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) {
35 if (tok.data == "}") {
37 if (ts.lookTok(1).type == 'NAME' && ts.look(1,true).name == "NEWLINE") {
39 ts.look(0).outData = ts.look(0).data+"\n";
45 // add semi-colon's where linebreaks are used... - not foolproof yet.!
46 if (tok.type == "NAME") {
47 //var tokident = ts.look(-1).data + tok.data + ts.look(1).data + ts.look(2).data;
48 // a = new function() {}
49 if (ts.lookTok(1).data == '=' && ts.lookTok(2).name == 'NEW' &&
50 ts.lookTok(3).name == 'FUNCTION') {
58 // if next is not ';' -> make it so...
60 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.lookTok(1,true).name == "NEWLINE") {
61 ts.look(0).outData = ts.cur().data +";";
67 // a = function() { ...
69 if (ts.lookTok(1).data == '=' && ts.lookTok(2).name == "FUNCTION") {
71 //println("got = function() ");
76 // if next is not ';' -> make it so...
77 // although this var a=function(){},v,c; causes
78 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.lookTok(1,true).name == "NEWLINE") {
79 ts.look(0).outData = ts.look(0).data+";";
85 // next item is a name..
86 if ((ts.lookTok(1).type == 'NAME' || ts.lookTok(1).type == 'KEYW' ) && ts.look(1,true).name == "NEWLINE") {
88 ts.look(0).outData = ts.look(0).data+"\n";
90 // method call followed by name..
91 if (ts.lookTok(1).data == "(") {
95 // although this var a=function(){},v,c; causes
97 if (ts.lookTok(1).type == 'NAME' && ts.look(1,true).name == "NEWLINE") {
99 ts.look(0).outData = ts.look(0).data+"\n";
107 // function a () { ... };
109 if (ts.look(-1).isTypeN(Script.TOKfunction) && ts.look(1).isTypeN(Script.TOKlparen)) {
111 //println("got = function() ");
114 ts.balance("lparen");
115 ts.balance("lbrace");
116 // if next is not ';' -> make it so...
117 // although this var a=function(){},v,c; causes
118 if (!ts.look(1).isData(';') && !ts.look(1).isData('}') && ts.look(1,true).isLineBreak()) {
119 ts.cur().outData = ts.cur().data+";";
129 if (ts.lookTok(1).data == '=' && ts.lookTok(2).data == '{') {
131 //println("----------*** 3 *** --------------");
134 if (!ts.balance("{") ){
136 print(">>>>>>>>>>>>>>>>>HERE>>>>>>>>>>>>");
139 throw "could not find end lbrace!!!";
141 // if next is not ';' -> make it so...
142 print(ts.lookTok(1).toString());
143 print(ts.lookTok(1,true).toString());
144 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.look(1,true).name=="NEWLINE") {
145 ts.look(0).outData = ts.look(0).data +";";
153 // a = function(....) { }
154 print(ts.lookTok(2).toString());
155 if (ts.lookTok(1).data == '=' && ts.lookTok(2).name == 'FUNCTION' ) {
157 //println("----------*** 3 *** --------------");
161 if (!ts.balance("{") ){
163 print(">>>>>>>>>>>>>>>>>HERE>>>>>>>>>>>>");
166 throw "could not find end lbrace!!!";
168 // if next is not ';' -> make it so...
169 print(ts.lookTok(1).toString());
170 print(ts.lookTok(1,true).toString());
171 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.look(1,true).name=="NEWLINE") {
172 ts.look(0).outData = ts.look(0).data +";";
184 //println("got Token: " + tok.type);
188 switch(tok.data.toUpperCase()) {
189 // things that need space appending
193 // if next item is a identifier..
194 if (ts.lookTok(1).type == "NAME" || ts.lookTok(1).data.match(/^[a-z]+$/i) ) { // as include is a keyword for us!!
195 tok.outData = tok.data + " ";
200 case "RETURN": // if next item is not a semi; (or }
201 if (ts.lookTok(1).data == ';' || ts.lookTok(1).data == '}') {
204 tok.outData = tok.data + " ";
209 case "ELSE": // if next item is not a semi; (or }
210 if (!ts.lookTok(1).name == "IF") {
214 tok.outData = tok.data + " ";
217 case "++": // if previous was a plus or next is a + add a space..
218 case "--": // if previous was a - or next is a - add a space..
220 var p = (tok.data == "--" ? '-' : '+');
222 if (ts.lookTok(1).data == p) {
223 tok.outData = tok.data + " ";
225 if (ts.lookTok(-1).data == p) {
226 tok.outData = " " + tok.data;
231 case "IN": // before and after??
234 tok.outData = " " + tok.data + " ";
237 case "VAR": // always after..
244 tok.outData = tok.data + " ";
248 case "TYPEOF": // what about typeof(
249 if (ts.lookTok(1).data != '(') {
250 tok.outData = tok.data + " ";
254 //remove semicolon before brace --
255 //if(ts.look(1).isTypeN(Script.TOKrbrace)) {
267 // NOW OUTPUT THE THING.
268 //var f = new File(minfile, File.NEW);
272 out.length = ts.slen; // prealloc.
275 var tok = ts.nextTok();
282 if (tok.type == "NAME" && tok.identifier && tok.identifier.mungedValue && tok.identifier.mungedValue.length) {
283 //f.write(tok.identifier.mungedValue);
284 out += tok.identifier.mungedValue;
288 // at this point we can apply a text translation kit...
290 if ((tok.type == 'STRN') && (tok.name== 'DOUBLE_QUOTE')) {
291 if (packer && packer.stringHandler) {
292 out += packer.stringHandler(tok);
297 out += tok.outData !== false ? tok.outData : tok.data;
299 if ((tok.outData == ';') && (out.length - outoff > 255)) {
306 // remove the last ';' !!!
307 if (out.substring(out.length-1) == ';') {
308 return out.substring(0,out.length-1);