Class: RBlade::CompilesStatements::CompilesLoops

Inherits:
Object
  • Object
show all
Defined in:
lib/rblade/compiler/statements/compiles_loops.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CompilesLoops

Returns a new instance of CompilesLoops.



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 6

def initialize
  @loop_else_counter = 0
end

Instance Method Details

#compile_break(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 10

def compile_break(args)
  if args&.count&.> 1
    raise RBladeTemplateError.new "Break statement: wrong number of arguments (given #{args.count}, expecting 0 or 1)"
  end

  if args.nil?
    "break;"
  else
    "if #{args[0]};break;end;"
  end
end

#compile_each(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 22

def compile_each(args)
  if args.nil? || args.count > 2
    raise RBladeTemplateError.new "Each statement: wrong number of arguments (given #{args&.count || 0}, expecting 1 or 2)"
  end
  last_arg, collection = args.pop.split(" in ")
  args.push(last_arg)

  if collection.nil?
    raise RBladeTemplateError.new "Each statement: collection not found (expecting 'in')"
  end

  "#{collection}.each do |#{args.join(",")}|;"
end

#compile_each_else(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 56

def compile_each_else(args)
  if args.nil? || args.count > 2
    raise RBladeTemplateError.new "Each else statement: wrong number of arguments (given #{args&.count || 0}, expecting 1)"
  end
  last_arg, collection = args.pop.split(" in ")
  args.push(last_arg)

  if collection.nil?
    raise RBladeTemplateError.new "Each else statement: collection not found (expecting 'in')"
  end

  @loop_else_counter += 1

  "_looped_#{@loop_else_counter}=false;#{collection}.each do |#{args.join(",")}|;_looped_#{@loop_else_counter}=true;"
end

#compile_each_with_index(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 36

def compile_each_with_index(args)
  if args.nil? || args.count > 3
    raise RBladeTemplateError.new "Each with index statement: wrong number of arguments (given #{args&.count || 0}, expecting 1 to 3)"
  end
  last_arg, collection = args.pop.split(" in ")
  args.push(last_arg)

  if collection.nil?
    raise RBladeTemplateError.new "Each with index statement: collection not found (expecting 'in')"
  end

  # Special case for 3 arguments: the first 2 arguments are the key/value pair in a Hash, and
  # the third is the index
  if args.count == 3
    "#{collection}.each_with_index do |_ivar,#{args[2]}|;#{args[0]},#{args[1]}=_ivar;"
  else
    "#{collection}.each_with_index do |#{args.join(",")}|;"
  end
end

#compile_each_with_index_else(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 72

def compile_each_with_index_else(args)
  if args.nil? || args.count > 3
    raise RBladeTemplateError.new "Each with index statement: wrong number of arguments (given #{args&.count || 0}, expecting 1 to 3)"
  end
  last_arg, collection = args.pop.split(" in ")
  args.push(last_arg)

  if collection.nil?
    raise RBladeTemplateError.new "Each with index statement: collection not found (expecting 'in')"
  end

  @loop_else_counter += 1

  # Special case for 3 arguments: the first 2 arguments are the key/value pair in a Hash, and
  # the third is the index
  if args.count == 3
    "_looped_#{@loop_else_counter}=false;#{collection}.each_with_index do |_ivar,#{args[2]}|;#{args[0]},#{args[1]}=_ivar;_looped_#{@loop_else_counter}=true;"
  else
    "_looped_#{@loop_else_counter}=false;#{collection}.each_with_index do |#{args.join(",")}|;_looped_#{@loop_else_counter}=true;"
  end
end

#compile_empty(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 111

def compile_empty(args)
  unless args.nil?
    raise RBladeTemplateError.new "Empty statement: wrong number of arguments (given #{args.count}, expecting 0)"
  end

  @loop_else_counter -= 1

  "end;if !_looped_#{@loop_else_counter + 1};"
end

#compile_for(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 94

def compile_for(args)
  if args&.count != 1
    raise RBladeTemplateError.new "For statement: wrong number of arguments (given #{args&.count || 0}, expecting 1)"
  end

  "for #{args[0]};"
end

#compile_for_else(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 102

def compile_for_else(args)
  if args&.count != 1
    raise RBladeTemplateError.new "For else statement: wrong number of arguments (given #{args&.count || 0}, expecting 1)"
  end
  @loop_else_counter += 1

  "_looped_#{@loop_else_counter}=false;for #{args[0]};_looped_#{@loop_else_counter}=true;"
end

#compile_next(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 121

def compile_next(args)
  if args&.count&.> 1
    raise RBladeTemplateError.new "Next statement: wrong number of arguments (given #{args.count}, expecting 0 or 1)"
  end

  if args.nil?
    "next;"
  else
    "if #{args[0]};next;end;"
  end
end

#compile_until(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 133

def compile_until(args)
  if args&.count != 1
    raise RBladeTemplateError.new "Until statement: wrong number of arguments (given #{args&.count || 0}, expecting 1)"
  end

  "until #{args[0]};"
end

#compile_while(args) ⇒ Object 



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# File 'lib/rblade/compiler/statements/compiles_loops.rb', line 141

def compile_while(args)
  if args&.count != 1
    raise RBladeTemplateError.new "While statement: wrong number of arguments (given #{args&.count || 0}, expecting 1)"
  end

  "while #{args[0]};"
end