consolidated implementation, prepared release 1.2.0 (#5)

* consolidated implementation between .NET standard and core by using the IndexRange class

* prepared release 1.2.0

.editorconfig

@@ -0,0 +1,207 @@
+# Remove the line below if you want to inherit .editorconfig settings from higher directories
+root = true
+
+# C# files
+[*.cs]
+
+#### Core EditorConfig Options ####
+
+# Indentation and spacing
+indent_size = 4
+indent_style = space
+tab_width = 4
+
+# New line preferences
+end_of_line = crlf
+insert_final_newline = true
+
+#### .NET Coding Conventions ####
+
+# Organize usings
+dotnet_separate_import_directive_groups = false
+dotnet_sort_system_directives_first = false
+file_header_template = Copyright (c) Sebastian Fischer. All Rights Reserved.\nLicensed under the MIT License.
+
+# this. and Me. preferences
+dotnet_style_qualification_for_event = true:suggestion
+dotnet_style_qualification_for_field = true
+dotnet_style_qualification_for_method = true:suggestion
+dotnet_style_qualification_for_property = true:suggestion
+
+# Language keywords vs BCL types preferences
+dotnet_style_predefined_type_for_locals_parameters_members = true
+dotnet_style_predefined_type_for_member_access = true
+
+# Parentheses preferences
+dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity
+dotnet_style_parentheses_in_other_binary_operators = always_for_clarity
+dotnet_style_parentheses_in_other_operators = never_if_unnecessary
+dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity
+
+# Modifier preferences
+dotnet_style_require_accessibility_modifiers = for_non_interface_members
+
+# Expression-level preferences
+dotnet_style_coalesce_expression = true
+dotnet_style_collection_initializer = true:silent
+dotnet_style_explicit_tuple_names = true
+dotnet_style_null_propagation = true
+dotnet_style_object_initializer = true:silent
+dotnet_style_operator_placement_when_wrapping = beginning_of_line
+dotnet_style_prefer_auto_properties = true:suggestion
+dotnet_style_prefer_compound_assignment = true
+dotnet_style_prefer_conditional_expression_over_assignment = true
+dotnet_style_prefer_conditional_expression_over_return = true
+dotnet_style_prefer_inferred_anonymous_type_member_names = true
+dotnet_style_prefer_inferred_tuple_names = true
+dotnet_style_prefer_is_null_check_over_reference_equality_method = true
+dotnet_style_prefer_simplified_boolean_expressions = true
+dotnet_style_prefer_simplified_interpolation = true
+
+# Field preferences
+dotnet_style_readonly_field = true
+
+# Parameter preferences
+dotnet_code_quality_unused_parameters = all
+
+# Suppression preferences
+dotnet_remove_unnecessary_suppression_exclusions = none
+
+#### C# Coding Conventions ####
+
+# var preferences
+csharp_style_var_elsewhere = false:suggestion
+csharp_style_var_for_built_in_types = false:suggestion
+csharp_style_var_when_type_is_apparent = false:suggestion
+
+# Expression-bodied members
+csharp_style_expression_bodied_accessors = true
+csharp_style_expression_bodied_constructors = false
+csharp_style_expression_bodied_indexers = true
+csharp_style_expression_bodied_lambdas = true
+csharp_style_expression_bodied_local_functions = false
+csharp_style_expression_bodied_methods = false
+csharp_style_expression_bodied_operators = false
+csharp_style_expression_bodied_properties = true
+
+# Pattern matching preferences
+csharp_style_pattern_matching_over_as_with_null_check = true
+csharp_style_pattern_matching_over_is_with_cast_check = true
+csharp_style_prefer_not_pattern = true
+csharp_style_prefer_pattern_matching = true
+csharp_style_prefer_switch_expression = false:silent
+
+# Null-checking preferences
+csharp_style_conditional_delegate_call = true
+
+# Modifier preferences
+csharp_prefer_static_local_function = true
+csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async
+
+# Code-block preferences
+csharp_prefer_braces = true:suggestion
+csharp_prefer_simple_using_statement = false
+
+# Expression-level preferences
+csharp_prefer_simple_default_expression = true
+csharp_style_deconstructed_variable_declaration = true
+csharp_style_implicit_object_creation_when_type_is_apparent = true
+csharp_style_inlined_variable_declaration = true
+csharp_style_pattern_local_over_anonymous_function = true
+csharp_style_prefer_index_operator = true
+csharp_style_prefer_range_operator = true
+csharp_style_throw_expression = true
+csharp_style_unused_value_assignment_preference = discard_variable
+csharp_style_unused_value_expression_statement_preference = discard_variable
+
+# 'using' directive preferences
+csharp_using_directive_placement = outside_namespace
+
+#### C# Formatting Rules ####
+
+# New line preferences
+csharp_new_line_before_catch = true
+csharp_new_line_before_else = true
+csharp_new_line_before_finally = true
+csharp_new_line_before_members_in_anonymous_types = true
+csharp_new_line_before_members_in_object_initializers = true
+csharp_new_line_before_open_brace = all
+csharp_new_line_between_query_expression_clauses = true
+
+# Indentation preferences
+csharp_indent_block_contents = true
+csharp_indent_braces = false
+csharp_indent_case_contents = true
+csharp_indent_case_contents_when_block = true
+csharp_indent_labels = one_less_than_current
+csharp_indent_switch_labels = true
+
+# Space preferences
+csharp_space_after_cast = false
+csharp_space_after_colon_in_inheritance_clause = true
+csharp_space_after_comma = true
+csharp_space_after_dot = false
+csharp_space_after_keywords_in_control_flow_statements = true
+csharp_space_after_semicolon_in_for_statement = true
+csharp_space_around_binary_operators = before_and_after
+csharp_space_around_declaration_statements = false
+csharp_space_before_colon_in_inheritance_clause = true
+csharp_space_before_comma = false
+csharp_space_before_dot = false
+csharp_space_before_open_square_brackets = false
+csharp_space_before_semicolon_in_for_statement = false
+csharp_space_between_empty_square_brackets = false
+csharp_space_between_method_call_empty_parameter_list_parentheses = false
+csharp_space_between_method_call_name_and_opening_parenthesis = false
+csharp_space_between_method_call_parameter_list_parentheses = false
+csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
+csharp_space_between_method_declaration_name_and_open_parenthesis = false
+csharp_space_between_method_declaration_parameter_list_parentheses = false
+csharp_space_between_parentheses = false
+csharp_space_between_square_brackets = false
+
+# Wrapping preferences
+csharp_preserve_single_line_blocks = true
+csharp_preserve_single_line_statements = true
+
+#### Naming styles ####
+
+# Naming rules
+
+dotnet_naming_rule.interface_should_be_begins_with_i.severity = suggestion
+dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface
+dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i
+
+dotnet_naming_rule.types_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.types_should_be_pascal_case.symbols = types
+dotnet_naming_rule.types_should_be_pascal_case.style = pascal_case
+
+dotnet_naming_rule.non_field_members_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.non_field_members_should_be_pascal_case.symbols = non_field_members
+dotnet_naming_rule.non_field_members_should_be_pascal_case.style = pascal_case
+
+# Symbol specifications
+
+dotnet_naming_symbols.interface.applicable_kinds = interface
+dotnet_naming_symbols.interface.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.interface.required_modifiers = 
+
+dotnet_naming_symbols.types.applicable_kinds = class, struct, interface, enum
+dotnet_naming_symbols.types.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.types.required_modifiers = 
+
+dotnet_naming_symbols.non_field_members.applicable_kinds = property, event, method
+dotnet_naming_symbols.non_field_members.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.non_field_members.required_modifiers = 
+
+# Naming styles
+
+dotnet_naming_style.pascal_case.required_prefix = 
+dotnet_naming_style.pascal_case.required_suffix = 
+dotnet_naming_style.pascal_case.word_separator = 
+dotnet_naming_style.pascal_case.capitalization = pascal_case
+
+dotnet_naming_style.begins_with_i.required_prefix = I
+dotnet_naming_style.begins_with_i.required_suffix = 
+dotnet_naming_style.begins_with_i.word_separator = 
+dotnet_naming_style.begins_with_i.capitalization = pascal_case

src/ArrayView{T}.cs

@@ -1,3 +1,6 @@
+// Copyright (c) Sebastian Fischer. All Rights Reserved.
+// Licensed under the MIT License.
+
 using System.Collections;
 using System.Collections.Generic;
 

src/Diffs.csproj

@@ -11,8 +11,8 @@
     <Copyright>Copyright (c) 2021 Sebastian Fischer</Copyright>
     <RepositoryUrl>https://github.com/spkl/Diffs</RepositoryUrl>
     <AssemblyVersion>1.0.0.0</AssemblyVersion>
-    <FileVersion>1.1.0.0</FileVersion>
-    <Version>1.1.0</Version>
+    <FileVersion>1.2.0.0</FileVersion>
+    <Version>1.2.0</Version>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\keys\spkl.Diffs.snk</AssemblyOriginatorKeyFile>
     <DelaySign>false</DelaySign>
@@ -22,7 +22,8 @@
 This project uses Semantic Versioning (https://semver.org/).</Description>
     <PackageTags>diff diffs difference algorithm ses shortest edit script myers</PackageTags>
     <GeneratePackageOnBuild>false</GeneratePackageOnBuild>
-    <PackageReleaseNotes>- Introduced new GetResult overload to customize the preferred order of unmatched lines.</PackageReleaseNotes>
+    <PackageReleaseNotes>- Improved performance for .NET standard / Full Framework.
+- Introduced IndexRange class.</PackageReleaseNotes>
   </PropertyGroup>
 
   <ItemGroup>

src/Diffs.sln

@@ -5,7 +5,12 @@ VisualStudioVersion = 16.0.30907.101
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Diffs", "Diffs.csproj", "{DBB54978-242F-4A05-BAB9-52289BD418D5}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Diffs.Test", "..\test\Diffs.Test.csproj", "{3CE2D8D3-C4FD-4AFF-BC85-877BE39AB7DC}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Diffs.Test", "..\test\Diffs.Test.csproj", "{3CE2D8D3-C4FD-4AFF-BC85-877BE39AB7DC}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{D1F42FC1-FF7E-4CEA-8048-E765B3423D7D}"
+	ProjectSection(SolutionItems) = preProject
+		..\.editorconfig = ..\.editorconfig
+	EndProjectSection
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

src/IndexRange.cs

@@ -0,0 +1,96 @@
+// Copyright (c) Sebastian Fischer. All Rights Reserved.
+// Licensed under the MIT License.
+
+using System.Collections.Generic;
+using System.Linq;
+
+namespace spkl.Diffs
+{
+    /// <summary>
+    /// Encapsulates a range of indexes that can be enumerated.
+    /// </summary>
+    public readonly ref struct IndexRange
+    {
+        private readonly int start;
+
+        private readonly int length;
+
+        /// <summary>
+        /// The start of the range, i.e. the first index.
+        /// </summary>
+        public int Start => this.start;
+
+        /// <summary>
+        /// The length of the range, i.e. the number of indexes in the range.
+        /// </summary>
+        public int Length => this.length;
+
+        /// <summary>
+        /// Creates a new instance with the specified <paramref name="start"/> and <paramref name="length"/>.
+        /// </summary>
+        public IndexRange(int start, int length)
+        {
+            this.start = start;
+            this.length = length;
+        }
+
+        /// <summary>
+        /// Gets the index at the specified offset.
+        /// Offset '0' equals <see cref="Start"/>.
+        /// </summary>
+        /// <returns>The offset of the index to get.</returns>
+        public int this[int offset]
+        {
+            get => offset + this.start;
+        }
+
+        /// <summary>
+        /// Creates a new <see cref="IndexRange"/> by trimming <paramref name="count"/> number of indexes from the start of this instance.
+        /// </summary>
+        /// <param name="count">Number of indexes to trim from the start.</param>
+        /// <returns>A new instance with a smaller range.</returns>
+        public IndexRange TrimStart(int count)
+        {
+            return new IndexRange(this.start + count, this.length - count);
+        }
+
+        /// <summary>
+        /// Creates a new <see cref="IndexRange"/> by trimming <paramref name="count"/> number of indexes from the end of this instance.
+        /// </summary>
+        /// <param name="count">Number of indexes to trim from the end.</param>
+        /// <returns>A new instance with a smaller range.</returns>
+        public IndexRange TrimEnd(int count)
+        {
+            return new IndexRange(this.start, this.length - count);
+        }
+
+        /// <summary>
+        /// Creates a new <see cref="IndexRange"/> by specifying the indexes of the indexes to start and end with.
+        /// </summary>
+        /// <param name="startIndex">The index of the index in this range to start the new range with.</param>
+        /// <param name="endIndexExclusive">The index of the index in this range that is the first one not contained in the new range.</param>
+        /// <returns>A new instance with a smaller range.</returns>
+        public IndexRange Range(int startIndex, int endIndexExclusive)
+        {
+            return new IndexRange(this.start + startIndex, endIndexExclusive - startIndex);
+        }
+
+        /// <summary>
+        /// Creates a new <see cref="IndexRange"/> that starts with the index that is at index <paramref name="startIndex"/> of this instance.
+        /// The last index of the new instance is the same as in this instance.
+        /// This is equal to calling <see cref="TrimStart(int)"/>.
+        /// </summary>
+        /// <param name="startIndex">The index of the index in this range to start the new range with.</param>
+        /// <returns>A new instance with a smaller range.</returns>
+        public IndexRange Range(int startIndex)
+        {
+            return this.TrimStart(startIndex);
+        }
+
+        /// <inheritdoc cref="IEnumerable{T}.GetEnumerator"/>
+        public IEnumerator<int> GetEnumerator()
+        {
+            return Enumerable.Range(this.start, this.length).GetEnumerator();
+        }
+    }
+}