.editorconfig

# EditorConfig file
root = true

# General settings for all files
[*]
indent_style = space
spelling_exclusion_path = SpellingExclusions.dic

# Code files
[*.{cs,csx,vb,vbx}]
indent_size = 4
insert_final_newline = true
charset = utf-8

# XML project files
[*.{csproj,vbproj,vcxproj,vcxproj.filters,proj,projitems,shproj}]
indent_size = 2

# XML config files
[*.{props,targets,ruleset,config,nuspec,resx,vsixmanifest,vsct}]
indent_size = 2

# JSON files
[*.json]
indent_size = 2

# PowerShell files
[*.ps1]
indent_size = 2

# Shell scripts
[*.sh]
end_of_line = lf
indent_size = 2

##########################################
# C# and VB.NET style settings
[*.{cs,vb}]
##########################################

dotnet_sort_system_directives_first = true
dotnet_separate_import_directive_groups = false
dotnet_style_require_accessibility_modifiers = for_non_interface_members:warning

# Qualification
dotnet_style_qualification_for_field = false:refactoring
dotnet_style_qualification_for_property = false:refactoring
dotnet_style_qualification_for_method = false:refactoring
dotnet_style_qualification_for_event = false:refactoring

# Predefined type preference
dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion
dotnet_style_predefined_type_for_member_access = true:suggestion

# Modern language features
dotnet_style_object_initializer = true:suggestion
dotnet_style_collection_initializer = true:suggestion
dotnet_style_coalesce_expression = true:suggestion
dotnet_style_null_propagation = true:suggestion
dotnet_style_explicit_tuple_names = true:suggestion

# Whitespace
dotnet_style_allow_multiple_blank_lines_experimental = false

# API analyzer
dotnet_public_api_analyzer.require_api_files = true

# IDE0055 formatting fix
dotnet_diagnostic.IDE0055.severity = warning

##########################################
# Naming Rules
##########################################

# Naming errors as warning
dotnet_diagnostic.IDE1006.severity = warning

# === Naming Styles ===
dotnet_naming_style.pascal_case_style.capitalization = pascal_case

dotnet_naming_style.camel_case_style.capitalization = camel_case

dotnet_naming_style.underscore_camel_case_style.capitalization = camel_case
dotnet_naming_style.underscore_camel_case_style.required_prefix = _

dotnet_naming_style.interface_style.capitalization = pascal_case
dotnet_naming_style.interface_style.required_prefix = I

dotnet_naming_style.async_method_style.capitalization = pascal_case
dotnet_naming_style.async_method_style.required_suffix = Async

dotnet_naming_style.underscore_pascalcase.capitalization = pascal_case
dotnet_naming_style.underscore_pascalcase.required_prefix = _

# === Symbols ===
dotnet_naming_symbols.public_api_symbols.applicable_kinds = class, struct, enum, property, method, event, field, delegate, namespace
dotnet_naming_symbols.public_api_symbols.applicable_accessibilities = public, protected, protected_internal

dotnet_naming_symbols.protected_fields.applicable_kinds = field
dotnet_naming_symbols.protected_fields.applicable_accessibilities = protected

dotnet_naming_symbols.private_fields.applicable_kinds = field
dotnet_naming_symbols.private_fields.applicable_accessibilities = private

dotnet_naming_symbols.locals_and_parameters.applicable_kinds = local, parameter
dotnet_naming_symbols.locals_and_parameters.applicable_accessibilities = *

dotnet_naming_symbols.constants.applicable_kinds = field
dotnet_naming_symbols.constants.required_modifiers = const

dotnet_naming_symbols.interfaces.applicable_kinds = interface
dotnet_naming_symbols.interfaces.applicable_accessibilities = *

dotnet_naming_symbols.async_methods.applicable_kinds = method
dotnet_naming_symbols.async_methods.required_modifiers = async

# === Rules ===
dotnet_naming_rule.public_api_should_be_pascal_case.symbols = public_api_symbols
dotnet_naming_rule.public_api_should_be_pascal_case.style = pascal_case_style
dotnet_naming_rule.public_api_should_be_pascal_case.severity = warning

dotnet_naming_rule.protected_fields_should_be_prefixed_with_underscore_and_pascalcase.symbols = protected_fields
dotnet_naming_rule.protected_fields_should_be_prefixed_with_underscore_and_pascalcase.style = underscore_pascalcase
dotnet_naming_rule.protected_fields_should_be_prefixed_with_underscore_and_pascalcase.severity = warning

dotnet_naming_rule.private_fields_should_be_underscore_camel.symbols = private_fields
dotnet_naming_rule.private_fields_should_be_underscore_camel.style = underscore_camel_case_style
dotnet_naming_rule.private_fields_should_be_underscore_camel.severity = warning

dotnet_naming_rule.locals_and_parameters_should_be_camel_case.symbols = locals_and_parameters
dotnet_naming_rule.locals_and_parameters_should_be_camel_case.style = camel_case_style
dotnet_naming_rule.locals_and_parameters_should_be_camel_case.severity = warning

dotnet_naming_rule.constants_should_be_pascal_case.symbols = constants
dotnet_naming_rule.constants_should_be_pascal_case.style = pascal_case_style
dotnet_naming_rule.constants_should_be_pascal_case.severity = warning

dotnet_naming_rule.interfaces_should_be_prefixed_with_i.symbols = interfaces
dotnet_naming_rule.interfaces_should_be_prefixed_with_i.style = interface_style
dotnet_naming_rule.interfaces_should_be_prefixed_with_i.severity = warning

dotnet_naming_rule.async_methods_should_end_with_async.symbols = async_methods
dotnet_naming_rule.async_methods_should_end_with_async.style = async_method_style
dotnet_naming_rule.async_methods_should_end_with_async.severity = warning

# Other style settings
dotnet_style_operator_placement_when_wrapping = beginning_of_line
dotnet_style_prefer_is_null_check_over_reference_equality_method = true:warning
dotnet_style_prefer_auto_properties = true:silent
dotnet_style_prefer_simplified_boolean_expressions = true:suggestion
dotnet_style_prefer_conditional_expression_over_assignment = true:silent
dotnet_style_prefer_conditional_expression_over_return = true:silent
dotnet_style_prefer_inferred_tuple_names = true:suggestion
dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion
dotnet_style_prefer_compound_assignment = true:suggestion
dotnet_style_prefer_simplified_interpolation = true:suggestion
dotnet_style_prefer_collection_expression = when_types_loosely_match:suggestion

##########################################
# C# Specific settings
[*.cs]
##########################################

# Namespaces
csharp_style_namespace_declarations = file_scoped:warning # Less indentation

# Newlines
csharp_new_line_before_open_brace = all
csharp_new_line_before_else = true
csharp_new_line_before_catch = true
csharp_new_line_before_finally = true
csharp_new_line_before_members_in_object_initializers = true
csharp_new_line_before_members_in_anonymous_types = true
csharp_new_line_between_query_expression_clauses = true

# Indentation
csharp_indent_block_contents = true
csharp_indent_braces = false
csharp_indent_case_contents = true
csharp_indent_case_contents_when_block = false
csharp_indent_switch_labels = true
csharp_indent_labels = flush_left

# Spacing
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 = do_not_ignore
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

# Expression bodies
csharp_style_expression_bodied_methods = false:none
csharp_style_expression_bodied_constructors = false:none
csharp_style_expression_bodied_operators = false:none
csharp_style_expression_bodied_properties = true:none
csharp_style_expression_bodied_indexers = true:none
csharp_style_expression_bodied_accessors = true:none

# Modern language features
csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
csharp_style_inlined_variable_declaration = true:suggestion
csharp_style_throw_expression = true:suggestion
csharp_style_conditional_delegate_call = true:suggestion
csharp_style_prefer_extended_property_pattern = true:suggestion
csharp_style_prefer_init_only_properties = true:suggestion

# Braces
csharp_prefer_braces = always:warning
csharp_preserve_single_line_blocks = true
csharp_preserve_single_line_statements = true
dotnet_diagnostic.IDE0011.severity = warning

# 'var' everywhere
csharp_style_var_for_built_in_types = true:warning
csharp_style_var_when_type_is_apparent = true:warning
csharp_style_var_elsewhere = true:warning
dotnet_diagnostic.IDE0007.severity = warning

# XML documentation
dotnet_diagnostic.SA1600.severity = suggestion # Elements must be documented
dotnet_diagnostic.SA1623.severity = suggestion # Property summary must match accessor

# Code quality
dotnet_diagnostic.IDE0005.severity = error       # Unused usings
dotnet_diagnostic.IDE0040.severity = warning     # Accessibility modifiers
dotnet_diagnostic.IDE0052.severity = warning     # Remove unread private members
dotnet_diagnostic.IDE0059.severity = warning     # Unused assignment
dotnet_diagnostic.IDE0055.severity = warning       # Formatting issues (spacing, newlines, etc.)
dotnet_diagnostic.IDE0060.severity = warning     # Unused parameters
dotnet_diagnostic.CA1012.severity = warning      # Abstract types with public ctors
dotnet_diagnostic.CA1822.severity = none         # Make member static
dotnet_diagnostic.IDE0032.severity = warning     # Use auto-property
dotnet_diagnostic.CA2000.severity = warning      # Dispose objects before losing scope
dotnet_diagnostic.CA1802.severity = warning      # Use literals where appropriate
dotnet_diagnostic.CA1826.severity = warning      # Use predicate in Any() instead of Where().Any()
dotnet_diagnostic.CA1828.severity = warning      # Use Count property directly instead of LINQ Count()
dotnet_diagnostic.CA1829.severity = warning      # Use Length/Count instead of LINQ Count() for performance
dotnet_diagnostic.CA1858.severity = warning      # Avoid redundant type checks like (object)x is string
dotnet_diagnostic.CA1860.severity = warning      # Use TryGetValue instead of ContainsKey followed by index
dotnet_diagnostic.CA1868.severity = warning      # Use indexing instead of ElementAt() when possible
dotnet_diagnostic.CA1869.severity = warning      # Avoid LINQ FirstOrDefault on arrays when index access is better
dotnet_diagnostic.CA1871.severity = warning      # Prefer optimized collection initialization patterns
dotnet_diagnostic.CA1502.severity = warning      # Avoid excessive complexity

##########################################
# Experimental Visual Spacing Rules
##########################################

dotnet_diagnostic.IDE2001.severity = warning
dotnet_diagnostic.IDE2002.severity = warning
dotnet_diagnostic.IDE2004.severity = warning
dotnet_diagnostic.IDE2005.severity = warning
dotnet_diagnostic.IDE2006.severity = warning
csharp_style_expression_bodied_lambdas = true:silent
csharp_style_expression_bodied_local_functions = false:silent

##########################################
# Exceptions by path
##########################################

[src/{Compilers,ExpressionEvaluator,Scripting}/**Test**/*.{cs,vb}]
dotnet_diagnostic.IDE0060.severity = none

[src/{Analyzers,CodeStyle,Features,Workspaces,EditorFeatures,VisualStudio}/**/*.{cs,vb}]
# Reserved for future path-specific rules

[src/{VisualStudio}/**/*.{cs,vb}]
dotnet_code_quality.CA1822.api_surface = private