@cosmology/ast/module/encoding/proto/from-partial/index.js

Cosmos TypeScript AST generation

import * as t from '@babel/types';
import { getFieldOptionality, getOneOfs } from '..';
import { identifier, objectMethod } from '../../../utils';
import { getBaseCreateTypeFuncName } from '../types';
import { arrayTypes, fromPartial } from './utils';
const needsImplementation = (name, field) => {
    throw new Error(`need to implement fromPartial (${field.type} rules[${field.rule}] name[${name}])`);
};
export const fromPartialMethodFields = (context, name, proto) => {
    const oneOfs = getOneOfs(proto);
    const fields = Object.keys(proto.fields ?? {}).map(fieldName => {
        const field = {
            name: fieldName,
            ...proto.fields[fieldName]
        };
        const isOneOf = oneOfs.includes(fieldName);
        const isOptional = getFieldOptionality(context, field, isOneOf);
        const args = {
            context,
            field,
            isOneOf,
            isOptional
        };
        if (field.rule === 'repeated') {
            switch (field.type) {
                case 'string':
                    return fromPartial.array(args, arrayTypes.string());
                case 'bool':
                    return fromPartial.array(args, arrayTypes.bool());
                case 'bytes':
                    return fromPartial.array(args, arrayTypes.bytes());
                case 'float':
                    return fromPartial.array(args, arrayTypes.float());
                case 'double':
                    return fromPartial.array(args, arrayTypes.double());
                case 'int32':
                    return fromPartial.array(args, arrayTypes.int32());
                case 'sint32':
                    return fromPartial.array(args, arrayTypes.sint32());
                case 'uint32':
                    return fromPartial.array(args, arrayTypes.uint32());
                case 'fixed32':
                    return fromPartial.array(args, arrayTypes.fixed32());
                case 'sfixed32':
                    return fromPartial.array(args, arrayTypes.sfixed32());
                case 'int64':
                    return fromPartial.array(args, arrayTypes.int64(args));
                case 'sint64':
                    return fromPartial.array(args, arrayTypes.sint64(args));
                case 'uint64':
                    return fromPartial.array(args, arrayTypes.uint64(args));
                case 'fixed64':
                    return fromPartial.array(args, arrayTypes.fixed64(args));
                case 'sfixed64':
                    return fromPartial.array(args, arrayTypes.sfixed64(args));
                default:
                    switch (field.parsedType.type) {
                        case 'Enum':
                            return fromPartial.array(args, arrayTypes.enum());
                        case 'Type':
                            return fromPartial.array(args, arrayTypes.type(args));
                    }
                    return needsImplementation(fieldName, field);
            }
        }
        if (field.keyType) {
            switch (field.keyType) {
                case 'string':
                case 'int32':
                case 'sint32':
                case 'uint32':
                case 'fixed32':
                case 'sfixed32':
                case 'int64':
                case 'sint64':
                case 'uint64':
                case 'fixed64':
                case 'sfixed64':
                    return fromPartial.keyHash(args);
                default:
                    return needsImplementation(fieldName, field);
            }
        }
        switch (field.type) {
            case 'string':
                return fromPartial.string(args);
            case 'bytes':
                return fromPartial.bytes(args);
            case 'bool':
                return fromPartial.bool(args);
            case 'double':
                return fromPartial.double(args);
            case 'float':
                return fromPartial.float(args);
            case 'int32':
                return fromPartial.int32(args);
            case 'sint32':
                return fromPartial.sint32(args);
            case 'uint32':
                return fromPartial.uint32(args);
            case 'fixed32':
                return fromPartial.fixed32(args);
            case 'sfixed32':
                return fromPartial.sfixed32(args);
            case 'int64':
                return fromPartial.int64(args);
            case 'sint64':
                return fromPartial.sint64(args);
            case 'uint64':
                return fromPartial.uint64(args);
            case 'fixed64':
                return fromPartial.fixed64(args);
            case 'sfixed64':
                return fromPartial.sfixed64(args);
            // TODO: handle Date and Duration choices
            case 'google.protobuf.Duration':
            case 'Duration':
                return fromPartial.duration(args);
            case 'google.protobuf.Timestamp':
            case 'Timestamp':
                return fromPartial.timestamp(args);
            default:
                switch (field.parsedType.type) {
                    case 'Enum':
                        return fromPartial.enum(args);
                    case 'Type':
                        return fromPartial.type(args);
                }
                return needsImplementation(fieldName, field);
        }
    });
    return fields;
};
export const fromPartialMethod = (context, name, proto) => {
    const useDeepPartial = context.pluginValue('prototypes.typingsFormat.useDeepPartial');
    let partialName = 'Partial';
    if (useDeepPartial) {
        context.addUtil('DeepPartial');
        partialName = 'DeepPartial';
    }
    const fields = fromPartialMethodFields(context, name, proto);
    let varName = 'object';
    if (!fields.length) {
        varName = '_';
    }
    let typeParameters = undefined;
    let param = null;
    const useExact = context.pluginValue('prototypes.typingsFormat.useExact');
    if (useExact === true) {
        context.addUtil('Exact');
        // type params
        typeParameters = t.tsTypeParameterDeclaration([
            t.tsTypeParameter(t.tsTypeReference(t.identifier('Exact'), t.tsTypeParameterInstantiation([
                t.tsTypeReference(t.identifier(partialName), t.tsTypeParameterInstantiation([
                    t.tsTypeReference(t.identifier(name))
                ])),
                t.tsTypeReference(t.identifier('I'))
            ])), null, 'I')
        ]);
        // param
        param = identifier(varName, t.tsTypeAnnotation(t.tsTypeReference(t.identifier('I'))));
    }
    else {
        // param
        param = identifier(varName, t.tsTypeAnnotation(t.tsTypeReference(t.identifier(partialName), t.tsTypeParameterInstantiation([
            t.tsTypeReference(t.identifier(name))
        ]))));
    }
    return objectMethod('method', t.identifier('fromPartial'), [
        param
    ], t.blockStatement([
        // init
        t.variableDeclaration('const', [
            t.variableDeclarator(t.identifier('message'), t.callExpression(t.identifier(getBaseCreateTypeFuncName(name)), []))
        ]),
        ...fields,
        // RETURN
        t.returnStatement(t.identifier('message'))
    ]), false, false, false, t.tsTypeAnnotation(t.tsTypeReference(t.identifier(name))), typeParameters);
};