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Grammars

ANTLR4 grammars for PowerBuilder, DataWindow, MySql, and PostgreSQL grammars

PowerBuilder grammars

There are two versions of PB: (1) general and (2) grammar that supports comments extraction.

To generate parser and lexer for PB no support for comment run: gradle generatePb

To generate parser and lexer for PB that supports comment run: gradle generatePbWithComment

To test all run: gradle testPb

To test all run: gradle testPbWithComments

Change History

  • Add a grammar that parse comments
  • Fixed the ambiguous HEADER. Put it into the hidden channel
  • Fixed the function call statement that should accept argument types (string literal, primitive data types)
  • Simplify the grammar. Boolean expression is a expression, not the other way around like the implemetation of the version 3 and the ported version. The generated parse tree should be shorter and clean.
  • Add different types of function calls
  • Add more test files to unit test
  • Add support for embedded SQL
  • Add try-catch
  • Add comments

DataWindow

To generate parser and lexer run: gradle generatePostgres

Tested against 120 DataWindow files.

Test files are from this project

MySql

To generate parser and lexer run: gradle generateMySql

To test all run: gradle testMySql

#Change history

  • Support mix case. No need to use ChangeCase any more
  • Add BIND_VAR to handle plSql :<variable_name>
  • Test against more 100 Sql files
  • Resolve the expression issue with minus minus condition #1525 (antlr/grammars-v4#1525)

PostgreSQL

To generate parser and lexer run: gradle generatePostgres

To test all run: gradle testPostgres

Change history

  • A modified version from the ANTLR4 repo, which should be language agnostic
  • Replace all recursive rules with iterative rules (list: list item => item+) => reduce the parsetree size
  • Replace or epsilon rules with optional => remove all the empty node on the parse tree
  • Add a base class for the Lexer per kaby76