eps.git - A parser generator written for Emacs

Age	Commit message (Collapse)	Author
2022-02-08	fix errorsHEAD master	JSDurand
	There are multiple subtle errors in the previous version, both in the codes and in the description of the BNF format. This version should fix some problems now. This version can successfully parse the grammar of its own grammar format, which is quite nice. See test/check_reader.c for parsing this format.
2022-02-05	predicates start working now	JSDurand
	Now we have a working implementation of predicates. It now only remains to write the parser of grammars. Of course we shall generate this parser by this parser generator itself, because why not. ;-P
2022-02-05	replace some hash table usage by tuples	JSDurand
	Previously I used hash tables, which consume too much memory. Now the critical parts are replaced by a new hand-written library called "tuple.h". Now we can easily parse larger inputs. I haven't tested its limits, though.
2022-02-01	need to stop abusing hash tables	JSDurand
	Hash tables take too much space! If I use hash tables, the length of the input will be severely limited, to an unacceptable extent. So we have to use arrays instead.
2022-01-31	cnp: save point	JSDurand
	Now we need to implement predicates, in order to have practical applications.
2022-01-31	test/check_cnp: working algorithm	JSDurand
	I now have a working algorithm in test/check_cnp. It can correctly parse the grammar for an esoteric language called "Brainfuck". This language does not matter. What matters is that it contains parentheses. So this shows that at least for grammars as complex as parentheses, this parser works well. Haha.
2022-01-28	BSR	JSDurand
	A prototype of BSR is roughly finished.
2022-01-21	temporary save point	JSDurand
	Just to save some work.
2022-01-11	Add the framework for character classes.	JSDurand
	Now we have the potential to recognize character classes. But the most important task for us now is to experiment with ((B)RN)GLR algorithms, so we leave the character classes at the present state for a moment.
2022-01-04	temporary commit	JSDurand
	Now we can read grammars from a file. But we need to check if it works for reading strings still.
2021-11-09	save point: representation of grammar might be too rough.	JSDurand
	The current representation of the grammar is the most primitive BNF. This is the simplest to implement, but is difficult to cope with user requirements. Moreover, I find another paper describing the GLR algorithm, so I need to think about the representation of the grammar more. In particular, I would like the generation of the grammar to be incremental, so per chance its data type should be adapted accordingly.
2021-11-08	initial commit	JSDurand
	Now the rough framework is established and the grammar class is sort of ready. It remains to write a general input reading mechanism.