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vm: very basic virtual machine

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This commit is contained in:
Alex Zenla
2023-11-14 23:44:10 -08:00
parent 8c48c93663
commit 041848c14e
92 changed files with 1652 additions and 243 deletions
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40
common/src/main/kotlin/gay/pizza/pork/common/ByteRepresentation.kt Normal file
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@ -0,0 +1,40 @@
package gay.pizza.pork.common
object ByteRepresentation {
fun encode(value: Int): ByteArray {
val buffer = ByteArray(4)
encode(value, buffer, 0)
return buffer
}
fun encode(value: Long): ByteArray {
val buffer = ByteArray(8)
encode(value, buffer, 0)
return buffer
}
fun encode(value: Double): ByteArray =
encode(value.toRawBits())
fun encode(value: Int, buffer: ByteArray, offset: Int) {
buffer[offset + 0] = (value shr 0).toByte()
buffer[offset + 1] = (value shr 8).toByte()
buffer[offset + 2] = (value shr 16).toByte()
buffer[offset + 3] = (value shr 24).toByte()
}
fun encode(value: Long, buffer: ByteArray, offset: Int) {
buffer[offset + 0] = (value shr 0).toByte()
buffer[offset + 1] = (value shr 8).toByte()
buffer[offset + 2] = (value shr 16).toByte()
buffer[offset + 3] = (value shr 24).toByte()
buffer[offset + 4] = (value shr 32).toByte()
buffer[offset + 5] = (value shr 40).toByte()
buffer[offset + 6] = (value shr 48).toByte()
buffer[offset + 7] = (value shr 56).toByte()
}
fun encode(value: Double, buffer: ByteArray, offset: Int) {
encode(value.toRawBits(), buffer, offset)
}
}