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better architecture with unions

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This commit is contained in:
Richard Thier 2024-09-18 14:49:30 +02:00
parent b5419a1a26
commit 3ea872d744
1 changed files with 16 additions and 4 deletions
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20
engine/slc.h
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@ -107,6 +107,12 @@ enum SLC_IO_OP {
}; };
typedef enum SLC_IO_OP SLC_IO_OP; typedef enum SLC_IO_OP SLC_IO_OP;
union symptr {
uint32_t *varp;
wordstart *worp;
};
typedef union symptr symptr;
/** /**
* Function-abstraction for a "symbol-table". * Function-abstraction for a "symbol-table".
* *
@ -123,8 +129,7 @@ typedef enum SLC_IO_OP SLC_IO_OP;
* @param ptr When adding a found word/variable to the symbol table, the key will point to this wordstart* or uint32_t* * @param ptr When adding a found word/variable to the symbol table, the key will point to this wordstart* or uint32_t*
* @returns The word/var definition stored for the key, or NULL when it is not stored yet or op is SET and there was an error. * @returns The word/var definition stored for the key, or NULL when it is not stored yet or op is SET and there was an error.
*/ */
typedef void* (*sym)(SLC_SYM_OP op, char *key, void *ptr); typedef symptr (*sym)(SLC_SYM_OP op, char *key, symptr ptr);
// TODO: union for this?
/** /**
* Function-abstraction for an integer "stack". * Function-abstraction for an integer "stack".
@ -161,6 +166,14 @@ typedef uint32_t (*stack)(SLC_STACK_OP op, uint32_t param);
*/ */
typedef uint32_t (*session)(SLC_SESSION_OP op, uint32_t i, uint32_t j); typedef uint32_t (*session)(SLC_SESSION_OP op, uint32_t i, uint32_t j);
union iores {
/** Either the cmd result or the handle pointer*/
const char *ptr;
/** The read character */
char c;
};
typedef union iores iores;
/** /**
* Function-abstraction for io connectors. * Function-abstraction for io connectors.
* *
@ -180,8 +193,7 @@ typedef uint32_t (*session)(SLC_SESSION_OP op, uint32_t i, uint32_t j);
* @param param The name or temporary name or command or the handle pointer parameter depending on op. * @param param The name or temporary name or command or the handle pointer parameter depending on op.
* @returns A handle pointer or pointer to character to read / written or closed/unlocked handle (NULL on errors). Also cmd stdout. * @returns A handle pointer or pointer to character to read / written or closed/unlocked handle (NULL on errors). Also cmd stdout.
*/ */
typedef const char* (*ioconn)(SLC_IO_OP op, const char *param); typedef iores (*ioconn)(SLC_IO_OP op, const char *param);
// TODO: union for this?
/** /**
* Function-abstraction for reading the source code byte-by-byte. * Function-abstraction for reading the source code byte-by-byte.