88 lines
2.2 KiB
Dart
88 lines
2.2 KiB
Dart
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import 'package:d4rt/d4rt.dart';
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class VariableSpec {
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final String name;
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final String magnitude;
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static final MAGNITUDELESS = "magnitudeless";
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VariableSpec({required this.name, required this.magnitude});
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@override
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String toString() => 'var($name: $magnitude)';
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@override
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bool operator ==(Object other) =>
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identical(this, other) ||
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other is VariableSpec &&
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runtimeType == other.runtimeType &&
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magnitude == other.magnitude &&
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name == other.name;
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@override
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int get hashCode => Object.hash(magnitude, name);
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}
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class Formula {
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final String name;
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final List<VariableSpec> input;
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final VariableSpec output;
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final String d4rtCode;
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Formula({
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required this.name,
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required this.input,
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required this.output,
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required this.d4rtCode,
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}){
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validate();
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}
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validate() {
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if (name.trim().isEmpty) {
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throw ArgumentError('Formula name cannot be empty');
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}
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}
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@override
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String toString() =>
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'Formula(name: $name, input: $input, output: $output, d4rtCode: $d4rtCode)';
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@override
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bool operator ==(Object other) =>
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identical(this, other) ||
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other is Formula &&
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runtimeType == other.runtimeType &&
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name == other.name &&
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output == other.output &&
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ListEquality().equals(input, other.input) &&
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d4rtCode == other.d4rtCode;
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@override
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int get hashCode =>
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Object.hash(name, ListEquality().hash(input), output, d4rtCode);
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List<String> inputVarNames() => input.map( (v) => v.name ).toList(growable: false);
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factory Formula.fromSetLiteral(Map<String, Object> set ) {
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VariableSpec parseVar(Map<String, String> varSpec ){
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String name = varSpec.get("name");
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String magnitude = varSpec.get("magnitude");
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return VariableSpec(name: name, magnitude: magnitude);
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}
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String name = set.get("name");
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List<Map<String,String>> inputSet = set.get("input");
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List<VariableSpec> input = inputSet.map(parseVar).toList(growable:false);
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Map<String,String> outputSet = set.get("output");
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VariableSpec output = parseVar(outputSet);
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String d4rtCode = set.get("d4rtCode");
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return new Formula(name:name, input:input, output:output, d4rtCode:d4rtCode );
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}
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}
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