Module: R::Support

Defined in:
lib/R_interface/rsupport.rb,
lib/R_interface/r_methods.rb,
lib/R_interface/rsupport_scope.rb

Defined Under Namespace

Classes: BatchCollector

Constant Summary collapse

DISPATCH_PROBE_CACHE_MAX =

Phase 3: cache bridge dispatch_probe(handle, name) → { is_field, is_func } (FIFO eviction).

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TRANSPORT_NL = 
"\uE000".freeze
MAX_UNBOX_DEPTH =

Maximum recursion depth when unboxing lists. Beyond this we raise UnboxDepthError.

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MD_INDEX_BACKTICK = 
'`[`'.freeze
MD_ASSIGN_BACKTICK = 
'`[<-`'.freeze
@@var_id = 
0
@@var_id_mutex = 
Mutex.new

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.dispatch_probe_cache_hits ⇒ Object (readonly)

Returns the value of attribute dispatch_probe_cache_hits.



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# File 'lib/R_interface/rsupport.rb', line 43

def dispatch_probe_cache_hits
  @dispatch_probe_cache_hits
end

.dispatch_probe_cache_misses ⇒ Object (readonly)

Returns the value of attribute dispatch_probe_cache_misses.



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# File 'lib/R_interface/rsupport.rb', line 43

def dispatch_probe_cache_misses
  @dispatch_probe_cache_misses
end

Class Method Details

.batch_eval_with_result(assignment_codes) ⇒ Object 



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# File 'lib/R_interface/rsupport.rb', line 670

def self.batch_eval_with_result(assignment_codes)
  R.bridge.batch_eval_r_with_result(Array(assignment_codes))
end

.build_subscript_assign_do_call_alist(receiver, kw_hash) ⇒ Object

[<- with i/j = :all (R::DataFrame#[]=). Same tidyselect / anyNA issues with missing_arg().



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# File 'lib/R_interface/rsupport.rb', line 305

def self.build_subscript_assign_do_call_alist(receiver, kw_hash)
  pairs = kw_hash.map do |k, v|
    key = k.to_s.gsub(/__/, ".")
    key_r = (key =~ /\A[a-zA-Z._][a-zA-Z0-9._]*\z/) ? key : "`#{key.gsub('`', '\\`')}`"
    if v.is_a?(::Symbol) && v == :all
      "#{key_r} = "
    else
      "#{key_r} = #{parse_arg(v)}"
    end
  end
  inner = [parse_arg(receiver), *pairs].join(", ")
  "do.call(`[<-`, alist(#{inner}))"
end

.build_subscript_do_call_alist(all_args) ⇒ Object

R [ with a true missing dimension (Ruby :all). tidyselect on tbl_df rejects missing_arg() results as subscripts ("empty string"); alist(, ) is real missing.



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# File 'lib/R_interface/rsupport.rb', line 296

def self.build_subscript_do_call_alist(all_args)
  inner = all_args.map do |arg|
    (arg.is_a?(::Symbol) && arg == :all) ? nil : parse_arg(arg)
  end
  inner = inner.map { |frag| frag.nil? ? '' : frag }.join(', ')
  "do.call(`[`, alist(#{inner}))"
end

.capture ⇒ Object

Galaaz 2.0: In the Shadow Bridge, these methods return the name of the R function as a string handle.



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# File 'lib/R_interface/r_methods.rb', line 31

def self.capture
  "capture" # Requires capture to be defined in R
end

.capture2 ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 35

def self.capture2
  "capture2"
end

.clear_dispatch_probe_handle_cache! ⇒ Object 



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# File 'lib/R_interface/rsupport.rb', line 57

def self.clear_dispatch_probe_handle_cache!
  @dispatch_probe_cache_mx.synchronize do
    @dispatch_probe_handle_cache.clear
    @dispatch_probe_handle_fifo.clear
  end
end

.convert_symbol2r(symbol) ⇒ Object

Convert a Ruby method name to the R name: __ => ., ___ => ::, rclass => class, eql => ==.



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# File 'lib/R_interface/rsupport.rb', line 92

def self.convert_symbol2r(symbol)
  name = symbol.to_s
  name.gsub!(/___/, "::")
  name.gsub!(/__/, ".")
  case name
  when "rclass" then "class"
  when "eql"    then "=="
  else name
  end
end

.create_bin_expr(operator) ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 67

def self.create_bin_expr(operator)
  "function(op1, op2) { #{operator}(op1, op2) }"
end

.dbk_index ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 47

def self.dbk_index
  "`[[`"
end

.dispatch_probe_cache_key(handle, name) ⇒ Object 



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# File 'lib/R_interface/rsupport.rb', line 64

def self.dispatch_probe_cache_key(handle, name)
  "#{handle}\u0000#{name}"
end

.dispatch_probe_handle_cache_size ⇒ Object 



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# File 'lib/R_interface/rsupport.rb', line 53

def self.dispatch_probe_handle_cache_size
  @dispatch_probe_cache_mx.synchronize { @dispatch_probe_handle_cache.size }
end

.enquo ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 59

def self.enquo
  "enquo"
end

.eval(string) ⇒ Object

Evaluate an R expression (string, Language, or handle). Returns a scalar value or R::Object.build(...). Uses .expression or .r_interop when present so we never treat R's printed output as code.



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# File 'lib/R_interface/rsupport.rb', line 105

def self.eval(string)
  puts "DEBUG: Support.eval(#{string.inspect})" if ENV['GALAAZ_DEBUG']

  var_name = self.generate_var_name
  r_code = if string.respond_to?(:expression) && string.expression
             string.expression.to_s
           elsif string.respond_to?(:r_interop) && string.r_interop.is_a?(::String) && string.r_interop.start_with?("g2_v")
             string.r_interop
           else
             string.to_s
           end
  
  # Determine if we need to wrap in braces or use eval()
  # If it's a handle, we MUST use eval() in R to get its value if it's a symbol
  final_r_code = if r_code.start_with?("g2_v")
                   "eval(#{r_code})"
                 elsif r_code.include?("\n") && !r_code.strip.start_with?("{") && !r_code.include?("<-") && !r_code.include?("=")
                   "{#{r_code}\n}"
                 else
                   r_code
                 end

  assignment = "#{var_name} <- { #{final_r_code}\n }"
  envelope = R.bridge.eval_r_with_result(assignment)
  if ENV['GALAAZ_DEBUG']
    puts "DEBUG: eval envelope=#{envelope.inspect}"
  end
  raise "Result protocol: no envelope (buffer missing or invalid)" unless envelope

  case envelope[:type]
  when :scalar_double, :scalar_integer, :scalar_logical
    return envelope[:value]
  when :scalar_character
    return R::Object.build(var_name, nil, r_class: "character")
  when :scalar_symbol
    sym_name = envelope[:value].to_s
    return sym_name.gsub("::", "___").gsub(".", "__").to_sym
  when :handle
    # Protocol spec: eval returns scalar symbol as Ruby Symbol. R sends symbol/name as handle (type 4); unbox here only.
    r_class = envelope[:r_class].to_s.strip
    if r_class == "name" || r_class == "symbol"
      raw = R.bridge.eval_r("as.character(#{envelope[:handle]})").to_s
      m = raw.match(/\[1\]\s*"([^"]*)"/)
      name = m ? m[1] : raw.strip
      return name.gsub("::", "___").gsub(".", "__").to_sym
    end
    return R::Object.build(envelope[:handle], nil, r_class: envelope[:r_class], wrapper_tag: envelope[:wrapper_tag])
  else
    raise "Result protocol: unknown envelope type #{envelope[:type].inspect}"
  end
end

.exec_function(function, *args, unbox: false, **kwargs) ⇒ Object Also known as: exec_function_name

Run an R call: f_name(args...). Builds assignment, gets envelope from bridge, returns R::Object (boxed). Unbox with .to_ruby, .unboxed_get(0), or >> 0. kwargs (e.g. i:, value:) are merged into args for R named-argument calls like [[<-(df, i=..., value=...).



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# File 'lib/R_interface/rsupport.rb', line 324

def self.exec_function(function, *args, unbox: false, **kwargs)
  f_name = function.respond_to?(:r_interop) ? function.r_interop : function

  if args.empty? && kwargs.empty? && (f_name.include?("::") || f_name.start_with?("g2_v"))
    return self.eval(f_name)
  end

  var_name = self.generate_var_name
  all_args = kwargs.empty? ? args : args + [kwargs]

  use_subscript_alist =
    kwargs.empty? &&
    f_name == MD_INDEX_BACKTICK &&
    all_args.any? { |a| a.is_a?(::Symbol) && a == :all } &&
    !all_args.any? { |a| a.is_a?(Hash) }

  use_assign_alist =
    !kwargs.empty? &&
    f_name == MD_ASSIGN_BACKTICK &&
    all_args.size == 2 &&
    all_args[1].is_a?(Hash) &&
    all_args[1].values.any? { |v| v.is_a?(::Symbol) && v == :all }

  if use_subscript_alist
    r_expr = build_subscript_do_call_alist(all_args)
  elsif use_assign_alist
    r_expr = build_subscript_assign_do_call_alist(all_args[0], all_args[1])
  else
    r_args = all_args.map { |arg| self.parse_arg(arg) }
    # eval(expr, envir): R expects expr as expression; parse_arg on Language returns bare string -> wrap in parse(text=...) so envir is used
    if f_name == "eval" && args.size == 2 && !r_args[0].to_s.start_with?("g2_v", "quote(")
      r_args[0] = "parse(text=#{r_args[0].to_s.inspect})"
    end

    r_expr = "#{f_name}(#{r_args.join(", ")})"
  end
  assignment = "#{var_name} <- #{r_expr}"
  envelope = R.bridge.eval_r_with_result(assignment)
  unless envelope
    reason = R.bridge.respond_to?(:last_envelope_nil_reason) && R.bridge.last_envelope_nil_reason
    raise "Result protocol: no envelope (buffer missing or invalid)#{reason ? " [#{reason}]" : ''}"
  end

  ruby_result_from_envelope(envelope, var_name, r_expr)
end

.exec_function_async(function, *args, unbox: false, timeout: nil, **kwargs, &block) ⇒ Object

Async variant of exec_function; block receives NewBridge::EvalResult (+#value+ is like exec_function return).

Raises:

  • (ArgumentError) 


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# File 'lib/R_interface/rsupport.rb', line 391

def self.exec_function_async(function, *args, unbox: false, timeout: nil, **kwargs, &block)
  raise ArgumentError, 'exec_function_async requires a block' unless block

  f_name = function.respond_to?(:r_interop) ? function.r_interop : function

  if args.empty? && kwargs.empty? && (f_name.include?("::") || f_name.start_with?("g2_v"))
    raise ArgumentError, 'exec_function_async does not support bare handle/namespace reference; use R.eval_r_async'
  end

  var_name = self.generate_var_name
  all_args = kwargs.empty? ? args : args + [kwargs]

  use_subscript_alist =
    kwargs.empty? &&
    f_name == MD_INDEX_BACKTICK &&
    all_args.any? { |a| a.is_a?(::Symbol) && a == :all } &&
    !all_args.any? { |a| a.is_a?(Hash) }

  use_assign_alist =
    !kwargs.empty? &&
    f_name == MD_ASSIGN_BACKTICK &&
    all_args.size == 2 &&
    all_args[1].is_a?(Hash) &&
    all_args[1].values.any? { |v| v.is_a?(::Symbol) && v == :all }

  if use_subscript_alist
    r_expr = build_subscript_do_call_alist(all_args)
  elsif use_assign_alist
    r_expr = build_subscript_assign_do_call_alist(all_args[0], all_args[1])
  else
    r_args = all_args.map { |arg| self.parse_arg(arg) }
    if f_name == "eval" && args.size == 2 && !r_args[0].to_s.start_with?("g2_v", "quote(")
      r_args[0] = "parse(text=#{r_args[0].to_s.inspect})"
    end

    r_expr = "#{f_name}(#{r_args.join(", ")})"
  end
  assignment = "#{var_name} <- #{r_expr}"

  R.bridge.eval_r_with_result_async(assignment, timeout: timeout) do |result|
    if result.ok?
      begin
        env = result.value[:envelope]
        vn = result.value[:var_name]
        rx = result.value[:r_expr]
        obj = ruby_result_from_envelope(env, vn, rx)
        block.call(NewBridge::EvalResult.success(obj))
      rescue StandardError => e
        block.call(NewBridge::EvalResult.failure(e))
      end
    else
      block.call(result)
    end
  end
end

.expression_display_arg(arg) ⇒ Object

String suitable for expression display (to_s). For R::Language use stored expression; for other R::Object use R's deparse() so display reflects the current value (not the creating R code stored in .expression).



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# File 'lib/R_interface/rsupport.rb', line 159

def self.expression_display_arg(arg)
  puts "DEBUG expression_display_arg: arg=#{arg.inspect} class=#{arg.class}" if ENV["GALAAZ_DEBUG"]
  return arg.expression if arg.is_a?(R::Language) && arg.respond_to?(:expression) && arg.expression
  return self.get_deparse_string(arg) if arg.is_a?(R::Object)
  self.parse_arg(arg).to_s
end

.generate_var_name ⇒ Object

Generate a unique R-side variable name (e.g. g2_v1, g2_v2) for assignment results.



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# File 'lib/R_interface/rsupport.rb', line 84

def self.generate_var_name
  @@var_id_mutex.synchronize do
    @@var_id += 1
    "g2_v#{@@var_id}"
  end
end

.get_callback(id) ⇒ Object

Retrieve the Ruby proc registered for a callback id (from --G_CALLBACK--id--...).



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# File 'lib/R_interface/rsupport.rb', line 646

def self.get_callback(id)
  @callbacks[id.to_i]
end

.get_deparse_string(arg) ⇒ Object

R-side deparse of an R::Object to a single string (e.g. "c(1L, 2L, 3L, 4L)"). Relies on R evaluating deparse() correctly on the object.



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# File 'lib/R_interface/rsupport.rb', line 168

def self.get_deparse_string(arg)
  puts "DEBUG get_deparse_string: called for #{arg.r_interop.inspect}" if ENV["GALAAZ_DEBUG"]
  dep = self.exec_function("deparse", arg)
  puts "DEBUG get_deparse_string: deparse result class=#{dep.class} value=#{dep.inspect}" if ENV["GALAAZ_DEBUG"]
  str = self.exec_function("paste0", dep, { collapse: "" })
  return str.to_s if str.is_a?(::String)
  raw = R.bridge.eval_r("paste0(#{str.r_interop}, collapse='')").to_s
  puts "DEBUG get_deparse_string: eval_r paste0 raw=#{raw.inspect}" if ENV["GALAAZ_DEBUG"]
  m = raw.match(/\[1\]\s*"([^"]*)"/)
  result = m ? m[1] : raw.strip
  puts "DEBUG get_deparse_string: returning #{result.inspect}" if ENV["GALAAZ_DEBUG"]
  result
end

.get_ruby_object(id_str) ⇒ Object

Retrieve the Ruby object for a handle "rb_obj_" returned from R.



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# File 'lib/R_interface/rsupport.rb', line 651

def self.get_ruby_object(id_str)
  id = id_str.sub("rb_obj_", "").to_i
  @ruby_objects[id]
end

.md_index ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 51

def self.md_index
  "`[`"
end

.new_scope(symbol, *args, &block) ⇒ Object 



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# File 'lib/R_interface/rsupport_scope.rb', line 69

def self.new_scope(symbol, *args, &block)
  executionScope = Scope.with(symbol, *args)
  scope = executionScope.new
  scope.instance_eval(&block)
  # scope
end

.parse_arg(arg) ⇒ Object

Turn a Ruby value into an R code fragment (string): handles, scalars, hashes -> list(), arrays -> c(), Procs -> R callback stub, etc.



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# File 'lib/R_interface/rsupport.rb', line 183

def self.parse_arg(arg)
  return arg.r_interop if arg.respond_to?(:r_interop) && arg.r_interop
  return arg.expression if arg.respond_to?(:expression) && arg.expression

  case arg
  when Hash
    arg.map do |k, v|
      key = k.to_s.gsub(/__/, ".")
      # R list names with spaces or special chars must be backtick-quoted
      key_r = (key =~ /\A[a-zA-Z._][a-zA-Z0-9._]*\z/) ? key : "`#{key.gsub('`', '\\`')}`"
      "#{key_r} = #{self.parse_arg(v)}"
    end.join(", ")
  when Array
    "c(#{arg.map { |v| self.parse_arg(v) }.join(", ")})"
  when Symbol
    # :all means "all" in that dimension; R uses missing argument. Bridge defines missing_arg().
    return "missing_arg()" if arg == :all
    arg.to_s.gsub(/__/,".")
  when R::SymbolRef
    arg.to_r_symbol
  when String
    # If it's already a handle, don't quote it
    if arg.start_with?("g2_v")
      arg
    else
      "'#{arg.gsub("'", "\\\\'")}'"
    end
  when Numeric
    arg.to_s + (arg.is_a?(Integer) ? "L" : "")
  when TrueClass
    "TRUE"
  when FalseClass
    "FALSE"
  when Range
    final_value = (arg.exclude_end?) ? (arg.last - 1) : arg.last
    "seq(#{arg.first}, #{final_value})"
  when Proc, Method
    if R.bridge.respond_to?(:register_callback_proc_stub)
      return R.bridge.register_callback_proc_stub(arg)
    end

    id = R::Support.register_callback(arg)
    "function(...) {
      args <- list(...)
      handles <- character(0)
      if (length(args) > 0) {
        for (i in 1:length(args)) {
          h <- paste0('g2_v_cb_', i, '_', as.integer(runif(1, 1e8, 9e8)))
          assign(h, args[[i]], envir = .GlobalEnv)
          cls <- paste(class(args[[i]]), collapse=' ')
          handles <- c(handles, paste0(h, ':', cls))
        }
      }
      cat('--G_CALLBACK--#{id}--', paste(handles, collapse='|'), '--\\n', sep='')
      flush.console()
      while(TRUE) {
        res_str <- readLines('/dev/shm/galaaz_callback_fifo', n=1)
        if (length(res_str) < 1L) next
        line <- res_str[1]
        if (startsWith(line, '--G_CMD--')) {
          # Extract sequence number if present (regmatches returns list; use [[1]] for sub)
          seq_match <- regmatches(line, regexpr('--G_CMD--seq=([0-9]+)--', line))
          seq_num <- if (length(seq_match) > 0L && length(seq_match[[1]]) > 0L) sub('--G_CMD--seq=([0-9]+)--', '\\\\1', seq_match[[1]]) else '0'
          # Extract actual command
          cmd_part <- sub('--G_CMD--(seq=[0-9]+--)?', '', line)
          cmd <- trimws(cmd_part)
          # Restore newlines (Ruby sends U+E000 as placeholder so FIFO is one line)
          cmd <- gsub(\"#{TRANSPORT_NL}\", \"\\n\", cmd, fixed=TRUE)
          recv_log <- Sys.getenv('GALAAZ_R_RECEIVED_LOG', '')
          if (nchar(recv_log) > 0L) tryCatch({
            write('---CMD---\\n', file=recv_log, append=TRUE)
            write(cmd, file=recv_log, append=TRUE)
            write('\\n', file=recv_log, append=TRUE)
          }, error=function(e) NULL)
          # Log that we're about to execute a command
          cat('[R_CALLBACK]', 'seq=', seq_num, 'Executing:', substr(cmd, 1, 50), '...\\n', sep='')
          # Wrap entire command handling in tryCatch to ensure --G_CMD_END-- is always sent
          # Use capture.output with explicit print() to ensure output is captured
          tryCatch({
            if (nchar(cmd) > 0L) {
              # Evaluate in .GlobalEnv so g2_v* handles created by Ruby are visible.
              # Without this, eval() uses parent.frame() (chunk/engine env) and
              # object 'g2_vNNN' not found occurs when indexing vectors/matrices.
              result <- capture.output(print(eval(parse(text=cmd), envir = .GlobalEnv)))
              cat(result, sep='\\n')
            }
          }, error=function(e) {
            cat('--G_ERR--', conditionMessage(e), '\\n', sep='')
            tb <- paste(capture.output(traceback()), collapse = '\\\\\\\\n')
            if (nchar(tb) > 0L) cat('--G_TRACE--', tb, '\\n', sep='')
          }, finally={
            # Include sequence number in response for synchronization
            cat('--G_CMD_END--seq=', seq_num, '--\\n', sep='')
            flush.console()
          })
        } else if (startsWith(line, '--G_RET--')) {
          res_handle <- trimws(sub('--G_RET--', '', line))
          res_handle <- gsub(\"#{TRANSPORT_NL}\", \"\\n\", res_handle, fixed=TRUE)
          if (nchar(res_handle) > 0L) return(eval(parse(text=res_handle), envir = .GlobalEnv))
          return(invisible(NULL))
        }
      }
    }"
  when nil
    "NULL"
  else
    handle = self.register_ruby_object(arg)
    "'#{handle}'"
  end
end

.process_missing(symbol, internal, *args) ⇒ Object

Entry point for method_missing: handle setters (x=), eval, or dispatch to R (function / field / method with receiver).



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# File 'lib/R_interface/rsupport.rb', line 452

def self.process_missing(symbol, internal, *args)
  name = self.convert_symbol2r(symbol)
  if ENV['GALAAZ_DEBUG_EVAL'] && name == "expr" && args.size >= 1
    puts "[GALAAZ_DEBUG_EVAL] R.expr(...) called:"
    puts "  args[0].class = #{args[0].class}, args[0].inspect = #{args[0].inspect}"
  end
  return process_missing_setter(name, internal, args) if name =~ /(.*)=$/
  return process_missing_eval(name, internal, args) if name == "eval"
  # R.expr(expression_text): build R expression from string/SymbolExprString via parse(text=...), return R::Object.
  if name == "expr" && args.size == 1
    arg = args[0]
    if arg.is_a?(SymbolExprString) || (arg.is_a?(String) && !arg.start_with?("g2_v"))
      str = arg.to_s
      var_name = self.generate_var_name
      R.bridge.eval_r("#{var_name} <- parse(text=#{str.inspect})[[1]]")
      return R::Object.build(var_name)
    end
  end
  process_missing_dispatch(name, internal, args)
end

.process_missing_dispatch(name, internal, args) ⇒ Object

Dispatch: R module (eval handle/namespace or exec_function) or R::Object (length / function / field / fallback).



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# File 'lib/R_interface/rsupport.rb', line 525

def self.process_missing_dispatch(name, internal, args)
  if internal == R && args.empty? && (name.include?("::") || name.start_with?("g2_v"))
    return R::Object.build(name)
  end

  # Phase 3: R.foo(...) — +internal+ is false/true from R.method_missing, not an R::Object. No per-handle
  # field vs function ambiguity; go straight to function execution.
  unless internal.is_a?(R::Object)
    return self.exec_function(name, *args)
  end

  handle = internal.r_interop
  return self.exec_function("length", internal, *args) if name == "length"

  # Prefer component/field access (obj.beta => obj[["beta"]]) over calling a global function (beta()).
  # Use [[ instead of $ so we avoid "$ operator is invalid for atomic vectors" when receiver is atomic;
  # [[ on list/data.frame/env returns the element; result protocol maps NA/NULL as appropriate.
  begin
    R.bridge.log_connections_in_r if ENV["GALAAZ_DEBUG_R"].to_s == "1" || ENV["GALAAZ_DEBUG_R"].to_s == "true"
    R.bridge.log_object_in_r(handle) if ENV["GALAAZ_DEBUG_R"].to_s == "1" || ENV["GALAAZ_DEBUG_R"].to_s == "true" || ENV["GALAAZ_DEBUG_OBJECT"].to_s == "1" || ENV["GALAAZ_DEBUG_OBJECT"].to_s == "true"
  rescue StandardError => e
    # Debug dump must not block the is_field check (e.g. if R throws "invalid connection" when inspecting the object).
    File.open(R.bridge.log_path("galaaz_obj_debug.log"), "a") { |f| f.puts "[#{Time.now.strftime('%H:%M:%S.%L')}] log_object_in_r(#{handle}) failed: #{e.message}" }
  end
  # In callback, eval_r can fail with "invalid connection" - wrap in begin/rescue
  is_field = false
  is_func = false
  if R.bridge.respond_to?(:dispatch_probe)
    # Environments are mutable (rm, assign); do not cache probe results — stale is_field breaks semantics.
    cache_probe = !internal.is_a?(::R::Environment)
    probe_key = dispatch_probe_cache_key(handle, name)
    cached_probe = nil
    if cache_probe
      @dispatch_probe_cache_mx.synchronize do
        cached_probe = @dispatch_probe_handle_cache[probe_key]
        @dispatch_probe_cache_hits += 1 if cached_probe
      end
    end
    if cached_probe
      is_field = !!cached_probe[:is_field]
      is_func = !!cached_probe[:is_func]
    else
      begin
        probe = R.bridge.dispatch_probe(handle, name)
        is_field = !!probe[:is_field]
        is_func = !!probe[:is_func]
        if cache_probe
          @dispatch_probe_cache_mx.synchronize do
            @dispatch_probe_cache_misses += 1
          end
          store_dispatch_probe_handle_cache(probe_key, is_field, is_func)
        end
        @dispatch_probe_cache[:func][name] = is_func
      rescue StandardError => e
        raise unless e.message.include?("invalid connection") || e.message.include?("invalid dispatch_probe params")
        is_field = false
        is_func = false
      end
    end
  else
    is_field = begin
      R.bridge.eval_r("isTRUE('#{name}' %in% names(#{handle})) || (is.environment(#{handle}) && isTRUE(exists('#{name}', envir = #{handle}, inherits = FALSE)))") == "[1] TRUE"
    rescue RuntimeError => e
      e.message.include?("invalid connection") ? false : raise
    end
    if is_field
      res = self.exec_function_name("`[[`", internal, name)
      return res.call(*args) if !args.empty? && res.respond_to?(:call)
      return res
    end

    is_func = begin
      cached = @dispatch_probe_cache[:func][name]
      if cached.nil?
        cached = (R.bridge.eval_r("is.function(try(get('#{name}'), silent=TRUE))") == "[1] TRUE")
        @dispatch_probe_cache[:func][name] = cached
      end
      cached
    rescue RuntimeError => e
      e.message.include?("invalid connection") ? false : raise
    end
  end
  if is_field
    res = self.exec_function_name("`[[`", internal, name)
    return res.call(*args) if !args.empty? && res.respond_to?(:call)
    return res
  end

  return self.exec_function(name, internal, *args) if is_func

  # Environment: missing name should raise NoMethodError (like Ruby), not call name(env) in R.
  if internal.is_a?(::R::Environment)
    ::Kernel.raise(::NoMethodError, "undefined method `#{name}' for #{internal.inspect}")
  end

  self.exec_function(name, internal, *args)
end

.process_missing_eval(name, internal, args) ⇒ Object

Handle obj.eval(env) or R.eval(code): expression in context, or single-arg R.eval.



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# File 'lib/R_interface/rsupport.rb', line 492

def self.process_missing_eval(name, internal, args)
  if internal.is_a?(R::Object) && name == "eval" && args.empty?
    return self.exec_function("eval", internal)
  end
  if internal.is_a?(R::Object) && args.size >= 1
    expr = self.parse_arg(internal)
    env = self.parse_arg(args[0])
    unless expr.start_with?("g2_v") || expr.start_with?("quote(")
      puts "DEBUG: Quoting expression: #{expr}" if ENV['GALAAZ_DEBUG']
      expr = "quote(#{expr})"
    end
    var_name = self.generate_var_name
    r_code = "#{var_name} <- eval(#{expr}, #{env})"
    if ENV['GALAAZ_DEBUG_EVAL']
      puts "[GALAAZ_DEBUG_EVAL] expr.eval(env) path:"
      puts "  internal.class = #{internal.class}"
      puts "  internal.r_interop = #{internal.r_interop.inspect}" if internal.respond_to?(:r_interop)
      puts "  internal.expression = #{internal.expression.inspect}" if internal.respond_to?(:expression)
      puts "  parse_arg(internal) => expr = #{expr.inspect}"
      puts "  parse_arg(args[0]) => env = #{env.inspect}"
      puts "  R code sent: #{r_code}"
    end
    R.bridge.eval_r(r_code)
    return R::Object.build(var_name)
  end
  if args.size == 1
    expr_arg = args[0].is_a?(SymbolExprString) ? args[0].to_s : args[0]
    return self.eval(expr_arg)
  end
  self.exec_function(name, *args)
end

.process_missing_setter(name, internal, args) ⇒ Object

Handle obj.var = rhs or R.var = rhs: use var<- or $<- on R::Object, else .GlobalEnv assignment.



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# File 'lib/R_interface/rsupport.rb', line 474

def self.process_missing_setter(name, internal, args)
  var = name[/^(.*)=$/, 1]
  rhs = self.parse_arg(args[0])
  if internal.is_a?(R::Object)
    handle = internal.r_interop
    r_var = (var == "rclass") ? "class" : var
    R.bridge.eval_r(<<~RCODE)
      #{handle} <- tryCatch(
        `#{r_var}<-`(#{handle}, #{rhs}),
        error = function(e) `$<-`(#{handle}, '#{var}', #{rhs})
      )
    RCODE
  else
    R.bridge.eval_r(".GlobalEnv$#{var} <- #{rhs}")
  end
end

.range ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 63

def self.range
  "range_helper"
end

.register_callback(proc) ⇒ Object

Register a Proc/Method to be invoked from R (e.g. in outer()); returns callback id for the R stub.



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# File 'lib/R_interface/rsupport.rb', line 638

def self.register_callback(proc)
  @ruby_obj_id += 1
  id = @ruby_obj_id
  @callbacks[id] = proc
  id
end

.register_ruby_object(obj) ⇒ Object

Store a Ruby object for passing to R; returns handle string "rb_obj_" for use in R.



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# File 'lib/R_interface/rsupport.rb', line 630

def self.register_ruby_object(obj)
  @ruby_object_id += 1
  id = @ruby_object_id
  @ruby_objects[id] = obj
  "rb_obj_#{id}"
end

.reset_dispatch_probe_cache_stats! ⇒ Object 



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# File 'lib/R_interface/rsupport.rb', line 46

def self.reset_dispatch_probe_cache_stats!
  @dispatch_probe_cache_mx&.synchronize do
    @dispatch_probe_cache_hits = 0
    @dispatch_probe_cache_misses = 0
  end
end

.ruby_callback_method ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 55

def self.ruby_callback_method
  "ruby_callback_method"
end

.ruby_result_from_envelope(envelope, var_name, r_expr) ⇒ Object

Build the same Ruby value as exec_function from a legacy envelope (+:handle+, scalars, rb_obj_*).



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# File 'lib/R_interface/rsupport.rb', line 371

def self.ruby_result_from_envelope(envelope, var_name, r_expr)
  case envelope[:type]
  when :scalar_double, :scalar_integer, :scalar_logical, :scalar_character
    val = envelope[:value]
    if envelope[:type] == :scalar_character && val.is_a?(String) && val =~ /^rb_obj_\d+$/
      return get_ruby_object(val)
    end
    r_class = { scalar_double: "numeric", scalar_integer: "integer", scalar_logical: "logical", scalar_character: "character" }[envelope[:type]]
    return R::Object.build(var_name, r_expr, r_class: r_class)
  when :scalar_symbol
    sym_name = envelope[:value].to_s
    return sym_name.gsub("::", "___").gsub(".", "__").to_sym
  when :handle
    return R::Object.build(envelope[:handle], r_expr, r_class: envelope[:r_class], wrapper_tag: envelope[:wrapper_tag])
  else
    raise "Result protocol: unknown envelope type #{envelope[:type].inspect}"
  end
end

.start_capture ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 39

def self.start_capture
  "start_capture"
end

.stop_capture ⇒ Object 



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# File 'lib/R_interface/r_methods.rb', line 43

def self.stop_capture
  "stop_capture"
end

.store_dispatch_probe_handle_cache(key, is_field, is_func) ⇒ Object 



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# File 'lib/R_interface/rsupport.rb', line 68

def self.store_dispatch_probe_handle_cache(key, is_field, is_func)
  @dispatch_probe_cache_mx.synchronize do
    if @dispatch_probe_handle_cache.key?(key)
      @dispatch_probe_handle_cache[key] = { is_field: is_field, is_func: is_func }
      return
    end
    while @dispatch_probe_handle_cache.size >= DISPATCH_PROBE_CACHE_MAX && !@dispatch_probe_handle_fifo.empty?
      oldest = @dispatch_probe_handle_fifo.shift
      @dispatch_probe_handle_cache.delete(oldest) if oldest
    end
    @dispatch_probe_handle_cache[key] = { is_field: is_field, is_func: is_func }
    @dispatch_probe_handle_fifo << key
  end
end