PEG parser generator for VB6
VbPeg is a simple parser generator for VB6 that can be used to build interpreters, compilers and other tools that need to match and process complex input data.
VbPeg generates recursive-descent parsers from Parsing Expression Grammars (PEG) [Ford 2004] and is currently based on the original Ford syntax with some additions for 'semantic actions' as implemented by Ian Piumarta's peg/leg project.
VbPeg is self-hosted, meaning it can produce it's own parser in src\cParser.cls from the grammar in VbPeg.peg in root.
- Generate a private VB6 class from PEG grammar in VbPeg.peg
c:> VbPeg.exe VbPeg.peg -o src\cParser
Usage: VbPeg.exe [options] <in_file.peg>
Options:
-o OUTFILE write result to OUTFILE [default: stdout]
-tree output parse tree
-ir output intermediate represetation
-set NAME=VALUE set or modify grammar settings
-q in quiet operation outputs only errors
-nologo suppress startup banner
-allrules output all rules (don't skip unused)
-trace trace in_file.peg parsing as performed by %1.exe
If no -tree/-ir is used emits VB6 code. If no -o is used writes result to console.