prog8/compiler/test/TestStringEncodings.kt

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Kotlin
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package prog8tests
import com.github.michaelbull.result.Ok
import com.github.michaelbull.result.expectError
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import com.github.michaelbull.result.getOrElse
import io.kotest.assertions.withClue
import io.kotest.core.spec.style.FunSpec
import io.kotest.matchers.shouldBe
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import io.kotest.matchers.shouldNotBe
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import prog8.ast.expressions.NumericLiteral
import prog8.ast.expressions.StringLiteral
import prog8.ast.statements.Assignment
import prog8.ast.statements.VarDecl
import prog8.code.core.Encoding
import prog8.code.core.unescape
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import prog8.code.target.C64Target
import prog8.code.target.Cx16Target
import prog8.code.target.Encoder
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import prog8.code.target.cbm.AtasciiEncoding
import prog8.code.target.cbm.IsoEncoding
import prog8.code.target.cbm.PetsciiEncoding
import prog8tests.helpers.ErrorReporterForTests
import prog8tests.helpers.compileText
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class TestStringEncodings: FunSpec({
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context("petscii") {
test("testZero") {
PetsciiEncoding.encodePetscii("\u0000", true) shouldBe Ok(listOf<UByte>(0u))
PetsciiEncoding.encodePetscii("\u0000", false) shouldBe Ok(listOf<UByte>(0u))
PetsciiEncoding.decodePetscii(listOf(0u), true) shouldBe Ok("\u0000")
PetsciiEncoding.decodePetscii(listOf(0u), false) shouldBe Ok("\u0000")
}
test("testLowercase") {
PetsciiEncoding.encodePetscii("hello WORLD 123 @!£", true) shouldBe
Ok(listOf<UByte>(72u, 69u, 76u, 76u, 79u, 32u, 0xd7u, 0xcfu, 0xd2u, 0xccu, 0xc4u, 32u, 49u, 50u, 51u, 32u, 64u, 33u, 0x5cu))
PetsciiEncoding.encodePetscii("\uf11a", true) shouldBe Ok(listOf<UByte>(0x12u)) // reverse vid
PetsciiEncoding.encodePetscii("", true) shouldBe Ok(listOf<UByte>(0xfau))
withClue("expect lowercase error fallback") {
PetsciiEncoding.encodePetscii("π", true) shouldBe Ok(listOf<UByte>(255u))
PetsciiEncoding.encodePetscii("", true) shouldBe Ok(listOf<UByte>(0xd3u))
}
PetsciiEncoding.decodePetscii(listOf(72u, 0xd7u, 0x5cu, 0xfau, 0x12u), true) shouldBe Ok("hW£✓\uF11A")
}
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test("testUppercase") {
PetsciiEncoding.encodePetscii("HELLO 123 @!£") shouldBe
Ok(listOf<UByte>(72u, 69u, 76u, 76u, 79u, 32u, 49u, 50u, 51u, 32u, 64u, 33u, 0x5cu))
PetsciiEncoding.encodePetscii("\uf11a") shouldBe Ok(listOf<UByte>(0x12u)) // reverse vid
PetsciiEncoding.encodePetscii("") shouldBe Ok(listOf<UByte>(0xd3u))
PetsciiEncoding.encodePetscii("π") shouldBe Ok(listOf<UByte>(0xffu))
withClue("expecting fallback") {
PetsciiEncoding.encodePetscii("") shouldBe Ok(listOf<UByte>(250u))
}
PetsciiEncoding.decodePetscii(listOf(72u, 0x5cu, 0xd3u, 0xffu)) shouldBe Ok("H£♥π")
}
test("testScreencodeLowercase") {
PetsciiEncoding.encodeScreencode("hello WORLD 123 @!£", true) shouldBe
Ok(listOf<UByte>(0x08u, 0x05u, 0x0cu, 0x0cu, 0x0fu, 0x20u, 0x57u, 0x4fu, 0x52u, 0x4cu, 0x44u, 0x20u, 0x31u, 0x32u, 0x33u, 0x20u, 0x00u, 0x21u, 0x1cu))
PetsciiEncoding.encodeScreencode("", true) shouldBe Ok(listOf<UByte>(0x7au))
withClue("expect fallback") {
PetsciiEncoding.encodeScreencode("", true) shouldBe Ok(listOf<UByte>(83u))
PetsciiEncoding.encodeScreencode("π", true) shouldBe Ok(listOf<UByte>(94u))
}
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PetsciiEncoding.decodeScreencode(listOf(0x08u, 0x57u, 0x1cu, 0x7au), true) shouldBe Ok("hW£✓")
}
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test("testScreencodeUppercase") {
PetsciiEncoding.encodeScreencode("WORLD 123 @!£") shouldBe
Ok(listOf<UByte>(0x17u, 0x0fu, 0x12u, 0x0cu, 0x04u, 0x20u, 0x31u, 0x32u, 0x33u, 0x20u, 0x00u, 0x21u, 0x1cu))
PetsciiEncoding.encodeScreencode("") shouldBe Ok(listOf<UByte>(0x53u))
PetsciiEncoding.encodeScreencode("π") shouldBe Ok(listOf<UByte>(0x5eu))
PetsciiEncoding.encodeScreencode("HELLO") shouldBe Ok(listOf<UByte>(8u, 5u, 12u, 12u, 15u))
withClue("expecting fallback") {
PetsciiEncoding.encodeScreencode("hello") shouldBe Ok(listOf<UByte>(8u, 5u, 12u, 12u, 15u))
PetsciiEncoding.encodeScreencode("") shouldBe Ok(listOf<UByte>(122u))
}
PetsciiEncoding.decodeScreencode(listOf(0x17u, 0x1cu, 0x53u, 0x5eu)) shouldBe Ok("W£♥π")
}
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test("testErrorCases") {
PetsciiEncoding.encodePetscii("~", true).expectError { "shouldn't be able to encode tilde" }
PetsciiEncoding.encodePetscii("~", false).expectError { "shouldn't be able to encode tilde" }
PetsciiEncoding.encodeScreencode("~", true).expectError { "shouldn't be able to encode tilde" }
PetsciiEncoding.encodeScreencode("~", false).expectError { "shouldn't be able to encode tilde" }
}
test("testReturn") {
PetsciiEncoding.encodePetscii("\r", true) shouldBe Ok(listOf<UByte>(13u))
PetsciiEncoding.encodePetscii("\r", false) shouldBe Ok(listOf<UByte>(13u))
PetsciiEncoding.encodePetscii("\n", true) shouldBe Ok(listOf<UByte>(13u))
PetsciiEncoding.encodePetscii("\n", false) shouldBe Ok(listOf<UByte>(13u))
PetsciiEncoding.decodePetscii(listOf(13u), false) shouldBe Ok("\n")
PetsciiEncoding.decodePetscii(listOf(13u), true) shouldBe Ok("\n")
PetsciiEncoding.decodePetscii(listOf(0x8du), false) shouldBe Ok("\r")
PetsciiEncoding.decodePetscii(listOf(0x8du), true) shouldBe Ok("\r")
}
test("testSpecialReplacements") {
fun encodeP(c: Char, lower: Boolean) = PetsciiEncoding.encodePetscii(c.toString(), lower).getOrElse { throw it }.single()
fun encodeS(c: Char, lower: Boolean) = PetsciiEncoding.encodeScreencode(c.toString(), lower).getOrElse { throw it }.single()
PetsciiEncoding.encodePetscii("`", false).expectError { "shouldn't have translation for backtick" }
PetsciiEncoding.encodePetscii("`", true).expectError { "shouldn't have translation for backtick" }
PetsciiEncoding.encodePetscii("~", false).expectError { "shouldn't have translation for tilde" }
PetsciiEncoding.encodePetscii("~", true).expectError { "shouldn't have translation for tilde" }
encodeP('^', false) shouldBe 94u
encodeP('^', true) shouldBe 94u
encodeS('^', false) shouldBe 30u
encodeS('^', true) shouldBe 30u
encodeP('_', false) shouldBe 228u
encodeP('_', true) shouldBe 228u
encodeS('_', false) shouldBe 100u
encodeS('_', true) shouldBe 100u
encodeP('{', false) shouldBe 243u
encodeP('{', true) shouldBe 243u
encodeS('{', false) shouldBe 115u
encodeS('{', true) shouldBe 115u
encodeP('}', false) shouldBe 235u
encodeP('}', true) shouldBe 235u
encodeS('}', false) shouldBe 107u
encodeS('}', true) shouldBe 107u
encodeP('|', false) shouldBe 221u
encodeP('|', true) shouldBe 221u
encodeS('|', false) shouldBe 93u
encodeS('|', true) shouldBe 93u
encodeP('\\', false) shouldBe 205u
encodeP('\\', true) shouldBe 205u
encodeS('\\', false) shouldBe 77u
encodeS('\\', true) shouldBe 77u
encodeP('\r', true) shouldBe 13u
encodeP('\r', false) shouldBe 13u
encodeP('\n', true) shouldBe 13u
encodeP('\n', false) shouldBe 13u
}
test("testBoxDrawingCharsEncoding") {
fun encodeP(c: Char, lower: Boolean) = PetsciiEncoding.encodePetscii(c.toString(), lower).getOrElse { throw it }.single()
fun encodeS(c: Char, lower: Boolean) = PetsciiEncoding.encodeScreencode(c.toString(), lower).getOrElse { throw it }.single()
// pipe char
encodeP('|', false) shouldBe 221u
encodeP('|', true) shouldBe 221u
encodeS('|', false) shouldBe 93u
encodeS('|', true) shouldBe 93u
// ... same as '│', 0x7D -> BOX DRAWINGS LIGHT VERTICAL
encodeP('│', false) shouldBe 221u
encodeP('│', true) shouldBe 221u
encodeS('│', false) shouldBe 93u
encodeS('│', true) shouldBe 93u
// underscore
encodeP('_', false) shouldBe 228u
encodeP('_', true) shouldBe 228u
encodeS('_', false) shouldBe 100u
encodeS('_', true) shouldBe 100u
// ... same as '▁', 0xE4 LOWER ONE EIGHTH BLOCK
encodeP('▁', false) shouldBe 228u
encodeP('▁', true) shouldBe 228u
encodeS('▁', false) shouldBe 100u
encodeS('▁', true) shouldBe 100u
// ─ 0xC0 -> BOX DRAWINGS LIGHT HORIZONTAL
encodeP('─', false) shouldBe 192u
encodeP('─', true) shouldBe 192u
encodeS('─', false) shouldBe 64u
encodeS('─', true) shouldBe 64u
// │ 0x62 -> BOX DRAWINGS LIGHT VERTICAL
encodeP('│', false) shouldBe 221u
encodeP('│', true) shouldBe 221u
encodeS('│', false) shouldBe 93u
encodeS('│', true) shouldBe 93u
}
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test("testBoxDrawingCharsDecoding") {
// ─ 0xC0 -> BOX DRAWINGS LIGHT HORIZONTAL
PetsciiEncoding.decodePetscii(listOf(195u), false).getOrElse { throw it }.single() shouldBe '\uf13b' //"BOX DRAWINGS LIGHT HORIZONTAL ONE EIGHTH UP (CUS)"
PetsciiEncoding.decodePetscii(listOf(195u), true).getOrElse { throw it }.single() shouldBe 'C'
PetsciiEncoding.decodePetscii(listOf(192u), false).getOrElse { throw it }.single() shouldBe '─'
PetsciiEncoding.decodePetscii(listOf(192u), true).getOrElse { throw it }.single() shouldBe '─'
PetsciiEncoding.decodeScreencode(listOf(67u), false).getOrElse { throw it }.single() shouldBe '\uf13b' //"BOX DRAWINGS LIGHT HORIZONTAL ONE EIGHTH UP (CUS)"
PetsciiEncoding.decodeScreencode(listOf(67u), true).getOrElse { throw it }.single() shouldBe 'C'
PetsciiEncoding.decodeScreencode(listOf(64u), false).getOrElse { throw it }.single() shouldBe '─'
PetsciiEncoding.decodeScreencode(listOf(64u), true).getOrElse { throw it }.single() shouldBe '─'
// │ 0x62 -> BOX DRAWINGS LIGHT VERTICAL
PetsciiEncoding.decodePetscii(listOf(125u), false).getOrElse { throw it }.single() shouldBe '│'
PetsciiEncoding.decodePetscii(listOf(125u), true).getOrElse { throw it }.single() shouldBe '│'
PetsciiEncoding.decodePetscii(listOf(221u), false).getOrElse { throw it }.single() shouldBe '│'
PetsciiEncoding.decodePetscii(listOf(221u), true).getOrElse { throw it }.single() shouldBe '│'
PetsciiEncoding.decodeScreencode(listOf(93u), false).getOrElse { throw it }.single() shouldBe '│'
PetsciiEncoding.decodeScreencode(listOf(93u), true).getOrElse { throw it }.single() shouldBe '│'
PetsciiEncoding.decodeScreencode(listOf(66u), false).getOrElse { throw it }.single() shouldBe '\uf13c' // "BOX DRAWINGS LIGHT VERTICAL ONE EIGHTH LEFT (CUS)"
PetsciiEncoding.decodeScreencode(listOf(66u), true).getOrElse { throw it }.single() shouldBe 'B'
}
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}
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context("atari") {
test("atascii encoding") {
AtasciiEncoding.encode("a") shouldBe Ok(listOf<UByte>(97u))
AtasciiEncoding.encode("A") shouldBe Ok(listOf<UByte>(65u))
AtasciiEncoding.encode("\n") shouldBe Ok(listOf<UByte>(155u))
}
test("atascii decoding") {
AtasciiEncoding.decode(listOf<UByte>(97u)) shouldBe Ok("a")
AtasciiEncoding.decode(listOf<UByte>(65u)) shouldBe Ok("A")
AtasciiEncoding.decode(listOf<UByte>(155u)) shouldBe Ok("\n")
}
}
context("iso") {
test("iso accepts iso-characters") {
val result = IsoEncoding.encode("a_~ëç")
result.getOrElse { throw it }.map {it.toInt()} shouldBe listOf(97, 95, 126, 235, 231)
}
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test("non-iso doesn't accept iso-characters") {
var result = PetsciiEncoding.encodePetscii("a_~ë")
result.expectError { "should not encode" }
result = PetsciiEncoding.encodeScreencode("a_~ë")
result.expectError { "should not encode" }
}
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}
test("special pass-through") {
val passthroughEscaped= """\x00\x1b\x99\xff"""
val passthrough = passthroughEscaped.unescape()
passthrough.length shouldBe 4
passthrough[0] shouldBe '\u8000'
passthrough[1] shouldBe '\u801b'
passthrough[2] shouldBe '\u8099'
passthrough[3] shouldBe '\u80ff'
var encoded = Encoder.encodeString(passthrough, Encoding.PETSCII)
encoded shouldBe listOf<UByte>(0u, 0x1bu, 0x99u, 0xffu)
encoded = Encoder.encodeString(passthrough, Encoding.ATASCII)
encoded shouldBe listOf<UByte>(0u, 0x1bu, 0x99u, 0xffu)
encoded = Encoder.encodeString(passthrough, Encoding.SCREENCODES)
encoded shouldBe listOf<UByte>(0u, 0x1bu, 0x99u, 0xffu)
encoded = Encoder.encodeString(passthrough, Encoding.ISO)
encoded shouldBe listOf<UByte>(0u, 0x1bu, 0x99u, 0xffu)
}
test("invalid encoding immediately errors the parser") {
val source="""
main {
str string5 = unicorns:"wrong"
ubyte char5 = unicorns:'?'
sub start() {
}
}"""
val errors = ErrorReporterForTests()
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compileText(C64Target(), false, source, errors, false) shouldBe null
errors.errors.size shouldBe 0
}
test("iso string encoding also on C64 compilationtarget") {
val source="""
main {
str string1 = "default"
str string2 = sc:"screencodes"
str string3 = iso:"iso"
str string4 = petscii:"petscii"
sub start() {
}
}"""
val errors = ErrorReporterForTests()
compileText(C64Target(), false, source, errors, writeAssembly = false) shouldNotBe null
errors.errors.size shouldBe 0
}
test("iso char encoding also on C64 compilationtarget") {
val source="""
main {
ubyte char1 = 'd'
ubyte char2 = sc:'s'
ubyte char3 = iso:'i'
ubyte char4 = petscii:'p'
sub start() {
}
}"""
val errors = ErrorReporterForTests()
compileText(C64Target(), false, source, errors, writeAssembly = false) shouldNotBe null
errors.errors.size shouldBe 0
}
test("all encodings supported for Cx16 target") {
val source="""
main {
str string1 = "default"
str string2 = sc:"screencodes"
str string3 = iso:"iso"
str string4 = petscii:"petscii"
ubyte char1 = 'd'
ubyte char2 = sc:'s'
ubyte char3 = iso:'i'
ubyte char4 = petscii:'p'
sub start() {
}
}"""
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compileText(Cx16Target(), false, source, writeAssembly = false) shouldNotBe null
}
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test("module level no default encoding thus petscii") {
val source="""
main {
str string1 = "default"
str string2 = petscii:"petscii"
ubyte char1 = 'd'
ubyte char2 = petscii:'p'
sub start() {
}
}"""
val result = compileText(Cx16Target(), false, source, writeAssembly = false)!!
val main = result.compilerAst.entrypoint.definingBlock
main.statements.size shouldBe 7
val string1 = (main.statements[0] as VarDecl).value as StringLiteral
string1.encoding shouldBe Encoding.PETSCII
string1.value shouldBe "default"
val string2 = (main.statements[1] as VarDecl).value as StringLiteral
string2.encoding shouldBe Encoding.PETSCII
string2.value shouldBe "petscii"
val char1 = (main.statements[3] as Assignment).value as NumericLiteral
char1.number shouldBe 68.0
val char2 = (main.statements[5] as Assignment).value as NumericLiteral
char2.number shouldBe 80.0
}
test("module level default encoding iso") {
val source="""
%encoding iso
main {
str string1 = "default"
str string2 = petscii:"petscii"
ubyte char1 = 'd'
ubyte char2 = petscii:'p'
sub start() {
}
}"""
val result = compileText(Cx16Target(), false, source, writeAssembly = false)!!
val main = result.compilerAst.entrypoint.definingBlock
main.statements.size shouldBe 7
val string1 = (main.statements[0] as VarDecl).value as StringLiteral
string1.encoding shouldBe Encoding.ISO
string1.value shouldBe "default"
val string2 = (main.statements[1] as VarDecl).value as StringLiteral
string2.encoding shouldBe Encoding.PETSCII
string2.value shouldBe "petscii"
val char1 = (main.statements[3] as Assignment).value as NumericLiteral
char1.number shouldBe 100.0
val char2 = (main.statements[5] as Assignment).value as NumericLiteral
char2.number shouldBe 80.0
}
})