Module: RVM::Interpreter

Included in:
Languages::Math::Compiler
Defined in:
lib/rvm/interpreter.rb,
lib/rvm/environment.rb,
lib/rvm/optimisation.rb

Overview

This Module hold all the VM classes that are used to execute and evaluate code for the VM, so it is quite important to read and understand if you feel like making a own compiler.

For someone not interested in going as deep into building a own compiler it still is a good start for understanding how rVM works, yet it is not mandatory to read.

The basic idea of this objects is that the compiler translates the source code into a tree of RVM::Interpreter objects to build the behavior that is expected. Once that is done the code can be executed by calling #execute for the root of the object tree.

Defined Under Namespace

Classes: Assignment, Block, Condition, Constant, CoreCall, Declaration, Element, Environment, FunctionCall, FunctionDefinition, Loop, ObjectContext, Parameter, Return, ReturnException, RuntimeError, Sequence, SetClassFunction, SimpleAssignment, SimpleDeclaration, SimpleVariable, Variable, VariableStorage, VariableStorageCallback

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.const(type, value, pos = nil) ⇒ Object

This is a helper function that generates a constat of a simple constant, for example if you’ve a lot of string constants it is way quickly to call this then writing it out the whole time.



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# File 'lib/rvm/interpreter.rb', line 82

def Interpreter.const type, value, pos = nil
  RVM::Interpreter::Constant.new(RVM::Classes[type].new(value), pos)
end

.env(aenv = {}) ⇒ Object

This is a helper fuctio to quickly generate a empty enviorment. A hash can be passed to store variables.

:locals can be a hash holding local variables :functions can be a hash to hold functions defined in the the scope



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# File 'lib/rvm/interpreter.rb', line 74

def Interpreter.env aenv = {}
  RVM::debug "Interpreter.env" if $DEBUG
  Environment.new aenv
end

Instance Method Details

#optimize ⇒ Object

Optimization of the loop



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# File 'lib/rvm/interpreter.rb', line 307

def optimize
  @condition = @condition.optimize
  @body = @body.optimize
  super
end