1 files changed, 0 insertions, 250 deletions
diff --git a/src/main/java/ftbsc/lll/tools/PatternMatcher.java b/src/main/java/ftbsc/lll/tools/PatternMatcher.java
deleted file mode 100644
index fff84db..0000000
--- a/src/main/java/ftbsc/lll/tools/PatternMatcher.java
+++ /dev/null
@@ -1,250 +0,0 @@
-package ftbsc.lll.tools;
-
-import ftbsc.lll.exceptions.PatternNotFoundException;
-import org.objectweb.asm.tree.AbstractInsnNode;
-import org.objectweb.asm.tree.MethodNode;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.function.Predicate;
-
-/**
- * Describes a pattern to match on a list of ASM instructions.
- */
-public class PatternMatcher {
-	/**
-	 * The list of predicates to match.
-	 */
-	private final List<Predicate<AbstractInsnNode>> predicates;
-
-	/**
-	 * Whether pattern search should be done from the end.
-	 */
-	private final boolean reverse;
-
-	/**
-	 * Patterns flagged with this ignore labels.
-	 */
-	private final boolean ignoreLabels;
-
-	/**
-	 * Patterns flagged with this ignore FRAME instructions.
-	 */
-	private final boolean ignoreFrames;
-
-	/**
-	 * Patterns flagged with this ignore LINENUMBER instructions.
-	 */
-	private final boolean ignoreLineNumbers;
-
-	/**
-	 * Private constructor because a PatternMatcher should only ever be initialized
-	 * through the builder.
-	 * @param predicates the list of predicates to match
-	 * @param reverse search direction
-	 * @param ignoreLabels whether LABEL instructions should be ignored
-	 * @param ignoreFrames whether FRAME instructions should be ignored
-	 * @param ignoreLineNumbers whether LINENUMBER instructions should be ignored
-	 */
-	private PatternMatcher(List<Predicate<AbstractInsnNode>> predicates, boolean reverse,
-	                       boolean ignoreLabels, boolean ignoreFrames, boolean ignoreLineNumbers) {
-		this.predicates = predicates;
-		this.reverse = reverse;
-		this.ignoreLabels = ignoreLabels;
-		this.ignoreFrames = ignoreFrames;
-		this.ignoreLineNumbers = ignoreLineNumbers;
-	}
-
-	/**
-	 * @return the Builder object for this {@link PatternMatcher}
-	 */
-	public static Builder builder() {
-		return new Builder();
-	}
-
-	/**
-	 * Tries to match the given pattern on a given {@link MethodNode}.
-	 * @param node the {@link MethodNode} to search
-	 * @return the InsnSequence object representing the matched pattern
-	 */
-	public InsnSequence find(MethodNode node) {
-		return find(reverse ? node.instructions.getLast() : node.instructions.getFirst());
-	}
-
-	/**
-	 * Tries to match the given pattern starting from a given node.
-	 * @param node the node to start the search on
-	 * @return the {@link InsnSequence} object representing the matched pattern
-	 */
-	public InsnSequence find(AbstractInsnNode node) {
-		if(node != null) {
-			AbstractInsnNode first, last;
-			for(AbstractInsnNode cur = node; cur != null; cur = reverse ? cur.getPrevious() : cur.getNext()) {
-				if(predicates.size() == 0) return new InsnSequence(cur); //match whatever
-				first = cur;
-				last = cur;
-				for(int match = 0; last != null && match < predicates.size(); last = reverse ? last.getPrevious() : last.getNext()) {
-					if(match != 0) {
-						if(ignoreLabels && last.getType() == AbstractInsnNode.LABEL) continue;
-						if(ignoreFrames && last.getType() == AbstractInsnNode.FRAME) continue;
-						if(ignoreLineNumbers && last.getType() == AbstractInsnNode.LINE) continue;
-					}
-					if(!predicates.get(match).test(last)) break;
-					if(match == predicates.size() - 1) {
-						if(reverse) return new InsnSequence(last, first); //we are matching backwards
-						else return new InsnSequence(first, last);
-					} else match++;
-				}
-			}
-		}
-		throw new PatternNotFoundException("Failed to find pattern!");
-	}
-
-	/**
-	 * The Builder object for {@link PatternMatcher}.
-	 */
-	public static class Builder {
-
-		/**
-		 * List of predicates the pattern has to match.
-		 */
-		private final List<Predicate<AbstractInsnNode>> predicates = new ArrayList<>();
-
-		/**
-		 * Whether the pattern matching should proceed in reversed order.
-		 */
-		private boolean reverse = false;
-
-		/**
-		 * Patterns flagged with this ignore labels.
-		 */
-		private boolean ignoreLabels = false;
-
-		/**
-		 * Patterns flagged with this ignore FRAME instructions.
-		 */
-		private boolean ignoreFrames = false;
-
-		/**
-		 * Patterns flagged with this ignore LINENUMBER instructions.
-		 */
-		private boolean ignoreLineNumbers = false;
-
-		/**
-		 * Builds the pattern defined so far.
-		 * @return the built {@link PatternMatcher}
-		 */
-		public PatternMatcher build() {
-			return new PatternMatcher(predicates, reverse, ignoreLabels, ignoreFrames, ignoreLineNumbers);
-		}
-
-		/**
-		 * Sets the pattern to match starting from the end.
-		 * @return the builder's state after the operation
-		 */
-		public Builder reverse() {
-			this.reverse = true;
-			return this;
-		}
-
-		/**
-		 * Adds a custom predicate to the list. Also used internally.
-		 * @param predicate the predicate to add
-		 * @return the builder's state after the operation
-		 */
-		public Builder check(Predicate<AbstractInsnNode> predicate) {
-			predicates.add(predicate);
-			return this;
-		}
-
-		/**
-		 * Wildcard, matches any kind of node.
-		 * @return the builder's state after the operation
-		 */
-		public Builder any() {
-			return check(i -> true);
-		}
-
-		/**
-		 * Matches a specific opcode.
-		 * @param opcode opcode to match
-		 * @return the builder's state after the operation
-		 */
-		public Builder opcode(int opcode) {
-			return check(i -> i.getOpcode() == opcode);
-		}
-
-		/**
-		 * Matches a list of opcodes.
-		 * @param opcodes list of opcodes to match
-		 * @return the builder's state after the operation
-		 */
-		public Builder opcodes(int... opcodes) {
-			Builder res = this;
-			for(int o : opcodes)
-				res = opcode(o);
-			return res;
-		}
-
-		/**
-		 * Matches a method invokation of any kind: one of INVOKEVIRTUAL,
-		 * INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
-		 * @return the builder's state after the operation
-		 */
-		public Builder method() {
-			return check(i -> i.getType() == AbstractInsnNode.METHOD_INSN);
-		}
-
-		/**
-		 * Matches a field invokation of any kind: one of GETSTATIC, PUTSTATIC,
-		 * GETFIELD or PUTFIELD.
-		 * @return the builder's state after the operation
-		 */
-		public Builder field() {
-			return check(i -> i.getType() == AbstractInsnNode.FIELD_INSN);
-		}
-
-		/**
-		 * Matches any kind of jump instruction.
-		 * @return the builder's state after the operation
-		 */
-		public Builder jump() {
-			return check(i -> i.getType() == AbstractInsnNode.JUMP_INSN);
-		}
-
-		/**
-		 * Matches any kind of label.
-		 * @return the builder's state after the operation
-		 */
-		public Builder label() {
-			return check(i -> i.getType() == AbstractInsnNode.LABEL);
-		}
-
-		/**
-		 * Tells the pattern matcher to ignore LABEL instructions.
-		 * @return the builder's state after the operation
-		 */
-		public Builder ignoreLabels() {
-			this.ignoreLabels = true;
-			return this;
-		}
-
-		/**
-		 * Tells the pattern matcher to ignore FRAME instructions.
-		 * @return the builder's state after the operation
-		 */
-		public Builder ignoreFrames() {
-			this.ignoreFrames = true;
-			return this;
-		}
-
-		/**
-		 * Tells the pattern matcher to ignore LINENUMBER instructions.
-		 * @return the builder's state after the operation
-		 */
-		public Builder ignoreLineNumbers() {
-			this.ignoreLineNumbers = true;
-			return this;
-		}
-	}
-}