forked from openrs2/openrs2
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package dev.openrs2.bundler.transform; |
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import dev.openrs2.asm.InsnMatcher; |
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import dev.openrs2.asm.classpath.ClassPath; |
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import dev.openrs2.asm.classpath.Library; |
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import dev.openrs2.asm.transform.Transformer; |
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import org.objectweb.asm.Opcodes; |
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import org.objectweb.asm.tree.ClassNode; |
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import org.objectweb.asm.tree.FieldInsnNode; |
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import org.objectweb.asm.tree.JumpInsnNode; |
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import org.objectweb.asm.tree.LdcInsnNode; |
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import org.objectweb.asm.tree.MethodInsnNode; |
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import org.objectweb.asm.tree.MethodNode; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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public final class MacResizeTransformer extends Transformer { |
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private static final Logger logger = LoggerFactory.getLogger(MacResizeTransformer.class); |
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private static final InsnMatcher DETECT_MAC_MATCHER = InsnMatcher.compile("GETSTATIC LDC INVOKEVIRTUAL (IFEQ | IFNE)"); |
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private int branchesRemoved; |
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@Override |
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protected void preTransform(ClassPath classPath) { |
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branchesRemoved = 0; |
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} |
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@Override |
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protected boolean transformCode(ClassPath classPath, Library library, ClassNode clazz, MethodNode method) { |
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DETECT_MAC_MATCHER.match(method).forEach(match -> { |
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var getstatic = (FieldInsnNode) match.get(0); |
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if (getstatic.owner.equals("loader") || getstatic.owner.equals(clazz.name) || !getstatic.desc.equals("Ljava/lang/String;")) { |
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return; |
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} |
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var ldc = (LdcInsnNode) match.get(1); |
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if (!ldc.cst.equals("mac")) { |
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return; |
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} |
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var invokevirtual = (MethodInsnNode) match.get(2); |
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if (!invokevirtual.owner.equals("java/lang/String") || !invokevirtual.name.equals("startsWith") || !invokevirtual.desc.equals("(Ljava/lang/String;)Z")) { |
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return; |
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} |
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method.instructions.remove(getstatic); |
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method.instructions.remove(ldc); |
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method.instructions.remove(invokevirtual); |
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var branch = (JumpInsnNode) match.get(3); |
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if (branch.getOpcode() == Opcodes.IFEQ) { |
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branch.setOpcode(Opcodes.GOTO); |
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} else { |
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method.instructions.remove(branch); |
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} |
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branchesRemoved++; |
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}); |
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return false; |
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} |
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@Override |
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protected void postTransform(ClassPath classPath) { |
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logger.info("Removed {} branches to macOS-specific resize logic", branchesRemoved); |
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} |
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} |
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@ -0,0 +1,60 @@ |
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package dev.openrs2.bundler.transform |
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import com.github.michaelbull.logging.InlineLogger |
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import dev.openrs2.asm.InsnMatcher |
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import dev.openrs2.asm.classpath.ClassPath |
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import dev.openrs2.asm.classpath.Library |
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import dev.openrs2.asm.transform.Transformer |
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import org.objectweb.asm.Opcodes |
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import org.objectweb.asm.tree.* |
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class MacResizeTransformer : Transformer() { |
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private var branchesRemoved = 0 |
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override fun preTransform(classPath: ClassPath) { |
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branchesRemoved = 0 |
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} |
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override fun transformCode(classPath: ClassPath, library: Library, clazz: ClassNode, method: MethodNode): Boolean { |
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DETECT_MAC_MATCHER.match(method).forEach { |
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val getstatic = it[0] as FieldInsnNode |
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if (getstatic.owner == "loader" || getstatic.owner == clazz.name || getstatic.desc != "Ljava/lang/String;") { |
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return@forEach |
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} |
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val ldc = it[1] as LdcInsnNode |
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if (ldc.cst != "mac") { |
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return@forEach |
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} |
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val invokevirtual = it[2] as MethodInsnNode |
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if (invokevirtual.owner != "java/lang/String" || invokevirtual.name != "startsWith" || invokevirtual.desc != "(Ljava/lang/String;)Z") { |
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return@forEach |
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} |
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method.instructions.remove(getstatic) |
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method.instructions.remove(ldc) |
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method.instructions.remove(invokevirtual) |
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val branch = it[3] as JumpInsnNode |
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if (branch.opcode == Opcodes.IFEQ) { |
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branch.opcode = Opcodes.GOTO |
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} else { |
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method.instructions.remove(branch) |
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} |
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branchesRemoved++ |
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} |
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return false |
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} |
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override fun postTransform(classPath: ClassPath) { |
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logger.info { "Removed $branchesRemoved branches to macOS-specific resize logic" } |
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} |
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companion object { |
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private val logger = InlineLogger() |
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private val DETECT_MAC_MATCHER = InsnMatcher.compile("GETSTATIC LDC INVOKEVIRTUAL (IFEQ | IFNE)") |
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} |
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} |
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