[dotnet] [bidi] Simplify conversion to LocalValue

dotnet/src/webdriver/BiDi/Modules/Script/LocalValue.cs

@@ -17,8 +17,14 @@
 // under the License.
 // </copyright>
 
+using System;
 using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Numerics;
+using System.Text.Json.Nodes;
 using System.Text.Json.Serialization;
+using System.Text.RegularExpressions;
 
 namespace OpenQA.Selenium.BiDi.Modules.Script;
 
@@ -38,22 +44,37 @@ namespace OpenQA.Selenium.BiDi.Modules.Script;
 [JsonDerivedType(typeof(SetLocalValue), "set")]
 public abstract record LocalValue
 {
-    public static implicit operator LocalValue(int value) { return new NumberLocalValue(value); }
-    public static implicit operator LocalValue(string? value) { return value is null ? new NullLocalValue() : new StringLocalValue(value); }
+    public static implicit operator LocalValue(bool? value) { return value is bool b ? (b ? True : False) : Null; }
+    public static implicit operator LocalValue(int? value) { return value is int i ? Number(i) : Null; }
+    public static implicit operator LocalValue(double? value) { return value is double d ? Number(d) : Null; }
+    public static implicit operator LocalValue(string? value) { return value is null ? Null : String(value); }
 
     // TODO: Extend converting from types
     public static LocalValue ConvertFrom(object? value)
     {
         switch (value)
         {
-            case LocalValue:
-                return (LocalValue)value;
+            case LocalValue localValue:
+                return localValue;
+
             case null:
-                return new NullLocalValue();
-            case int:
-                return (int)value;
-            case string:
-                return (string)value;
+                return Null;
+
+            case bool b:
+                return b ? True : False;
+
+            case int i:
+                return Number(i);
+
+            case double d:
+                return Number(d);
+
+            case string str:
+                return String(str);
+
+            case IEnumerable<object?> list:
+                return Array(list.Select(ConvertFrom).ToList());
+
             case object:
                 {
                     var type = value.GetType();
@@ -67,10 +88,217 @@ public static LocalValue ConvertFrom(object? value)
                         values.Add([property.Name, ConvertFrom(property.GetValue(value))]);
                     }
 
-                    return new ObjectLocalValue(values);
+                    return Object(values);
                 }
         }
     }
+
+    private static readonly BigInteger MaxDouble = new BigInteger(double.MaxValue);
+    private static readonly BigInteger MinDouble = new BigInteger(double.MinValue);
+
+    public static LocalValue ConvertFrom(JsonNode? node)
+    {
+        if (node is null)
+        {
+            return Null;
+        }
+
+        switch (node.GetValueKind())
+        {
+            case System.Text.Json.JsonValueKind.Null:
+                return Null;
+
+            case System.Text.Json.JsonValueKind.True:
+                return True;
+
+            case System.Text.Json.JsonValueKind.False:
+                return False;
+
+            case System.Text.Json.JsonValueKind.String:
+                return String(node.ToString());
+
+            case System.Text.Json.JsonValueKind.Number:
+                {
+                    var numberString = node.ToString();
+
+                    var bigNumber = BigInteger.Parse(numberString);
+
+                    if (bigNumber > MaxDouble || bigNumber < MinDouble)
+                    {
+                        return BigInt(bigNumber);
+                    }
+
+                    return Number(double.Parse(numberString));
+                }
+
+            case System.Text.Json.JsonValueKind.Array:
+                return Array(node.AsArray().Select(ConvertFrom));
+
+            case System.Text.Json.JsonValueKind.Object:
+                var convertedToListForm = node.AsObject().Select(property => new LocalValue[] { String(property.Key), ConvertFrom(property.Value) }).ToList();
+                return Object(convertedToListForm);
+
+            default:
+                throw new InvalidOperationException("Invalid JSON node");
+        }
+    }
+
+    public static ChannelLocalValue Channel(ChannelLocalValue.ChannelProperties options)
+    {
+        return new ChannelLocalValue(options);
+    }
+
+    public static ArrayLocalValue Array(IEnumerable<LocalValue> values)
+    {
+        return new ArrayLocalValue(values);
+    }
+
+    public static SetLocalValue Set(HashSet<LocalValue> values)
+    {
+        return new SetLocalValue(values);
+    }
+
+    public static ObjectLocalValue Object(IEnumerable<IEnumerable<LocalValue>> values)
+    {
+        return new ObjectLocalValue(values);
+    }
+
+    public static ObjectLocalValue Object(IDictionary<string, LocalValue> values)
+    {
+        var convertedValues = values.Select(PairToList).ToList();
+        return new ObjectLocalValue(convertedValues);
+    }
+
+    public static MapLocalValue Map(IEnumerable<IEnumerable<LocalValue>> values)
+    {
+        return new MapLocalValue(values);
+    }
+
+    public static MapLocalValue Map(IDictionary<LocalValue, LocalValue> values)
+    {
+        var convertedValues = values.Select(PairToList).ToList();
+        return new MapLocalValue(convertedValues);
+    }
+
+    private static LocalValue[] PairToList(KeyValuePair<string, LocalValue> pair)
+    {
+        return [String(pair.Key), pair.Value];
+    }
+
+    private static LocalValue[] PairToList(KeyValuePair<LocalValue, LocalValue> pair)
+    {
+        return [pair.Key, pair.Value];
+    }
+
+    public static BigIntLocalValue BigInt(BigInteger value)
+    {
+        return new BigIntLocalValue(value.ToString());
+    }
+
+    public static DateLocalValue Date(DateTime value)
+    {
+        return new DateLocalValue(value.ToString("o"));
+    }
+
+    public static LocalValue String(string? value)
+    {
+        if (value is null)
+        {
+            return Null;
+        }
+
+        return new StringLocalValue(value);
+    }
+
+    public static NumberLocalValue Number(double value)
+    {
+        return new NumberLocalValue(value);
+    }
+
+    public static BooleanLocalValue True { get; } = new BooleanLocalValue(true);
+
+    public static BooleanLocalValue False { get; } = new BooleanLocalValue(false);
+
+    public static NullLocalValue Null { get; } = new NullLocalValue();
+
+    public static UndefinedLocalValue Undefined { get; } = new UndefinedLocalValue();
+    public static RegExpLocalValue Regex(string pattern, string? flags = null)
+    {
+        if (pattern is null)
+        {
+            throw new ArgumentNullException(nameof(pattern));
+        }
+
+        return new RegExpLocalValue(new RegExpValue(pattern) { Flags = flags });
+    }
+
+    /// <summary>
+    /// Converts a .NET Regex into a BiDi Regex
+    /// </summary>
+    /// <param name="regex">A .NET Regex.</param>
+    /// <returns>A BiDi Regex.</returns>
+    /// <remarks>
+    /// Note that the .NET regular expression engine does not work the same as the JavaScript engine.
+    /// To minimize the differences between the two engines, it is recommended to enabled the <see cref="RegexOptions.ECMAScript"/> option.
+    /// </remarks>
+    public static RegExpLocalValue Regex(Regex regex)
+    {
+        if (regex is null)
+        {
+            throw new ArgumentNullException(nameof(regex));
+        }
+
+        RegexOptions options = regex.Options;
+
+        if (options == RegexOptions.None)
+        {
+            return new RegExpLocalValue(new RegExpValue(regex.ToString()));
+        }
+
+        string flags = string.Empty;
+
+        const RegexOptions NonBacktracking = (RegexOptions)1024;
+#if NET8_0_OR_GREATER
+        Debug.Assert(NonBacktracking == RegexOptions.NonBacktracking);
+#endif
+
+        const RegexOptions NonApplicableOptions = RegexOptions.Compiled | NonBacktracking;
+
+        const RegexOptions UnsupportedOptions =
+            RegexOptions.ExplicitCapture |
+            RegexOptions.IgnorePatternWhitespace |
+            RegexOptions.RightToLeft |
+            RegexOptions.CultureInvariant;
+
+        options &= ~NonApplicableOptions;
+
+        if ((options & UnsupportedOptions) != 0)
+        {
+            throw new NotSupportedException($"The selected RegEx options are not supported in BiDi: {options & UnsupportedOptions}");
+        }
+
+        if ((options & RegexOptions.IgnoreCase) != 0)
+        {
+            flags += "i";
+            options = options & ~RegexOptions.IgnoreCase;
+        }
+
+        if ((options & RegexOptions.Multiline) != 0)
+        {
+            options = options & ~RegexOptions.Multiline;
+            flags += "m";
+        }
+
+        if ((options & RegexOptions.Singleline) != 0)
+        {
+            options = options & ~RegexOptions.Singleline;
+            flags += "s";
+        }
+
+        Debug.Assert(options == RegexOptions.None);
+
+        return new RegExpLocalValue(new RegExpValue(regex.ToString()) { Flags = flags });
+    }
 }
 
 public abstract record PrimitiveProtocolLocalValue : LocalValue;