Where do I find the definition of Rf_protect() in R's sources? -

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i reading r sources , trying learn heap structure. i'm looking definition of protect(), i've founded:

$ grep -rn "#define protect(" * src/include/rinternals.h:642:#define protect(s) rf_protect(s)

and then

$ grep -rn "rf_protect(" * src/include/rinternals.h:803:sexp rf_protect(sexp); src/include/rinternals.h:1267:sexp rf_protect(sexp);

but didn't find rf_protect()'s definition.

thanks.

the rf_ prefix common idiom giving plain c code resemblance of namespace. want protect(...) instead:

/usr/share/r/include/rinternals.h:#define protect               rf_protect

and given how 'core' this, may start in src/main quick grep -c leads src/main/memory.c. et voila on lines 3075 3081

sexp protect(sexp s) {     if (r_ppstacktop >= r_ppstacksize)     r_signal_protect_error();     r_ppstack[r_ppstacktop++] = chk(s);     return s; }

now said, want pay attention of file , not function.


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