Module: MilkTea::CBackend::FeatureDetection

Included in:
MilkTea::CBackend
Defined in:
lib/milk_tea/core/c_backend/feature_detection.rb

Constant Summary collapse

FORMAT_HELPER_DEPENDENCIES = 
{
  'mt_format_append_str' => %w[mt_format_append_bytes mt_format_check_capacity],
  'mt_format_append_cstr' => %w[mt_format_append_bytes mt_format_check_capacity mt_format_cstr_len],
  'mt_format_append_bool' => %w[mt_format_append_bytes mt_format_check_capacity],
  'mt_format_append_ptr_uint' => %w[mt_format_check_capacity mt_format_ptr_uint_len],
  'mt_format_append_ulong' => %w[mt_format_check_capacity mt_format_ulong_len],
  'mt_format_append_uint' => %w[mt_format_append_ptr_uint mt_format_check_capacity mt_format_ptr_uint_len],
  'mt_format_append_long' => %w[mt_format_append_bytes mt_format_check_capacity mt_format_append_ulong mt_format_ulong_len],
  'mt_format_append_int' => %w[mt_format_append_bytes mt_format_check_capacity mt_format_append_ptr_uint mt_format_ptr_uint_len],
  'mt_format_append_ulong_hex' => %w[mt_format_check_capacity mt_format_ulong_hex_len],
  'mt_format_append_ulong_hex_upper' => %w[mt_format_check_capacity mt_format_ulong_hex_len],
  'mt_format_append_long_hex' => %w[mt_format_append_bytes mt_format_check_capacity mt_format_append_ulong_hex mt_format_ulong_hex_len],
  'mt_format_append_long_hex_upper' => %w[mt_format_append_bytes mt_format_check_capacity mt_format_append_ulong_hex_upper mt_format_ulong_hex_len],
  'mt_format_append_ulong_oct' => %w[mt_format_check_capacity mt_format_ulong_oct_len],
  'mt_format_append_long_oct' => %w[mt_format_append_bytes mt_format_check_capacity mt_format_append_ulong_oct mt_format_ulong_oct_len],
  'mt_format_append_ulong_bin' => %w[mt_format_check_capacity mt_format_ulong_bin_len],
  'mt_format_append_long_bin' => %w[mt_format_append_bytes mt_format_check_capacity mt_format_append_ulong_bin mt_format_ulong_bin_len],
  'mt_format_append_float' => %w[mt_format_check_capacity mt_format_float_len],
  'mt_format_append_double' => %w[mt_format_check_capacity mt_format_double_len],
  'mt_format_append_double_precision' => %w[mt_format_check_capacity mt_format_double_precision_len],
  'mt_format_int_len' => %w[mt_format_ptr_uint_len],
  'mt_format_long_len' => %w[mt_format_ulong_len],
  'mt_format_long_hex_len' => %w[mt_format_ulong_hex_len],
  'mt_format_long_oct_len' => %w[mt_format_ulong_oct_len],
  'mt_format_long_bin_len' => %w[mt_format_ulong_bin_len],
}.freeze

Instance Method Summary collapse

Instance Method Details

#aggregate_contains_string_view?(type, visiting = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 415

def aggregate_contains_string_view?(type, visiting = nil)
  return false unless type
  return false if visiting&.key?(type)

  visiting = (visiting || {}).merge(type => true)
  case type
  when Types::StringView
    true
  when Types::Struct
    type.fields.any? { |_name, field_type| aggregate_contains_string_view?(field_type, visiting) }
  when Types::Variant
    type.arm_names.any? { |arm_name| (type.arm(arm_name) || {}).any? { |_field_name, field_type| aggregate_contains_string_view?(field_type, visiting) } }
  when Types::Nullable
    aggregate_contains_string_view?(type.base, visiting)
  when Types::GenericInstance
    type.arguments.any? { |argument| aggregate_contains_string_view?(argument, visiting) }
  else
    false
  end
end

#aggregate_equality_needs_string_view? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 411

def aggregate_equality_needs_string_view?
  aggregate_equality_types.any? { |type| aggregate_contains_string_view?(type) }
end

#aggregate_equality_type?(type) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 339

def aggregate_equality_type?(type)
  struct_equality_type?(type) || type.is_a?(Types::Variant) || type.is_a?(Types::VariantArmPayload)
end

#aggregate_equality_types ⇒ Object

Aggregate types (structs and variants) compared with ==/!= anywhere in the program, transitively closed over value-typed fields so nested aggregates used inside a comparison also get an equality helper.



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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 316

def aggregate_equality_types
  @aggregate_equality_types ||= begin
    types = Set.new
    emitted_functions.each do |function|
      function.body.each do |statement|
        statement_matches_expression_predicate?(
          statement,
          expression_pred: ->(expression) { collect_aggregate_equality_from_expression(expression, types) },
        )
      end
    end
    types
  end
end

#collect_aggregate_equality_dependencies(type, types) ⇒ Object 



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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 377

def collect_aggregate_equality_dependencies(type, types)
  return if types.include?(type)

  case type
  when Types::Variant
    types << type
    type.arm_names.each do |arm_name|
      (type.arm(arm_name) || {}).each_value { |field_type| collect_value_field_equality_dependencies(field_type, types) }
    end
  when Types::VariantArmPayload
    types << type
    arm_fields = type.variant_type.arm(type.arm_name) || {}
    arm_fields.each_value { |field_type| collect_value_field_equality_dependencies(field_type, types) }
  when Types::Struct
    return unless struct_equality_type?(type)

    types << type
    type.fields.each_value { |field_type| collect_value_field_equality_dependencies(field_type, types) }
  end
end

#collect_aggregate_equality_from_expression(expression, types) ⇒ Object 



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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 343

def collect_aggregate_equality_from_expression(expression, types)
  case expression
  when IR::Binary
    collect_aggregate_equality_from_expression(expression.left, types)
    collect_aggregate_equality_from_expression(expression.right, types)
    if EQUALITY_OPERATORS.include?(expression.operator) && aggregate_equality_type?(expression.left.type)
      collect_aggregate_equality_dependencies(expression.left.type, types)
    end
  when IR::Call
    collect_aggregate_equality_from_expression(expression.callee, types) unless expression.callee.is_a?(String)
    expression.arguments.each { |argument| collect_aggregate_equality_from_expression(argument, types) }
  when IR::Member
    collect_aggregate_equality_from_expression(expression.receiver, types)
  when IR::Index, IR::CheckedIndex, IR::CheckedSpanIndex, IR::NullableIndex, IR::NullableSpanIndex
    collect_aggregate_equality_from_expression(expression.receiver, types)
    collect_aggregate_equality_from_expression(expression.index, types)
  when IR::Unary
    collect_aggregate_equality_from_expression(expression.operand, types)
  when IR::Conditional
    collect_aggregate_equality_from_expression(expression.condition, types)
    collect_aggregate_equality_from_expression(expression.then_expression, types)
    collect_aggregate_equality_from_expression(expression.else_expression, types)
  when IR::ReinterpretExpr, IR::Cast, IR::AddressOf
    collect_aggregate_equality_from_expression(expression.expression, types)
  when IR::AggregateLiteral
    expression.fields.each { |field| collect_aggregate_equality_from_expression(field.value, types) }
  when IR::ArrayLiteral
    expression.elements.each { |element| collect_aggregate_equality_from_expression(element, types) }
  when IR::VariantLiteral
    expression.fields.each { |field| collect_aggregate_equality_from_expression(field.value, types) }
  end
  false
end

#collect_value_field_equality_dependencies(type, types) ⇒ Object 



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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 398

def collect_value_field_equality_dependencies(type, types)
  case type
  when Types::Nullable
    collect_value_field_equality_dependencies(type.base, types)
  when Types::Struct, Types::Variant
    collect_aggregate_equality_dependencies(type, types)
  when Types::VariantArmPayload
    collect_aggregate_equality_dependencies(type, types)
  when Types::GenericInstance
    collect_value_field_equality_dependencies(array_element_type(type), types) if array_type?(type)
  end
end

#expression_uses_named_call?(expression, callees) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 486

def expression_uses_named_call?(expression, callees)
  case expression
  when IR::Call
    callees.include?(expression.callee) ||
      (!expression.callee.is_a?(String) && expression_uses_named_call?(expression.callee, callees)) ||
      expression.arguments.any? { |argument| expression_uses_named_call?(argument, callees) }
  when IR::Member
    expression_uses_named_call?(expression.receiver, callees)
  when IR::Index, IR::CheckedIndex, IR::CheckedSpanIndex, IR::NullableIndex, IR::NullableSpanIndex
    expression_uses_named_call?(expression.receiver, callees) || expression_uses_named_call?(expression.index, callees)
  when IR::Unary
    expression_uses_named_call?(expression.operand, callees)
  when IR::Binary
    expression_uses_named_call?(expression.left, callees) || expression_uses_named_call?(expression.right, callees)
  when IR::Conditional
    expression_uses_named_call?(expression.condition, callees) || expression_uses_named_call?(expression.then_expression, callees) || expression_uses_named_call?(expression.else_expression, callees)
  when IR::ReinterpretExpr, IR::Cast, IR::AddressOf
    expression_uses_named_call?(expression.expression, callees)
  when IR::AggregateLiteral
    expression.fields.any? { |field| expression_uses_named_call?(field.value, callees) }
  when IR::ArrayLiteral
    expression.elements.any? { |element| expression_uses_named_call?(element, callees) }
  when IR::VariantLiteral
    expression.fields.any? { |field| expression_uses_named_call?(field.value, callees) }
  else
    false
  end
end

#expression_uses_str_equality?(expression) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 515

def expression_uses_str_equality?(expression)
  case expression
  when IR::Binary
    string_equality_expression?(expression) || expression_uses_str_equality?(expression.left) || expression_uses_str_equality?(expression.right)
  when IR::Call
    (!expression.callee.is_a?(String) && expression_uses_str_equality?(expression.callee)) || expression.arguments.any? { |argument| expression_uses_str_equality?(argument) }
  when IR::Member
    expression_uses_str_equality?(expression.receiver)
  when IR::Index, IR::CheckedIndex, IR::CheckedSpanIndex, IR::NullableIndex, IR::NullableSpanIndex
    expression_uses_str_equality?(expression.receiver) || expression_uses_str_equality?(expression.index)
  when IR::Unary
    expression_uses_str_equality?(expression.operand)
  when IR::Conditional
    expression_uses_str_equality?(expression.condition) || expression_uses_str_equality?(expression.then_expression) || expression_uses_str_equality?(expression.else_expression)
  when IR::ReinterpretExpr, IR::Cast, IR::AddressOf
    expression_uses_str_equality?(expression.expression)
  when IR::AggregateLiteral
    expression.fields.any? { |field| expression_uses_str_equality?(field.value) }
  when IR::ArrayLiteral
    expression.elements.any? { |element| expression_uses_str_equality?(element) }
  when IR::VariantLiteral
    expression.fields.any? { |field| expression_uses_str_equality?(field.value) }
  else
    false
  end
end

#expression_uses_vector_math?(expr) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 91

def expression_uses_vector_math?(expr)
  return false unless expr
  return true if expr.respond_to?(:type) && type_contains_vector_math?(expr.type)
  case expr
  when IR::Assignment
    expression_uses_vector_math?(expr.target) || expression_uses_vector_math?(expr.value)
  when IR::AggregateLiteral
    expr.fields.any? { |f| expression_uses_vector_math?(f.value) }
  when IR::Binary
    expression_uses_vector_math?(expr.left) || expression_uses_vector_math?(expr.right)
  when IR::Unary
    expression_uses_vector_math?(expr.operand)
  when IR::Call
    expr.arguments.any? { |a| expression_uses_vector_math?(a) }
  when IR::Member
    expression_uses_vector_math?(expr.receiver)
  when IR::Index
    expression_uses_vector_math?(expr.receiver)
  when IR::Conditional
    expression_uses_vector_math?(expr.then_expression) || expression_uses_vector_math?(expr.else_expression)
  else
    false
  end
end

#format_helper_callees ⇒ Object 



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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 187

def format_helper_callees
  %w[
    mt_format_str_make
    mt_format_str_release
    mt_format_cstr_len
    mt_format_bool_len
    mt_format_ptr_uint_len
    mt_format_ulong_len
    mt_format_uint_len
    mt_format_long_len
    mt_format_int_len
    mt_format_ulong_hex_len
    mt_format_long_hex_len
    mt_format_float_len
    mt_format_double_len
    mt_format_double_precision_len
    mt_format_ulong_oct_len
    mt_format_long_oct_len
    mt_format_ulong_bin_len
    mt_format_long_bin_len
    mt_format_append_str
    mt_format_append_cstr
    mt_format_append_bool
    mt_format_append_ptr_uint
    mt_format_append_ulong
    mt_format_append_uint
    mt_format_append_long
    mt_format_append_int
    mt_format_append_ulong_hex
    mt_format_append_ulong_hex_upper
    mt_format_append_long_hex
    mt_format_append_long_hex_upper
    mt_format_append_float
    mt_format_append_double
    mt_format_append_double_precision
    mt_format_append_ulong_oct
    mt_format_append_long_oct
    mt_format_append_ulong_bin
    mt_format_append_long_bin
  ]
end

#function_uses_named_call?(function, callees) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 436

def function_uses_named_call?(function, callees)
  function.body.any? { |statement| statement_uses_named_call?(statement, callees) }
end

#function_uses_str_equality?(function) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 440

def function_uses_str_equality?(function)
  function.body.any? { |statement| statement_uses_str_equality?(statement) }
end

#required_format_helper_callees ⇒ Object 



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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 229

def required_format_helper_callees
  @required_format_helper_callees ||= begin
    helpers = {}

    emitted_functions.each do |function|
      format_helper_callees.each do |callee|
        helpers[callee] = true if function_uses_named_call?(function, [callee])
      end
    end

    loop do
      changed = false

      helpers.keys.each do |helper|
        (FORMAT_HELPER_DEPENDENCIES[helper] || []).each do |dependency|
          next if helpers[dependency]

          helpers[dependency] = true
          changed = true
        end
      end

      break unless changed
    end

    helpers
  end
end

#statement_matches_expression_predicate?(statement, expression_pred:, **kwargs) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 444

def statement_matches_expression_predicate?(statement, expression_pred:, **kwargs)
  case statement
  when IR::LocalDecl
    statement.value && expression_pred.call(statement.value, **kwargs)
  when IR::Assignment
    expression_pred.call(statement.target, **kwargs) || expression_pred.call(statement.value, **kwargs)
  when IR::BlockStmt
    statement.body.any? { |inner| statement_matches_expression_predicate?(inner, expression_pred:, **kwargs) }
  when IR::WhileStmt
    expression_pred.call(statement.condition, **kwargs) ||
      statement.body.any? { |inner| statement_matches_expression_predicate?(inner, expression_pred:, **kwargs) }
  when IR::ForStmt
    statement_matches_expression_predicate?(statement.init, expression_pred:, **kwargs) ||
      expression_pred.call(statement.condition, **kwargs) ||
      statement.body.any? { |inner| statement_matches_expression_predicate?(inner, expression_pred:, **kwargs) } ||
      statement_matches_expression_predicate?(statement.post, expression_pred:, **kwargs)
  when IR::IfStmt
    expression_pred.call(statement.condition, **kwargs) ||
      statement.then_body.any? { |inner| statement_matches_expression_predicate?(inner, expression_pred:, **kwargs) } ||
      (statement.else_body && statement.else_body.any? { |inner| statement_matches_expression_predicate?(inner, expression_pred:, **kwargs) })
  when IR::SwitchStmt
    expression_pred.call(statement.expression, **kwargs) ||
      statement.cases.any? { |switch_case| switch_case.body.any? { |inner| statement_matches_expression_predicate?(inner, expression_pred:, **kwargs) } }
  when IR::StaticAssert
    expression_pred.call(statement.condition, **kwargs) || expression_pred.call(statement.message, **kwargs)
  when IR::ReturnStmt
    statement.value && expression_pred.call(statement.value, **kwargs)
  when IR::ExpressionStmt
    expression_pred.call(statement.expression, **kwargs)
  else
    false
  end
end

#statement_uses_named_call?(statement, callees) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 478

def statement_uses_named_call?(statement, callees)
  statement_matches_expression_predicate?(statement, expression_pred: ->(e) { expression_uses_named_call?(e, callees) })
end

#statement_uses_str_equality?(statement) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 482

def statement_uses_str_equality?(statement)
  statement_matches_expression_predicate?(statement, expression_pred: ->(e) { expression_uses_str_equality?(e) })
end

#statement_uses_vector_math?(stmt) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 65

def statement_uses_vector_math?(stmt)
  case stmt
  when IR::LocalDecl
    type_contains_vector_math?(stmt.type)
  when IR::Assignment
    type_contains_vector_math?(stmt.target.type) || expression_uses_vector_math?(stmt.value)
  when IR::ExpressionStmt
    expression_uses_vector_math?(stmt.expression)
  when IR::ReturnStmt
    stmt.value && expression_uses_vector_math?(stmt.value)
  when IR::BlockStmt
    stmt.body.any? { |s| statement_uses_vector_math?(s) }
  when IR::WhileStmt
    stmt.body.any? { |s| statement_uses_vector_math?(s) }
  when IR::ForStmt
    stmt.body.any? { |s| statement_uses_vector_math?(s) }
  when IR::IfStmt
    stmt.then_body.any? { |s| statement_uses_vector_math?(s) } ||
      (stmt.else_body && stmt.else_body.any? { |s| statement_uses_vector_math?(s) })
  when IR::SwitchStmt
    stmt.cases.any? { |c| c.body.any? { |s| statement_uses_vector_math?(s) } }
  else
    false
  end
end

#struct_equality_types ⇒ Object 



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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 331

def struct_equality_types
  @struct_equality_types ||= aggregate_equality_types.select { |type| struct_equality_type?(type) || type.is_a?(Types::VariantArmPayload) }
end

#type_contains_string_view?(type) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 33

def type_contains_string_view?(type)
  return false unless type
  return true if type.is_a?(Types::StringView)
  case type
  when Types::Nullable
    type_contains_string_view?(type.base)
  when Types::Span
    type_contains_string_view?(type.element_type)
  when Types::GenericInstance
    type.arguments.any? { |a| type_contains_string_view?(a) }
  else
    false
  end
end

#type_contains_vector_math?(type) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 116

def type_contains_vector_math?(type)
  return false unless type
  return true if type.is_a?(Types::Vector) || type.is_a?(Types::Matrix) || type.is_a?(Types::Quaternion)
  case type
  when Types::Nullable
    type_contains_vector_math?(type.base)
  when Types::Span
    type_contains_vector_math?(type.element_type)
  when Types::GenericInstance
    type.arguments.any? { |a| type_contains_vector_math?(a) }
  else
    false
  end
end

#uses_async_memory_helpers? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 160

def uses_async_memory_helpers?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_async_alloc mt_async_free]) }
end

#uses_cyclic_variant_heap_copy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 164

def uses_cyclic_variant_heap_copy?
  all_variants = emitted_aggregate_variants + collect_generic_variant_decls
  all_variants.any? do |v|
    v.arms.any? do |arm|
      arm.fields.any? do |f|
        aggregate_field_creates_cycle?(f.type, v.linkage_name)
      end
    end
  end
end

#uses_detach_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 183

def uses_detach_helper?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_detach_run mt_detach_join]) }
end

#uses_entrypoint_argv_helpers? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 152

def uses_entrypoint_argv_helpers?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_entry_argv_to_span_str mt_free_entry_argv_strs]) }
end

#uses_fatal_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 131

def uses_fatal_helper?
  uses_mt_fatal_helper? || uses_mt_fatal_str_helper?
end

#uses_fmt_builder? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 6

def uses_fmt_builder?
  return @uses_fmt_builder if defined?(@uses_fmt_builder)

  @uses_fmt_builder = emitted_functions.any? do |function|
    function_uses_named_call?(function, %w[mt_fmt_begin])
  end
end

#uses_foreign_temp_cstr_helpers? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 148

def uses_foreign_temp_cstr_helpers?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_foreign_str_to_cstr_temp mt_free_foreign_cstr_temp mt_foreign_strs_to_cstrs_temp mt_free_foreign_cstrs_temp]) }
end

#uses_format_helpers? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 285

def uses_format_helpers?
  !required_format_helper_callees.empty?
end

#uses_mt_fatal_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 135

def uses_mt_fatal_helper?
  return true if @debug_guards

  collect_checked_array_index_types.any? || collect_checked_span_index_types.any? ||
    !collect_span_slice_helper_names.empty? ||
    uses_format_helpers? ||
    emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_fatal mt_str_buffer_len mt_str_buffer_as_cstr mt_str_buffer_assign mt_str_buffer_append mt_foreign_str_to_cstr_temp mt_foreign_strs_to_cstrs_temp mt_str_concat mt_str_index mt_str_slice]) }
end

#uses_mt_fatal_str_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 144

def uses_mt_fatal_str_helper?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_fatal_str]) }
end

#uses_parallel_for_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 175

def uses_parallel_for_helper?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_parallel_for]) }
end

#uses_spawn_all_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 179

def uses_spawn_all_helper?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_spawn_all]) }
end

#uses_str_buffer_helpers? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 156

def uses_str_buffer_helpers?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_str_buffer_len mt_str_buffer_as_cstr mt_str_buffer_clear mt_str_buffer_assign mt_str_buffer_append mt_str_buffer_prepare_write]) }
end

#uses_str_concat_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 293

def uses_str_concat_helper?
  return @uses_str_concat if defined?(@uses_str_concat)

  @uses_str_concat = emitted_functions.any? do |function|
    function_uses_named_call?(function, %w[mt_str_concat])
  end
end

#uses_str_equality_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 289

def uses_str_equality_helper?
  emitted_functions.any? { |function| function_uses_str_equality?(function) }
end

#uses_str_slice_helpers? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 301

def uses_str_slice_helpers?
  emitted_functions.any? { |function| function_uses_named_call?(function, %w[mt_str_index mt_str_slice]) }
end

#uses_string_view? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 14

def uses_string_view?
  return @uses_string_view if defined?(@uses_string_view)
  @uses_string_view = begin
    uses_fatal_helper? || uses_format_helpers? || uses_str_buffer_helpers? ||
      uses_entrypoint_argv_helpers? || uses_str_equality_helper? ||
      uses_foreign_temp_cstr_helpers? ||
      emitted_functions.any? do |function|
        type_contains_string_view?(function.return_type) ||
          function.params.any? { |param| type_contains_string_view?(param.type) }
      end ||
      emitted_aggregate_structs.any? { |s| s.fields.any? { |f| type_contains_string_view?(f.type) } } ||
      emitted_aggregate_unions.any? { |u| u.fields.any? { |f| type_contains_string_view?(f.type) } } ||
      emitted_aggregate_variants.any? { |v| v.arms.any? { |a| a.fields.any? { |f| type_contains_string_view?(f.type) } } } ||
      emitted_constants.any? { |c| type_contains_string_view?(c.type) } ||
      emitted_globals.any? { |g| type_contains_string_view?(g.type) } ||
      !collect_str_literals.empty?
  end
end

#uses_struct_equality_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 309

def uses_struct_equality_helper?
  !struct_equality_types.empty?
end

#uses_variant_equality_helper? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 305

def uses_variant_equality_helper?
  !variant_equality_types.empty?
end

#uses_vector_math_types? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 48

def uses_vector_math_types?
  return @uses_vector_math_types if defined?(@uses_vector_math_types)
  @uses_vector_math_types = begin
    emitted_functions.any? do |function|
      type_contains_vector_math?(function.return_type) ||
        function.params.any? { |param| type_contains_vector_math?(param.type) } ||
        function.body.any? { |stmt| statement_uses_vector_math?(stmt) }
    end ||
      emitted_aggregate_structs.any? { |s| s.fields.any? { |f| type_contains_vector_math?(f.type) } } ||
      emitted_aggregate_unions.any? { |u| u.fields.any? { |f| type_contains_vector_math?(f.type) } } ||
      emitted_aggregate_variants.any? { |v| v.arms.any? { |a| a.fields.any? { |f| type_contains_vector_math?(f.type) } } } ||
      emitted_constants.any? { |c| type_contains_vector_math?(c.type) } ||
      emitted_globals.any? { |g| type_contains_vector_math?(g.type) }
  end
  @uses_vector_math_types
end

#variant_equality_types ⇒ Object 



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# File 'lib/milk_tea/core/c_backend/feature_detection.rb', line 335

def variant_equality_types
  @variant_equality_types ||= aggregate_equality_types.select { |type| type.is_a?(Types::Variant) }
end