Experiments/libabacus
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Add functions to separately register different types of operators.

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This commit is contained in:
Danila Fedorin
2018-02-17 14:00:37 -08:00
parent a3ce8fbd9c
commit 8cd1d23120
4 changed files with 45 additions and 8 deletions
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24
src/libabacus.c
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@@ -1,5 +1,6 @@
#include "libabacus.h"
#include <stdlib.h>
#include "util.h"
libab_result libab_init(libab* ab) {
libab_table_init(&ab->table);
@@ -7,33 +8,50 @@ libab_result libab_init(libab* ab) {
return libab_lexer_init(&ab->lexer);
}
libab_result libab_register_operator(libab* ab, const char* op, int precedence, libab_function_ptr func) {
libab_result _register_operator(libab* ab, const char* op, int token_type, int precedence, libab_function_ptr func) {
libab_result result = LIBAB_SUCCESS;
libab_table_entry* new_entry;
if((new_entry = malloc(sizeof(*new_entry)))) {
new_entry->variant = ENTRY_OPERATOR;
new_entry->variant = ENTRY_OP;
new_entry->data_u.op.function = func;
new_entry->data_u.op.precedence = precedence;
} else {
result = LIBAB_MALLOC;
}
if(result == LIBAB_SUCCESS) {
result = libab_convert_lex_result(eval_config_add(&ab->lexer.config, op, token_type));
}
if(result == LIBAB_SUCCESS) {
result = libab_table_put(&ab->table, op, new_entry);
}
if(result != LIBAB_SUCCESS) {
eval_config_remove(&ab->lexer.config, op, token_type);
free(new_entry);
}
return result;
}
libab_result libab_register_operator_infix(libab* ab, const char* op, int precedence, libab_function_ptr func) {
return _register_operator(ab, op, TOKEN_OP_INFIX, precedence, func);
}
libab_result libab_register_operator_prefix(libab* ab, const char* op, libab_function_ptr func) {
return _register_operator(ab, op, TOKEN_OP_PREFIX, 0, func);
}
libab_result libab_register_operator_postfix(libab* ab, const char* op, libab_function_ptr func) {
return _register_operator(ab, op, TOKEN_OP_POSTFIX, 0, func);
}
libab_result libab_register_function(libab* ab, const char* name, libab_function_ptr func) {
libab_result result = LIBAB_SUCCESS;
libab_table_entry* new_entry;
if((new_entry = malloc(sizeof(*new_entry)))) {
new_entry->variant = ENTRY_FUNCTION;
new_entry->variant = ENTRY_FUN;
new_entry->data_u.function.function = func;
} else {
result = LIBAB_MALLOC;

4
src/table.c
View File

@@ -17,7 +17,7 @@ libab_table_entry* table_search(libab_table* table, const char* string) {
libab_operator* libab_table_search_operator(libab_table* table, const char* string) {
libab_table_entry* entry = table_search(table, string);
libab_operator* to_return = NULL;
if(entry && entry->variant == ENTRY_OPERATOR) {
if(entry && entry->variant == ENTRY_OP) {
to_return = &entry->data_u.op;
}
return to_return;
@@ -25,7 +25,7 @@ libab_operator* libab_table_search_operator(libab_table* table, const char* stri
libab_function* libab_table_search_function(libab_table* table, const char* string) {
libab_table_entry* entry = table_search(table, string);
libab_function* to_return = NULL;
if(entry && entry->variant == ENTRY_FUNCTION) {
if(entry && entry->variant == ENTRY_FUN) {
to_return = &entry->data_u.function;
}
return to_return;