1 files changed, 174 insertions, 0 deletions
diff --git a/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/attribute/LineNumberTableAttribute.java b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/attribute/LineNumberTableAttribute.java
new file mode 100644
index 0000000000..bc9dd4d60a
--- /dev/null
+++ b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/attribute/LineNumberTableAttribute.java
@@ -0,0 +1,174 @@
+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.classfile.attribute;
+
+import proguard.classfile.*;
+import proguard.classfile.attribute.visitor.*;
+
+/**
+ * This Attribute represents a line number table attribute.
+ *
+ * @author Eric Lafortune
+ */
+public class LineNumberTableAttribute extends Attribute
+{
+    public int              u2lineNumberTableLength;
+    public LineNumberInfo[] lineNumberTable;
+
+
+    /**
+     * Creates an uninitialized LineNumberTableAttribute.
+     */
+    public LineNumberTableAttribute()
+    {
+    }
+
+
+    /**
+     * Creates an initialized LineNumberTableAttribute.
+     */
+    public LineNumberTableAttribute(int              u2attributeNameIndex,
+                                    int              u2lineNumberTableLength,
+                                    LineNumberInfo[] lineNumberTable)
+    {
+        super(u2attributeNameIndex);
+
+        this.u2lineNumberTableLength = u2lineNumberTableLength;
+        this.lineNumberTable         = lineNumberTable;
+    }
+
+
+    /**
+     * Returns the line number corresponding to the given byte code program
+     * counter.
+     */
+    public int getLineNumber(int pc)
+    {
+        LineNumberInfo info = getLineNumberInfo(pc);
+
+        return info == null ? 0 : info.u2lineNumber;
+    }
+
+
+    /**
+     * Returns the source corresponding to the given byte code program
+     * counter.
+     */
+    public String getSource(int pc)
+    {
+        LineNumberInfo info = getLineNumberInfo(pc);
+
+        return info == null ? null : info.getSource();
+    }
+
+
+    /**
+     * Returns the line number info corresponding to the given byte code
+     * program counter.
+     */
+    public LineNumberInfo getLineNumberInfo(int pc)
+    {
+        for (int index = u2lineNumberTableLength-1; index >= 0; index--)
+        {
+            LineNumberInfo info = lineNumberTable[index];
+            if (pc >= info.u2startPC)
+            {
+                return info;
+            }
+        }
+
+        return u2lineNumberTableLength > 0 ?
+            lineNumberTable[0] :
+            null;
+    }
+
+
+    /**
+     * Returns the lowest line number with the default null source,
+     * or 0 if there aren't any such line numbers.
+     */
+    public int getLowestLineNumber()
+    {
+        int lowestLineNumber = Integer.MAX_VALUE;
+
+        for (int index = 0; index < u2lineNumberTableLength; index++)
+        {
+            LineNumberInfo info = lineNumberTable[index];
+            if (info.getSource() == null)
+            {
+                int lineNumber = info.u2lineNumber;
+                if (lineNumber < lowestLineNumber)
+                {
+                    lowestLineNumber = lineNumber;
+                }
+            }
+        }
+
+        return lowestLineNumber == Integer.MAX_VALUE ? 0 : lowestLineNumber;
+    }
+
+
+    /**
+     * Returns the highest line number with the default null source,
+     * or 0 if there aren't any such line numbers.
+     */
+    public int getHighestLineNumber()
+    {
+        int highestLineNumber = 0;
+
+        for (int index = 0; index < u2lineNumberTableLength; index++)
+        {
+            LineNumberInfo info = lineNumberTable[index];
+            if (info.getSource() == null)
+            {
+                int lineNumber = info.u2lineNumber;
+                if (lineNumber > highestLineNumber)
+                {
+                    highestLineNumber = lineNumber;
+                }
+            }
+        }
+
+        return highestLineNumber;
+    }
+
+
+    // Implementations for Attribute.
+
+    public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, AttributeVisitor attributeVisitor)
+    {
+        attributeVisitor.visitLineNumberTableAttribute(clazz, method, codeAttribute, this);
+    }
+
+
+    /**
+     * Applies the given visitor to all line numbers.
+     */
+    public void lineNumbersAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberInfoVisitor lineNumberInfoVisitor)
+    {
+        for (int index = 0; index < u2lineNumberTableLength; index++)
+        {
+            // We don't need double dispatching here, since there is only one
+            // type of LineNumberInfo.
+            lineNumberInfoVisitor.visitLineNumberInfo(clazz, method, codeAttribute, lineNumberTable[index]);
+        }
+    }
+}