I clarify the way in which to learn Perl core supply codes. Perl 5.36.0 is used on this description.
That is initially The way to read Perl core source codes | Perl ABC
most important operate is the entry level of
It’s written in
perlmain.c, however Perl has no C supply code that title is
Processing perl command line arguments are began from perl_parse operate.
perl_parse is outlined in perl.c.
Go ahead to parse_body operate.
parse_body is outlined in perl.c
You may see the processing logic of command line arguments.
Subsequent is the tokenizer. The components of Perl syntax are transformed to tokens.
Tokenizing is began from lex_start operate.
lex_start is outlined in toke.c.
Subsequent is the parser. The parser converts tokens to AST(abstruct syntax tree).
Parsing is began from yyparse operate.
yyparse is outlined in perly.c.
After AST is optimized, Perl run from perl_run operate.
perl_run is outlined in perl.c.
Go ahead to run_body operate.
run_body is outlined in perl.c.
Go ahead to CALLRUNOPS.
CALLRUNOPS is outlined as
PL_runops in perl.h
Moreover, macros are outlined as follows.
perl.h:#outline CALLRUNOPS PL_runops embedvar.h:#outline PL_runops (vTHX->Irunops) intrpvar.h:PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT) perl.h:# outline RUNOPS_DEFAULT Perl_runops_standard
Go ahead to
Perl_runops_standard is outlined in run.c.
The member op_ppaddr of
OP construction known as.
op_ppaddr is a operate pointer to perlform an operation.
Operators are outlined within the following sources.
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