mirror of
https://github.com/wrog/lambdamoo
synced 2026-08-13 00:26:05 -04:00
fdeb879334
really need to be sure .h files are not getting multiply included
(I had thought this was already best-practice from the K&R days).
new rules for forming the symbol from the filename:
(1) capitalize each word of the filename,
(2) final 'H' is capitalized
... *unless* the rest of the filename is an initialism (AST, DB)
which would make the resulting symbol all-caps (AST_H, DB_H)
which we do not want (since it might collide with something real)
so use a small 'h' in those cases (AST_h, DB_h)
(3) make sure this preprocessor symbol is used *NOWHERE* else.
--wrog
25 lines
779 B
C
25 lines
779 B
C
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/* A string intern table.
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*
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* The intern table holds a list of strings. Given a new string, we
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* either str_dup it and add it to the table or return a ref to the
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* existing copy of the string from the table if present.
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*
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* This implementation has one big intern table that's designed to be
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* used during db load then freed all at once. It might be
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* interesting to intern all strings even during runtime. Somebody
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* else can do this.
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* */
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#ifndef Str_Intern_H
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#define Str_Intern_H 1
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/* 0 for a default size */
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extern void str_intern_open(int table_size);
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extern void str_intern_close(void);
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/* Make an immutable copy of s. If there's an intern table open,
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possibly share storage. */
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extern const char *str_intern(const char *s);
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#endif /* !Str_Intern_H */
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