libabacus/src/table.c

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4.9 KiB
C
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#include "table.h"
#include "lexer.h"
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#include "util.h"
#include <stdlib.h>
void libab_table_init(libab_table* table) {
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libab_trie_init(&table->trie);
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libab_ref_null(&table->parent);
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}
libab_table_entry* libab_table_search_filter(libab_table* table,
const char* string, void* data,
compare_func compare) {
void* to_return = NULL;
do {
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const ll* matches = libab_trie_get(&table->trie, string);
to_return = ll_find(matches, data, compare);
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table = libab_ref_get(&table->parent);
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} while (table && to_return == NULL);
return to_return;
}
libab_table_entry* libab_table_search(libab_table* table, const char* string) {
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void* to_return = NULL;
do {
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to_return = ll_head(libab_trie_get(&table->trie, string));
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table = libab_ref_get(&table->parent);
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} while (table && to_return == NULL);
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return to_return;
}
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#define OP_TYPE_COMPARATOR(NAME, TYPE) \
int NAME(const void* left, const void* right) { \
const libab_table_entry* entry = right; \
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return entry->variant == ENTRY_OP && entry->data_u.op.variant == TYPE; \
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}
OP_TYPE_COMPARATOR(libab_table_compare_op_prefix, OPERATOR_PREFIX)
OP_TYPE_COMPARATOR(libab_table_compare_op_infix, OPERATOR_INFIX)
OP_TYPE_COMPARATOR(libab_table_compare_op_postfix, OPERATOR_POSTFIX)
int libab_table_compare_value(const void* left, const void* right) {
const libab_table_entry* entry = right;
return entry->variant == ENTRY_VALUE;
}
int libab_table_compare_basetype(const void* left, const void* right) {
const libab_table_entry* entry = right;
return entry->variant == ENTRY_BASETYPE;
}
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int libab_table_compare_type_param(const void* left, const void* right) {
const libab_table_entry* entry = right;
return entry->variant == ENTRY_TYPE_PARAM;
}
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libab_operator* libab_table_search_operator(libab_table* table,
const char* string, int type) {
libab_table_entry* entry = NULL;
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if (type == OPERATOR_PREFIX) {
entry = libab_table_search_filter(table, string, NULL,
libab_table_compare_op_prefix);
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} else if (type == OPERATOR_INFIX) {
entry = libab_table_search_filter(table, string, NULL,
libab_table_compare_op_infix);
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} else if (type == OPERATOR_PREFIX) {
entry = libab_table_search_filter(table, string, NULL,
libab_table_compare_op_postfix);
}
return entry ? &entry->data_u.op : NULL;
}
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libab_basetype* libab_table_search_basetype(libab_table* table,
const char* string) {
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libab_table_entry* entry = libab_table_search_filter(
table, string, NULL, libab_table_compare_basetype);
return entry ? entry->data_u.basetype : NULL;
}
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void libab_table_search_value(libab_table* table, const char* string,
libab_ref* ref) {
libab_table_entry* entry = libab_table_search_filter(
table, string, NULL, libab_table_compare_value);
if (entry) {
libab_ref_copy(&entry->data_u.value, ref);
} else {
libab_ref_null(ref);
}
}
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void libab_table_search_type_param(libab_table* table, const char* string,
libab_ref* ref) {
libab_table_entry* entry = libab_table_search_filter(
table, string, NULL, libab_table_compare_type_param);
if (entry) {
libab_ref_copy(&entry->data_u.type_param, ref);
} else {
libab_ref_null(ref);
}
}
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libab_result libab_table_put(libab_table* table, const char* string,
libab_table_entry* entry) {
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return libab_trie_put(&table->trie, string, entry);
}
int _table_foreach_entry_free(void* data, va_list args) {
libab_table_entry_free(data);
free(data);
return 0;
}
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void libab_table_set_parent(libab_table* table, libab_ref* parent) {
libab_ref_free(&table->parent);
libab_ref_copy(parent, &table->parent);
}
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void libab_table_clear(libab_table* table) {
libab_trie_clear(&table->trie);
}
void libab_table_free(libab_table* table) {
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libab_trie_foreach(&table->trie, NULL, compare_always,
_table_foreach_entry_free);
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libab_trie_free(&table->trie);
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libab_ref_free(&table->parent);
}
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void libab_table_entry_free(libab_table_entry* entry) {
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if (entry->variant == ENTRY_OP) {
libab_operator_free(&entry->data_u.op);
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} else if (entry->variant == ENTRY_BASETYPE) {
libab_basetype_free(entry->data_u.basetype);
} else if (entry->variant == ENTRY_VALUE) {
libab_ref_free(&entry->data_u.value);
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} else if (entry->variant == ENTRY_TYPE_PARAM) {
libab_ref_free(&entry->data_u.type_param);
}
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}