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67 lines
1.3 KiB
C
67 lines
1.3 KiB
C
#pragma once
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#include "md.h"
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typedef struct
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{
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MD_b8 failed;
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MD_String8 why;
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} SerError;
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typedef struct
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{
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MD_u8 *data; // set to 0 to dry run and get maximum size. max doesn't matter in this case
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MD_u64 cur;
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MD_u64 max;
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MD_Arena *arena; // allocate everything new on this, so that if serialization fails allocations can be undone
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// Serializing should never allocate. So this can be null when you serialize
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int version;
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SerError cur_error;
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MD_Arena *error_arena; // all error messages are allocated here
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MD_b8 serializing;
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} SerState;
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void ser_bytes(SerState *ser, MD_u8 *bytes, MD_u64 bytes_size)
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{
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if(!ser->data && !ser->serializing)
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{
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ser->cur_error = (SerError){.failed = true, .why = MD_S8Lit("Deserializing but the data is null")};
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}
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if(!ser->cur_error.failed)
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{
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if(ser->data)
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{
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// maximum doesn't matter unless writing to data
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if(ser->cur + bytes_size > ser->max)
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{
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ser->cur_error = (SerError){.failed = true, .why = MD_S8Lit("Too big bro")};
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}
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else
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{
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if(ser->serializing)
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{
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memcpy(ser->data + ser->cur, bytes, bytes_size);
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}
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else
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{
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memcpy(bytes, ser->data + ser->cur, bytes_size);
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}
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}
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}
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ser->cur += bytes_size;
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}
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}
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#define SER_MAKE_FOR_TYPE(type) void ser_##type(SerState *ser, type *into) \
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{ \
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ser_bytes(ser, (MD_u8*)into, sizeof(*into)); \
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}
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SER_MAKE_FOR_TYPE(int);
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