| // Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| package com.android.tools.r8.experimental.graphinfo; |
| |
| import com.android.tools.r8.Keep; |
| import com.android.tools.r8.origin.Origin; |
| import com.android.tools.r8.position.Position; |
| import com.android.tools.r8.position.TextPosition; |
| import com.android.tools.r8.position.TextRange; |
| import com.android.tools.r8.shaking.ProguardKeepRule; |
| import com.android.tools.r8.shaking.ProguardKeepRuleBase; |
| import java.util.Collections; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| // Note: this could potentially be merged with ConditionalKeepRuleGraphNode |
| // and an empty precondition set. |
| @Keep |
| public final class KeepRuleGraphNode extends GraphNode { |
| |
| private final Origin origin; |
| private final Position position; |
| private final String content; |
| private final Set<GraphNode> preconditions; |
| |
| public KeepRuleGraphNode(ProguardKeepRule rule) { |
| this(rule, Collections.emptySet()); |
| } |
| |
| public KeepRuleGraphNode(ProguardKeepRuleBase rule, Set<GraphNode> preconditions) { |
| super(false); |
| assert rule != null; |
| assert preconditions != null; |
| origin = rule.getOrigin(); |
| position = rule.getPosition(); |
| content = rule.getSource(); |
| this.preconditions = preconditions; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (!(o instanceof KeepRuleGraphNode)) { |
| return false; |
| } |
| KeepRuleGraphNode other = (KeepRuleGraphNode) o; |
| return origin.equals(other.getOrigin()) |
| && position.equals(other.getPosition()) |
| && Objects.equals(content, other.getContent()) |
| && preconditions.equals(other.getPreconditions()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(origin, position, content, preconditions); |
| } |
| |
| public Origin getOrigin() { |
| return origin; |
| } |
| |
| public Position getPosition() { |
| return position; |
| } |
| |
| public String getContent() { |
| return content; |
| } |
| |
| public Set<GraphNode> getPreconditions() { |
| return preconditions; |
| } |
| |
| /** |
| * Get an identity string determining this keep rule. |
| * |
| * <p>The identity string is typically the source-file (if present) followed by the line number. |
| * {@code <keep-rule-file>:<keep-rule-start-line>:<keep-rule-start-column>}. |
| */ |
| @Override |
| public String toString() { |
| return (getOrigin() == Origin.unknown() ? getContent() : getOrigin()) |
| + ":" |
| + shortPositionInfo(getPosition()); |
| } |
| |
| private static String shortPositionInfo(Position position) { |
| if (position instanceof TextRange) { |
| TextPosition start = ((TextRange) position).getStart(); |
| return start.getLine() + ":" + start.getColumn(); |
| } |
| if (position instanceof TextPosition) { |
| TextPosition start = (TextPosition) position; |
| return start.getLine() + ":" + start.getColumn(); |
| } |
| return position.getDescription(); |
| } |
| } |