Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / protobufjs / src / encoder.js

diff --git a/legacy-libs/protobufjs/src/encoder.js b/legacy-libs/protobufjs/src/encoder.js
new file mode 100644 (file)
index 0000000..c803e99
--- /dev/null
+++ b/legacy-libs/protobufjs/src/encoder.js
@@ -0,0 +1,100 @@
+"use strict";
+module.exports = encoder;
+
+var Enum     = require("./enum"),
+    types    = require("./types"),
+    util     = require("./util");
+
+/**
+ * Generates a partial message type encoder.
+ * @param {Codegen} gen Codegen instance
+ * @param {Field} field Reflected field
+ * @param {number} fieldIndex Field index
+ * @param {string} ref Variable reference
+ * @returns {Codegen} Codegen instance
+ * @ignore
+ */
+function genTypePartial(gen, field, fieldIndex, ref) {
+    return field.resolvedType.group
+        ? gen("types[%i].encode(%s,w.uint32(%i)).uint32(%i)", fieldIndex, ref, (field.id << 3 | 3) >>> 0, (field.id << 3 | 4) >>> 0)
+        : gen("types[%i].encode(%s,w.uint32(%i).fork()).ldelim()", fieldIndex, ref, (field.id << 3 | 2) >>> 0);
+}
+
+/**
+ * Generates an encoder specific to the specified message type.
+ * @param {Type} mtype Message type
+ * @returns {Codegen} Codegen instance
+ */
+function encoder(mtype) {
+    /* eslint-disable no-unexpected-multiline, block-scoped-var, no-redeclare */
+    var gen = util.codegen(["m", "w"], mtype.name + "$encode")
+    ("if(!w)")
+        ("w=Writer.create()");
+
+    var i, ref;
+
+    // "when a message is serialized its known fields should be written sequentially by field number"
+    var fields = /* initializes */ mtype.fieldsArray.slice().sort(util.compareFieldsById);
+
+    for (var i = 0; i < fields.length; ++i) {
+        var field    = fields[i].resolve(),
+            index    = mtype._fieldsArray.indexOf(field),
+            type     = field.resolvedType instanceof Enum ? "int32" : field.type,
+            wireType = types.basic[type];
+            ref      = "m" + util.safeProp(field.name);
+
+        // Map fields
+        if (field.map) {
+            gen
+    ("if(%s!=null&&Object.hasOwnProperty.call(m,%j)){", ref, field.name) // !== undefined && !== null
+        ("for(var ks=Object.keys(%s),i=0;i<ks.length;++i){", ref)
+            ("w.uint32(%i).fork().uint32(%i).%s(ks[i])", (field.id << 3 | 2) >>> 0, 8 | types.mapKey[field.keyType], field.keyType);
+            if (wireType === undefined) gen
+            ("types[%i].encode(%s[ks[i]],w.uint32(18).fork()).ldelim().ldelim()", index, ref); // can't be groups
+            else gen
+            (".uint32(%i).%s(%s[ks[i]]).ldelim()", 16 | wireType, type, ref);
+            gen
+        ("}")
+    ("}");
+
+            // Repeated fields
+        } else if (field.repeated) { gen
+    ("if(%s!=null&&%s.length){", ref, ref); // !== undefined && !== null
+
+            // Packed repeated
+            if (field.packed && types.packed[type] !== undefined) { gen
+
+        ("w.uint32(%i).fork()", (field.id << 3 | 2) >>> 0)
+        ("for(var i=0;i<%s.length;++i)", ref)
+            ("w.%s(%s[i])", type, ref)
+        ("w.ldelim()");
+
+            // Non-packed
+            } else { gen
+
+        ("for(var i=0;i<%s.length;++i)", ref);
+                if (wireType === undefined)
+            genTypePartial(gen, field, index, ref + "[i]");
+                else gen
+            ("w.uint32(%i).%s(%s[i])", (field.id << 3 | wireType) >>> 0, type, ref);
+
+            } gen
+    ("}");
+
+        // Non-repeated
+        } else {
+            if (field.optional) gen
+    ("if(%s!=null&&Object.hasOwnProperty.call(m,%j))", ref, field.name); // !== undefined && !== null
+
+            if (wireType === undefined)
+        genTypePartial(gen, field, index, ref);
+            else gen
+        ("w.uint32(%i).%s(%s)", (field.id << 3 | wireType) >>> 0, type, ref);
+
+        }
+    }
+
+    return gen
+    ("return w");
+    /* eslint-enable no-unexpected-multiline, block-scoped-var, no-redeclare */
+}