Renamed StringLiteral to MemoryLiteral to avoid public API conflict w…

…ith the same name. Added parsers for the various Rangers. Removed lambda based Checkers; will be specialized nodes going forward. I have a different approach in mind for what lambda checkers originally did.

Stringier.Patterns/Alternator.cs

@@ -54,7 +54,7 @@ public override Pattern Many() {
 
 		/// <inheritdoc/>
 		[return: NotNull]
-		public override Pattern Or([AllowNull] String other) => other is not null ? new ChainAlternator(Left, Right, new StringLiteral(other)) : this;
+		public override Pattern Or([AllowNull] String other) => other is not null ? new ChainAlternator(Left, Right, new MemoryLiteral(other)) : this;
 		/// <inheritdoc/>
 		protected internal override void Consume(ReadOnlyMemory<Char> source, ref Int32 location, [AllowNull, MaybeNull] out Exception exception, [AllowNull] IAdd<Capture> trace) {
 			Left.Consume(source, ref location, out exception, trace);

Stringier.Patterns/Bias.cs

@@ -0,0 +1,16 @@
+namespace Stringier.Patterns {
+	/// <summary>
+	/// Word letter bias, used by <see cref="WordChecker"/>.
+	/// </summary>
+	public enum Bias {
+		/// <summary>
+		/// Bias towards the head
+		/// </summary>
+		Head,
+
+		/// <summary>
+		/// Bias towards the tail
+		/// </summary>
+		Tail,
+	}
+}

Stringier.Patterns/ChainAlternator.cs

@@ -88,7 +88,7 @@ public override Pattern Or([AllowNull] Pattern other) {
 
 		/// <inheritdoc/>
 		[return: NotNull]
-		public override Pattern Or([AllowNull] String other) => other is not null ? new ChainAlternator(Patterns, new StringLiteral(other)) : this;
+		public override Pattern Or([AllowNull] String other) => other is not null ? new ChainAlternator(Patterns, new MemoryLiteral(other)) : this;
 		/// <inheritdoc/>
 		protected internal override void Consume(ReadOnlyMemory<Char> source, ref Int32 location, [AllowNull, MaybeNull] out Exception exception, [AllowNull] IAdd<Capture> trace) {
 			exception = null;

Stringier.Patterns/ChainEnumAlternator.cs

@@ -29,7 +29,7 @@ internal sealed class ChainEnumAlternator<TEnum> : Combinator where TEnum : stru
 		protected internal override void Consume(ReadOnlyMemory<Char> source, ref Int32 location, [AllowNull, MaybeNull] out Exception exception, [AllowNull] IAdd<Capture> trace) {
 			exception = null;
 			foreach (String name in FastEnum.GetNames<TEnum>()) {
-				new StringLiteral(name).Consume(source, ref location, out exception, trace);
+				new MemoryLiteral(name).Consume(source, ref location, out exception, trace);
 				if (exception is null) return;
 			}
 		}
@@ -38,7 +38,7 @@ protected internal override void Consume(ReadOnlyMemory<Char> source, ref Int32
 		protected internal override unsafe void Consume([DisallowNull] Char* source, Int32 length, ref Int32 location, [AllowNull, MaybeNull] out Exception exception, [AllowNull] IAdd<Capture> trace) {
 			exception = null;
 			foreach (String name in FastEnum.GetNames<TEnum>()) {
-				new StringLiteral(name).Consume(source, length, ref location, out exception, trace);
+				new MemoryLiteral(name).Consume(source, length, ref location, out exception, trace);
 				if (exception is null) return;
 			}
 		}
@@ -65,7 +65,7 @@ protected internal override void Neglect(ReadOnlyMemory<Char> source, ref Int32
 			Int32 start = location;
 			Int32 shortest = Int32.MaxValue;
 			foreach (String name in FastEnum.GetNames<TEnum>().Reverse()) {
-				new StringLiteral(name).Neglect(source, ref location, out exception, trace);
+				new MemoryLiteral(name).Neglect(source, ref location, out exception, trace);
 				if (location - start < shortest) {
 					shortest = location - start;
 				}
@@ -84,7 +84,7 @@ protected internal override unsafe void Neglect([DisallowNull] Char* source, Int
 			Int32 start = location;
 			Int32 shortest = Int32.MaxValue;
 			foreach (String name in FastEnum.GetNames<TEnum>().Reverse()) {
-				new StringLiteral(name).Neglect(source, length, ref location, out exception, trace);
+				new MemoryLiteral(name).Neglect(source, length, ref location, out exception, trace);
 				if (location - start < shortest) {
 					shortest = location - start;
 				}

Stringier.Patterns/CharLiteral.cs

@@ -31,7 +31,7 @@ internal CharLiteral(Char @char) : this(@char, default) { }
 
 		/// <inheritdoc/>
 		[return: NotNull]
-		public override Pattern Repeat(Int32 count) => new StringLiteral(new String(Char, count), Casing);
+		public override Pattern Repeat(Int32 count) => new MemoryLiteral(new String(Char, count), Casing);
 
 		/// <inheritdoc/>
 		[return: NotNull]