WPSM Programming Language

1
WPSM Programming Language

• A simple language that transform
• simple data structure
• into
• complex xML format

Wai Y. Wong Peter Chen Seema Gupta Miqdad Mohammed
2
Background

• Business to Business data transformation
• Extensible Markup Language
• Database schema mapping
• Extensible Stylesheet Language

How does Content Manager handle this?
3
Motivation

• Worry free from XML syntax
• Focusing on dealing with the inventory
• A powerful tool to handle a mass data
• An easy tool to learn

How does WPSM fulfill these objectives?
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WPSM Goals

• Ease of use
• Productivity
• Robust
• Portable
• Internet ability

5
WPSM Syntax

• WPSM takes in .xf source, .csv or other
  delimited, and outputs .xml
• Source file read as stream of chars by Lexer and
  converted to stream of tokens
• Stream of tokens read by Parser and converted to
  AST (Syntax checks)
• Structure of AST in grammar (i.e root nodes and
  child nodes)
• Token Types Keyword, Variable, Integer, and
  String (i.e. BEGIN, END, PRINT(value), IF,
  WHILE, 1, string, 9, FS, RT, var)
• Lexer and Parser errors

6
WPSM Semantics

• Back-End intermediate between Front-End and
  Library
• TreeWalker performs semantic checks
• Two walks of the AST
• Symbol Table
• Code Generation using Library and Helper
• Semantic Errors (Run-Time and Compile Time)

7
WPSM Compiler

• .xf (WPSM source program)
• Whole WPSM Compiler is implemented in Java
• Parser, Lexer, and Tree-walker are generated by
  ANTLR
• Target language gt Java source code

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WPSM Compiler
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WPSM Library

• Simplify WPSM Code Generation
• Simplify WPSM Syntax
• Allows for Reusability of methods
• Reduces output code
• Makes Upgrades Easier
• Breaks up Compiler and WPSM Features to allow for
  easier debugging

10
WPSM System
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WPSM Testing

• Source File Testing
• Syntax Testing
• Dependency Checking
• Feature Testing
• Release Control

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WPSM Example Data ? XML
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WPSM Example - .xf File
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Conclusion

• Great team work
• TAs and professors support
• Struggles
• Short time VS perfection
• Questions, Comments, or Suggestions
• Thanks