1 // <script type="text/javascript">
4 * pack a javascript file, and return a shorter version!
6 * a bit picky at present with ; and crlf reading...
7 * @arg ts {TokenStream}
11 CompressWhite = function (ts, packer)
15 //var str = File.read(fn);
23 if (tok.type == "WHIT") {
28 // just spaces, not \n!
29 //if (tok.data.indexOf("\n") < 0) {
36 // add semi-colon's where linebreaks are used... - not foolproof yet.!
37 if (tok.type == "NAME") {
38 //var tokident = ts.look(-1).data + tok.data + ts.look(1).data + ts.look(2).data;
39 // a = new function() {}
40 if (ts.lookTok(1).data == '=' && ts.lookTok(2).name == 'NEW' &&
41 ts.lookTok(3).name == 'FUNCTION') {
49 // if next is not ';' -> make it so...
51 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.lookTok(1,true).name == "NEWLINE") {
52 ts.look(0).outData = ts.cur().data +";";
58 // a = function() { ...
60 if (ts.lookTok(1).data == '=' && ts.lookTok(2).name == "FUNCTION") {
62 //println("got = function() ");
67 // if next is not ';' -> make it so...
68 // although this var a=function(){},v,c; causes
69 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.lookTok(1,true).name == "NEWLINE") {
70 ts.look(0).outData = ts.look(0).data+";";
76 // next item is a name..
77 if ((ts.lookTok(1).type == 'NAME' || ts.lookTok(1).type == 'KEYW' ) && ts.look(1,true).name == "NEWLINE") {
79 ts.look(0).outData = ts.look(0).data+"\n";
81 // method call followed by name..
82 if (ts.lookTok(1).data == "(") {
86 // although this var a=function(){},v,c; causes
88 if (ts.lookTok(1).type == 'NAME' && ts.look(1,true).name == "NEWLINE") {
90 ts.look(0).outData = ts.look(0).data+"\n";
98 // function a () { ... };
100 if (ts.look(-1).isTypeN(Script.TOKfunction) && ts.look(1).isTypeN(Script.TOKlparen)) {
102 //println("got = function() ");
105 ts.balance("lparen");
106 ts.balance("lbrace");
107 // if next is not ';' -> make it so...
108 // although this var a=function(){},v,c; causes
109 if (!ts.look(1).isData(';') && !ts.look(1).isData('}') && ts.look(1,true).isLineBreak()) {
110 ts.cur().outData = ts.cur().data+";";
120 if (ts.lookTok(1).data == '=' && ts.lookTok(2).data == '{') {
122 //println("----------*** 3 *** --------------");
125 if (!ts.balance("{") ){
126 throw "could not find end lbrace!!!";
128 // if next is not ';' -> make it so...
130 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.look(1,true).name=="NEWLINE") {
131 ts.look(0).outData = ts.look(0).data +";";
144 //println("got Token: " + tok.type);
148 switch(tok.data.toUpperCase()) {
149 // things that need space appending
153 // if next item is a identifier..
154 if (ts.lookTok(1).type == "NAME" || ts.lookTok(1).data.match(/^[a-z]+$/i) ) { // as include is a keyword for us!!
155 tok.outData = tok.data + " ";
160 case "RETURN": // if next item is not a semi; (or }
161 if (ts.lookTok(1).data == ';' || ts.lookTok(1).data == '}') {
164 tok.outData = tok.data + " ";
169 case "ELSE": // if next item is not a semi; (or }
170 if (!ts.lookTok(1).name == "IF") {
174 tok.outData = tok.data + " ";
177 case "++": // if previous was a plus or next is a + add a space..
178 case "--": // if previous was a - or next is a - add a space..
180 var p = (tok.data == "--" ? '-' : '+');
182 if (ts.lookTok(1).data == p) {
183 tok.outData = tok.data + " ";
185 if (ts.lookTok(-1).data == p) {
186 tok.outData = " " + tok.data;
191 case "IN": // before and after??
194 tok.outData = " " + tok.data + " ";
197 case "VAR": // always after..
204 tok.outData = tok.data + " ";
208 case "TYPEOF": // what about typeof(
209 if (ts.lookTok(1).data != '(') {
210 tok.outData = tok.data + " ";
214 //remove semicolon before brace --
215 //if(ts.look(1).isTypeN(Script.TOKrbrace)) {
227 // NOW OUTPUT THE THING.
228 //var f = new File(minfile, File.NEW);
232 out.length = ts.slen; // prealloc.
235 var tok = ts.nextTok();
241 if (tok.type == "NAME" && tok.identifier && tok.identifier.mungedValue && tok.identifier.mungedValue.length) {
242 //f.write(tok.identifier.mungedValue);
243 out += tok.identifier.mungedValue;
247 // at this point we can apply a text translation kit...
249 if ((tok.type == 'STRN') && (tok.name== 'DOUBLE_QUOTE')) {
250 if (packer && packer.stringHandler) {
251 out += packer.stringHandler(tok);
255 //f.write(tok.outData);
256 out += tok.outData !== false ? tok.outData : tok.data;
258 if ((tok.outData == ';') && (out.length - outoff > 255)) {
265 // remove the last ';' !!!
266 if (out.substring(out.length-1) == ';') {
267 return out.substring(0,out.length-1);