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source: branches/OKBJavaConnector/ECJClient/src/ec/util/Code.java @ 10501

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Last change on this file since 10501 was 6152, checked in by bfarka, 14 years ago
added ecj and custom statistics to communicate with the okb services #1441
File size: 27.4 KB

Rev	Line
[6152]	1	/*
	2	Copyright 2006 by Sean Luke
	3	Licensed under the Academic Free License version 3.0
	4	See the file "LICENSE" for more information
	5	*/
	6
	7
	8	package ec.util;
	9	import java.io.*;
	10	import ec.*;
	11
	12	/*
	13	* Code.java
	14	*
	15	* Created: Sat Oct 23 13:45:20 1999
	16	* By: Sean Luke
	17	*/
	18
	19	/**
	20	* Code provides some simple wrapper functions for encoding and decoding
	21	* basic data types for storage in a pseudo-Java source code strings
	22	* format. This differs from just "printing"
	23	* them to string in that the actual precision of the object is maintained.
	24	* Code attempts to keep the representations as "Java-like" as possible --
	25	* the exceptions being primarily floats and doubles, which are encoded as
	26	* ints and longs. Encoding of objects and arrays is not supported. You'll
	27	* have to handle that yourself. Strings are supported.
	28	*
	29	* <p>Everything is case-SENSITIVE. Here's the breakdown.
	30	*
	31
	32	<p><table>
	33	<tr><td><b>Type</b></td><td><b>Format</b></td></tr>
	34	<tr><td>boolean</td><td><tt>true</tt> or <tt>false</tt> (old style, case sensitive) or <tt>T</tt> or <tt>F</tt> (new style, case sensitive)</td></tr>
	35	<tr><td>byte</td><td><tt>b<i>byte</i>\|</tt></td></tr>
	36	<tr><td>short</td><td><tt>s<i>short</i>\|</tt></td></tr>
	37	<tr><td>int</td><td><tt>i<i>int</i>\|</tt></td></tr>
	38	<tr><td>long</td><td><tt>l<i>long</i>\|</tt></td></tr>
	39	<tr><td>float</td><td><tt>f<i>floatConvertedToIntForStorage</i>\|<i>humanReadableFloat</i>\|</tt> or (only for reading in) f\|<i>humanReadableFloat</i>\|</td></tr>
	40	<tr><td>float</td><td><tt>d<i>doubleConvertedToLongForStorage</i>\|<i>humanReadableDouble</i>\|</tt> or (only for reading in) d\|<i>humanReadableDouble</i>\|</td></tr>
	41	<tr><td>char</td><td>standard Java char, except that the only valid escape sequences are: \0 \t \n \b \' \" \ u <i>unicodeHex</i></td></tr>
	42	<tr><td>string</td><td>standard Java string with \ u ...\ u Unicode escapes, except that the only other valid escape sequences are: \0 \t \n \b \' \" </i></td></tr>
	43	</table>
	44	*
	45	*
	46	* @author Sean Luke
	47	* @version 1.0
	48	*/
	49
	50	public class Code
	51	{
	52	/** Encodes a boolean. */
	53	public static String encode(final boolean b)
	54	// old style -- no longer used
	55	// { return b ? Boolean.TRUE.toString() : Boolean.FALSE.toString(); }
	56	{ return b ? "T" : "F"; }
	57
	58	/** Encodes a byte. */
	59	public static String encode(final byte b)
	60	{ return "b" + Byte.toString(b) + "\|"; }
	61
	62	/** Encodes a character. */
	63	public static String encode(final char c)
	64	{
	65	if (c >= 32 && c < 127 && c !='\\' &&
	66	c!= '\'') // we can safely print it
	67	return "'" + String.valueOf(c) + "'";
	68	else
	69	{
	70	// print it with an escape character
	71	if (c=='\b')
	72	return "'\\b'";
	73	else if (c=='\n')
	74	return "'\\n'";
	75	else if (c=='\t')
	76	return "'\\t'";
	77	else if (c=='\'')
	78	return "'\\''";
	79	else if (c=='\\')
	80	return "'\\\\'";
	81	else if (c=='\0')
	82	return "'\\\\0";
	83	else
	84	{
	85	String s = Integer.toHexString((int)c);
	86	// pad with 0's -- Java's parser freaks out otherwise
	87	switch (s.length())
	88	{
	89	case 1: s = "'\\u000" + s + "'"; break;
	90	case 2: s = "'\\u00" + s + "'"; break;
	91	case 3: s = "'\\u0" + s + "'"; break;
	92	case 4: s = "'\\u" + s + "'"; break;
	93	}
	94	return s;
	95	}
	96	}
	97	}
	98
	99	/** Encodes a short. */
	100	public static String encode(final short s)
	101	{ return "s" + Short.toString(s) + "\|"; }
	102
	103	/** Encodes an int. */
	104	public static String encode(final int i)
	105	{ return "i" + Integer.toString(i) + "\|"; }
	106
	107	/** Encodes a long. */
	108	public static String encode(final long l)
	109	{ return "l" + Long.toString(l) + "\|"; }
	110
	111	/** Encodes a float. */
	112	public static String encode(final float f)
	113	{ return "f" + Integer.toString(Float.floatToIntBits(f))+ "\|" + String.valueOf(f) + "\|"; }
	114
	115	/** Encodes a double. */
	116	public static String encode(final double d)
	117	{ return "d" + Long.toString(Double.doubleToLongBits(d))+ "\|" + String.valueOf(d) + "\|"; }
	118
	119	/** Encodes a String. */
	120	public static String encode(final String s)
	121	{
	122	boolean inUnicode = false;
	123	int l = s.length();
	124	StringBuffer sb = new StringBuffer(l);
	125	sb.append("\"");
	126	for(int x=0;x<l;x++)
	127	{
	128	char c = s.charAt(x);
	129	if ( c >= 32 && c < 127 && c !='\\' && c!= '"') // we allow spaces
	130	// we can safely print it
	131	{
	132	if (inUnicode) { sb.append("\\u"); inUnicode=false; }
	133	sb.append(c);
	134	}
	135	else
	136	{
	137	// print it with an escape character
	138	if (c=='\b')
	139	{
	140	if (inUnicode) { sb.append("\\u"); inUnicode=false; }
	141	sb.append("\\b");
	142	}
	143	else if (c=='\n')
	144	{
	145	if (inUnicode) { sb.append("\\u"); inUnicode=false; }
	146	sb.append("\\n");
	147	}
	148	else if (c=='\t')
	149	{
	150	if (inUnicode) { sb.append("\\u"); inUnicode=false; }
	151	sb.append("\\t");
	152	}
	153	else if (c=='"')
	154	{
	155	if (inUnicode) { sb.append("\\u"); inUnicode=false; }
	156	sb.append("\\\"");
	157	}
	158	else if (c=='\\')
	159	{
	160	if (inUnicode) { sb.append("\\u"); inUnicode=false; }
	161	sb.append("\\\\");
	162	}
	163	else if (c=='\0')
	164	{
	165	if (inUnicode) { sb.append("\\u"); inUnicode=false; }
	166	sb.append("\\0");
	167	}
	168	else
	169	{
	170	if (!inUnicode) {sb.append("\\u"); inUnicode=true; }
	171	String ss = Integer.toHexString((int)c);
	172	// pad with 0's -- Java's parser freaks out otherwise
	173	switch (ss.length())
	174	{
	175	case 1: sb.append("000" + ss); break;
	176	case 2: sb.append("00" + ss); break;
	177	case 3: sb.append("0" + ss); break;
	178	case 4: sb.append(ss); break;
	179	}
	180	}
	181	}
	182	}
	183	if (inUnicode) sb.append("\\u");
	184	sb.append("\"");
	185	return sb.toString();
	186	}
	187
	188
	189
	190
	191
	192
	193
	194
	195
	196	/** Decodes the next item out of a DecodeReturn and modifies the DecodeReturn to hold the results. See DecodeReturn for more
	197	explanations about how to interpret the results. */
	198
	199	public static void decode(DecodeReturn d)
	200	{
	201	String dat = d.data;
	202	int x = d.pos;
	203	int len = d.data.length();
	204
	205	// look for whitespace or ( or )
	206	for ( ; x<len; x++ )
	207	if (!Character.isWhitespace(dat.charAt(x))) break;
	208
	209	// am I at the end of my rope?
	210	if (x==len) { d.type = DecodeReturn.T_ERROR; d.s = "Out of tokens"; return; }
	211
	212	// what type am I?
	213	switch(dat.charAt(x))
	214	{
	215
	216	case 't': // boolean (true)
	217	if (x+3 < len && /* enough space */
	218	dat.charAt(x+1)=='r' &&
	219	dat.charAt(x+2)=='u' &&
	220	dat.charAt(x+3)=='e')
	221	{ d.type = DecodeReturn.T_BOOLEAN; d.l = 1; d.pos = x+4; return; }
	222	else { d.type = DecodeReturn.T_ERROR; d.s = "Expected a (true) boolean"; return; }
	223	//break;
	224
	225	case 'T': // boolean (true)
	226	{ d.type = DecodeReturn.T_BOOLEAN; d.l = 1; d.pos = x+1; return; }
	227	//break;
	228
	229	case 'F': // boolean (false)
	230	{ d.type = DecodeReturn.T_BOOLEAN; d.l = 0; d.pos = x+1; return; }
	231	//break;
	232
	233
	234
	235
	236	case 'f': // float or boolean
	237	if (x+4 < len && /* enough space */
	238	dat.charAt(x+1)=='a' && dat.charAt(x+2)=='l' && dat.charAt(x+3)=='s' && dat.charAt(x+4)=='e' )
	239	{ d.type = DecodeReturn.T_BOOLEAN; d.l = 0; d.pos = x+5; return; }
	240	else
	241	{
	242	boolean readHuman = false;
	243	String sf = null;
	244	int initial = x+1;
	245
	246	// look for next '\|'
	247	for ( ; x < len; x++)
	248	if (dat.charAt(x)=='\|') break;
	249
	250	if (x==initial) readHuman=true;
	251
	252	if ( x >= len )
	253	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a float"; return; }
	254
	255	if (!readHuman)
	256	sf = dat.substring(initial,x);
	257	x++;
	258
	259	// look for next '\|'
	260	int initial2 = x; // x is now just past first \|
	261	for ( ; x < len; x++)
	262	if (dat.charAt(x)=='\|') break;
	263
	264	if ( x >= len )
	265	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a float"; return; }
	266	if (readHuman)
	267	sf = dat.substring(initial2,x);
	268
	269	float f;
	270	try
	271	{
	272	if (readHuman) f = Float.parseFloat(sf);
	273	else f = Float.intBitsToFloat(Integer.parseInt(sf));
	274	}
	275	catch (NumberFormatException e)
	276	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a float"; return; }
	277	d.type = DecodeReturn.T_FLOAT;
	278	d.d = f;
	279	d.pos = x+1;
	280	return;
	281	}
	282
	283
	284
	285
	286
	287
	288
	289
	290	case 'd': // double
	291
	292	{
	293	boolean readHuman = false;
	294	String sf = null;
	295	int initial = x+1;
	296
	297	// look for next '\|'
	298	for ( ; x < len; x++)
	299	if (dat.charAt(x)=='\|') break;
	300
	301	if (x==initial) readHuman=true;
	302
	303	if ( x >= len )
	304	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a double"; return; }
	305
	306	if (!readHuman)
	307	sf = dat.substring(initial,x);
	308	x++;
	309
	310	// look for next '\|'
	311	int initial2 = x; // x is now just past first \|
	312	for ( ; x < len; x++)
	313	if (dat.charAt(x)=='\|') break;
	314
	315	if ( x >= len )
	316	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a double"; return; }
	317	if (readHuman)
	318	sf = dat.substring(initial2,x);
	319
	320	double f;
	321	try
	322	{
	323	if (readHuman) f = Double.parseDouble(sf);
	324	else f = Double.longBitsToDouble(Long.parseLong(sf));
	325	}
	326	catch (NumberFormatException e)
	327	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a double"; return; }
	328	d.type = DecodeReturn.T_DOUBLE;
	329	d.d = f;
	330	d.pos = x+1;
	331	return;
	332	}
	333	// break;
	334
	335
	336
	337
	338
	339
	340
	341
	342	case 'b': // byte
	343
	344	{
	345	int initial = x+1;
	346
	347	// look for next '\|'
	348	for ( ; x < len; x++)
	349	if (dat.charAt(x)=='\|') break;
	350
	351	if ( x >= len )
	352	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a byte"; return; }
	353	String sf = dat.substring(initial,x);
	354
	355	byte f;
	356	try
	357	{ f = Byte.parseByte(sf); }
	358	catch (NumberFormatException e)
	359	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a byte"; return; }
	360	d.type = DecodeReturn.T_BYTE;
	361	d.l = f;
	362	d.pos = x+1;
	363	return;
	364	}
	365	// break;
	366
	367
	368
	369
	370
	371
	372	case 's': // short
	373
	374	{
	375	int initial = x+1;
	376
	377	// look for next '\|'
	378	for ( ; x < len; x++)
	379	if (dat.charAt(x)=='\|') break;
	380
	381	if ( x >= len )
	382	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a short"; return; }
	383	String sf = dat.substring(initial,x);
	384
	385	short f;
	386	try
	387	{ f = Short.parseShort(sf); }
	388	catch (NumberFormatException e)
	389	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a short"; return; }
	390	d.type = DecodeReturn.T_SHORT;
	391	d.l = f;
	392	d.pos = x+1;
	393	return;
	394	}
	395	// break;
	396
	397
	398
	399
	400	case 'i': // int
	401
	402	{
	403	int initial = x+1;
	404
	405	// look for next '\|'
	406	for ( ; x < len; x++)
	407	if (dat.charAt(x)=='\|') break;
	408
	409	if ( x >= len )
	410	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected an int"; return; }
	411	String sf = dat.substring(initial,x);
	412
	413	int f;
	414	try
	415	{ f = Integer.parseInt(sf); }
	416	catch (NumberFormatException e)
	417	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected an int"; return; }
	418	d.type = DecodeReturn.T_INT;
	419	d.l = f;
	420	d.pos = x+1;
	421	return;
	422	}
	423	// break;
	424
	425
	426
	427
	428
	429
	430	case 'l': // long
	431
	432	{
	433	int initial = x+1;
	434
	435	// look for next '\|'
	436	for ( ; x < len; x++)
	437	if (dat.charAt(x)=='\|') break;
	438
	439	if ( x >= len )
	440	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a long"; return; }
	441	String sf = dat.substring(initial,x);
	442
	443	long f;
	444	try
	445	{ f = Long.parseLong(sf); }
	446	catch (NumberFormatException e)
	447	{ d.type = DecodeReturn.T_ERROR; d.s = "Expected a long"; return; }
	448	d.type = DecodeReturn.T_LONG;
	449	d.l = f;
	450	d.pos = x+1;
	451	return;
	452	}
	453	// break;
	454
	455
	456
	457
	458
	459
	460	case '"': // string
	461	{
	462	StringBuffer sb = new StringBuffer();
	463	boolean inUnicode = false;
	464
	465	x++;
	466	for ( ; x < len; x++)
	467	{
	468	char c = dat.charAt(x);
	469	if (c=='"')
	470	{
	471	// done with the string
	472	if (inUnicode) // uh oh
	473	{ d.type = DecodeReturn.T_ERROR; d.s = "Forgot to terminate Unicode with a '\\u' in the string"; return; }
	474	d.type = DecodeReturn.T_STRING;
	475	d.s = sb.toString();
	476	d.pos = x+1;
	477	return;
	478	}
	479	else if (c=='\\') // escape
	480	{
	481	x++;
	482	if ( x >= len )
	483	{ d.type = DecodeReturn.T_ERROR; d.s = "Unterminated String"; return; }
	484	if (dat.charAt(x)!='u')
	485	{ d.type = DecodeReturn.T_ERROR; d.s = "Escape character in Unicode sequence"; return; }
	486
	487	switch (dat.charAt(x))
	488	{
	489	case 'u': inUnicode = !inUnicode; break;
	490	case 'b': sb.append('\b'); break;
	491	case 'n': sb.append('\n'); break;
	492	case '"': sb.append('"'); break;
	493	case '\'': sb.append('\''); break;
	494	case 't': sb.append('\t'); break;
	495	case '\\': sb.append('\\'); break;
	496	case '0': sb.append('\0'); break;
	497	default:
	498	{ d.type = DecodeReturn.T_ERROR; d.s = "Bad escape char in String"; return; }
	499	}
	500	}
	501	else if (inUnicode)
	502	{
	503	if ( x + 3 >= len )
	504	{ d.type = DecodeReturn.T_ERROR; d.s = "Unterminated String"; return; }
	505	try
	506	{
	507	sb.append((char)(Integer.decode("0x" + c +
	508	dat.charAt(x+1) +
	509	dat.charAt(x+2) +
	510	dat.charAt(x+3)).intValue()));;
	511	x+=3;
	512	}
	513	catch (NumberFormatException e)
	514	{ d.type = DecodeReturn.T_ERROR; d.s = "Bad Unicode in String"; return; }
	515	}
	516	else sb.append(c);
	517	}
	518	d.type = DecodeReturn.T_ERROR; d.s = "Unterminated String"; return;
	519	}
	520	//break;
	521
	522
	523
	524
	525
	526
	527
	528
	529
	530
	531
	532
	533
	534
	535	case '\'': // char
	536	{
	537	x++;
	538	if ( x >= len )
	539	{ d.type = DecodeReturn.T_ERROR; d.s = "Unterminated char"; return; }
	540	char c = dat.charAt(x);
	541	if (c=='\\')
	542	{
	543	x++;
	544	if (x>=len)
	545	{ d.type = DecodeReturn.T_ERROR; d.s = "Unterminated char"; return; }
	546	switch (dat.charAt(x))
	547	{
	548	case 'u':
	549	if ( x + 4 >= len )
	550	{ d.type = DecodeReturn.T_ERROR; d.s = "Unterminated char"; return; }
	551	try
	552	{
	553	c = (char)(Integer.decode("0x" +
	554	dat.charAt(x+1) +
	555	dat.charAt(x+2) +
	556	dat.charAt(x+3) +
	557	dat.charAt(x+4)).intValue());
	558	}
	559	catch (NumberFormatException e)
	560	{ d.type = DecodeReturn.T_ERROR; d.s = "Bad Unicode in char"; return; }
	561	x+=5;
	562	break;
	563
	564	case 'b': c = '\b'; x++; break;
	565	case 'n': c = '\n'; x++; break;
	566	case '"': c = '"'; x++; break;
	567	case '\'': c = '\''; x++; break;
	568	case 't': c = '\t'; x++; break;
	569	case '\\': c = '\\'; x++; break;
	570	case '0': c = '\0'; x++; break;
	571	default:
	572	{ d.type = DecodeReturn.T_ERROR; d.s = "Bad escape char in char"; return; }
	573	}
	574	if (dat.charAt(x)!='\'')
	575	{ d.type = DecodeReturn.T_ERROR; d.s = "Bad char"; return; }
	576	d.type = DecodeReturn.T_CHAR;
	577	d.l = c;
	578	d.pos = x+1;
	579	return;
	580	}
	581	else
	582	{
	583	x++;
	584	if ( x >= len )
	585	{ d.type = DecodeReturn.T_ERROR; d.s = "Unterminated char"; return; }
	586	if (dat.charAt(x)!='\'')
	587	{ d.type = DecodeReturn.T_ERROR; d.s = "Bad char"; return; }
	588	d.type = DecodeReturn.T_CHAR;
	589	d.l = c;
	590	d.pos = x + 1;
	591	return;
	592	}
	593
	594
	595	}
	596	//break;
	597
	598
	599
	600
	601
	602
	603
	604	default:
	605	d.type = DecodeReturn.T_ERROR; d.s = "Unknown token"; return;
	606	// break;
	607	}
	608	}
	609
	610	/** Finds the next nonblank line, then trims the line and checks the preamble. Returns a DecodeReturn on the line if successful, else posts a fatal error.
	611	Sets the DecodeReturn's line number. The DecodeReturn has not yet been decoded. You'll need to do that with Code.decode(...) */
	612	public static DecodeReturn checkPreamble(String preamble, final EvolutionState state,
	613	final LineNumberReader reader)
	614	{
	615	int linenumber = 0; // throw it away later
	616	try
	617	{
	618	// get non-blank line
	619	String s = "";
	620	while(s != null && s.trim().equals(""))
	621	{
	622	linenumber = reader.getLineNumber();
	623	s = reader.readLine();
	624	}
	625
	626	// check the preamble
	627	if (s==null \|\| !(s = s.trim()).startsWith(preamble)) // uh oh
	628	state.output.fatal("Line " + linenumber +
	629	" has a bad preamble.Expected '" + preamble + "'\n-->" + s);
	630	DecodeReturn d = new DecodeReturn(s, preamble.length());
	631	d.lineNumber = linenumber;
	632	return d;
	633	}
	634	catch (IOException e)
	635	{
	636	state.output.fatal("On line " + linenumber + " an IO error occurred:\n\n" + e);
	637	return null; // never happens
	638	}
	639	}
	640
	641	/** Finds the next nonblank line, skips past an expected preamble, and reads in a string if there is one, and returns it.
	642	Generates an error otherwise. */
	643	public static String readStringWithPreamble(String preamble, final EvolutionState state,
	644	final LineNumberReader reader)
	645	{
	646	DecodeReturn d = checkPreamble(preamble, state, reader);
	647	Code.decode(d);
	648	if (d.type!=DecodeReturn.T_STRING)
	649	state.output.fatal("Line " + d.lineNumber +
	650	" has no string after preamble '" + preamble + "'\n-->" + d.data);
	651	return (String)(d.s);
	652	}
	653
	654	/** Finds the next nonblank line, skips past an expected preamble, and reads in a character if there is one, and returns it.
	655	Generates an error otherwise. */
	656	public static char readCharacterWithPreamble(String preamble, final EvolutionState state,
	657	final LineNumberReader reader)
	658	{
	659	DecodeReturn d = checkPreamble(preamble, state, reader);
	660	Code.decode(d);
	661	if (d.type!=DecodeReturn.T_CHAR)
	662	state.output.fatal("Line " + d.lineNumber +
	663	" has no character after preamble '" + preamble + "'\n-->" + d.data);
	664	return (char)(d.l);
	665	}
	666
	667	/** Finds the next nonblank line, skips past an expected preamble, and reads in a byte if there is one, and returns it.
	668	Generates an error otherwise. */
	669	public static byte readByteWithPreamble(String preamble, final EvolutionState state,
	670	final LineNumberReader reader)
	671	{
	672	DecodeReturn d = checkPreamble(preamble, state, reader);
	673	Code.decode(d);
	674	if (d.type!=DecodeReturn.T_BYTE)
	675	state.output.fatal("Line " + d.lineNumber +
	676	" has no byte after preamble '" + preamble + "'\n-->" + d.data);
	677	return (byte)(d.l);
	678	}
	679
	680	/** Finds the next nonblank line, skips past an expected preamble, and reads in a short if there is one, and returns it.
	681	Generates an error otherwise. */
	682	public static short readShortWithPreamble(String preamble, final EvolutionState state,
	683	final LineNumberReader reader)
	684	{
	685	DecodeReturn d = checkPreamble(preamble, state, reader);
	686	Code.decode(d);
	687	if (d.type!=DecodeReturn.T_SHORT)
	688	state.output.fatal("Line " + d.lineNumber +
	689	" has no short after preamble '" + preamble + "'\n-->" + d.data);
	690	return (short)(d.l);
	691	}
	692
	693	/** Finds the next nonblank line, skips past an expected preamble, and reads in a long if there is one, and returns it.
	694	Generates an error otherwise. */
	695	public static long readLongWithPreamble(String preamble, final EvolutionState state,
	696	final LineNumberReader reader)
	697	{
	698	DecodeReturn d = checkPreamble(preamble, state, reader);
	699	Code.decode(d);
	700	if (d.type!=DecodeReturn.T_LONG)
	701	state.output.fatal("Line " + d.lineNumber +
	702	" has no long after preamble '" + preamble + "'\n-->" + d.data);
	703	return (long)(d.l);
	704	}
	705
	706	/** Finds the next nonblank line, skips past an expected preamble, and reads in an integer if there is one, and returns it.
	707	Generates an error otherwise. */
	708	public static int readIntegerWithPreamble(String preamble, final EvolutionState state,
	709	final LineNumberReader reader)
	710	{
	711	DecodeReturn d = checkPreamble(preamble, state, reader);
	712	Code.decode(d);
	713	if (d.type!=DecodeReturn.T_INT)
	714	state.output.fatal("Line " + d.lineNumber +
	715	" has no integer after preamble '" + preamble + "'\n-->" + d.data);
	716	return (int)(d.l);
	717	}
	718
	719
	720	/** Finds the next nonblank line, skips past an expected preamble, and reads in a float if there is one, and returns it.
	721	Generates an error otherwise. */
	722	public static float readFloatWithPreamble(String preamble, final EvolutionState state,
	723	final LineNumberReader reader)
	724	{
	725	DecodeReturn d = checkPreamble(preamble, state, reader);
	726	Code.decode(d);
	727	if (d.type!=DecodeReturn.T_FLOAT)
	728	state.output.fatal("Line " + d.lineNumber +
	729	" has no floating point number after preamble '" + preamble + "'\n-->" + d.data);
	730	return (float)(d.d);
	731	}
	732
	733	/** Finds the next nonblank line, skips past an expected preamble, and reads in a double if there is one, and returns it.
	734	Generates an error otherwise. */
	735	public static double readDoubleWithPreamble(String preamble, final EvolutionState state,
	736	final LineNumberReader reader)
	737	{
	738	DecodeReturn d = checkPreamble(preamble, state, reader);
	739	Code.decode(d);
	740	if (d.type!=DecodeReturn.T_DOUBLE)
	741	state.output.fatal("Line " + d.lineNumber +
	742	" has no double floating point number after preamble '" + preamble + "'. -->" + d.data);
	743	return d.d;
	744	}
	745
	746	/** Finds the next nonblank line, skips past an expected preamble, and reads in a boolean value ("true" or "false") if there is one, and returns it.
	747	Generates an error otherwise. */
	748	public static boolean readBooleanWithPreamble(String preamble, final EvolutionState state,
	749	final LineNumberReader reader)
	750	{
	751	DecodeReturn d = checkPreamble(preamble, state, reader);
	752	Code.decode(d);
	753	if (d.type!=DecodeReturn.T_BOOLEAN)
	754	state.output.fatal("Line " + d.lineNumber +
	755	" has no boolean value ('true' or 'false') after preamble '" + preamble + "'\n-->" + d.data);
	756	return (d.l != 0);
	757	}
	758
	759	}
	760
	761
	762	/*
	763	(BeanShell testing for decoding)
	764
	765	s = " true false s-12\| i232342\|b22\|f234123\|3234.1\| d234111231\|4342.31\|"
	766
	767
	768	s = "\"Hello\" true false s-12\| i232342\|b22\|f234123\|3234.1\| d234111231\|4342.31\| ' ' '\\'' '\\n' \"Hello\\u0000\\uWorld\""
	769	c = new ec.util.Code();
	770	r = new ec.util.DecodeReturn(s);
	771
	772	c.decode(r);
	773	System.out.println(r.type);
	774	System.out.println(r.l);
	775
	776	System.out.println(r.d);
	777	System.out.println(r.s);
	778
	779	*/

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