Experiment: DNA: makesdna parser #118532
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Reference: blender/blender#118532
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Delete Branch "guishe/blender:dna-parser"
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Experimental initial DNA Parser. This attempts to remove some
limitations in DNA files, like using
#define
int values,or for c++ files to allow use enums with fixed type, or eventually namespaces.
This initial state attempts to parse same as makesdna has been doing,
but allowing to easily extend the parser, so in the future we can parse more
declarations like namespaces, o default value initialization in structs members.
Instead of
preprocessing
the file, now the text remains as read from the fileand a lexer gather all tokens, ignoring white spaces or comments and parser tries
to match a sequence of tokens to build definitions that will be used by makesdna.
Using the plain text as it is read from the file, this can be used now too to print
where errors have occurred, like alignment or unsupported types.
Notes:
#if/ifdef/ifndef .... #endif
blocks are ignored except#ifdef DNA_DEPRECATED_ALLOW ... #endif
blocks in the main scope.In action:
It currently parses everything like makedna has been doing, but can now also parse enums with fixed types or const int defines, even structs defined within structs (although these definitions remain unused for the time being).
Experiment: WIP: DNA: makedna parserto Experiment: WIP: DNA: makesdna parserExperiment: WIP: DNA: makesdna parserto Experiment: DNA: makesdna parser@ -1140,3 +1140,3 @@
/* Temp caching of UI-generated strings. */
char size_str[16];
char datetime_str[16 + 8];
char datetime_str[DATETIME_STR_SIZE];
Although it is ignored by the parser, even the ignored structures are parsed then discarded, expressions like sums would not be supported to parse
Thanks for the patch. I haven't looked at it in detail yet. I was wondering whether this is really a better approach than trying to use clang to parse the files as was tried by @LazyDodo afaik.
@blender-bot build
I abandoned it because clang/llvm is an optional dep for us, we can't rely on it fore a core component like makesdna , it would be a much much nicer solution though.
@blender-bot build
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