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Multiplatform Kotlin LuaJ port (LUA interpreter)
/*******************************************************************************
* Copyright (c) 2015 Luaj.org. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.luaj.vm2.compiler
import org.luaj.vm2.LocVars
import org.luaj.vm2.Lua
import org.luaj.vm2.LuaError
import org.luaj.vm2.LuaString
import org.luaj.vm2.LuaValue
import org.luaj.vm2.Prototype
import org.luaj.vm2.Upvaldesc
import org.luaj.vm2.internal.*
import kotlin.jvm.*
import kotlin.math.*
/**
* Constants used by the LuaC compiler and related classes.
*
* @see LuaC
*
* @see FuncState
*/
open class Constants protected constructor() : Lua() {
companion object {
/** Maximum stack size of a luaj vm interpreter instance. */
@kotlin.jvm.JvmField val MAXSTACK = 250
@kotlin.jvm.JvmField val LUAI_MAXUPVAL = 0xff
@kotlin.jvm.JvmField val LUAI_MAXVARS = 200
@kotlin.jvm.JvmField val NO_REG = Lua.MAXARG_A
/* OpMode - basic instruction format */
@kotlin.jvm.JvmField val iABC = 0
@kotlin.jvm.JvmField val iABx = 1
@kotlin.jvm.JvmField val iAsBx = 2
/* OpArgMask */
@kotlin.jvm.JvmField val OpArgN = 0
/* argument is not used */
@kotlin.jvm.JvmField val OpArgU = 1
/* argument is used */
@kotlin.jvm.JvmField val OpArgR = 2
/* argument is a register or a jump offset */
@kotlin.jvm.JvmField val OpArgK = 3 /* argument is a constant or register/constant */
@JvmStatic
protected fun _assert(b: Boolean) {
if (!b)
throw LuaError("compiler assert failed")
}
fun SET_OPCODE(i: InstructionPtr, o: Int) {
i.set(i.get() and Lua.MASK_NOT_OP or (o shl Lua.POS_OP and Lua.MASK_OP))
}
fun SETARG_A(code: IntArray, index: Int, u: Int) {
code[index] = code[index] and Lua.MASK_NOT_A or (u shl Lua.POS_A and Lua.MASK_A)
}
fun SETARG_A(i: InstructionPtr, u: Int) {
i.set(i.get() and Lua.MASK_NOT_A or (u shl Lua.POS_A and Lua.MASK_A))
}
fun SETARG_B(i: InstructionPtr, u: Int) {
i.set(i.get() and Lua.MASK_NOT_B or (u shl Lua.POS_B and Lua.MASK_B))
}
fun SETARG_C(i: InstructionPtr, u: Int) {
i.set(i.get() and Lua.MASK_NOT_C or (u shl Lua.POS_C and Lua.MASK_C))
}
fun SETARG_Bx(i: InstructionPtr, u: Int) {
i.set(i.get() and Lua.MASK_NOT_Bx or (u shl Lua.POS_Bx and Lua.MASK_Bx))
}
fun SETARG_sBx(i: InstructionPtr, u: Int) {
SETARG_Bx(i, u + Lua.MAXARG_sBx)
}
fun CREATE_ABC(o: Int, a: Int, b: Int, c: Int): Int {
return o shl Lua.POS_OP and Lua.MASK_OP or
(a shl Lua.POS_A and Lua.MASK_A) or
(b shl Lua.POS_B and Lua.MASK_B) or
(c shl Lua.POS_C and Lua.MASK_C)
}
fun CREATE_ABx(o: Int, a: Int, bc: Int): Int {
return o shl Lua.POS_OP and Lua.MASK_OP or
(a shl Lua.POS_A and Lua.MASK_A) or
(bc shl Lua.POS_Bx and Lua.MASK_Bx)
}
// vector reallocation
fun realloc(v: Array?, n: Int): Array {
val a = arrayOfNulls(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a as Array
}
fun realloc(v: Array?, n: Int): Array {
val a = arrayOfNulls(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a as Array
}
fun realloc(v: Array?, n: Int): Array {
val a = arrayOfNulls(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a as Array
}
fun realloc(v: Array?, n: Int): Array {
val a = arrayOfNulls(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a as Array
}
fun realloc(v: Array?, n: Int): Array {
val a = arrayOfNulls(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a as Array
}
fun realloc(v: Array?, n: Int): Array {
val a = arrayOfNulls(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a as Array
}
fun grow(v: Array?, min_n: Int): Array {
return (if (v == null) arrayOfNulls(2) else if (v.size < min_n) realloc(v, v.size * 2) else v) as Array
}
fun realloc(v: Array?, n: Int): Array {
val a = arrayOfNulls(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a as Array
}
fun realloc(v: IntArray?, n: Int): IntArray {
val a = IntArray(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a
}
fun realloc(v: ByteArray?, n: Int): ByteArray {
val a = ByteArray(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a
}
fun realloc(v: CharArray?, n: Int): CharArray {
val a = CharArray(n)
if (v != null)
arraycopy(v, 0, a, 0, min(v.size, n))
return a
}
}
}