Add assertion decorations for various numeric types.

config-serializer/assert.ts

@@ -1,4 +1,32 @@
 function assertUInt8(target: any, key: string) {
+    return assertInteger(target, key, 0, 255);
+}
+
+function assertInt8(target: any, key: string) {
+    return assertInteger(target, key, -128, 127);
+}
+
+function assertUInt16(target: any, key: string) {
+    return assertInteger(target, key, 0, 65535);
+}
+
+function assertInt16(target: any, key: string) {
+    return assertInteger(target, key, -32768, 32767);
+}
+
+function assertUInt32(target: any, key: string) {
+    return assertInteger(target, key, 0, 4294967295);
+}
+
+function assertInt32(target: any, key: string) {
+    return assertInteger(target, key, -2147483648, 2147483647);
+}
+
+function assertCompactLength(target: any, key: string) {
+    return assertUInt16(target, key)
+}
+
+function assertInteger(target: any, key: string, min: number, max: number) {
     let val = this[key];
     if (delete this[key]) {
         Object.defineProperty(target, key, {
@@ -6,8 +34,9 @@ function assertUInt8(target: any, key: string) {
                 return val;
             },
             set: function (newVal) {
-                if (newVal < 0 || newVal > 255) {
-                    throw `Invalid ${target.constructor.name}.${key}: ${newVal} is not uint8`;
+                if (newVal < min || newVal > max) {
+                    throw `${target.constructor.name}.${key}: ` +
+                          `Integer ${newVal} is outside the valid [${min}, ${max}] interval`;
                 }
                 val = newVal;
             },
@@ -27,7 +56,7 @@ function assertEnum<E>(enumerated: E) {
                 },
                 set: function (newVal) {
                     if (enumerated[newVal] === undefined) {
-                        throw `Invalid ${target.constructor.name}.${key}: ${newVal} is not enum`;
+                        throw `${target.constructor.name}.${key}: ${newVal} is not enum`;
                     }
                     val = newVal;
                 },