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export fn and finch build --shared: libraries a C program loads (game scripts)

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export fn name(...) is a C function by that name (numbers, bool, char, pointers in and out).
--shared builds lib<name>.so / <name>.dll with no main. finch_module_on_fatal(handler) lets the
host take runtime errors over (longjmp out) instead of the process exiting.
tests/shared.sh: a C host loads one, calls it and survives an index error.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Nexoniarz 2026-10-11 02:14:09 +02:00
commit 68637a35a7
16 changed files with 148 additions and 10 deletions
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3
src/lexer.cpp
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@ -5,7 +5,7 @@
#include <unordered_map>
static const std::unordered_map<std::string, Tok> keywords = {
{"fn", Tok::Fn}, {"return", Tok::Return}, {"if", Tok::If},
{"fn", Tok::Fn}, {"export", Tok::Export}, {"return", Tok::Return}, {"if", Tok::If},
{"else", Tok::Else}, {"while", Tok::While}, {"for", Tok::For},
{"in", Tok::In}, {"break", Tok::Break}, {"continue", Tok::Continue},
{"true", Tok::True}, {"false", Tok::False}, {"null", Tok::Null},
@ -154,6 +154,7 @@ const char *tokName(Tok t) {
case Tok::String: return "a string";
case Tok::Char: return "a char";
case Tok::Fn: return "'fn'";
case Tok::Export: return "'export'";
case Tok::Return: return "'return'";
case Tok::If: return "'if'";
case Tok::Else: return "'else'";