Add iterators

lib/modules/@dougal/binary/classes.js

@@ -503,6 +503,37 @@ class DougalBinaryBundle extends ArrayBuffer {
 		return ab;
 	}
 
+	get records () {
+		const data = [];
+		for (const record of this) {
+			data.push(record.slice(1));
+		}
+		return data;
+	}
+
+	[Symbol.iterator]() {
+		const chunks = this.chunks();
+		let chunkIndex = 0;
+		let chunkIterator = chunks.length > 0 ? chunks[0][Symbol.iterator]() : null;
+
+		return {
+			next() {
+				if (!chunkIterator) {
+					return { done: true };
+				}
+
+				let result = chunkIterator.next();
+				while (result.done && chunkIndex < chunks.length - 1) {
+					chunkIndex++;
+					chunkIterator = chunks[chunkIndex][Symbol.iterator]();
+					result = chunkIterator.next();
+				}
+
+				return result;
+			}
+		};
+	}
+
 }
 
 
@@ -707,6 +738,21 @@ class DougalBinaryChunkSequential extends ArrayBuffer {
 
 		return arr;
 	}
+
+	[Symbol.iterator]() {
+		let index = 0;
+		const chunk = this;
+		return {
+			next() {
+				if (index < chunk.jCount) {
+					return { value: chunk.getRecord(index++), done: false };
+				} else {
+					return { done: true };
+				}
+			}
+		};
+	}
+
 }
 
 
@@ -901,6 +947,21 @@ class DougalBinaryChunkInterleaved extends ArrayBuffer {
 
 		return arr;
 	}
+
+	[Symbol.iterator]() {
+		let index = 0;
+		const chunk = this;
+		return {
+			next() {
+				if (index < chunk.jCount) {
+					return { value: chunk.getRecord(index++), done: false };
+				} else {
+					return { done: true };
+				}
+			}
+		};
+	}
+
 }