Commit graph

8 commits

Author SHA1 Message Date
dafe6d34b2 generate-flex-bison.mk: Add dependency on config file
Signed-off-by: Jan Lindemann <jan@janware.com>
2017-11-05 16:36:08 +01:00
3cba245b77 grammar.py and friends: Improve line numbers and headers
Line numbers of parsed input are now automatically maintained. More
needed data structures are now automatically created in the API header
file.

Signed-off-by: Jan Lindemann <jan@janware.com>
2017-11-03 12:54:19 +01:00
a3a8313ce8 grammar.py and friends: Make list parsing run through
First time parsing doesn't error out with a syntax error. No usable AST
is produced, strings are not returned from lexer, and AST lists aren't
lists, really.

TEXT:="Hello world!"; had to be excluded from the example, because I
don't get how this could be parsed with the given syntax. There's a
special sequence "all visible characters", but any lexer regex I could
think of will also match the types defining "alphabetic character" and
return the respective tokens (e.g. T_A) or vice-versa, depending on the
order in the lexer input file. I suppose, the only sensible way to
handle this, is to define "all visible characters" by defining the
tokens for the missing characters, and then use them along T_A ... T_Z
or their derived types.

Signed-off-by: Jan Lindemann <jan@janware.com>
2017-11-02 13:47:19 +01:00
1a7a34f73c grammar.py and friends: Implement config file support
Signed-off-by: Jan Lindemann <jan@janware.com>
2017-11-02 08:54:39 +01:00
16ce7abd93 grammar.py and friends: Make test/grammar compile and start
Doesn't successfully parse grammartest.code, yet, it errors out with a
syntax error on whitespace. But at least it compiles and starts.

Signed-off-by: Jan Lindemann <jan@janware.com>
2017-10-30 13:05:22 +01:00
8c5934725c grammar.py: Add support for --irrelevant-symbols
Arguments to --irrelevant-symbols are not meant to be represented in the
AST resulting from parsing.

Also, add pad() to misc.py.

Signed-off-by: Jan Lindemann <jan@janware.com>
2017-10-30 10:00:25 +01:00
6297f10f55 grammar.py et al: Centralize more code
More code is removed from the special parser directories and centralized
into grammar.py, Cmd.py, and generate-flex-bison.mk.

Signed-off-by: Jan Lindemann <jan@janware.com>
2017-10-29 18:25:55 +01:00
5755d14d84 initial checkin
Signed-off-by: Jan Lindemann <jan@janware.com>
2017-07-24 12:19:34 +02:00