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Diffstat (limited to 'CHANGES')
| -rw-r--r-- | CHANGES | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -50,6 +50,28 @@ help from Devin J. Pohly in structuring the code to enable this peaceful transit of single-line or multiline quoted strings defined in Python. (Inspired by discussion with Andreas Schörgenhumer in Issue #421.) +- Added new class method `ParserElement.using_each`, to simplify code + that creates a sequence of `Literals`, `Keywords`, or other `ParserElement` + subclasses. + + For instance, to define suppressable punctuation, one would previously + write: + + LPAR, RPAR, LBRACE, RBRACE, SEMI = map(Suppress, "(){};") + + You can now write: + + LPAR, RPAR, LBRACE, RBRACE, SEMI = Suppress.using_each("(){};") + + `using_each` will also accept optional keyword args, which it will + pass through to the class initializer. Here is an expression for + single-letter variable names that might be used in an algebraic + expression: + + algebra_var = MatchFirst( + Char.using_each(string.ascii_lowercase, as_keyword=True) + ) + - Added bool `embed` argument to `ParserElement.create_diagram()`. When passed as True, the resulting diagram will omit the `<DOCTYPE>`, `<HEAD>`, and `<BODY>` tags so that it can be embedded in other |