Class: AmberVM::Interpreter::CoreCall

Inherits:
Element show all
Defined in:
lib/amber/interpreter.rb

Overview

A core call is a call to the direct core functions and libraries AmberVM proides. this is used to write core libraries for different languages.

Direct Known Subclasses

SimpleCoreCall

Instance Attribute Summary collapse

Attributes inherited from Element

#pos

Instance Method Summary collapse

Constructor Details

#initialize(function, arguments, pos = nil) ⇒ CoreCall

The constructor. function can either be a block object or a function class.

Arguments is a list of the arguments to the function.



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# File 'lib/amber/interpreter.rb', line 1295

def initialize function,  arguments, pos = nil
  super(pos)
  @function = function
  @arguments = arguments
end

Instance Attribute Details

#arguments ⇒ Object (readonly)

Returns the value of attribute arguments.



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# File 'lib/amber/interpreter.rb', line 1289

def arguments
  @arguments
end

#function ⇒ Object (readonly)

Returns the value of attribute function.



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# File 'lib/amber/interpreter.rb', line 1290

def function
  @function
end

Instance Method Details

#data_type ⇒ Object 



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# File 'lib/amber/interpreter.rb', line 1341

def data_type
  AmberVM::Functions[@function] ? AmberVM::Functions[@function].data_type : :any
end

#execute(env) ⇒ Object

When executed the CoreCall it will call one of the AmberVM’s library functions



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# File 'lib/amber/interpreter.rb', line 1346

def execute env
  AmberVM::debug "Executing CoreCall... args: #{@arguments.inspect}" if $DEBUG
  args = nil
  # The function is a anonymous function
 
  # Get the function from he globals
  if not fun = AmberVM::Functions[@function]
    raise RuntimeError.new("Function Not found!", @pos[0], @pos[1], @pos[2])
  end
  # Test if the arguments should be executed
  if fun.execargs
    # The arges get executed
    args = @arguments.map do |arg|
      a = arg.execute env
    end
  else
    args = @arguments
  end
  args.map! do |a|
    a = a.is_a?(AmberVM::Interpreter::VariableStorage) ? a.val : a
    a
  end
  # Call the function
  begin
    f = fun.call(args, env,  @pos)
    f
  rescue Exception => e
    raise e
    raise RuntimeError.new("Function failed to execute: #{e}", @pos[0], @pos[1], @pos[2])
  end
end

#optimize(variables = {}) ⇒ Object 



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# File 'lib/amber/interpreter.rb', line 1332

def optimize variables = {}
  arguments = @arguments.map!{ |a| a.optimize variables}
  if fun = AmberVM::Functions[@function]
    AmberVM::Interpreter::SimpleCoreCall.new(fun, arguments, @pos)
  else 
    CoreCall.new(@function, arguments, @pos)
  end
end

#pretty_print(q) ⇒ Object 



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# File 'lib/amber/interpreter.rb', line 1301

def pretty_print(q)
  binary = {:sub => '-', :add => '+', :mul => '*', :div => '/', :mod => '%', :shl => '<<', :shr => '>>',
            :cmp => '<=>', :eq => '==', :gt => '>', :gte => '>=', :lt => '<', :lte => '<=',
            :bitwise_and => '&', :bitwise_or => '|', :bitwise_xor => '^',
            :and => '&&', :or => '||', }
  if binary.keys.include?(@function)
    first = true
    @arguments.each do |a|
      if first
        first = false
      else
        q.text " #{binary[@function]} "
      end
      q.pp a
    end
  else
    first = true
    q.pp @function
    q.text "!("
    @arguments.each do |a|
      if first
        first = false
      else
        q.text ', '
      end
      q.pp a
    end
    q.text ")"
  end
end