Class: CloudRailSi::ServiceCode::Interpreter

Inherits:
Object
  • Object
show all
Defined in:
lib/cloudrail_si/servicecode/Interpreter.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sandbox) ⇒ Interpreter

Returns a new instance of Interpreter.



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 52

def initialize(sandbox)
    @sandbox = sandbox

    @COMMAND_LIST = [
        CallFunc.new,
        Break.new,
        Clone.new,
        Create.new,
        Delete.new,
        Get.new,
        JumpRel.new,
        Pull.new,
        Push.new,
        Return.new,
        Set.new,
        Size.new,
        Uint8ToBase64.new,
        Sha1.new,
        Md5.new,
        Base64Encode.new,
        StreamToString.new,
        StringToStream.new,
        MakeJoinedStream.new,
        MakeLimitedStream.new,
        RequestCall.new,
        Out.new,
        AwaitCodeRedirect.new,
        GetMimeType.new,
        Conditional.new('if==than', lambda { |c| (c == 0) }, false),
        Conditional.new('if>=than', lambda { |c| (c >= 0) }, true),
        Conditional.new('if>than', lambda { |c| (c > 0) }, true),
        Conditional.new('if<=than', lambda { |c| (c <= 0) }, true),
        Conditional.new('if<than', lambda { |c| (c < 0) }, true),
        Conditional.new('if!=than', lambda { |c| (c != 0) }, false),
        ThrowError.new,
        Parse.new,
        Stringify.new,
        MathCombine.new('math.add', lambda { |elems| elems.reduce(0, :+) }),
        MathCombine.new('math.multiply', lambda { |elems| elems.reduce(1, :*) }),
        MathCombine.new('math.max', lambda { |elems | elems.max }),
        MathCombine.new('math.min', lambda{ |elems | elems | elems.min }),
        Floor.new,
        GetKeyArray.new,
        GetKeyValueArrays.new,
        Concat.new,
        Format.new,
        IndexOf.new,
        LastIndexOf.new,
        Split.new,
        Substr.new,
        Substring.new,
        StringTransform.new('string.lowerCase', lambda { |str| str.downcase }),
        StringTransform.new('string.upperCase', lambda { |str| str.upcase }),
        StringTransform.new('string.urlEncode', lambda { |str| URI::encode_www_form_component(str) }),
        StringTransform.new('string.urlDecode', lambda { |str| URI::decode_www_form_component(str, Encoding::UTF_8) })
    ]
    @COMMANDS = {}
    @COMMAND_LIST.each { |command|
        @COMMANDS[command.get_identifier()] = command
    }
end

Instance Attribute Details

#sandbox ⇒ Object (readonly)

Returns the value of attribute sandbox.



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 50

def sandbox
  @sandbox
end

Class Method Details

.decode_command_parameters(command) ⇒ Object 



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 163

def self.decode_command_parameters(command)
    command_parameters = command.clone[1..-1] # first param was function name
    (0..command_parameters.length).each do |i|
        if (Helper.is_string(command_parameters[i]))
            if (command_parameters[i].index('$') === 0)
                command_parameters[i] = VarAddress.new(command_parameters[i][1..-1])
            elsif (command_parameters[i].index('\\$') === 0)
                command_parameters[i] = command_parameters[i][1..-1]
            end
        end
    end
    return command_parameters
end

Instance Method Details

#call_function(function_name, *parameters) ⇒ Object 



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 114

def call_function(function_name, *parameters)
    @sandbox.create_new_stack_level(function_name, 0)
    Helper.add_all(@sandbox.current_parameters(), parameters)
    if (@sandbox.current_function_code().nil?)
        error_message = "Service code error: function #{function_name} not found"
        raise Errors::InternalError.new(error_message)
    end
    return run_sync() # this was an async run
end

#call_function_sync(function_name, *parameters) ⇒ Object 



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 124

def call_function_sync(function_name, *parameters)
    @sandbox.create_new_stack_level(function_name, 0)
    Helper.add_all(@sandbox.current_parameters(), parameters)
    if (@sandbox.current_function_code().nil?)
        error_message = "Service code error: function #{function_name} not found"
        raise Errors::InternalError.new(error_message)
    end
    return run_sync()
end

#get_parameter(idx) ⇒ Object 



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 177

def get_parameter(idx)
    @sandbox.get_parameter(idx, 0)
end

#load_as_string(saved_state) ⇒ Object 



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 185

def load_as_string(saved_state)
    @sandbox.persistent_storage = JSON.parse(saved_state)
end

#resume_function(function_name, *parameters) ⇒ Object 



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 189

def resume_function(function_name, *parameters)
    if (@sandbox.parameters_stack.length === 0)
        first_parameters = []
        @sandbox.parameters_stack.push(first_parameters)
    else
        first_parameters = @sandbox.parameters_stack[0]
    end
    (0..parameters.length).each do |i|
        if (Helper.is_object(parameters[i]))
            m = parameters[i]
            Helper.clear(m)
            Helper.put_all(m, first_parameters[i])
        else
            if (i >= first_parameters.length)
                first_parameters.push(parameters[i])
            else
                first_parameters[i] = parameters[i]
            end
        end
    end
    return run_sync()
end

#run ⇒ Object

Raises:



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 134

def run
    raise Errors::InternalError.new('interpreter.run not supported.')
end

#run_sync ⇒ Object 



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 138

def run_sync
    begin
        while (@sandbox.current_service_code_line() < @sandbox.current_function_code().length && @sandbox.current_service_code_line() >= 0)
            command = @sandbox.current_function_code()[@sandbox.current_service_code_line()]
            Helper.log "\n\n\n#{command}"
            if (@COMMANDS[command[0]].nil?)
                raise Errors::InternalError.new("Unknown command: #{command[0]}")
            end
            command_parameters = Interpreter.decode_command_parameters(command)
            @COMMANDS[command[0]].execute(@sandbox, command_parameters)
            return if !@sandbox.thrown_error.nil?
            @sandbox.increment_current_service_code_line(1)
            while ((@sandbox.current_service_code_line() >= @sandbox.current_function_code().length ||
                @sandbox.current_service_code_line() < 0) && @sandbox.code_function_name_stack.length > 1)
                @sandbox.return_from_function()
            end
        end

    rescue => e
        raise e if (e.class.name == CloudRailSi::Errors::UserError)
        error_message = 'Service code error in function ' + @sandbox.current_function_name() + ' at line ' + @sandbox.current_service_code_line().to_s + ' with message: ' + e.message
        raise CloudRailSi::Errors::InternalError.new(error_message)
    end
end

#save_as_string ⇒ Object 



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# File 'lib/cloudrail_si/servicecode/Interpreter.rb', line 181

def save_as_string
    @sandbox.peristent_storage.to_json
end