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cache: add switch to interpreter

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Adam
2017-05-21 18:29:28 -04:00
parent 99d47b2053
commit 519e6d9f91
3 changed files with 66 additions and 0 deletions
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2
cache/src/main/java/net/runelite/cache/script/interpreter/InstructionHandlers.java vendored
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@@ -37,6 +37,7 @@ import net.runelite.cache.script.interpreter.instructions.Invoke;
import net.runelite.cache.script.interpreter.instructions.Jump;
import net.runelite.cache.script.interpreter.instructions.LoadInt;
import net.runelite.cache.script.interpreter.instructions.Return;
import net.runelite.cache.script.interpreter.instructions.Switch;
public class InstructionHandlers
{
@@ -59,6 +60,7 @@ public class InstructionHandlers
add(Opcodes.IF_ICMPGE, new If_ICmpGE());
add(Opcodes.INVOKE, new Invoke());
add(Opcodes.RETURN, new Return());
add(Opcodes.SWITCH, new Switch());
}
private static void add(int opcode, InstructionHandler handler)

2
cache/src/main/java/net/runelite/cache/script/interpreter/instructions/If.java vendored
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@@ -42,6 +42,8 @@ public abstract class If extends InstructionHandler
StackContext sctx2 = intStack.pop();
ctx.popsInt(sctx1, sctx2);
sctx1.poppedBy(ctx);
sctx2.poppedBy(ctx);
Frame dup = frame.dup();
dup.jump(iop);

62
cache/src/main/java/net/runelite/cache/script/interpreter/instructions/Switch.java vendored Normal file
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@@ -0,0 +1,62 @@
/*
* Copyright (c) 2017, Adam <Adam@sigterm.info>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package net.runelite.cache.script.interpreter.instructions;
import java.util.Map;
import net.runelite.cache.definitions.ScriptDefinition;
import net.runelite.cache.script.interpreter.Frame;
import net.runelite.cache.script.interpreter.InstructionContext;
import net.runelite.cache.script.interpreter.InstructionHandler;
import net.runelite.cache.script.interpreter.ScriptInstruction;
import net.runelite.cache.script.interpreter.Stack;
import net.runelite.cache.script.interpreter.StackContext;
public class Switch extends InstructionHandler
{
@Override
public void execute(Frame frame, InstructionContext ctx)
{
Stack intStack = frame.getIntStack();
ScriptInstruction scriptInstruction = ctx.getScriptInstruction();
ScriptDefinition script = frame.getScript();
int switchTableIndex = scriptInstruction.getIop();
// value -> pc
Map<Integer, Integer> switchTable = script.getSwitches()[switchTableIndex];
// pop value off stack
StackContext sctx = intStack.pop();
ctx.popsInt(sctx);
sctx.poppedBy(ctx);
// jump to targets
for (int target : switchTable.values())
{
Frame dup = frame.dup();
dup.jump(target);
}
}
}