@truffle/codec/dist/lib/memory/allocate/index.js

Library for encoding and decoding smart contract data

"use strict";
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    if (k2 === undefined) k2 = k;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.isSkippedInMemoryStructs = exports.getMemoryAllocations = void 0;
const debug_1 = __importDefault(require("debug"));
const debug = (0, debug_1.default)("codec:memory:allocate");
const Evm = __importStar(require("../../evm"));
function getMemoryAllocations(userDefinedTypes) {
    let allocations = {};
    for (const dataType of Object.values(userDefinedTypes)) {
        if (dataType.typeClass === "struct") {
            allocations[dataType.id] = allocateStruct(dataType);
        }
    }
    return allocations;
}
exports.getMemoryAllocations = getMemoryAllocations;
function isSkippedInMemoryStructs(dataType) {
    if (dataType.typeClass === "mapping") {
        return true;
    }
    else if (dataType.typeClass === "array") {
        return isSkippedInMemoryStructs(dataType.baseType);
    }
    else {
        return false;
    }
}
exports.isSkippedInMemoryStructs = isSkippedInMemoryStructs;
//unlike in storage and calldata, we'll just return the one allocation, nothing fancy
//that's because allocating one struct can never necessitate allocating another
function allocateStruct(dataType) {
    let memberAllocations = [];
    let position = 0;
    for (const { name, type: memberType } of dataType.memberTypes) {
        const length = isSkippedInMemoryStructs(memberType)
            ? 0
            : Evm.Utils.WORD_SIZE;
        memberAllocations.push({
            name,
            type: memberType,
            pointer: {
                location: "memory",
                start: position,
                length
            }
        });
        position += length;
    }
    return {
        members: memberAllocations
    };
}
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