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Contents
module ExecJS
# Abstract base class for runtimes
class Runtime
class Context
def initialize(runtime, source = "", options = {})
end
# Evaluates the +source+ in the context of a function body and returns the
# returned value.
#
# context.exec("return 1") # => 1
# context.exec("1") # => nil (nothing was returned)
def exec(source, options = {})
raise NotImplementedError
end
# Evaluates the +source+ as an expression and returns the result.
#
# context.eval("1") # => 1
# context.eval("return 1") # => Raises SyntaxError
def eval(source, options = {})
raise NotImplementedError
end
# Evaluates +source+ as an expression (which should be of type
# +function+), and calls the function with the given arguments.
# The function will be evaluated with the global object as +this+.
#
# context.call("function(a, b) { return a + b }", 1, 1) # => 2
# context.call("CoffeeScript.compile", "1 + 1")
def call(source, *args)
raise NotImplementedError
end
end
def name
raise NotImplementedError
end
def context_class
self.class::Context
end
def exec(source, options = {})
context = compile("", options)
if context.method(:exec).arity == 1
context.exec(source)
else
context.exec(source, options)
end
end
def eval(source, options = {})
context = compile("", options)
if context.method(:eval).arity == 1
context.eval(source)
else
context.eval(source, options)
end
end
def compile(source, options = {})
if context_class.instance_method(:initialize).arity == 2
context_class.new(self, source)
else
context_class.new(self, source, options)
end
end
def deprecated?
false
end
def available?
raise NotImplementedError
end
end
end
Version data entries
7 entries across 6 versions & 4 rubygems