init

2025-05-19 20:36:21 -05:00
commit f5303487be
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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ArrayCoder = exports.unpack = exports.pack = void 0;
+const index_js_1 = require("../../utils/index.js");
+const typed_js_1 = require("../typed.js");
+const abstract_coder_js_1 = require("./abstract-coder.js");
+const anonymous_js_1 = require("./anonymous.js");
+/**
+ *  @_ignore
+ */
+function pack(writer, coders, values) {
+    let arrayValues = [];
+    if (Array.isArray(values)) {
+        arrayValues = values;
+    }
+    else if (values && typeof (values) === "object") {
+        let unique = {};
+        arrayValues = coders.map((coder) => {
+            const name = coder.localName;
+            (0, index_js_1.assert)(name, "cannot encode object for signature with missing names", "INVALID_ARGUMENT", { argument: "values", info: { coder }, value: values });
+            (0, index_js_1.assert)(!unique[name], "cannot encode object for signature with duplicate names", "INVALID_ARGUMENT", { argument: "values", info: { coder }, value: values });
+            unique[name] = true;
+            return values[name];
+        });
+    }
+    else {
+        (0, index_js_1.assertArgument)(false, "invalid tuple value", "tuple", values);
+    }
+    (0, index_js_1.assertArgument)(coders.length === arrayValues.length, "types/value length mismatch", "tuple", values);
+    let staticWriter = new abstract_coder_js_1.Writer();
+    let dynamicWriter = new abstract_coder_js_1.Writer();
+    let updateFuncs = [];
+    coders.forEach((coder, index) => {
+        let value = arrayValues[index];
+        if (coder.dynamic) {
+            // Get current dynamic offset (for the future pointer)
+            let dynamicOffset = dynamicWriter.length;
+            // Encode the dynamic value into the dynamicWriter
+            coder.encode(dynamicWriter, value);
+            // Prepare to populate the correct offset once we are done
+            let updateFunc = staticWriter.writeUpdatableValue();
+            updateFuncs.push((baseOffset) => {
+                updateFunc(baseOffset + dynamicOffset);
+            });
+        }
+        else {
+            coder.encode(staticWriter, value);
+        }
+    });
+    // Backfill all the dynamic offsets, now that we know the static length
+    updateFuncs.forEach((func) => { func(staticWriter.length); });
+    let length = writer.appendWriter(staticWriter);
+    length += writer.appendWriter(dynamicWriter);
+    return length;
+}
+exports.pack = pack;
+/**
+ *  @_ignore
+ */
+function unpack(reader, coders) {
+    let values = [];
+    let keys = [];
+    // A reader anchored to this base
+    let baseReader = reader.subReader(0);
+    coders.forEach((coder) => {
+        let value = null;
+        if (coder.dynamic) {
+            let offset = reader.readIndex();
+            let offsetReader = baseReader.subReader(offset);
+            try {
+                value = coder.decode(offsetReader);
+            }
+            catch (error) {
+                // Cannot recover from this
+                if ((0, index_js_1.isError)(error, "BUFFER_OVERRUN")) {
+                    throw error;
+                }
+                value = error;
+                value.baseType = coder.name;
+                value.name = coder.localName;
+                value.type = coder.type;
+            }
+        }
+        else {
+            try {
+                value = coder.decode(reader);
+            }
+            catch (error) {
+                // Cannot recover from this
+                if ((0, index_js_1.isError)(error, "BUFFER_OVERRUN")) {
+                    throw error;
+                }
+                value = error;
+                value.baseType = coder.name;
+                value.name = coder.localName;
+                value.type = coder.type;
+            }
+        }
+        if (value == undefined) {
+            throw new Error("investigate");
+        }
+        values.push(value);
+        keys.push(coder.localName || null);
+    });
+    return abstract_coder_js_1.Result.fromItems(values, keys);
+}
+exports.unpack = unpack;
+/**
+ *  @_ignore
+ */
+class ArrayCoder extends abstract_coder_js_1.Coder {
+    coder;
+    length;
+    constructor(coder, length, localName) {
+        const type = (coder.type + "[" + (length >= 0 ? length : "") + "]");
+        const dynamic = (length === -1 || coder.dynamic);
+        super("array", type, localName, dynamic);
+        (0, index_js_1.defineProperties)(this, { coder, length });
+    }
+    defaultValue() {
+        // Verifies the child coder is valid (even if the array is dynamic or 0-length)
+        const defaultChild = this.coder.defaultValue();
+        const result = [];
+        for (let i = 0; i < this.length; i++) {
+            result.push(defaultChild);
+        }
+        return result;
+    }
+    encode(writer, _value) {
+        const value = typed_js_1.Typed.dereference(_value, "array");
+        if (!Array.isArray(value)) {
+            this._throwError("expected array value", value);
+        }
+        let count = this.length;
+        if (count === -1) {
+            count = value.length;
+            writer.writeValue(value.length);
+        }
+        (0, index_js_1.assertArgumentCount)(value.length, count, "coder array" + (this.localName ? (" " + this.localName) : ""));
+        let coders = [];
+        for (let i = 0; i < value.length; i++) {
+            coders.push(this.coder);
+        }
+        return pack(writer, coders, value);
+    }
+    decode(reader) {
+        let count = this.length;
+        if (count === -1) {
+            count = reader.readIndex();
+            // Check that there is *roughly* enough data to ensure
+            // stray random data is not being read as a length. Each
+            // slot requires at least 32 bytes for their value (or 32
+            // bytes as a link to the data). This could use a much
+            // tighter bound, but we are erroring on the side of safety.
+            (0, index_js_1.assert)(count * abstract_coder_js_1.WordSize <= reader.dataLength, "insufficient data length", "BUFFER_OVERRUN", { buffer: reader.bytes, offset: count * abstract_coder_js_1.WordSize, length: reader.dataLength });
+        }
+        let coders = [];
+        for (let i = 0; i < count; i++) {
+            coders.push(new anonymous_js_1.AnonymousCoder(this.coder));
+        }
+        return unpack(reader, coders);
+    }
+}
+exports.ArrayCoder = ArrayCoder;
+//# sourceMappingURL=array.js.map