/**
 * Copyright (c) 2020-present, Goldman Sachs
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { InstanceValue } from './InstanceValue.js';
import { Multiplicity } from '../packageableElements/domain/Multiplicity.js';
import { hashArray } from '@finos/legend-shared';
import { CORE_HASH_STRUCTURE } from '../../../Core_HashUtils.js';
export class FunctionType {
    /**
     * Currently, we don't do type-inferencing
     *
     * @discrepancy model
     */
    returnType;
    parameters = [];
    returnMultiplicity;
    constructor(returnType, returnMultiplicity) {
        this.returnType = returnType;
        this.returnMultiplicity = returnMultiplicity;
    }
    get hashCode() {
        return hashArray([
            CORE_HASH_STRUCTURE.FUNCTION_TYPE,
            this.returnType?.valueForSerialization ?? '',
            hashArray(this.parameters),
            this.returnMultiplicity,
        ]);
    }
}
export class LambdaFunction {
    functionType;
    /**
     * Engine saves `openVariables` as strings. We save them as a map of var name to the VariableExpression
     * This is so we don't needless recreate VariableExpressions again and can leverage the same VariableExpression as
     * the ones used in LambdaFunction expressions. This is especially useful when handling `let` statements.
     *
     * @discrepancy model
     */
    openVariables = new Map();
    expressionSequence = [];
    constructor(type) {
        this.functionType = type;
    }
    get hashCode() {
        return hashArray([
            CORE_HASH_STRUCTURE.LAMBDA_FUNCTION,
            this.functionType,
            hashArray(Array.from(this.openVariables.keys())),
            hashArray(this.expressionSequence),
        ]);
    }
}
export class LambdaFunctionInstanceValue extends InstanceValue {
    values = [];
    constructor() {
        super(Multiplicity.ONE);
    }
    get hashCode() {
        return hashArray([
            CORE_HASH_STRUCTURE.LAMBDA_FUNCTION_INSTANCE_VALUE,
            this.genericType?.ownerReference.valueForSerialization ?? '',
            this.multiplicity,
            hashArray(this.values),
        ]);
    }
    accept_ValueSpecificationVisitor(visitor) {
        return visitor.visit_LambdaFunctionInstanceValue(this);
    }
}
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