Experiments/libabacus
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Switch to using values for storing function entries.

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This commit is contained in:
Danila Fedorin 2018-05-14 21:32:36 -07:00
parent b96d1804aa
commit 70e0e75d24
3 changed files with 122 additions and 67 deletions
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13
include/table.h
View File

@ -32,8 +32,7 @@ struct libab_table_s {
enum libab_table_entry_variant_e {
ENTRY_VALUE,
ENTRY_BASETYPE,
ENTRY_OP,
ENTRY_FUN
ENTRY_OP
};
/**
@ -50,7 +49,6 @@ struct libab_table_entry_s {
*/
union {
libab_operator op;
libab_function function;
libab_basetype* basetype;
libab_ref value;
} data_u;
@ -94,15 +92,6 @@ libab_table_entry* libab_table_search(libab_table* table, const char* string);
*/
libab_operator* libab_table_search_operator(libab_table* table,
const char* string, int type);
/**
* Searches for the given string in the table, returning a value only
* if it is a function.
* @param table the table to search.
* @param string the string to search for.
* @return the found function, or NULL if it was not found.
*/
libab_function* libab_table_search_function(libab_table* table,
const char* string);
/**
* Searches for the given basetype in the table, returning a value
* only if it's a basetype.

160
src/libabacus.c
View File

@ -2,8 +2,35 @@
#include "lexer.h"
#include "reserved.h"
#include "util.h"
#include "value.h"
#include <stdlib.h>
void _free_function_list(void* function_list) {
libab_function_list_free(function_list);
free(function_list);
}
static libab_basetype _basetype_function_list = {
_free_function_list,
NULL,
0
};
void _free_function(void* function) {
libab_function_free(function);
free(function);
}
static libab_basetype_param _basetype_function_params[] = {
{ BT_LIST, NULL }
};
static libab_basetype _basetype_function = {
_free_function,
_basetype_function_params,
1
};
libab_result _prepare_types(libab* ab, void (*free_function)(void*));
libab_result libab_init(libab* ab, void* (*parse_function)(const char*),
@ -128,27 +155,103 @@ libab_result libab_register_operator_postfix(libab* ab, const char* op,
return _register_operator(ab, op, OPERATOR_POSTFIX, 0, 0, type, func);
}
libab_result libab_register_function(libab* ab, const char* name,
libab_ref* type, libab_function_ptr func) {
libab_result _create_value_function_internal(libab_ref* into, libab_ref* type,
libab_function_ptr func) {
libab_ref function_ref;
libab_result result = libab_create_function_internal(&function_ref, type, func);
libab_ref_null(into);
if(result == LIBAB_SUCCESS) {
libab_ref_free(into);
result = libab_create_value_ref(into, &function_ref, type);
}
libab_ref_free(&function_ref);
return result;
}
libab_result _create_value_function_list(libab_ref* into, libab_ref* type) {
libab_ref list_ref;
libab_result result = libab_create_function_list(&list_ref, type);
libab_ref_null(into);
if(result == LIBAB_SUCCESS) {
libab_ref_free(into);
result = libab_create_value_ref(into, &list_ref, type);
}
libab_ref_free(&list_ref);
return result;
}
static int _table_compare_value(const void* left, const void* right) {
const libab_table_entry* entry = right;
return entry->variant == ENTRY_VALUE;
}
libab_result _libab_register_function_existing(libab* ab, libab_table_entry* entry, libab_ref* function_val) {
libab_value* old_value;
libab_parsetype* old_type;
libab_result result = LIBAB_SUCCESS;
libab_function* new_function = NULL;
libab_table_entry* new_entry;
if ((new_entry = malloc(sizeof(*new_entry)))) {
new_entry->variant = ENTRY_FUN;
new_function = &new_entry->data_u.function;
result = libab_function_init_internal(new_function, type, func);
old_value = libab_ref_get(&entry->data_u.value);
old_type = libab_ref_get(&old_value->type);
if(old_type->data_u.base == &_basetype_function_list) {
libab_function_list* list = libab_ref_get(&old_value->data);
result = libab_function_list_insert(list, function_val);
} else if(old_type->data_u.base == &_basetype_function) {
libab_ref new_list;
result = _create_value_function_list(&new_list, &ab->type_function_list);
if(result == LIBAB_SUCCESS) {
libab_function_list* list = libab_ref_get(&((libab_value*) libab_ref_get(&new_list))->data);
result = libab_function_list_insert(list, &entry->data_u.value);
if(result == LIBAB_SUCCESS) {
result = libab_function_list_insert(list, function_val);
}
}
if(result == LIBAB_SUCCESS) {
libab_ref_swap(&entry->data_u.value, &new_list);
}
libab_ref_free(&new_list);
} else {
libab_ref_swap(&entry->data_u.value, function_val);
}
return result;
}
libab_result _libab_register_function_new(libab* ab, const char* name, libab_ref* function_val) {
libab_result result = LIBAB_SUCCESS;
libab_table_entry* entry;
if((entry = malloc(sizeof(*entry)))) {
entry->variant = ENTRY_VALUE;
libab_ref_copy(function_val, &entry->data_u.value);
result = libab_table_put(libab_ref_get(&ab->table), name, entry);
if(result != LIBAB_SUCCESS) {
libab_table_entry_free(entry);
free(entry);
}
} else {
result = LIBAB_MALLOC;
}
if (result == LIBAB_SUCCESS) {
result = libab_table_put(libab_ref_get(&ab->table), name, new_entry);
return result;
}
if (result != LIBAB_SUCCESS) {
if(new_function)
libab_function_free(new_function);
free(new_entry);
libab_result libab_register_function(libab* ab, const char* name,
libab_ref* type, libab_function_ptr func) {
libab_table_entry* existing_entry;
libab_ref function_value;
libab_result result =
_create_value_function_internal(&function_value, type, func);
if(result == LIBAB_SUCCESS) {
existing_entry =
libab_table_search_filter(libab_ref_get(&ab->table), name, NULL, _table_compare_value);
if(existing_entry) {
result = _libab_register_function_existing(ab, existing_entry, &function_value);
} else {
result = _libab_register_function_new(ab, name, &function_value);
}
libab_ref_free(&function_value);
}
return result;
@ -174,32 +277,6 @@ libab_result libab_register_basetype(libab* ab, const char* name,
return result;
}
void _free_function_list(void* function_list) {
libab_function_list_free(function_list);
free(function_list);
}
static libab_basetype _basetype_function_list = {
_free_function_list,
NULL,
0
};
void _free_function(void* function) {
libab_function_free(function);
free(function);
}
static libab_basetype_param _basetype_function_params[] = {
{ BT_LIST, NULL }
};
static libab_basetype _basetype_function = {
_free_function,
_basetype_function_params,
1
};
libab_result _prepare_types(libab* ab, void (*free_function)(void*)) {
libab_result result = LIBAB_SUCCESS;
@ -253,6 +330,9 @@ libab_result libab_create_type(libab* ab, libab_ref* into, const char* type) {
if (result == LIBAB_SUCCESS) {
result = libab_parser_parse_type(&ab->parser, &tokens, type, into);
}
if (result == LIBAB_SUCCESS) {
result = libab_resolve_parsetype(libab_ref_get(into), libab_ref_get(&ab->table));
}
ll_foreach(&tokens, NULL, compare_always, libab_lexer_foreach_match_free);
ll_free(&tokens);
return result;

14
src/table.c
View File

@ -53,18 +53,6 @@ libab_operator* libab_table_search_operator(libab_table* table,
return entry ? &entry->data_u.op : NULL;
}
int _table_compare_function(const void* left, const void* right) {
const libab_table_entry* entry = right;
return entry->variant == ENTRY_FUN;
}
libab_function* libab_table_search_function(libab_table* table,
const char* string) {
libab_table_entry* entry =
libab_table_search_filter(table, string, NULL, _table_compare_function);
return entry ? &entry->data_u.function : NULL;
}
int _table_compare_basetype(const void* left, const void* right) {
const libab_table_entry* entry = right;
return entry->variant == ENTRY_BASETYPE;
@ -116,8 +104,6 @@ void libab_table_free(libab_table* table) {
void libab_table_entry_free(libab_table_entry* entry) {
if (entry->variant == ENTRY_OP) {
libab_operator_free(&entry->data_u.op);
} else if (entry->variant == ENTRY_FUN) {
libab_function_free(&entry->data_u.function);
} else if (entry->variant == ENTRY_BASETYPE) {
libab_basetype_free(entry->data_u.basetype);
} else if (entry->variant == ENTRY_VALUE) {