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3 commits

Author SHA1 Message Date
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
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
40e6add5ad Continue implementation of grammar.py
Signed-off-by: Jan Lindemann <jan@janware.com>
2017-10-25 13:45:44 +02:00