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StructBuilder.cs
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232 lines (209 loc) · 7.5 KB
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using System.Collections.Generic;
using System.Linq;
using Optional;
using Optional.Collections;
namespace SharpCode
{
/// <summary>
/// Provides functionality for building structs. <see cref="StructBuilder"/> instances are <b>not</b>
/// immutable.
/// </summary>
public class StructBuilder
{
private readonly Struct _struct = new Struct();
private readonly List<ConstructorBuilder> _constructors = new List<ConstructorBuilder>();
private readonly List<FieldBuilder> _fields = new List<FieldBuilder>();
private readonly List<PropertyBuilder> _properties = new List<PropertyBuilder>();
internal StructBuilder()
{
}
internal StructBuilder(string name, AccessModifier accessModifier)
{
_struct.Name = name;
_struct.AccessModifier = accessModifier;
}
/// <summary>
/// Sets the access modifier of the struct.
/// </summary>
/// <param name="accessModifier">
/// The access modifier of the struct.
/// </param>
public StructBuilder WithAccessModifier(AccessModifier accessModifier)
{
_struct.AccessModifier = accessModifier;
return this;
}
/// <summary>
/// Sets the name of the struct.
/// </summary>
/// <param name="name">
/// The name of the struct.
/// </param>
public StructBuilder WithName(string name)
{
_struct.Name = name;
return this;
}
/// <summary>
/// Adds XML summary documentation to the struct.
/// </summary>
/// <param name="summary">
/// The content of the summary documentation.
/// </param>
public StructBuilder WithSummary(string summary)
{
_struct.Summary = Option.Some<string?>(summary);
return this;
}
/// <summary>
/// Adds a constructor to the struct.
/// </summary>
/// <param name="builder">
/// The configuration of the constructor.
/// </param>
public StructBuilder WithConstructor(ConstructorBuilder builder)
{
_constructors.Add(builder);
return this;
}
/// <summary>
/// Adds a field to the struct.
/// </summary>
/// <param name="builder">
/// The configuration of the field.
/// </param>
public StructBuilder WithField(FieldBuilder builder)
{
_fields.Add(builder);
return this;
}
/// <summary>
/// Adds a bunch of fields to the struct.
/// </summary>
/// <param name="builders">
/// A collection of fields.
/// </param>
public StructBuilder WithFields(IEnumerable<FieldBuilder> builders)
{
_fields.AddRange(builders);
return this;
}
/// <summary>
/// Adds a bunch of fields to the struct.
/// </summary>
/// <param name="builders">
/// A collection of fields.
/// </param>
public StructBuilder WithFields(params FieldBuilder[] builders)
{
_fields.AddRange(builders);
return this;
}
/// <summary>
/// Adds a property to the struct.
/// </summary>
/// <param name="builder">
/// The configuration of the property.
/// </param>
public StructBuilder WithProperty(PropertyBuilder builder)
{
_properties.Add(builder);
return this;
}
/// <summary>
/// Adds a bunch of properties to the struct.
/// </summary>
/// <param name="builders">
/// A collection of properties.
/// </param>
public StructBuilder WithProperties(IEnumerable<PropertyBuilder> builders)
{
_properties.AddRange(builders);
return this;
}
/// <summary>
/// Adds a bunch of properties to the struct.
/// </summary>
/// <param name="builders">
/// A collection of properties.
/// </param>
public StructBuilder WithProperties(params PropertyBuilder[] builders)
{
_properties.AddRange(builders);
return this;
}
/// <summary>
/// Adds an interface to the list of interfaces that the struct implements.
/// </summary>
/// <param name="name">
/// The name of the interface that the struct implements.
/// </param>
public StructBuilder WithImplementedInterface(string name)
{
_struct.ImplementedInterfaces.Add(name);
return this;
}
/// <summary>
/// Adds a bunch of interfaces to the list of interfaces that the struct implements.
/// </summary>
/// <param name="names">
/// A collection with the names of interfaces that the struct implements.
/// </param>
public StructBuilder WithImplementedInterfaces(IEnumerable<string> names)
{
_struct.ImplementedInterfaces.AddRange(names);
return this;
}
/// <summary>
/// Adds a bunch of interfaces to the list of interfaces that the struct implements.
/// </summary>
/// <param name="names">
/// A collection with the names of interfaces that the struct implements.
/// </param>
public StructBuilder WithImplementedInterfaces(params string[] names)
{
_struct.ImplementedInterfaces.AddRange(names);
return this;
}
/// <summary>
/// Returns the source code of the built struct.
/// </summary>
/// <param name="formatted">
/// Indicates whether to format the source code.
/// </param>
public string ToSourceCode(bool formatted = true) =>
Build().ToSourceCode(formatted);
/// <summary>
/// Returns the source code of the built struct.
/// </summary>
public override string ToString() =>
ToSourceCode();
internal Struct Build()
{
if (string.IsNullOrWhiteSpace(_struct.Name))
{
throw new MissingBuilderSettingException(
"Providing the name of the struct is required when building a struct.");
}
_struct.ImplementedInterfaces
.FirstOrNone(x => string.IsNullOrWhiteSpace(x))
.MatchSome(_ => throw new MissingBuilderSettingException(
"Providing the name of the interface is required when adding an implemented interface to a struct."));
_struct.Fields.AddRange(_fields.Select(field => field.Build()));
_struct.Properties.AddRange(_properties.Select(prop => prop.Build()));
_struct.Properties
.FirstOrNone(x => x.DefaultValue.HasValue)
.MatchSome(prop => throw new SyntaxException(
"Default property values are not allowed in structs. (CS0573)"));
_struct.Constructors.AddRange(
_constructors.Select(ctor => ctor
.WithName(_struct.Name!)
.Build()));
_struct.Constructors
.FirstOrNone(x => !x.Parameters.Any())
.MatchSome(ctor => throw new SyntaxException(
"Explicit parameterless contructors are not allowed in structs. (CS0568)"));
return _struct;
}
}
}