diff options
Diffstat (limited to 'src/main/java/ftbsc/lll/tools/StackTools.java')
| -rw-r--r-- | src/main/java/ftbsc/lll/tools/StackTools.java | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/src/main/java/ftbsc/lll/tools/StackTools.java b/src/main/java/ftbsc/lll/tools/StackTools.java index dbf1858..ef34155 100644 --- a/src/main/java/ftbsc/lll/tools/StackTools.java +++ b/src/main/java/ftbsc/lll/tools/StackTools.java @@ -1,9 +1,11 @@ package ftbsc.lll.tools; import ftbsc.lll.proxies.MethodProxy; +import ftbsc.lll.proxies.FieldProxy; import org.objectweb.asm.Opcodes; import org.objectweb.asm.tree.*; +import java.lang.reflect.Modifier; import java.util.Comparator; /** @@ -86,9 +88,46 @@ public class StackTools implements Opcodes { } /** - * Calls the given {@link MethodProxy} with the given opcode. + * Builds a node setting the given {@link FieldProxy} to the value currently + * on top of the stack. + * @implSpec if the field is not static, you are to load the containing + * object onto the stack the value you want to assign. + * @param f a {@link FieldProxy} representing the field to put. + * @return a {@link FieldInsnNode} representing the built node. + * @since 0.3.0 + */ + public static FieldInsnNode put(FieldProxy f) { + return new FieldInsnNode( + Modifier.isStatic(f.getModifiers()) ? PUTSTATIC : PUTFIELD, + f.getParent().replace('.', '/'), + f.getSrgName(), + f.getDescriptor() + ); + } + + /** + * Builds a node loading the given {@link FieldProxy} onto the stack. + * @implSpec if the field is not static, you are to load the containing + * object onto the stack before calling this. + * @param f a {@link FieldProxy} representing the field to load. + * @return a {@link FieldInsnNode} representing the built node. + * @since 0.3.0 + */ + public static FieldInsnNode get(FieldProxy f) { + return new FieldInsnNode( + Modifier.isStatic(f.getModifiers()) ? GETSTATIC : GETFIELD, + f.getParent().replace('.', '/'), + f.getSrgName(), + f.getDescriptor() + ); + } + + /** + * Builds a node calling the given {@link MethodProxy} with the given opcode. * @param m a {@link MethodProxy} representing the method to call. - * @return a {@link MethodInsnNode} representing the build node. + * @param opcode the opcode to use to call, must be one of INVOKEDYNAMIC, + * INVOKESPECIAL, INVOKEINTERFACE, INVOKESTATIC or INVOKEVIRTUAL. + * @return a {@link MethodInsnNode} representing the built node. * @since 0.3.0 */ public static MethodInsnNode call(MethodProxy m, int opcode) { |