		{`0x0_0_f_f`, []string{`integer(255)`}},
		{`0xdead_beef`, []string{`integer(3735928559)`}},
		{`0xgood_beef`, []string{`integer(0)`, `Error: unexpected input (expected end of file) at line 1, column 2`}},
		{`0x7FFFFFFFFFFFFFFF`, []string{`integer(9223372036854775807)`}},
		{`0x8000000000000000`, []string{
			`Error: Cannot parse value 0x8000000000000000: strconv.ParseInt: parsing "8000000000000000": ` +
				`value out of range at line 1, column 19`}},
		//Octal
		{`0o0`, []string{`integer(0)`}},
		{`0o1`, []string{`integer(1)`}},
		{`0o01`, []string{`integer(1)`}},
		{`0o10`, []string{`integer(8)`}},
		{`0o1_6`, []string{`integer(14)`}},
		{`0o0_0_1_1_1`, []string{`integer(73)`}},
		{`0o9`, []string{`integer(0)`, `Error: unexpected input (expected end of file) at line 1, column 2`}},
		{`0o777777777777777777777`, []string{`integer(9223372036854775807)`}},
		{`0o1000000000000000000000`, []string{
			`Error: Cannot parse value 0o1000000000000000000000: strconv.ParseInt: parsing "1000000000000000000000": ` +
				`value out of range at line 1, column 25`}},
		// Binary
		{`0b0`, []string{`integer(0)`}},
		{`0b1`, []string{`integer(1)`}},
		{`0b01`, []string{`integer(1)`}},
		{`0b10`, []string{`integer(2)`}},
		{`0b0100`, []string{`integer(4)`}},
		{`0b00001000`, []string{`integer(8)`}},
		{`0b0001_0000`, []string{`integer(16)`}},
		{`0b9`, []string{`integer(0)`, `Error: unexpected input (expected end of file) at line 1, column 2`}},
		{`0b1_1_0_1_1`, []string{`integer(27)`}},
		{`0b11111111_11111111`, []string{`integer(65535)`}},
		{`0b01111111_11111111_11111111_11111111_11111111_11111111_11111111_11111111`, []string{`integer(9223372036854775807)`}},
		{`0b10000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000`, []string{
			`Error: Cannot parse value 0b1000000000000000000000000000000000000000000000000000000000000000: ` +
				`strconv.ParseInt: parsing "1000000000000000000000000000000000000000000000000000000000000000": ` +
				`value out of range at line 1, column 74`}},
	} {
		p := &parser{}
		testParseHandler(t, p, p.startNumber, test)
	}
}

func TestFloat(t *testing.T) {
	for _, test := range []parseTest{
		{``, []string{`Error: unexpected end of file (expected a number) at start of file`}},
		{`0.0`, []string{`float(0)`}},
		{`+0.0`, []string{`float(0)`}},
		{`-0.0`, []string{`float(-0)`}},
		{`+1.0`, []string{`float(1)`}},
		{`3.1415`, []string{`float(3.1415)`}},
		{`-0.01`, []string{`float(-0.01)`}},
		{`5e+22`, []string{`float(5e+22)`}},
		{`1E6`, []string{`float(1e+06)`}},
		{`-2E-2`, []string{`float(-0.02)`}},
		{`6.626e-34`, []string{`float(6.626e-34)`}},
		{`224_617.445_991_228`, []string{`float(224617.445991228)`}},
		{`12_345.111_222e+1_2_3`, []string{`float(1.2345111222e+127)`}},
		{`+nan`, []string{`float(NaN)`}},
		{`-nan`, []string{`float(NaN)`}},
		{`nan`, []string{`float(NaN)`}},
		{`inf`, []string{`float(+Inf)`}},
		{`+inf`, []string{`float(+Inf)`}},
		{`-inf`, []string{`float(-Inf)`}},
	} {
		p := &parser{}
		testParseHandler(t, p, p.startNumber, test)
	}
}