1 cananian 1.1.2.1 // Code.java, created Tue Jan 25 23:41:07 2000 by cananian
2 cananian 1.1.2.1 // Copyright (C) 2000 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.1 package harpoon.IR.Assem;
5 cananian 1.1.2.1
6 kkz 1.1.2.6 import harpoon.Analysis.Maps.Derivation;
7 cananian 1.1.2.2 import harpoon.ClassFile.HClass;
8 cananian 1.1.2.2 import harpoon.ClassFile.HCode;
9 cananian 1.1.2.2 import harpoon.ClassFile.HCodeElement;
10 cananian 1.1.2.2 import harpoon.ClassFile.HMethod;
11 cananian 1.1.2.1 import harpoon.Backend.Generic.Frame;
12 cananian 1.1.2.2 import harpoon.Temp.Label;
13 cananian 1.1.2.2 import harpoon.Temp.Temp;
14 cananian 1.1.2.2 import harpoon.Temp.TempFactory;
15 cananian 1.1.2.2 import harpoon.Util.ArrayFactory;
16 cananian 1.1.2.2 import harpoon.Util.Util;
17 cananian 1.8 import net.cscott.jutil.GenericMultiMap;
18 cananian 1.7 import harpoon.Util.Collections.Graph;
19 cananian 1.8 import net.cscott.jutil.MultiMap;
20 cananian 1.8 import net.cscott.jutil.UnmodifiableIterator;
21 cananian 1.1.2.1
22 cananian 1.1.2.2 import java.io.BufferedReader;
23 cananian 1.1.2.2 import java.io.IOException;
24 cananian 1.1.2.2 import java.io.PrintWriter;
25 cananian 1.1.2.2 import java.io.StringReader;
26 cananian 1.7 import java.util.AbstractSet;
27 cananian 1.1.2.2 import java.util.Arrays;
28 cananian 1.6 import java.util.ConcurrentModificationException;
29 cananian 1.1.2.2 import java.util.HashSet;
30 cananian 1.1.2.2 import java.util.Iterator;
31 cananian 1.1.2.2 import java.util.List;
32 cananian 1.1.2.2 import java.util.NoSuchElementException;
33 cananian 1.1.2.2 import java.util.Set;
34 cananian 1.1.2.1 /**
35 cananian 1.1.2.1 * <code>IR.Assem.Code</code> is an abstract superclass of codeviews
36 cananian 1.1.2.1 * which use <code>Instr</code>s.
37 cananian 1.1.2.1 *
38 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
39 cananian 1.8 * @version $Id: Code.java,v 1.8 2004/02/08 01:55:08 cananian Exp $
40 cananian 1.1.2.1 */
41 cananian 1.7 public abstract class Code extends HCode<Instr>
42 cananian 1.7 implements Graph<Instr,InstrEdge> {
43 cananian 1.1.2.1 private static boolean DEBUG = true;
44 cananian 1.1.2.1
45 cananian 1.1.2.1 /** The method that this code view represents. */
46 cananian 1.1.2.1 protected HMethod parent;
47 cananian 1.1.2.1 /** The root Instr of the Instrs composing this code view. */
48 cananian 1.1.2.1 protected Instr instrs;
49 cananian 1.1.2.1 /** Instruction factory. */
50 cananian 1.1.2.1 protected final InstrFactory inf;
51 cananian 1.1.2.1 /** The Frame associated with this codeview. */
52 cananian 1.1.2.1 protected final Frame frame;
53 cananian 1.6 /** Keep track of modifications to this <code>Code</code> so that the
54 cananian 1.6 * <code>getElementsI()</code> <code>Iterator</code> can fail-fast. */
55 cananian 1.6 int modCount=0;
56 pnkfelix 1.1.2.4
57 pnkfelix 1.1.2.4 private InstrFactory newINF(final HMethod parent) {
58 pnkfelix 1.1.2.4 return newINF(parent, getName());
59 pnkfelix 1.1.2.4 }
60 pnkfelix 1.1.2.4
61 cananian 1.1.2.1 /** Creates a new <code>InstrFactory</code> for this codeview.
62 cananian 1.1.2.1 *
63 cananian 1.1.2.1 * @param parent The method which this codeview corresponds to.
64 pnkfelix 1.1.2.4 * @param codeName The String that would be returned by a call
65 pnkfelix 1.1.2.4 * to <code>Code.this.getName()</code>.
66 cananian 1.1.2.1 * @return Returns a new instruction factory for the scope
67 cananian 1.1.2.1 * of the parent method and this codeview.
68 cananian 1.1.2.1 */
69 pnkfelix 1.1.2.4 private InstrFactory newINF(final HMethod parent, String codeName) {
70 cananian 1.1.2.1 final String scope = parent.getDeclaringClass().getName() + "." +
71 pnkfelix 1.1.2.4 parent.getName() + parent.getDescriptor() + "/" + codeName;
72 cananian 1.1.2.1 return new InstrFactory() {
73 cananian 1.1.2.1 private final TempFactory tf = Temp.tempFactory(scope);
74 cananian 1.1.2.1 private int id = 0;
75 cananian 1.1.2.1 public TempFactory tempFactory() { return tf; }
76 cananian 1.3.2.2 public Code getParent() { return Code.this; }
77 cananian 1.1.2.1 public Frame getFrame() { return frame; }
78 cananian 1.1.2.1 public synchronized int getUniqueID() { return id++; }
79 cananian 1.1.2.1 };
80 pnkfelix 1.1.2.4 }
81 pnkfelix 1.1.2.4
82 pnkfelix 1.1.2.4 /** constructor. */
83 pnkfelix 1.1.2.4 protected Code(HMethod parent, Frame frame, String codeName) {
84 pnkfelix 1.1.2.4 this.parent = parent;
85 pnkfelix 1.1.2.4 this.instrs = null;
86 pnkfelix 1.1.2.4 this.inf = newINF(parent, codeName);
87 pnkfelix 1.1.2.4 this.frame = frame;
88 cananian 1.1.2.1 }
89 cananian 1.1.2.1
90 cananian 1.1.2.1 /** constructor. */
91 cananian 1.1.2.1 protected Code(HMethod parent, Frame frame) {
92 cananian 1.1.2.1 this.parent = parent;
93 cananian 1.1.2.1 this.instrs = null;
94 cananian 1.1.2.1 this.inf = newINF(parent);
95 cananian 1.1.2.1 this.frame = frame;
96 cananian 1.1.2.1 }
97 cananian 1.1.2.14
98 cananian 1.1.2.1 public HMethod getMethod() { return parent; }
99 cananian 1.3.2.2 public Instr getRootElement() { return instrs; }
100 cananian 1.3.2.2 public Instr[] getLeafElements() { return null; }
101 cananian 1.1.2.1
102 cananian 1.1.2.1 /** Returns an <code>Iterator</code> over the instructions in this
103 cananian 1.1.2.1 codeview.
104 cananian 1.1.2.1 *
105 cananian 1.1.2.1 * @return An iterator over the <code>Instr</code>s
106 cananian 1.1.2.1 * making up this code view. The root Instr is
107 cananian 1.1.2.1 * the first element in the iteration. */
108 cananian 1.3.2.2 public Iterator<Instr> getElementsI() {
109 cananian 1.3.2.2 return new UnmodifiableIterator<Instr>() {
110 cananian 1.6 // record # of modifications to enable fail-fast.
111 cananian 1.6 int modCount = Code.this.modCount;
112 cananian 1.6 // setup starting point.
113 cananian 1.3.2.2 Instr instr = getRootElement();
114 cananian 1.1.2.1 public boolean hasNext() { return (instr != null); }
115 cananian 1.3.2.2 public Instr next() {
116 cananian 1.6 if (modCount != Code.this.modCount)
117 cananian 1.6 throw new ConcurrentModificationException();
118 cananian 1.1.2.1 if (instr == null) throw new NoSuchElementException();
119 cananian 1.1.2.1 Instr r = instr;
120 cananian 1.1.2.1 instr = r.getNext();
121 cananian 1.1.2.1 return r;
122 cananian 1.1.2.1 }
123 cananian 1.1.2.1 };
124 cananian 1.1.2.1 }
125 cananian 1.1.2.1
126 cananian 1.1.2.1 /** Returns an array factory to create the instruction elements
127 cananian 1.1.2.1 * of this codeview.
128 cananian 1.1.2.1 *
129 cananian 1.1.2.1 * @return An ArrayFactory which produces Instrs.
130 cananian 1.1.2.1 */
131 cananian 1.3.2.2 public ArrayFactory<Instr> elementArrayFactory() {
132 cananian 1.1.2.1 return Instr.arrayFactory;
133 cananian 1.7 }
134 cananian 1.7
135 cananian 1.7 // Graph interface
136 cananian 1.7 public Set<Instr> nodes() {
137 cananian 1.7 final List<Instr> l = getElementsL();
138 cananian 1.7 return new AbstractSet<Instr>() {
139 cananian 1.7 public Iterator<Instr> iterator() { return l.iterator(); }
140 cananian 1.7 public int size() { return l.size(); }
141 cananian 1.7 };
142 cananian 1.1.2.1 }
143 cananian 1.1.2.1
144 cananian 1.1.2.1 /** Allows access to the InstrFactory used by this codeview.
145 cananian 1.1.2.1 *
146 cananian 1.1.2.1 * @return The InstrFactory used by this codeview.
147 cananian 1.1.2.1 */
148 cananian 1.1.2.1 public InstrFactory getInstrFactory() {
149 cananian 1.1.2.1 return inf;
150 cananian 1.1.2.1 }
151 cananian 1.1.2.1
152 cananian 1.1.2.1 public Frame getFrame() {
153 cananian 1.1.2.1 return frame;
154 pnkfelix 1.1.2.10 }
155 pnkfelix 1.1.2.10
156 pnkfelix 1.1.2.10 /** Prints the assembly instructions of <code>this</code> to
157 pnkfelix 1.1.2.13 System.out.
158 pnkfelix 1.1.2.10 @see Code#print(java.io.PrintWriter)
159 pnkfelix 1.1.2.10 */
160 pnkfelix 1.1.2.10 public void print() {
161 pnkfelix 1.1.2.10 print(new java.io.PrintWriter(System.out));
162 cananian 1.1.2.1 }
163 pnkfelix 1.1.2.13
164 pnkfelix 1.1.2.13 /** Prints the assembly instructions of <code>this</code> to
165 pnkfelix 1.1.2.13 <code>pw</code>. Default implementation is just a wrapper
166 pnkfelix 1.1.2.13 call to <code>myPrint(pw, true, false)</code>, which turns
167 pnkfelix 1.1.2.13 each Instr into its architecture specific assembly format and
168 pnkfelix 1.1.2.13 omits Instr ID number information.
169 pnkfelix 1.1.2.13 */
170 cananian 1.3.2.2 public void print(java.io.PrintWriter pw, PrintCallback<Instr> callback) {
171 cananian 1.1.2.15 myPrint(pw, true, false, callback);
172 pnkfelix 1.1.2.13 }
173 pnkfelix 1.1.2.13
174 pnkfelix 1.1.2.17 /** Simple wrapper around myPrint passing a nop PrintCallback. */
175 pnkfelix 1.1.2.17 public final void myPrint(java.io.PrintWriter apw, boolean assem) {
176 cananian 1.3.2.2 myPrint(apw, assem, new PrintCallback<Instr>());
177 pnkfelix 1.1.2.17 }
178 pnkfelix 1.1.2.16
179 cananian 1.1.2.1 /** Displays the assembly instructions of this codeview. Attempts
180 cananian 1.1.2.1 * to do so in a well-formatted, easy to read way. <BR>
181 cananian 1.1.2.1 * XXX - currently uses generic, not so easy to read, printer.
182 cananian 1.1.2.1 *
183 pnkfelix 1.1.2.16 * @deprecated Use Code#myPrint(PrintWriter,boolean,PrintCallback)
184 pnkfelix 1.1.2.16 *
185 pnkfelix 1.1.2.13 * @param pw The PrintWriter to send the formatted output to.
186 pnkfelix 1.1.2.13 * @param assem If true, uses <code>toAssem(Instr)</code> to
187 pnkfelix 1.1.2.13 * convert Instrs to assembly form. Else just calls
188 pnkfelix 1.1.2.13 * <code>Instr.toString()</code>.
189 pnkfelix 1.1.2.13 * @param annotateID If true, prints out the ID for each Instr
190 pnkfelix 1.1.2.13 * before printing the Instr itself.
191 pnkfelix 1.1.2.13 * @see Code#toAssem
192 cananian 1.1.2.1 */
193 pnkfelix 1.1.2.16 protected final void myPrint(java.io.PrintWriter apw,
194 pnkfelix 1.1.2.16 boolean assem,
195 pnkfelix 1.1.2.16 final boolean annotateID,
196 cananian 1.3.2.2 final PrintCallback<Instr> callback) {
197 cananian 1.3.2.2 myPrint(apw, assem, new PrintCallback<Instr>() {
198 cananian 1.3.2.2 public void printBefore(java.io.PrintWriter pw, Instr hce ){
199 pnkfelix 1.1.2.16 callback.printBefore(pw,hce);
200 pnkfelix 1.1.2.16 if (annotateID) {
201 cananian 1.3.2.2 pw.print( hce.getID() );
202 pnkfelix 1.1.2.16 pw.print( '\t' );
203 pnkfelix 1.1.2.16 }
204 pnkfelix 1.1.2.16 }
205 cananian 1.3.2.2 public void printAfter(java.io.PrintWriter pw, Instr hce ){
206 pnkfelix 1.1.2.16 callback.printAfter(pw, hce);
207 pnkfelix 1.1.2.16 }
208 pnkfelix 1.1.2.16 });
209 pnkfelix 1.1.2.16 }
210 pnkfelix 1.1.2.16
211 pnkfelix 1.1.2.16 /** Displays the assembly instructions of this codeview. Attempts
212 pnkfelix 1.1.2.16 * to do so in a well-formatted, easy to read way. <BR>
213 pnkfelix 1.1.2.16 * XXX - currently uses generic, not so easy to read, printer.
214 pnkfelix 1.1.2.16 *
215 pnkfelix 1.1.2.16 * @param pw The PrintWriter to send the formatted output to.
216 pnkfelix 1.1.2.16 * @param assem If true, uses <code>toAssem(Instr)</code> to
217 pnkfelix 1.1.2.16 * convert Instrs to assembly form. Else just calls
218 pnkfelix 1.1.2.16 * <code>Instr.toString()</code>.
219 pnkfelix 1.1.2.16 * @see Code#toAssem
220 pnkfelix 1.1.2.16 */
221 pnkfelix 1.1.2.16 protected final void myPrint(java.io.PrintWriter pw,
222 pnkfelix 1.1.2.16 boolean assem,
223 cananian 1.3.2.2 PrintCallback<Instr> callback) {
224 cananian 1.1.2.1 final HashSet outputLabels = new HashSet();
225 cananian 1.1.2.5 final MultiMap labelsNeeded = new GenericMultiMap();
226 cananian 1.1.2.1
227 cananian 1.1.2.9 for (Instr instr=instrs; instr != null; instr=instr.getNext()) {
228 pnkfelix 1.1.2.12 StringBuffer str = new StringBuffer();
229 pnkfelix 1.1.2.13
230 cananian 1.1.2.1 if (instr instanceof InstrLABEL ||
231 cananian 1.1.2.1 instr instanceof InstrDIRECTIVE) {
232 cananian 1.1.2.1
233 pnkfelix 1.1.2.13 str.append(instr.toString());
234 cananian 1.1.2.1
235 cananian 1.1.2.1 } else {
236 cananian 1.1.2.1 try {
237 pnkfelix 1.1.2.17 String asmstr = (assem?toAssem(instr):instr.toString());
238 pnkfelix 1.1.2.17 // adding one because reader requires sz > 0
239 cananian 1.1.2.1 BufferedReader reader =
240 pnkfelix 1.1.2.11 new BufferedReader
241 pnkfelix 1.1.2.17 (new StringReader(asmstr),1+asmstr.length());
242 cananian 1.1.2.1 String s = reader.readLine();
243 cananian 1.1.2.1 while (s != null) {
244 pnkfelix 1.1.2.7 str.append("\t"+ s);
245 cananian 1.1.2.1 s = reader.readLine();
246 pnkfelix 1.1.2.7 if (s!=null) str.append("\n");
247 cananian 1.1.2.1 }
248 cananian 1.1.2.1 } catch (IOException e ) {
249 cananian 1.3.2.1 assert false : "IOException " + e.toString() +
250 cananian 1.1.2.1 " should not be thrown during assembly"+
251 cananian 1.3.2.1 " code processing.";
252 cananian 1.1.2.1 }
253 cananian 1.1.2.1 }
254 cananian 1.1.2.1
255 cananian 1.1.2.15 callback.printBefore(pw, instr);
256 pnkfelix 1.1.2.16 pw.print(str.toString()); // FSK: was println!
257 cananian 1.1.2.15 callback.printAfter(pw, instr);
258 pnkfelix 1.1.2.16 pw.println(); // FSK: moved after callback
259 cananian 1.1.2.1 }
260 cananian 1.1.2.1
261 cananian 1.1.2.1 pw.flush();
262 cananian 1.1.2.1
263 cananian 1.1.2.1 }
264 cananian 1.1.2.1
265 cananian 1.1.2.1 /** Produces an assembly code string for <code>instr</code>.
266 cananian 1.1.2.1 * Uses getRegisterName() to do register name string mapping.
267 cananian 1.1.2.1 */
268 cananian 1.1.2.1 public String toAssem(Instr instr) {
269 cananian 1.1.2.1 String assem = instr.getAssem();
270 pnkfelix 1.1.2.12 StringBuffer s = new StringBuffer(assem.length());
271 cananian 1.1.2.1
272 cananian 1.1.2.1 int len = assem.length();
273 cananian 1.1.2.1 for(int i=0; i<len; i++) {
274 cananian 1.1.2.1 char c = assem.charAt(i);
275 cananian 1.1.2.1 switch(c) {
276 cananian 1.1.2.1 case '`':
277 cananian 1.1.2.1 Temp temp = null;
278 cananian 1.1.2.1 Label label = null;
279 cananian 1.1.2.1 boolean getReg = false;
280 cananian 1.1.2.1 i++; c = assem.charAt(i);
281 cananian 1.1.2.1 switch(c) {
282 cananian 1.1.2.1 case 'd': {
283 cananian 1.1.2.1 i++; int n = Character.digit(assem.charAt(i), 10);
284 cananian 1.1.2.1 if (n < instr.def().length) {
285 cananian 1.1.2.1 temp = instr.def()[n];
286 cananian 1.1.2.1 getReg = true;
287 cananian 1.1.2.1 } else {
288 cananian 1.3.2.1 assert false : "index mismatch in "+assem +
289 cananian 1.3.2.1 " " + Arrays.asList(instr.def());
290 cananian 1.1.2.1 s.append("d?");
291 cananian 1.1.2.1 }
292 cananian 1.1.2.1 break;
293 cananian 1.1.2.1 }
294 cananian 1.1.2.1 case 's': {
295 cananian 1.1.2.1 i++; int n = Character.digit(assem.charAt(i), 10);
296 cananian 1.1.2.1 if (n < instr.use().length) {
297 cananian 1.1.2.1 temp = instr.use()[n];
298 cananian 1.1.2.1 getReg = true;
299 cananian 1.1.2.1 } else {
300 cananian 1.3.2.1 assert false : "index mismatch in "+assem +
301 cananian 1.3.2.1 " " + Arrays.asList(instr.use());
302 cananian 1.1.2.1 s.append("s?");
303 cananian 1.1.2.1 }
304 cananian 1.1.2.1 break;
305 cananian 1.1.2.1 }
306 cananian 1.1.2.1 case 'L': {
307 cananian 1.1.2.1 i++; int n = Character.digit(assem.charAt(i), 10);
308 cananian 1.1.2.1 if (n < instr.getTargets().size()) {
309 cananian 1.1.2.1 label = (Label) instr.getTargets().get(n);
310 cananian 1.1.2.1 s.append(label);
311 cananian 1.1.2.1 } else {
312 cananian 1.3.2.1 assert false : "index mismatch in "+assem +
313 cananian 1.3.2.1 " " + Arrays.asList(instr.use());
314 cananian 1.1.2.1 s.append("L?");
315 cananian 1.1.2.1 }
316 cananian 1.1.2.1 break;
317 cananian 1.1.2.1 }
318 cananian 1.1.2.1 case '`':
319 cananian 1.1.2.1 s.append("`");
320 cananian 1.1.2.1 break;
321 cananian 1.1.2.1 default:
322 cananian 1.3.2.1 assert false : "error parsing "+assem;
323 cananian 1.1.2.1 }
324 cananian 1.1.2.1
325 cananian 1.1.2.1 if (getReg) {
326 cananian 1.1.2.1 char lastChar = ' ';
327 pnkfelix 1.1.2.12 StringBuffer var = new StringBuffer(assem.length());
328 cananian 1.1.2.1 boolean more = true;
329 cananian 1.1.2.1 while(more && i<(assem.length()-1)) {
330 cananian 1.1.2.1 i++; c = assem.charAt(i);
331 cananian 1.1.2.1 if (!Character.isLetterOrDigit(c)) {
332 cananian 1.1.2.1 lastChar = c;
333 cananian 1.1.2.1 more = false;
334 cananian 1.1.2.1 } else {
335 cananian 1.1.2.1 var.append(c);
336 cananian 1.1.2.1 }
337 cananian 1.1.2.1 }
338 cananian 1.1.2.1 /*
339 cananian 1.3.2.1 assert ( ! mustGetRegs ) ||
340 cananian 1.1.2.1 frame.getRegFileInfo().isRegister(temp) ||
341 cananian 1.3.2.1 registerAssigned(instr, temp) : ("final assembly output for "+
342 cananian 1.1.2.1 "Instr: "+instr+" must have "+
343 cananian 1.1.2.1 "reg assigned to Temp: "+temp);
344 cananian 1.1.2.1 */
345 cananian 1.1.2.1 s.append(getRegisterName(instr, temp,
346 cananian 1.1.2.1 var.toString()));
347 cananian 1.1.2.1 s.append(lastChar);
348 cananian 1.1.2.1 }
349 cananian 1.1.2.1
350 cananian 1.1.2.1 break;
351 cananian 1.1.2.1
352 cananian 1.1.2.1 default:
353 cananian 1.1.2.1 s.append(c);
354 cananian 1.1.2.1 }
355 cananian 1.1.2.1 }
356 cananian 1.1.2.1
357 pnkfelix 1.1.2.8 // return formatCommentedInstr(s.toString(),instr.toString());
358 pnkfelix 1.1.2.8 return s.toString();
359 cananian 1.1.2.1 }
360 kkz 1.1.2.6
361 kkz 1.1.2.6 /** Returns the <code>Derivation</code> associated with
362 kkz 1.1.2.6 <code>this</code>. Returns <code>null</code> if
363 kkz 1.1.2.6 <code>Derivation</code> information is not available.
364 kkz 1.1.2.6 */
365 kkz 1.1.2.6 public Derivation getDerivation() { return null; }
366 cananian 1.1.2.1
367 cananian 1.1.2.1 /** Returns an assembly code identifier for the register that
368 cananian 1.1.2.1 <code>val</code> will be stored into.
369 cananian 1.1.2.1 */
370 pnkfelix 1.1.2.3 public abstract String getRegisterName(Instr i, Temp val,
371 pnkfelix 1.1.2.3 String suffix);
372 pnkfelix 1.1.2.8
373 pnkfelix 1.1.2.8 /** Returns an assembly code String version of <code>exec</code>
374 pnkfelix 1.1.2.8 with <code>orig</code> in the comments for <code>exec</code>.
375 pnkfelix 1.1.2.8 <BR> <B>requires:</B> <code>exec</code> and <code>orig</code>
376 pnkfelix 1.1.2.8 have the same number of lines
377 pnkfelix 1.1.2.8 <BR> <B>effects:</B>
378 pnkfelix 1.1.2.8 let s be a new empty string
379 pnkfelix 1.1.2.8 in for each line:le in <code>exec</code>,
380 pnkfelix 1.1.2.8 let lo be the next line of <code>orig</code> ;
381 pnkfelix 1.1.2.12 s += (le + " @" + lo)
382 pnkfelix 1.1.2.8 return s
383 pnkfelix 1.1.2.8 */
384 pnkfelix 1.1.2.8 public static String formatCommentedInstr(String exec, String orig) {
385 pnkfelix 1.1.2.12 StringBuffer sb = new StringBuffer(exec.length() + orig.length());
386 pnkfelix 1.1.2.8 try {
387 pnkfelix 1.1.2.8 BufferedReader er = new BufferedReader(new StringReader(exec));
388 pnkfelix 1.1.2.8 BufferedReader or = new BufferedReader(new StringReader(orig));
389 pnkfelix 1.1.2.8 String e = er.readLine();
390 pnkfelix 1.1.2.8 String o = or.readLine();
391 pnkfelix 1.1.2.8 while(e != null) {
392 pnkfelix 1.1.2.8 sb.append(e + " @ " + o);
393 pnkfelix 1.1.2.8 e = er.readLine();
394 pnkfelix 1.1.2.8 o = or.readLine();
395 pnkfelix 1.1.2.8 }
396 pnkfelix 1.1.2.8 return sb.toString();
397 pnkfelix 1.1.2.8 } catch (IOException e) {
398 cananian 1.3.2.1 assert false;
399 pnkfelix 1.1.2.8 return "died";
400 pnkfelix 1.1.2.8 }
401 pnkfelix 1.1.2.8 }
402 cananian 1.1.2.1 }
403 cananian 1.2