wildfire chat server source initial submit

2019-03-16 17:04:23 +08:00
parent e59217bd10
commit cab3ca0916
1466 changed files with 528862 additions and 15919 deletions
@@ -0,0 +1,106 @@
+"use strict";
+module.exports = decoder;
+
+var Enum    = require("./enum"),
+    types   = require("./types"),
+    util    = require("./util");
+
+function missing(field) {
+    return "missing required '" + field.name + "'";
+}
+
+/**
+ * Generates a decoder specific to the specified message type.
+ * @param {Type} mtype Message type
+ * @returns {Codegen} Codegen instance
+ */
+function decoder(mtype) {
+    /* eslint-disable no-unexpected-multiline */
+    var gen = util.codegen(["r", "l"], mtype.name + "$decode")
+    ("if(!(r instanceof Reader))")
+        ("r=Reader.create(r)")
+    ("var c=l===undefined?r.len:r.pos+l,m=new this.ctor" + (mtype.fieldsArray.filter(function(field) { return field.map; }).length ? ",k" : ""))
+    ("while(r.pos<c){")
+        ("var t=r.uint32()");
+    if (mtype.group) gen
+        ("if((t&7)===4)")
+            ("break");
+    gen
+        ("switch(t>>>3){");
+
+    var i = 0;
+    for (; i < /* initializes */ mtype.fieldsArray.length; ++i) {
+        var field = mtype._fieldsArray[i].resolve(),
+            type  = field.resolvedType instanceof Enum ? "int32" : field.type,
+            ref   = "m" + util.safeProp(field.name); gen
+            ("case %i:", field.id);
+
+        // Map fields
+        if (field.map) { gen
+                ("r.skip().pos++") // assumes id 1 + key wireType
+                ("if(%s===util.emptyObject)", ref)
+                    ("%s={}", ref)
+                ("k=r.%s()", field.keyType)
+                ("r.pos++"); // assumes id 2 + value wireType
+            if (types.long[field.keyType] !== undefined) {
+                if (types.basic[type] === undefined) gen
+                ("%s[typeof k===\"object\"?util.longToHash(k):k]=types[%i].decode(r,r.uint32())", ref, i); // can't be groups
+                else gen
+                ("%s[typeof k===\"object\"?util.longToHash(k):k]=r.%s()", ref, type);
+            } else {
+                if (types.basic[type] === undefined) gen
+                ("%s[k]=types[%i].decode(r,r.uint32())", ref, i); // can't be groups
+                else gen
+                ("%s[k]=r.%s()", ref, type);
+            }
+
+        // Repeated fields
+        } else if (field.repeated) { gen
+
+                ("if(!(%s&&%s.length))", ref, ref)
+                    ("%s=[]", ref);
+
+            // Packable (always check for forward and backward compatiblity)
+            if (types.packed[type] !== undefined) gen
+                ("if((t&7)===2){")
+                    ("var c2=r.uint32()+r.pos")
+                    ("while(r.pos<c2)")
+                        ("%s.push(r.%s())", ref, type)
+                ("}else");
+
+            // Non-packed
+            if (types.basic[type] === undefined) gen(field.resolvedType.group
+                    ? "%s.push(types[%i].decode(r))"
+                    : "%s.push(types[%i].decode(r,r.uint32()))", ref, i);
+            else gen
+                    ("%s.push(r.%s())", ref, type);
+
+        // Non-repeated
+        } else if (types.basic[type] === undefined) gen(field.resolvedType.group
+                ? "%s=types[%i].decode(r)"
+                : "%s=types[%i].decode(r,r.uint32())", ref, i);
+        else gen
+                ("%s=r.%s()", ref, type);
+        gen
+                ("break");
+    // Unknown fields
+    } gen
+            ("default:")
+                ("r.skipType(t&7)")
+                ("break")
+
+        ("}")
+    ("}");
+
+    // Field presence
+    for (i = 0; i < mtype._fieldsArray.length; ++i) {
+        var rfield = mtype._fieldsArray[i];
+        if (rfield.required) gen
+    ("if(!m.hasOwnProperty(%j))", rfield.name)
+        ("throw util.ProtocolError(%j,{instance:m})", missing(rfield));
+    }
+
+    return gen
+    ("return m");
+    /* eslint-enable no-unexpected-multiline */
+}