Parse DOE2 model and draw refrigeration systems diagram

Works like this:

• Read in a clean INP file (clean = as saved by eQUEST, no comments or BDL directives)
• Use simple regexp patterns to break up the commands and keywords
• Write the commands and keywords into a SQLite database.
• Use specialized routine to re-parse complex commands like Schedule and clean up quotes.
• Query the database for a digraph of connected nodes.
• Draw the digraph using Graphviz. Can output to SVG, PDF, etc.

Support tool:

Use existing models to guess at allowable references between model nodes. A keyword that accepts a reference to another model node may expect a certain type of node, depending on the component and type. There is a workbook to help with this.

Features

• Schedules: limited
• Keyword expressions: no
• "Real" parser e.g. with flex and bison: no