40 lines
791 B
C++
40 lines
791 B
C++
#ifndef MAPMAP_HPP
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#define MAPMAP_HPP
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#include <map>
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#include <cassert>
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#include <memory>
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struct mapmap_instance {
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std::map<const char *, void *> m;
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};
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static inline mapmap_instance mapmap_create() {
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mapmap_instance ret;
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return ret;
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}
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static inline void* mapmap(void *amap_instance, AMAP_OP op, const char *key, void *ptr) {
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mapmap_instance *map = (mapmap_instance *) amap_instance;
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if(op == AMAP_GET) {
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try {
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return map->m[key];
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} catch(...) {
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return ptr;
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}
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} else if(op == AMAP_SET) {
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try {
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map->m[key] = ptr;
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return map; // non-null
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} catch(...) {
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return NULL;
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}
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} else { // if(op == AMAP_ERASE) {
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assert(op == AMAP_ERASE);
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map->m = std::move(std::map<const char *, void *>());
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return (void *)((uint8_t)(NULL) - 1L);
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}
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}
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#endif // MAPMAP_HPP
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