Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
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48 lines
1.6 KiB
48 lines
1.6 KiB
package dev.openrs2.deob.ast.transform
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import com.github.javaparser.ast.CompilationUnit
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import com.github.javaparser.ast.expr.BinaryExpr
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import com.github.javaparser.ast.expr.Expression
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import com.github.javaparser.ast.expr.IntegerLiteralExpr
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import com.github.javaparser.ast.expr.LongLiteralExpr
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import dev.openrs2.deob.ast.Library
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import dev.openrs2.deob.ast.LibraryGroup
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import dev.openrs2.deob.ast.util.checkedAsInt
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import dev.openrs2.deob.ast.util.checkedAsLong
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import dev.openrs2.deob.ast.util.toHexLiteralExpr
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import dev.openrs2.deob.ast.util.walk
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class HexLiteralTransformer : Transformer() {
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override fun transformUnit(group: LibraryGroup, library: Library, unit: CompilationUnit) {
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unit.walk { expr: BinaryExpr ->
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if (expr.operator in SHIFT_OPS) {
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convertToHex(expr.left)
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}
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if (expr.operator in BITWISE_OPS) {
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convertToHex(expr.left)
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convertToHex(expr.right)
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}
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}
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}
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private fun convertToHex(expr: Expression) {
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when (expr) {
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is IntegerLiteralExpr -> expr.replace(expr.checkedAsInt().toHexLiteralExpr())
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is LongLiteralExpr -> expr.replace(expr.checkedAsLong().toHexLiteralExpr())
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}
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}
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private companion object {
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private val SHIFT_OPS = setOf(
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BinaryExpr.Operator.LEFT_SHIFT,
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BinaryExpr.Operator.SIGNED_RIGHT_SHIFT,
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BinaryExpr.Operator.UNSIGNED_RIGHT_SHIFT
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)
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private val BITWISE_OPS = setOf(
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BinaryExpr.Operator.BINARY_AND,
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BinaryExpr.Operator.BINARY_OR,
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BinaryExpr.Operator.XOR
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)
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}
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}
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