From a1e6c7edfe43310769e230822734a2bbb191576e Mon Sep 17 00:00:00 2001
From: Alan Knowles <alan@roojs.com>
Date: Mon, 2 Nov 2015 17:49:30 +0800
Subject: [PATCH] JSDOC/Collapse.vala

---
 JSDOC/Collapse.vala | 260 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 260 insertions(+)
 create mode 100644 JSDOC/Collapse.vala

diff --git a/JSDOC/Collapse.vala b/JSDOC/Collapse.vala
new file mode 100644
index 0000000..07b9d0b
--- /dev/null
+++ b/JSDOC/Collapse.vala
@@ -0,0 +1,260 @@
+//<script type="text/javscript">
+const XObject = imports.XObject.XObject;
+
+ 
+const console     = imports.console.console; 
+
+// make sure parent is loaded..
+const TokenStream = imports.TokenStream.TokenStream;
+
+/**
+ * 
+ * base class for parsing segments of token array..
+ * 
+ * 
+ * We want to make parsing the whole thing easy..
+ * 
+ * so we do various tricks:
+ * 
+ * 
+ * a) white space collased
+ *    wsPrefix 
+ * b)  toks
+ *     { } - collapse into first element.
+       ( ) - collapse into first element.
+       [ ] - collapse into first element.
+ * c) items = , seperation within the above..
+ * 
+ * usage: x = new Collapse(token_array)
+ * 
+ * 
+ * 
+ * 
+ */ 
+ 
+const Collapse = XObject.define(
+    function (ar)
+    {
+        Collapse.superclass.constructor.call(this, ar);
+        
+        this.spaces();
+        ar = this.collapse(this.tokens);
+        
+        this.tokens = ar;
+        
+       // console.dump(ar);
+        
+    }, 
+    TokenStream, 
+    {
+    
+        spaces : function () {
+            var ar = [];
+            var pref = [];
+            
+            var tok;
+            
+            for (var i = 0; i < this.tokens.length; i ++) {
+                tok = this.tokens[i];
+                if (tok.is("COMM") || tok.is("WHIT")) {
+                    pref.push(tok);
+                    continue;
+                }
+                tok.prefix = '';
+                if (pref.length) {
+                    pref.forEach( function(e) {
+                        if (!e) {
+                            return;
+                        }
+                        tok.prefix += e.data;
+                    })
+                }
+                
+                ar.push(tok);
+                pref=  [];
+                
+            }
+            this.tokens = ar;
+            
+        },
+        collapse : function(ar) {
+            
+            var st = new  TokenStream(ar);
+            var ret = [];
+            
+            while (true) {
+                var  tok = st.look(1,true);
+                if (!tok || !tok.is) {
+                  //  Seed.print(TokenStream.toString(ret));
+                    return ret;
+                }
+                // console.log(tok.data);
+                switch(tok.type) {
+                    case "VOID": 
+                        return ret; //EOF
+                        
+                        
+                    case "KEYW": 
+                    case "TOKN":
+                    case "NAME":
+                    case "STRN":
+                    case "NUMB":
+                    case "REGX":
+                        ret.push(st.next(1));
+                        continue;
+                        
+                    case "PUNC":
+                        switch (tok.data) {
+                            case "[":
+                            case "{":
+                            case "(":
+                                
+                                var start = st.cursor;
+                                st.next(1);
+                                var add = st.balance(tok.data);
+                                if (!add) {
+                                    console.dump(tok);
+                                    console.dump(start + '...' + st.cursor);
+                                    console.dump(st.tokens);
+                                 
+                                }
+                                if (add) {
+                                    add.shift();
+                                }
+                                //Seed.print("ADD");
+                                //Seed.print(JSON.stringify(add, null,4));
+                                
+                                
+                                
+                                var toks = add ? this.collapse(add) : [];
+                                tok.items = false;
+                                tok.props = false;
+                                
+                                
+                                
+                                if (tok.data != '{') {
+                                    // paramters or array elements..
+                                    tok.items = this.toItems(toks, [',']);
+                                } else {
+                                    // check for types.. it could be a list of statements.. or object
+                                    
+                                    var ost = new  TokenStream(toks);
+                                    //console.dump(ost.look(2,true) );
+                                    if (ost.look(2,true) && ost.look(2,true).data == ":") {
+                                        tok.props = this.toProps(toks);
+                                    } else {
+                                        // list of statemetns..
+                                        tok.items = this.toItems(toks,[ ';', '{'] );;
+                                    }
+                                    
+                                    
+                                }
+                                 
+                                
+                                
+                                
+                                
+                                
+                                
+                                //Seed.print(" ADD : " + add.length  +  " ITEMS: " + tok.items.length);
+                                
+                                ret.push(tok);
+                                
+                                continue;
+                   
+                            default:
+                                ret.push(st.next(1));
+                                continue;
+                        }
+                        Seed.print("OOPS");
+                        continue;
+                    default : 
+                        Seed.print("OOPS" + tok.type);
+                        continue;
+                }
+            }
+                
+                
+            
+            
+            
+            
+            
+            
+            
+            
+        },
+        toItems : function(ar,sep)
+        {
+            var ret = [];
+            var g = [];
+              
+            for (var i = 0; i < ar.length; i ++) {
+                if (sep.indexOf(ar[i].data) < 0) {
+                    g.push(ar[i]);
+                    continue;
+                }
+                // var a=..., b =...
+                if ((ar[i].data != ';') && g.length && (g[0].name == "VAR")) {;
+                    g.push(ar[i]);
+                    continue;
+                }
+                
+                g.push(ar[i]);
+                ret.push(g);
+                g = [];
+                
+            }
+            // last..
+            if (g.length) {
+                ret.push(g);
+            }
+            return ret;
+            
+        },
+        toProps : function(ar)
+        {
+            
+            var ret = { }
+               
+            var g = { key : '', val: [] }
+               
+            
+            var k = '';
+            var state = 0;
+            for (var i = 0; i < ar.length; i ++) {
+                
+                switch(state) {
+                    case 0:
+                        k = ar[i].data;
+                        g.key = ar[i];
+                        state = 1;
+                        continue;
+                    case 1:
+                        state =2; // should be ':'
+                        continue;
+                    case 2:
+                        g.val.push(ar[i]);
+                        if (ar[i].data != ',') {
+                            continue;
+                        }
+                        ret[k] = g;
+                        g = { key : '', val: [] }
+                        state = 0;
+                        continue;
+                   
+                }
+            }
+             // last.. - if g.val.length is 0 then it's a trailing ','...
+             // we should really throw a syntax error in that case..
+            if (k.length && g.val.length) {
+                ret[k] = g;
+            }
+            return ret;
+            
+            
+        }
+
+    
+    
+});
-- 
2.39.2