Class: Udb::ExtensionVersion

Inherits:
Object
  • Object
show all
Extended by:
T::Sig
Includes:
Comparable
Defined in:
lib/udb/obj/extension.rb,
lib/udb/condition.rb

Overview

A specific version of an extension

Defined Under Namespace

Classes: MemomizedState

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, version_spec, arch, fail_if_version_does_not_exist: false)

Parameters:

  • version (String) —

    The version specifier

  • name (String) —

    The extension name

  • version_spec (VersionSpec)
  • arch (ConfiguredArchitecture) —

    The architecture definition

  • fail_if_version_does_not_exist (Boolean) (defaults to: false) 


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# File 'lib/udb/obj/extension.rb', line 498

def initialize(name, version_spec, arch, fail_if_version_does_not_exist: false)
  @name = name.freeze
  @version_spec = version_spec.freeze
  @version_str = @version_spec.canonical.freeze

  @arch = arch

  @ext = @arch.extension(@name)
  if fail_if_version_does_not_exist && @ext.nil?
    raise "Extension #{name} not found in architecture"
  elsif @ext.nil?
    Udb.logger.warn "Extension #{name} not found in architecture"
    return # can't go futher
  end

  @data = @ext.data["versions"].find { |v| VersionSpec.new(v["version"]) == @version_spec }

  if fail_if_version_does_not_exist && @data.nil?
    raise ArgumentError, "Version #{version_str} of #{@name} extension is not defined"
  elsif @data.nil?
    Udb.logger.warn "Version #{version_str} of #{@name} extension is not defined"
  end

  @memo = MemomizedState.new
end

Instance Attribute Details

#arch ⇒ ConfiguredArchitecture (readonly)

Returns:



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# File 'lib/udb/obj/extension.rb', line 447

def arch
  @arch
end

#ext ⇒ Extension (readonly)

Returns Extension.

Returns:



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# File 'lib/udb/obj/extension.rb', line 436

def ext
  @ext
end

#name ⇒ String (readonly)

Returns Name of the extension.

Returns:

  • (String) —

    Name of the extension



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# File 'lib/udb/obj/extension.rb', line 432

def name
  @name
end

#version_spec ⇒ VersionSpec (readonly)

Returns:



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# File 'lib/udb/obj/extension.rb', line 440

def version_spec
  @version_spec
end

#version_str ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/udb/obj/extension.rb', line 444

def version_str
  @version_str
end

Class Method Details

.create(yaml, cfg_arch) ⇒ ExtensionVersion

create an ExtensionVersion from YAML

Parameters:

Returns:



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# File 'lib/udb/obj/extension.rb', line 456

def self.create(yaml, cfg_arch)
  requirements =
    if yaml.key?("version")
      yaml.fetch("version")
    else
      raise "not an extension version"
    end
  if requirements.is_a?(Array)
    if requirements.size != 1
      raise "not an extension version: #{requirements} (#{requirements.size})"
    end
    requirements = requirements.fetch(0)
  end
  begin
    cfg_arch.extension_version(yaml.fetch("name"), RequirementSpec.new(requirements).version_spec)
  rescue
    raise "not an extension version"
  end
end

.to_ext_req(ext_vers) ⇒ ExtensionRequirement

given a set of extension versions from the same extension, return the minimal set of extension requirements that would cover then all

Parameters:

Returns:



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# File 'lib/udb/obj/extension.rb', line 542

def self.to_ext_req(ext_vers)
  raise "ext_vers cannot be empty" if ext_vers.empty?
  raise "All ext_vers must be of the same extension" unless ext_vers.all? { |ev| ev.name == ext_vers.fetch(0).name }

  sorted = ext_vers.sort
  unless T.must(sorted.min).compatible?(T.must(sorted.max))
    raise "Impossible to combine because the set contains incompatible versions"
  end

  ext_vers.fetch(0).arch.extension_requirement(ext_vers.fetch(0).name, "~> #{T.must(sorted.min).version_str}")
end

Instance Method Details

#<=>(other) ⇒ Integer?

sorts extension by name, then by version

Parameters:

  • other (T.untyped)

Returns:

  • (Integer, nil) 


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# File 'lib/udb/obj/extension.rb', line 1128

def <=>(other)
  return nil unless other.is_a?(ExtensionVersion)

  if other.name != @name
    @name <=> other.name
  else
    @version_spec <=> other.version_spec
  end
end

#all_csrs_that_must_be_implemented ⇒ Array<Csr>

Returns:



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# File 'lib/udb/obj/extension.rb', line 733

def all_csrs_that_must_be_implemented
  @all_csrs_that_must_be_implemented ||= csrs + implied_csrs
end

#all_instructions_that_must_be_implemented ⇒ Array<Instruction>

list of all instructions that must be defined if this extension version is implemented includes both those instructions directly defined by the extension plus any instruction that must exist because of a dependence

Returns:



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# File 'lib/udb/obj/extension.rb', line 695

def all_instructions_that_must_be_implemented
  @all_instructions_that_must_be_implemented ||=
    directly_defined_instructions + implied_instructions
end

#breaking? ⇒ Boolean

Returns Whether or not this is a breaking version (i.e., incompatible with all prior versions).

Returns:

  • (Boolean) —

    Whether or not this is a breaking version (i.e., incompatible with all prior versions)



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# File 'lib/udb/obj/extension.rb', line 599

def breaking?
  !@data["breaking"].nil?
end

#canonical_version ⇒ String

Returns Canonical version string.

Returns:

  • (String) —

    Canonical version string



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# File 'lib/udb/obj/extension.rb', line 605

def canonical_version = @version_spec.canonical

#changes ⇒ Array<String>?

Returns:

  • (Array<String>, nil) 


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# File 'lib/udb/obj/extension.rb', line 629

def changes = @data["changes"].nil? ? [] : T.cast(@data.fetch("changes"), T::Array[String])

#compatible?(other) ⇒ Boolean

Returns Whether or not other is compatible with self.

Parameters:

Returns:

  • (Boolean) —

    Whether or not other is compatible with self



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# File 'lib/udb/obj/extension.rb', line 595

def compatible?(other) = compatible_versions.include?(other)

#compatible_versions ⇒ Array<ExtensionVersion>

the list is inclsive (this version is present)

Returns:

  • (Array<ExtensionVersion>) —

    List of known ExtensionVersions that are compatible with this ExtensionVersion (i.e., have larger version number and are not breaking)



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# File 'lib/udb/obj/extension.rb', line 579

def compatible_versions
  return @memo.compatible_versions unless @memo.compatible_versions.nil?

  @memo.compatible_versions = []
  @ext.versions.each do |v|
    @memo.compatible_versions << v if v.version_spec >= @version_spec
    break if @memo.compatible_versions.size.positive? && v.breaking?
  end
  raise "Didn't even find self?" if compatible_versions.empty?

  @memo.compatible_versions
end

#condition_hash ⇒ Hash{String => T.untyped}, false

Returns:

  • (Hash{String => T.untyped}, false) 


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# File 'lib/udb/obj/extension.rb', line 567

def condition_hash
  {
    "extension" => {
      "name" => name,
      "version" => "= #{version_str}"
    }
  }
end

#conditional_extension_requirements(expand:) ⇒ Array<ConditionalExtensionRequirement>

Parameters:

  • expand (Boolean)

Returns:



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# File 'lib/udb/obj/extension.rb', line 927

def conditional_extension_requirements(expand:)
  if expand && !@memo.conditional_expanded_extension_requirements.nil?
    @memo.conditional_expanded_extension_requirements
  elsif !expand && !@memo.conditional_unexpanded_extension_requirements.nil?
    @memo.conditional_unexpanded_extension_requirements
  else
    req = requirements_condition.to_logic_tree(expand:)

    cb = LogicNode.make_replace_cb do |node|
      next node unless node.type == LogicNodeType::Term

      rterm = node.children.fetch(0)

      next node unless rterm.is_a?(ExtensionTerm)

        # remove self
      next LogicNode::True if rterm.to_ext_req(@arch).satisfied_by?(self)

        # remove terms unconditionally true or false
      next LogicNode::True if unconditional_extension_requirements(expand: true).any? { |ext_req| ext_req.satisfied_by?(rterm.to_ext_req(@arch)) }
      next LogicNode::False if unconditional_extension_conflicts(expand: true).any? { |ext_req| ext_req.satisfied_by?(rterm.to_ext_req(@arch)) }

      node
    end

    remaining =
      req.replace_terms(cb).minimize(LogicNode::CanonicalizationType::ProductOfSums)

    list = T.let([], T::Array[ConditionalExtensionRequirement])

    # for the remaining terms, find out which ones
    remaining.terms.each do |term|
      next unless term.is_a?(ExtensionTerm)

      # find unconditional reqs of self && term
      c = Condition.conjunction([term.to_condition(@arch), to_condition], @arch)
      ctree = c.to_logic_tree(expand: true)
      unconditional_terms = remaining.terms.select do |cterm|
        next if cterm.is_a?(ParameterTerm) || cterm.is_a?(XlenTerm)
        raise "?" if cterm.is_a?(FreeTerm)

        next if cterm.name == name
        next if cterm.name == term.name

        cb = LogicNode.make_replace_cb do |node|
          if node.type == LogicNodeType::Term && node.node_children.fetch(0).is_a?(ExtensionTerm)
            node_term = T.cast(node.node_children.fetch(0), ExtensionTerm)
            if node_term.name == name
              LogicNode::True
            elsif node_term.name == cterm.name
              LogicNode::False
            else
              node
            end
          else
            node
          end
        end
        !ctree.replace_terms(cb).satisfiable?
      end

      next if unconditional_terms.empty?

      if unconditional_terms.size == 1
        cond = T.cast(unconditional_terms.fetch(0), ExtensionTerm).to_ext_req(@arch).to_condition
        contradiction =
          Condition.conjunction(
            [
              cond,
              Condition.not(term.to_condition(@arch), @arch),
              to_condition
            ],
            @arch
          )
        is_needed = !contradiction.satisfiable?
        if is_needed
          if Condition.conjunction([cond, Condition.not(term.to_condition(@arch), @arch)], @arch).satisfiable? # skip reqs that are implied
            list << ConditionalExtensionRequirement.new(
              ext_req: term.to_ext_req(@arch),
              cond:
            )
          end
        end
      else
        conj = Condition.conjunction(unconditional_terms.map { |t| T.cast(t, ExtensionTerm).to_condition(@arch) }, @arch)
        conj_tree = conj.to_logic_tree(expand: false)
        formula = LogicNode.new(
          LogicNodeType::And,
          conj_tree.node_children.map do |node|
            covered = conj_tree.node_children.any? do |other_node|
              next false if node.equal?(other_node)

              if Condition.conjunction([to_condition, Condition.new(other_node.to_h, @arch)], @arch).always_implies?(Condition.new(node.to_h, @arch))
                true
              else
                false
              end
            end

            if covered
              LogicNode::True
            else
              node
            end
          end
        )
        # is this needed? if self can still be satisfied when condition is false but term is true,
        # this term isn't actually a requirement (it's most likely related to a conflict)
        contradiction =
          Condition.conjunction(
            [
              conj,
              Condition.not(term.to_condition(@arch), @arch),
              to_condition
            ],
            @arch
          )
        is_needed = !contradiction.satisfiable?
        cond = Condition.new(formula.reduce.to_h, @arch)
        if is_needed # && Condition.conjunction([cond, term.to_condition(@arch), to_condition], @arch).satisfiable? # make sure it's a requirement
          if Condition.conjunction([cond, Condition.not(term.to_condition(@arch), @arch)], @arch).satisfiable?
            list << ConditionalExtensionRequirement.new(
              ext_req: term.to_ext_req(@arch),
              cond:
            )
          end
        end
      end
    end

    if expand
      list.each do |cond_ext_req|
        ext_ver = T.must(cond_ext_req.ext_req.satisfying_versions.max)
        ext_ver.ext_requirements(expand:).each do |nested_cond_ext_req|
          already_in_cond_list =
            list.any? { |c| c.ext_req.satisfied_by?(nested_cond_ext_req.ext_req) } \
              || list.any? { |c| c.cond.to_logic_tree(expand: false).terms.any? { |t| T.cast(t, ExtensionTerm).to_ext_req(@arch).satisfied_by?(nested_cond_ext_req.ext_req) } }
          already_in_uncond_list =
            unconditional_extension_requirements(expand:).any? { |ext_req| nested_cond_ext_req.ext_req.satisfied_by?(ext_req) }
          next if already_in_uncond_list

          if already_in_cond_list
            # keep the one with the more expansive condition

          else
            if nested_cond_ext_req.cond.empty?
              list << ConditionalExtensionRequirement.new(
                ext_req: nested_cond_ext_req.ext_req,
                cond: cond_ext_req.cond
              )
            else
              list << ConditionalExtensionRequirement.new(
                ext_req: nested_cond_ext_req.ext_req,
                cond: Condition.conjunction([cond_ext_req.cond, nested_cond_ext_req.cond], @arch)
              )
            end
          end
        end
      end
    end

    if expand
      @memo.conditional_expanded_extension_requirements = list
      @memo.conditional_expanded_extension_requirements.freeze
    else
      @memo.conditional_unexpanded_extension_requirements = list
      @memo.conditional_unexpanded_extension_requirements.freeze
    end
  end
end

#contributors ⇒ Array<Person>

Returns List of contributors to this extension version.

Returns:

  • (Array<Person>) —

    List of contributors to this extension version



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# File 'lib/udb/obj/extension.rb', line 636

def contributors
  return @contributors unless @contributors.nil?

  @contributors = []
  @data["contributors"]&.each do |c|
    @contributors << Person.new(c)
  end
  @contributors
end

#csrs ⇒ Array<Csr>

Returns:



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# File 'lib/udb/obj/extension.rb', line 706

def csrs
  @csrs ||=
    ext.csrs.select do |csr|
      (csr.defined_by_condition & to_condition).satisfiable?
    end
end

#defining_extension_requirements ⇒ Array<ConditionalExtensionRequirement>

Returns:



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# File 'lib/udb/obj/extension.rb', line 788

def defining_extension_requirements
  []
  # combined_requirements_condition.implied_extension_requirements
end

#directly_defined_instructions ⇒ Array<Instruction>

excluding instructions required by a dependence

Returns:

  • (Array<Instruction>) —

    the list of instructions that must be implemented when self is implemented,



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# File 'lib/udb/obj/extension.rb', line 658

def directly_defined_instructions
  @instructions ||=
    ext.instructions.select do |inst|
      (inst.defined_by_condition & to_condition).satisfiable?
    end
end

#directly_defined_instructions_set ⇒ Set<Instruction>

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:



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# File 'lib/udb/obj/extension.rb', line 667

def directly_defined_instructions_set
  @instructions_set ||= Set.new(directly_defined_instructions)
end

#eql?(other) ⇒ Boolean

Parameters:

  • other (T.untyped)

Returns:

  • (Boolean) 


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# File 'lib/udb/obj/extension.rb', line 608

def eql?(other)
  if other.is_a?(ExtensionVersion)
    self.==(other)
  else
    false
  end
end

#exception_codes ⇒ Array<ExceptionCode>

the list of exception codes that require this extension version (or a compatible version) in order to be defined

Returns:



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# File 'lib/udb/obj/extension.rb', line 1141

def exception_codes
  @exception_codes ||=
    @arch.exception_codes.select do |ecode|
      # define every extension version except this one (and compatible),
      # and test if the condition can be satisfied
      ecode.defined_by_condition.satisfied_by_ext_req?(@arch.extension_requirement(@name, "~> #{@version_spec}"), include_requirements: false) ||
        ecode.defined_by_condition.satisfiability_depends_on_ext_req?(@arch.extension_requirement(@name, "~> #{@version_spec}"))
    end
end

#ext_conflicts(expand:) ⇒ Array<ConditionalExtensionRequirement>

Parameters:

  • expand (Boolean)

Returns:



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# File 'lib/udb/obj/extension.rb', line 1115

def ext_conflicts(expand:)
  # make a condition for the version, expand it, and then report what comes out, minus self
  if expand
    @memo.expanded_ext_conflicts ||=
      unconditional_extension_conflicts(expand:).map { |ext_req| ConditionalExtensionRequirement.new(ext_req:, cond: AlwaysTrueCondition.new(@arch)) }
  else
    @memo.unexpanded_ext_conflicts ||=
      unconditional_extension_conflicts(expand:).map { |ext_req| ConditionalExtensionRequirement.new(ext_req:, cond: AlwaysTrueCondition.new(@arch)) }
  end
end

#ext_requirements(expand:) ⇒ Array<ConditionalExtensionRequirement>

list of requirements that must be met to implement this ExtensionVersion If conditional, the requirement only applies when the condition is true

Parameters:

  • expand (Boolean)

Returns:



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# File 'lib/udb/obj/extension.rb', line 1101

def ext_requirements(expand:)
  # make a condition for the version, expand it, and then report what comes out, minus self
  if expand
    @memo.expanded_ext_requirements ||=
      unconditional_extension_requirements(expand:).map { |ext_req| ConditionalExtensionRequirement.new(ext_req:, cond: AlwaysTrueCondition.new(@arch)) } \
        + conditional_extension_requirements(expand:)
  else
    @memo.unexpanded_ext_requirements ||=
      unconditional_extension_requirements(expand:).map { |ext_req| ConditionalExtensionRequirement.new(ext_req:, cond: AlwaysTrueCondition.new(@arch)) } \
        + conditional_extension_requirements(expand:)
  end
end

#hash ⇒ Integer

Returns:

  • (Integer) 


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# File 'lib/udb/obj/extension.rb', line 617

def hash
  @memo.key ||= [@name, @version_spec].hash
end

#implied_csrs ⇒ Array<Csr>

Returns:



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# File 'lib/udb/obj/extension.rb', line 714

def implied_csrs
  @implied_csrs ||=
    begin
      pb =
        Udb.create_progressbar(
          "Finding implied csrs for #{self} [:bar] :current/:total",
          total: @arch.csrs.size,
          clear: true
        )
      @arch.csrs.select do |csr|
        pb.advance
        if csr.defined_by_condition.mentions?(self, expand: true)
          (-csr.defined_by_condition & requirements_condition).unsatisfiable?
        end
      end
    end
end

#implied_instructions ⇒ Array<Instruction>

Returns:



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# File 'lib/udb/obj/extension.rb', line 672

def implied_instructions
  @implied_instructions ||=
    begin
      pb =
        Udb.create_progressbar(
          "Finding implied instructions for #{self} [:bar] :current/:total",
          total: @arch.instructions.size,
          clear: true
        )
      @arch.instructions.select do |i|
        pb.advance

        next if directly_defined_instructions_set.include?(i)

        (-i.defined_by_condition & to_condition).unsatisfiable?
      end
    end
end

#implied_instructions_set ⇒ Set<Instruction>

Returns:



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# File 'lib/udb/obj/extension.rb', line 701

def implied_instructions_set
  @implied_instructions_set ||= Set.new(implied_instructions)
end

#in_scope_csrs(xlens) ⇒ Array<Csr>

Parameters:

  • xlens (Array<Integer>)

Returns:



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# File 'lib/udb/obj/extension.rb', line 1163

def in_scope_csrs(xlens)
  csrs.select do |csr|
    csr.base.nil? || xlens.include?(csr.base)
  end
end

#in_scope_instructions(xlens) ⇒ Array<Instruction>

Parameters:

  • xlens (Array<Integer>)

Returns:



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# File 'lib/udb/obj/extension.rb', line 1170

def in_scope_instructions(xlens)
  directly_defined_instructions.select do |inst|
    inst.base.nil? || xlens.include?(inst.base)
  end
end

#inspect ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/udb/obj/extension.rb', line 530

def inspect
  to_s
end

#interrupt_codes ⇒ Array<InterruptCode>

the list of interrupt codes that require this extension version (or a compatible version) in order to be defined

Returns:



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# File 'lib/udb/obj/extension.rb', line 1154

def interrupt_codes
  @interrupt_codes ||=
    @arch.interrupt_codes.select do |icode|
      icode.defined_by_condition.satisfied_by_ext_req?(@arch.extension_requirement(@name, "~> #{@version_spec}"), include_requirements: false) ||
        icode.defined_by_condition.satisfiability_depends_on_ext_req?(@arch.extension_requirement(@name, "~> #{@version_spec}"))
    end
end

#params ⇒ Array<Parameter, ParameterWithValue>

Returns The list of parameters for this extension version.

Returns:



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# File 'lib/udb/obj/extension.rb', line 648

def params
  @params ||=
    ext.params.select do |param|
      (param.defined_by_condition & to_condition).satisfiable?
    end
end

#ratification_date ⇒ String?

Returns:

  • (String, nil) 


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# File 'lib/udb/obj/extension.rb', line 626

def ratification_date = @data["ratification_date"]

#requirements_condition ⇒ AbstractCondition

the combination of this extension version requirement along with the overall extension requirements

Returns:



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# File 'lib/udb/obj/extension.rb', line 768

def requirements_condition
  @requirements_condition ||=
    if @data.key?("requirements") && ext.data.key?("requirements")
      Condition.new(
        {
          "allOf" => [
            @data.fetch("requirements"),
            ext.data.fetch("requirements")
          ]
        },
        @arch
      )
    elsif !@data.key?("requirements")
      ext.general_extension_requirements_condition
    else
      version_specific_requirements_condition
    end
end

#state ⇒ String

Returns The state of the extension version (‘ratified’, ‘developemnt’, etc).

Returns:

  • (String) —

    The state of the extension version (‘ratified’, ‘developemnt’, etc)



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# File 'lib/udb/obj/extension.rb', line 623

def state = T.cast(@data.fetch("state"), String)

#to_condition ⇒ AbstractCondition

Returns:



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# File 'lib/udb/obj/extension.rb', line 561

def to_condition
  @memo.condition ||=
    Condition.new(condition_hash, @arch)
end

#to_ext_req ⇒ ExtensionRequirement

Returns:



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# File 'lib/udb/obj/extension.rb', line 1177

def to_ext_req
  @ext_req ||= @arch.extension_requirement(name, "= #{version_str}")
end

#to_h ⇒ Hash{String => T.untyped}

Returns:

  • (Hash{String => T.untyped}) 


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# File 'lib/udb/obj/extension.rb', line 1182

def to_h
  @h ||=
    {
      "name" => @name,
      "version" => "= #{version_str}"
    }
end

#to_rvi_s ⇒ String

Returns formatted like the RVI manual.

Examples:

ExtensionVersion.new("A", "2.2").to_rvi_s #=> "A2p2"

Returns:

  • (String) —

    formatted like the RVI manual



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# File 'lib/udb/obj/extension.rb', line 742

def to_rvi_s
  "#{name}#{@version_spec.to_rvi_s}"
end

#to_s ⇒ String

Returns Ext@Version.

Returns:

  • (String) —

    Ext@Version



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# File 'lib/udb/obj/extension.rb', line 748

def to_s
  "#{name}@#{@version_spec.canonical}"
end

#to_term ⇒ ExtensionTerm

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:



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# File 'lib/udb/obj/extension.rb', line 556

def to_term
  @memo.term ||= ExtensionTerm.new(@name, "=", @version_str)
end

#unconditional_extension_conflicts(expand:) ⇒ Array<ExtensionRequirement>

return all ExtensionRequirements that this ExtensionVersion unconditionally conflicts with When expand is false, just return the list of ExtensionRequirements directly mentioned by the extension When expand is true, also include ExtensionRequirements that are required by those directly mentioned by the extension

(i.e., collect the list from the transitive closure of requirements)

Parameters:

  • expand (Boolean)

Returns:



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# File 'lib/udb/obj/extension.rb', line 871

def unconditional_extension_conflicts(expand:)
  if expand && !@memo.unconditional_expanded_ext_conflicts.nil?
    @memo.unconditional_expanded_ext_conflicts
  elsif !expand && !@memo.unconditional_unexpanded_ext_conflicts.nil?
    @memo.unconditional_unexpanded_ext_conflicts
  else
    list =
      begin
        requirements_condition.ext_req_terms(expand:).select do |ext_req|
          (requirements_condition & ext_req.to_condition).unsatisfiable?
        end


        # req = requirements_condition.to_logic_tree(expand:)
        # expand_req = requirements_condition.to_logic_tree(expand: true)

        # # find all unconditional reqs -- that is,
        # # reqs that must always be satisfied for requirements to be met
        # unconditional_terms =
        #   req.terms.select do |term|
        #     next if term.is_a?(ParameterTerm) || term.is_a?(XlenTerm)
        #     raise "?" if term.is_a?(FreeTerm)

        #     next if term.name == name

        #     # see if req is unsatisfiable when term is present
        #     cb = LogicNode.make_replace_cb do |node|
        #       if node.type == LogicNodeType::Term && node.node_children.fetch(0).is_a?(ExtensionTerm)
        #         node_term = T.cast(node.node_children.fetch(0), ExtensionTerm)
        #         if node_term.name == name
        #           LogicNode::True
        #         elsif node_term.name == term.name
        #           LogicNode::True
        #         else
        #           node
        #         end
        #       else
        #         node
        #       end
        #     end
        #     !expand_req.replace_terms(cb).satisfiable?
        #   end

        # T.cast(unconditional_terms, T::Array[ExtensionTerm]).map { |t| t.to_ext_req(@arch) }
      end
    if expand
      @memo.unconditional_expanded_ext_conflicts = list
      @memo.unconditional_expanded_ext_conflicts.freeze
    else
      @memo.unconditional_unexpanded_ext_conflicts = list
      @memo.unconditional_unexpanded_ext_conflicts.freeze
    end
  end
end

#unconditional_extension_requirements(expand:) ⇒ Array<ExtensionRequirement>

return all ExtensionRequirements that this ExtensionVersion unconditionally depends on When expand is false, just return the list of ExtensionRequirements directly mentioned by the extension When expand is true, also include ExtensionRequirements that are required by those directly mentioned by the extension

(i.e., collect the list from the transitive closure of requirements)

Parameters:

  • expand (Boolean)

Returns:



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# File 'lib/udb/obj/extension.rb', line 798

def unconditional_extension_requirements(expand:)
  if expand && !@memo.unconditional_expanded_ext_reqs.nil?
    @memo.unconditional_expanded_ext_reqs
  elsif !expand && !@memo.unconditional_unexpanded_ext_reqs.nil?
    @memo.unconditional_unexpanded_ext_reqs
  else
    list =
      begin
        requirements_condition.ext_req_terms(expand:).select do |ext_req|
          # is requirements_condition satisfiable when ext_req is not met?
          (requirements_condition & -ext_req.to_condition).unsatisfiable?
        end


        # req = requirements_condition.to_logic_tree(expand:)
        # expand_req = requirements_condition.to_logic_tree(expand: true)

        # # find all unconditional reqs -- that is,
        # # reqs that must always be satisfied for requirements to be met
        # unconditional_terms =
        #   req.terms.select do |term|
        #     next if term.is_a?(ParameterTerm) || term.is_a?(XlenTerm)
        #     raise "?" if term.is_a?(FreeTerm)

        #     next if term.name == name

        #     # see if req is satisfiable when term is absent
        #     cb = LogicNode.make_replace_cb do |node|
        #       if node.type == LogicNodeType::Term && node.node_children.fetch(0).is_a?(ExtensionTerm)
        #         node_term = T.cast(node.node_children.fetch(0), ExtensionTerm)
        #         if node_term.name == name
        #           LogicNode::True
        #         elsif node_term.name == term.name
        #           LogicNode::False
        #         else
        #           node
        #         end
        #       else
        #         node
        #       end
        #     end
        #     !expand_req.replace_terms(cb).satisfiable?
        #   end
        # T.cast(unconditional_terms, T::Array[ExtensionTerm]).map { |t| t.to_ext_req(@arch) }
      end
    if expand
      @memo.unconditional_expanded_ext_reqs = list
      @memo.unconditional_expanded_ext_reqs.freeze
    else
      @memo.unconditional_unexpanded_ext_reqs = list
      @memo.unconditional_unexpanded_ext_reqs.freeze
    end
  end
end

#unconditional_extension_version_conflicts ⇒ Array<ExtensionVersion>

return the exhaustive, transitive list of all known extension versions that unconditionally conflict with self

Returns:



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# File 'lib/udb/obj/extension.rb', line 856

def unconditional_extension_version_conflicts
  @unconditional_extension_version_conflicts ||=
    @arch.extension_versions.select do |ext_ver|
      next if ext_ver.name == name

      (to_condition & ext_ver.to_condition).unsatisfiable?
      # !Condition.conjunction([to_condition, ext_ver.to_condition], @arch).satisfiable?
    end
end

#url ⇒ String?

Returns:

  • (String, nil) 


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# File 'lib/udb/obj/extension.rb', line 632

def url = @data["url"]

#valid? ⇒ Boolean

true if the extension version is defined in the database, regardless of config false otherwise

Returns:

  • (Boolean) 


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# File 'lib/udb/obj/extension.rb', line 527

def valid? = !@ext.nil?

#version_specific_requirements_condition ⇒ AbstractCondition

Returns Condition that must be met for this version to be allowed.

Returns:



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# File 'lib/udb/obj/extension.rb', line 754

def version_specific_requirements_condition
  @requirements_condition ||=
    @data.key?("requirements") \
      ? Condition.new(
          @data.fetch("requirements"),
          @arch,
          input_file: Pathname.new(ext.__source),
          input_line: ext.source_line(["versions", ext.data.fetch("versions").index { |v| VersionSpec.new(v["version"]) == version_spec }])
        )
      : AlwaysTrueCondition.new(@arch)
end