Team Suds

1
Team Suds

• Michelle Feng Architect
• Mohamed ElTahan System Integrator
• Ji Fang Tools Guru
• McClain Braswell Tester
• Joseph Kaptur Project Manager

2
The Session Data Type
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call_my_hubby.suds

• PARTY grandmother on PHONE is 212123098
• PARTY grandfather on PHONE is 3038761234
• CONVERSATION con
• ADD grandmother TO con
• ADD grandfather TO con

4
Suds in a nutshell

• Three sections in Suds program
• Initialization
• Commands are executed one by one
• In-call function
• Define what program should do when user type
  specific words in command line
• Event handler
• The function is activated when an associated
  condition becomes true

5
Suds programs have aflexible structure
Initialization
In-Call Functions
Event Handlers

• Basic Sections
  Actual Suds File

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Suds in a nutshell

• Suds programs compile to Java
• Every Suds program has two phases to its
  execution
• Execute command in Initialization one by one
• Catch events or words to activate relative
  functions

7
A problem that Suds can solve
There is a professional telecommunication
language, Suds. I can use it to set a family
conference call for us.
You cannot invite anyone to our family conference
when Dad and I are not in the call.
Mom, my friend Joe would like to join our family
teleconference when you and dad are cooking.
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Initialization
First part of parental_control.suds

• PARTY mom ON PHONE IS 3136701801
• GROUP parents OF PARTY
• mom,
• PARTY dad ON PHONE IS 2143281283
• END GROUP
• PARTY son ON PHONE IS 6540923472
• CONVERSATION convo
• ADD son TO convo

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Second part of parental_control.suds
In-Call Function

• WHEN addalan DO
• IF convo HAS ANY parents THEN
• PARTY alan ON PHONE IS 4329874328
• ADD alan TO convo
• ELSE
• PRINT Parents not on the phone
• END IF
• END WHEN

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Third part of parental_control.suds
Event Handler

• WHEN convo DOES DROP person DO
• IF NOT convo HAS ANY parents THEN
• FOREACH person IN convo
• IF NOT person IS son THEN
• DROP person FROM convo
• END IF
• END FOREACH
• END IF
• END WHEN

11
What's underthe hood?
- Suds
- Sudsc
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call_my_hubby Vs phones_part
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sudsc
JFlex
CUP

• Why a parse tree? (The declare conflict)?
• Scope and the multiple Symbol Tables
• Type checking (Declare Group, Convos)?

14
Demo

• Does anyone in the room have a cell phone?