Register reserved operators as tokens.
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@ -58,6 +58,7 @@ enum libab_lexer_token_e {
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TOKEN_OP_INFIX,
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TOKEN_OP_INFIX,
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TOKEN_OP_PREFIX,
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TOKEN_OP_PREFIX,
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TOKEN_OP_POSTFIX,
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TOKEN_OP_POSTFIX,
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TOKEN_OP_RESERVED,
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TOKEN_KW_IF,
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TOKEN_KW_IF,
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TOKEN_KW_ELSE,
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TOKEN_KW_ELSE,
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TOKEN_KW_WHILE,
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TOKEN_KW_WHILE,
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@ -37,5 +37,17 @@ typedef struct libab_reserved_operator_s libab_reserved_operator;
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* @return the reserved operator, if it is found.
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* @return the reserved operator, if it is found.
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*/
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*/
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const libab_reserved_operator* libab_find_reserved_operator(const char* name);
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const libab_reserved_operator* libab_find_reserved_operator(const char* name);
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/**
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* Registers the existing reserved operators into the given lexer.
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* @param lexer the lexer to register into.
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* @return the result of the registration.
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*/
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libab_result libab_register_reserved_operators(libab_lexer* lexer);
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/**
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* Remove the existing reserved operators from the given lexer.
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* @param lexer the lexer to remove from.
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* @return the result of the removal.
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*/
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libab_result libab_remove_reserved_operators(libab_lexer* lexer);
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#endif
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#endif
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@ -43,6 +43,10 @@ libab_result libab_lexer_init(libab_lexer* lexer) {
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eval_config_add(&lexer->config, words[i], tokens[i]));
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eval_config_add(&lexer->config, words[i], tokens[i]));
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}
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}
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if(result != LIBAB_SUCCESS) {
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eval_config_free(&lexer->config);
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}
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return result;
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return result;
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}
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}
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@ -1,11 +1,25 @@
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#include "libabacus.h"
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#include "libabacus.h"
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#include <stdlib.h>
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#include <stdlib.h>
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#include "util.h"
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#include "util.h"
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#include "reserved.h"
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libab_result libab_init(libab* ab) {
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libab_result libab_init(libab* ab) {
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libab_result result;
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libab_table_init(&ab->table);
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libab_table_init(&ab->table);
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libab_parser_init(&ab->parser, &ab->table);
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libab_parser_init(&ab->parser, &ab->table);
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return libab_lexer_init(&ab->lexer);
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result = libab_lexer_init(&ab->lexer);
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if(result == LIBAB_SUCCESS) {
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result = libab_register_reserved_operators(&ab->lexer);
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}
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if(result != LIBAB_SUCCESS) {
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libab_table_free(&ab->table);
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libab_parser_free(&ab->parser);
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libab_lexer_free(&ab->lexer);
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}
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return result;
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}
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}
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void _sanitize(char* to, const char* from, size_t buffer_size) {
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void _sanitize(char* to, const char* from, size_t buffer_size) {
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@ -1,5 +1,6 @@
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#include "reserved.h"
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#include "reserved.h"
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#include "string.h"
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#include "string.h"
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#include "util.h"
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static const libab_reserved_operator libab_reserved_operators[] = {
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static const libab_reserved_operator libab_reserved_operators[] = {
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{
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{
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@ -8,10 +9,10 @@ static const libab_reserved_operator libab_reserved_operators[] = {
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1 /* Right associative, a = b = 6 should be a = (b = 6) */
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1 /* Right associative, a = b = 6 should be a = (b = 6) */
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}
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}
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};
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};
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const libab_reserved_operator* libab_find_reserved_operator(const char* name) {
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static const size_t element_count =
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static const size_t element_count =
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sizeof(libab_reserved_operators) / sizeof(libab_reserved_operator);
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sizeof(libab_reserved_operators) / sizeof(libab_reserved_operator);
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const libab_reserved_operator* libab_find_reserved_operator(const char* name) {
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size_t i;
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size_t i;
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for(i = 0; i < element_count; i++) {
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for(i = 0; i < element_count; i++) {
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if(strcmp(name, libab_reserved_operators[i].op) == 0)
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if(strcmp(name, libab_reserved_operators[i].op) == 0)
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@ -19,3 +20,23 @@ const libab_reserved_operator* libab_find_reserved_operator(const char* name) {
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}
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}
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return NULL;
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return NULL;
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}
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}
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libab_result libab_register_reserved_operators(libab_lexer* lexer) {
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libab_result result = LIBAB_SUCCESS;
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size_t i;
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for(i = 0; i < element_count && result == LIBAB_SUCCESS; i++) {
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result = libab_convert_lex_result(eval_config_add(&lexer->config,
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libab_reserved_operators[i].op, TOKEN_OP_RESERVED));
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}
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return result;
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}
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libab_result libab_remove_reserved_operators(libab_lexer* lexer) {
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libab_result result = LIBAB_SUCCESS;
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size_t i;
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for(i = 0; i < element_count && result == LIBAB_SUCCESS; i++) {
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result = libab_convert_lex_result(eval_config_remove(&lexer->config,
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libab_reserved_operators[i].op, TOKEN_OP_RESERVED));
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}
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return result;
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}
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