7 files changed, 446 insertions, 12 deletions

diff --git a/eval.c b/eval.c
new file mode 100644
index 0000000..4e593d9
--- /dev/null
+++ b/eval.c
@@ -0,0 +1,61 @@
+#include "eval.h"
+#include "types.h"
+
+
+LISP_OBJECT *eval_apply(LISP_OBJECT *lisp_list, HashMap *env)
+{
+        if(lisp_list == NULL || lisp_list->type != LISP_TYPE_LIST)
+                return lisp_list;
+
+        LISP_OBJECT *symbol = lisp_list->value.list->ptr;
+        List *args = lisp_list->value.list->next;
+
+        LISP_OBJECT *func = hash_map_find(env, symbol->value.symbol)->value;
+
+        if(func->type != LISP_TYPE_FUNC)
+                return lisp_list;
+
+        List *tmp = lisp_list->value.list;
+        lisp_list->value.list = args;
+        LISP_OBJECT *ret = func->value.func(lisp_list);
+        lisp_list->value.list = tmp;
+        return ret;
+}
+
+LISP_OBJECT *eval_prepere_args(LISP_OBJECT *lisp_list, HashMap *env)
+{
+        if(lisp_list == NULL || lisp_list->type != LISP_TYPE_LIST)
+                return lisp_list;
+
+        LISP_OBJECT *args = lisp_object_make_list();
+        List **args_list = &args->value.list;
+
+        List *list = lisp_list->value.list;
+        LISP_OBJECT *obj = NULL;
+
+        while(list)
+        {
+                obj = list->ptr;
+                if(obj->type==LISP_TYPE_LIST)
+                        obj = eval(obj, env);
+
+                *args_list = list_push(*args_list, obj);
+                list = list->next;
+        }
+
+        *args_list = list_reverse(*args_list);
+
+        return eval_apply(args, env);
+}
+
+
+LISP_OBJECT *eval(LISP_OBJECT *lisp_obj, HashMap *env)
+{
+        if(lisp_obj == NULL)
+                return NULL;
+
+        if(lisp_obj->type == LISP_TYPE_LIST)
+                return eval_prepere_args(lisp_obj, env);
+
+        return lisp_obj;
+}
diff --git a/eval.h b/eval.h
new file mode 100644
index 0000000..0af0c87
--- /dev/null
+++ b/eval.h
@@ -0,0 +1,20 @@
+#ifndef _EVAL
+#define _EVAL
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "types.h"
+#include "memory.h"
+
+
+// HashMap *repl_env = NULL;
+
+LISP_OBJECT *eval_apply(LISP_OBJECT *lisp_list, HashMap *env);
+LISP_OBJECT *eval_prepere_args(LISP_OBJECT *lisp_list, HashMap *env);
+LISP_OBJECT *eval(LISP_OBJECT *lisp_obj, HashMap *env);
+
+#endif
diff --git a/parser.c b/parser.c
index 574d2ac..4b408ab 100644
--- a/parser.c
+++ b/parser.c
@@ -161,14 +161,3 @@ LISP_OBJECT *parser_make_nil(Token **token)
         return lisp_obj;
 }
 
-int main()
-{
-        char *test = "(display (string-append \"4*3+2=\" (number->string (+ (* 4 3) 1))))";
-
-
-        LISP_OBJECT *obj = NULL;
-
-        obj = parser_parse_str(test);
-        lisp_object_print(obj, 0);
-        lisp_object_free(obj);
-}
diff --git a/repl.c b/repl.c
new file mode 100644
index 0000000..53be144
--- /dev/null
+++ b/repl.c
@@ -0,0 +1,109 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <readline/readline.h>
+
+#include "types.h"
+#include "parser.h"
+#include "eval.h"
+
+
+LISP_OBJECT *Fadd(LISP_OBJECT *l)
+{
+        long long natural=0;
+
+        List *list = l->value.list;
+        LISP_OBJECT *a = NULL;
+        while(list)
+        {
+                a = list->ptr;
+                natural += *a->value.number_natural;
+                list = list->next;
+        }
+        LISP_OBJECT *c = lisp_object_make_number_natural(natural);
+        return c;
+}
+
+LISP_OBJECT *Fminus(LISP_OBJECT *l)
+{
+        LISP_OBJECT *a = l->value.list->ptr;
+        LISP_OBJECT *b = l->value.list->next->ptr;
+        LISP_OBJECT *c = lisp_object_make_number_natural(
+                *a->value.number_natural - *b->value.number_natural);
+        return c;
+}
+
+LISP_OBJECT *Fmul(LISP_OBJECT *l)
+{
+        LISP_OBJECT *a = l->value.list->ptr;
+        LISP_OBJECT *b = l->value.list->next->ptr;
+        LISP_OBJECT *c = lisp_object_make_number_natural(
+                *a->value.number_natural * *b->value.number_natural);
+        return c;
+}
+
+LISP_OBJECT *Fdiv(LISP_OBJECT *l)
+{
+        LISP_OBJECT *a = l->value.list->ptr;
+        LISP_OBJECT *b = l->value.list->next->ptr;
+        LISP_OBJECT *c = lisp_object_make_number_natural(
+                *a->value.number_natural / *b->value.number_natural);
+        return c;
+}
+
+LISP_OBJECT *Fplusone(LISP_OBJECT *l)
+{
+        LISP_OBJECT *a = l->value.list->ptr;
+        LISP_OBJECT *c = lisp_object_make_number_natural(
+                *a->value.number_natural+1);
+        return c;
+}
+
+
+LISP_OBJECT *READ(char *input)
+{
+        return parser_parse_str(input);
+}
+
+LISP_OBJECT *EVAL(LISP_OBJECT *input, HashMap *env)
+{
+        return eval(input, env);
+}
+
+void PRINT(LISP_OBJECT *input)
+{
+        lisp_object_print(input, 0);
+        lisp_object_free(input);
+}
+
+void rep(char *input, HashMap *env)
+{
+        PRINT(EVAL(READ(input), env));
+}
+
+
+int main()
+{
+        HashMap *env = NULL;
+        env = hash_map_push(env, "+", lisp_object_make_func(&Fadd));
+        env = hash_map_push(env, "-", lisp_object_make_func(&Fminus));
+        env = hash_map_push(env, "*", lisp_object_make_func(&Fmul));
+        env = hash_map_push(env, "/", lisp_object_make_func(&Fdiv));
+        env = hash_map_push(env, "++", lisp_object_make_func(&Fplusone));
+
+        char *input1 = NULL;
+        char *input = NULL;
+
+        while(1)
+        {
+                input = readline("JADL> ");
+                input1 = malloc(sizeof(char) * strlen(input) + 1);
+                strcpy(input1, input);
+                input1[strlen(input)] = '\0';
+
+                free(input);
+
+                rep(input1, env);
+                free(input1);
+        }
+}
diff --git a/repl.h b/repl.h
new file mode 100644
index 0000000..faf70b4
--- /dev/null
+++ b/repl.h
@@ -0,0 +1,6 @@
+#include "types.h"
+
+LISP_OBJECT PRINT(char *input);
+LISP_OBJECT EVAL(char *input);
+LISP_OBJECT READ(char *input);
+LISP_OBJECT rep(char *input);
diff --git a/types.c b/types.c
index 42359bb..4fd00d2 100644
--- a/types.c
+++ b/types.c
@@ -1,6 +1,7 @@
 #include "types.h"
 #include "memory.h"
 #include <stdio.h>
+#include <string.h>
 
 
 List *list_make(void *ptr)
@@ -174,6 +175,14 @@ LISP_OBJECT *lisp_object_make_false()
         return lisp_obj;
 }
 
+LISP_OBJECT *lisp_object_make_func(LISP_OBJECT *(*func)(LISP_OBJECT*))
+{
+        LISP_OBJECT *lisp_obj = lisp_object_make();
+        lisp_obj->type = LISP_TYPE_FUNC;
+        lisp_obj->value.func = func;
+        return lisp_obj;
+}
+
 int lisp_object_print(LISP_OBJECT *obj, int indent)
 {
         int count = 0;
@@ -230,3 +239,218 @@ int lisp_object_print(LISP_OBJECT *obj, int indent)
         }
         return count;
 }
+
+int lisp_object_cmp_types(LISP_OBJECT *a, LISP_OBJECT *b)
+{
+        if(a==NULL && b==NULL)
+                return 1;
+        else if(a==NULL || b==NULL)
+                return 0;
+        else if(a->type != b->type)
+                return 0;
+        else if(a->type == b->type)
+                return 1;
+        return 0;
+}
+
+int lisp_object_cmp(LISP_OBJECT *a, LISP_OBJECT *b)
+{
+        int is_same_type = lisp_object_cmp_types(a, b);
+        if(!is_same_type)
+                return 0;
+
+        switch(a->type)
+        {
+        case LISP_TYPE_LIST:
+                break;
+        case LISP_TYPE_NUMBER:
+                return lisp_object_cmp_numbers(a, b);
+                break;
+        case LISP_TYPE_STRING:
+                lisp_object_cmp_string(a, b);
+                break;
+        case LISP_TYPE_SYMBOL:
+                lisp_object_cmp_symbol(a, b);
+                break;
+        case LISP_TYPE_NIL:
+        case LISP_TYPE_TRUE:
+        case LISP_TYPE_FALSE:
+        case LISP_TYPE_ERROR:
+                return 1;
+                break;
+        }
+}
+
+int lisp_object_cmp_numbers(LISP_OBJECT *a, LISP_OBJECT *b) // TODO: make it works 
+{
+        int is_same_type= lisp_object_cmp_types(a, b);
+        if(!is_same_type && a->type == LISP_TYPE_NUMBER)
+                return 0;
+
+        if(a->is_decimal_point && b->is_decimal_point)
+                return *a->value.number_float == *b->value.number_float;
+        else if(a->is_decimal_point && !b->is_decimal_point)
+                return *a->value.number_float == *(double *)b->value.number_natural;
+        else if(!a->is_decimal_point && b->is_decimal_point)
+                return *(double *)a->value.number_natural == *b->value.number_float;
+        else
+                return *a->value.number_natural == *b->value.number_natural;
+}
+
+int lisp_object_cmp_symbol(LISP_OBJECT *a, LISP_OBJECT *b)
+{
+        int is_same_type= lisp_object_cmp_types(a, b);
+        if(!is_same_type && a->type == LISP_TYPE_SYMBOL)
+                return 0;
+
+        return strcmp(a->value.symbol, b->value.symbol) == 0;
+}
+
+int lisp_object_cmp_string(LISP_OBJECT *a, LISP_OBJECT *b)
+{
+        int is_same_type= lisp_object_cmp_types(a, b);
+        if(!is_same_type && a->type == LISP_TYPE_STRING)
+                return 0;
+
+        return strcmp(a->value.string, b->value.string) == 0;
+}
+
+HashMap *hash_map_make(char *key, LISP_OBJECT *value)
+{
+        return hash_map_push(NULL, key, value);
+}
+
+HashMap *hash_map_push(HashMap *hash_map, char *key, LISP_OBJECT *value)
+{
+        HashMap *is_exist = hash_map_find(hash_map, key);
+
+        if(is_exist != NULL)
+                return NULL;
+
+        HashMap *new_hash_map = jadl_malloc(sizeof(HashMap));
+
+        new_hash_map->key = jadl_malloc(sizeof(char) * strlen(key));;
+        strcpy(new_hash_map->key, key);
+
+        new_hash_map->value = value;
+        new_hash_map->prev = NULL;
+
+        if(hash_map != NULL)
+                hash_map->prev = new_hash_map;
+        new_hash_map->next = hash_map;
+
+        return new_hash_map;
+}
+
+HashMap *hash_map_reverse(HashMap *hash_map)
+{
+        HashMap *current = hash_map;
+        HashMap *next = NULL;
+        HashMap *new_hash_map = NULL;
+        while (current) {
+                next = current->next;
+
+                current->next = new_hash_map;
+                new_hash_map = current;
+
+                current = next;
+        }
+
+        return new_hash_map;
+}
+
+
+void hash_map_free(HashMap *hash_map)
+{
+        HashMap *next = NULL;
+
+        while (hash_map)
+        {
+                next = hash_map->next;
+
+                jadl_free(hash_map->key);
+                lisp_object_free(hash_map->value);
+                jadl_free(hash_map);
+
+                hash_map = next;
+        }
+}
+
+HashMap *hash_map_find(HashMap *hash_map, char* key)
+{
+        if (hash_map == NULL)
+                return NULL;
+
+        while (hash_map)
+        {
+                if(strcmp(hash_map->key, key) == 0)
+                        return hash_map;
+
+                hash_map = hash_map->next;
+        }
+
+        return NULL;
+}
+
+HashMap *hash_map_delete(HashMap *hash_map, char* key)
+{
+        HashMap *hash_map_to_free = hash_map_find(hash_map, key);
+
+        if(hash_map_to_free == NULL)
+                return hash_map;
+
+        HashMap *new_hash_map = NULL;
+
+        if(hash_map_to_free->prev == NULL)
+        {
+                new_hash_map = hash_map_to_free->next;
+                new_hash_map->prev = NULL;
+        } else
+        {
+                new_hash_map = hash_map_to_free->prev;
+                new_hash_map->next=hash_map_to_free->next;
+                if(new_hash_map->next)
+                        new_hash_map->next->prev = new_hash_map;
+        }
+
+        HashMap *prev = new_hash_map->prev;
+        while(prev)
+        {
+                new_hash_map = prev;
+                prev = prev->prev;
+        }
+
+        hash_map_to_free->next = NULL;
+        hash_map_free(hash_map_to_free);
+
+        return new_hash_map;
+}
+
+
+void hash_map_print(HashMap *hash_map)
+{
+        while (hash_map)
+        {
+                printf("-------------\n");
+                printf("HashMap->key = %s\n", hash_map->key);
+                printf("HashMap->value: \n");
+                lisp_object_print(hash_map->value, 0);
+
+                hash_map = hash_map->next;
+        }
+
+        printf("-------------\n");
+}
+
+HashMap *hash_last(HashMap *hash_map)
+{
+        HashMap *next = NULL;
+        while (hash_map)
+        {
+                next = hash_map->next;
+                if(!next)
+                        return hash_map;
+                hash_map = next;
+        }
+        return NULL;
+}
diff --git a/types.h b/types.h
index 632e283..f6e3fcf 100644
--- a/types.h
+++ b/types.h
@@ -16,6 +16,7 @@ typedef enum _LispType {
         LISP_TYPE_NIL,
         LISP_TYPE_TRUE,
         LISP_TYPE_FALSE,
+        LISP_TYPE_FUNC,
         LISP_TYPE_ERROR
 } LispType;
         
@@ -39,7 +40,7 @@ typedef struct _LispObject {
                 char *error;
                 long long *number_natural;
                 double *number_float;
-                struct _LispObject (*function)(struct _LispObject*);
+                struct _LispObject *(*func)(struct _LispObject*);
                 List *list;
                 void *ptr;
         } value;
@@ -59,7 +60,31 @@ LISP_OBJECT *lisp_object_make_error(char *str);
 LISP_OBJECT *lisp_object_make_nil();
 LISP_OBJECT *lisp_object_make_true();
 LISP_OBJECT *lisp_object_make_false();
+LISP_OBJECT *lisp_object_make_func(LISP_OBJECT *(*func)(LISP_OBJECT*));
 
 int lisp_object_print(LISP_OBJECT *obj, int indent);
 
+int lisp_object_cmp_types(LISP_OBJECT *a, LISP_OBJECT *b);
+int lisp_object_cmp(LISP_OBJECT *a, LISP_OBJECT *b);
+int lisp_object_cmp_symbol(LISP_OBJECT *a, LISP_OBJECT *b);
+int lisp_object_cmp_numbers(LISP_OBJECT *a, LISP_OBJECT *b);
+int lisp_object_cmp_string(LISP_OBJECT *a, LISP_OBJECT *b);
+
+typedef struct _HashMap
+{
+        char *key;
+        LISP_OBJECT *value;
+        struct _HashMap *prev;
+        struct _HashMap *next;
+
+} HashMap;
+
+HashMap *hash_map_make(char *key, LISP_OBJECT *value);
+HashMap *hash_map_push(HashMap *hash_map, char *key, LISP_OBJECT *value);
+HashMap *hash_map_reverse(HashMap *hash_map);
+HashMap *hash_map_find(HashMap *hash_map, char* key);
+HashMap *hash_map_delete(HashMap *hash_map, char* key);
+void hash_map_free(HashMap *hash_map);
+void hash_map_print(HashMap *hash_map);
+
 #endif