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# frozen_string_literal: true
# CSV Decision: CSV based Ruby decision tables.
# Created December 2017.
# @author Brett Vickers.
# See LICENSE and README.md for details.
module CSVDecision
# Parse the default row beneath the header row if present
# @api private
module Defaults
# Parse the defaults row that (optionally) appears just after the header row.
# We have already determined that this row must be present.
# @param columns [{Integer=>Dictionary::Entry}] Hash of header columns with defaults.
# @param matchers [Array<Matchers>] Output cell special matchers.
# @param row [Array<String>] Defaults row that appears just after the header row.
# @raise [TableValidationError] Missing defaults row.
def self.parse(columns:, matchers:, row:)
raise TableValidationError, 'Missing defaults row' if row.nil?
defaults = columns.defaults
# Scan the default row for procs and constants
scan_row = ScanRow.new.scan_columns(row: row, columns: defaults, matchers: matchers)
parse_columns(defaults: defaults, columns: columns.dictionary, row: scan_row)
end
def self.parse_columns(defaults:, columns:, row:)
defaults.each_pair do |col, entry|
parse_cell(cell: row[col], columns: columns, entry: entry)
end
defaults
end
private_class_method :parse_columns
def self.parse_cell(cell:, columns:, entry:)
return entry.function = cell unless cell.is_a?(Matchers::Proc)
entry.function = cell.function
# Add any referenced input column symbols to the column name dictionary
Columns.ins_cell_dictionary(columns: columns, cell: cell)
end
private_class_method :parse_cell
end
end
Version data entries
8 entries across 8 versions & 2 rubygems