feature(main): loading file + bug fixes

structure improvement

20 files changed, 453 insertions, 124 deletions

diff --git a/Makefile b/Makefile
index 376f3b8..f9c5906 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 BIN = build/engine
-SRC = source/engine/engine_entry.c
+SRC = source/engine/engine.c
 CC = clang
 CFLAGS = -Wall -Wextra -Wfloat-equal -Wswitch-default -Wswitch-enum \
          -Wno-unused-parameter -Wno-implicit-fallthrough -Wno-unused-function -g -Werror
diff --git a/source/base/base_include.h b/source/base/base_include.h
index 0b0f256..40ae5ea 100755
--- a/source/base/base_include.h
+++ b/source/base/base_include.h
@@ -20,11 +20,8 @@
 
 #ifdef BASE_UNITY
 
-#include "base_mem.c"
 #include "base_arena.c"
 #include "base_stack.c"
-#include "base_test.c"
-#include "base_string.c"
 
 #endif
 #endif
diff --git a/source/base/base_mem.c b/source/base/base_mem.c
index f20ba39..e69de29 100644
--- a/source/base/base_mem.c
+++ b/source/base/base_mem.c
@@ -1,17 +0,0 @@
-internal inline b8
-is_pow(umm x)
-{
-    return (x & (x - 1)) == 0;
-}
-
-internal inline u64
-align(u64 pointer, umm alignment)
-{
-    if ((alignment & (alignment - 1)) == 0)
-    {
-        return pointer;
-    }
-
-    return (pointer + alignment - 1) & ~(alignment - 1);
-}
-
diff --git a/source/base/base_mem.h b/source/base/base_mem.h
index 945f0ce..2778fce 100644
--- a/source/base/base_mem.h
+++ b/source/base/base_mem.h
@@ -5,4 +5,22 @@
 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
 
+internal inline b8
+is_pow(umm x)
+{
+    return (x & (x - 1)) == 0;
+}
+
+internal inline u64
+align(u64 pointer, umm alignment)
+{
+    if ((alignment & (alignment - 1)) == 0)
+    {
+        return pointer;
+    }
+
+    return (pointer + alignment - 1) & ~(alignment - 1);
+}
+
+
 #endif
diff --git a/source/base/base_os.h b/source/base/base_os.h
index ce9acae..ec0a3de 100644
--- a/source/base/base_os.h
+++ b/source/base/base_os.h
@@ -9,6 +9,45 @@ print(const char *str)
     write(STDOUT_FILENO, str, len);
 }
 
-#define print(Format) print(Format)
+internal string8
+load_file(const char *path)
+{
+    string8 result = {0};
+    struct stat sbuf = {0};
+    int err = 0;
+    i32 file = open(path, O_RDONLY);
+
+    if(file)
+    {
+
+        if(file != -1)
+        {
+            err = fstat(file, &sbuf);
+            check(err != -1);
+
+            result.size = (u64)sbuf.st_size;
+
+            if(result.size !=  0)
+            {
+                result.data = (u8 *)mmap(0,
+                                         result.size,
+                                         PROT_READ,
+                                         MAP_PRIVATE,
+                                         file,
+                                         0);
+
+                check(result.data != MAP_FAILED);
+            }
+
+            close(file);
+        }
+        else
+        {
+           // TODO(nasr): logging
+        }
+
+    }
+    return result;
+}
 
 #endif /* BASE_OS_H */
diff --git a/source/base/base_string.c b/source/base/base_string.c
deleted file mode 100644
index 9d09914..0000000
--- a/source/base/base_string.c
+++ /dev/null
@@ -1,63 +0,0 @@
-internal b8
-compare_string(string c1, string c2)
-{
-    if (c1.size != c2.size)
-    {
-        return 0;
-    }
-
-    for (u64 index = 0; index < c1.size; ++index)
-    {
-        if (c1.data[index] != c2.data[index])
-        {
-            return 0;
-        }
-    }
-
-    return 1;
-}
-
-internal b8
-compare_u8(u8 *c1, u8 *c2, u64 len)
-{
-    if (sizeof(c1) != len || sizeof(c2) != len) 
-    {
-        return 0;
-    }
-
-    if (sizeof(*c1) != sizeof(*c2))
-    {
-        return 0;
-    }
-
-    for (u64 word_idx = 0; word_idx <= sizeof(*c1); ++word_idx)
-    {
-        if (*c1 != *c2)
-        {
-            return 0;
-        }
-
-        ++c1;
-        ++c2;
-    }
-
-    return 1;
-}
-
-internal u64
-to_u64(u8 *buf, umm len)
-{
-    u64 value = 0;
-
-    for (umm buffer_idx = 0; buffer_idx < len; ++buffer_idx)
-    {
-        u8 c = buf[buffer_idx];
-        if (c < '0' || c > '9')
-        {
-            break;
-        }
-        value = value * 10 + (c - '0');
-    }
-
-    return value;
-}
diff --git a/source/base/base_string.h b/source/base/base_string.h
index 5f875e0..941dc53 100644
--- a/source/base/base_string.h
+++ b/source/base/base_string.h
@@ -1,15 +1,46 @@
 #ifndef BASE_STRING_H
 #define BASE_STRING_H
 
-#define _StringCast (string)
-#define StringCast { .data (u8 *)(string), .size = (sizeof((string)) - 1)}
-#define PushString (Arena, Size) StringCast{.data = PushArray((arena), PushStruct(u8), (Size)), .size = (u64)(Size)} 
+#include <string.h>
 
-typedef struct string string;
-struct string
+#define StringLit(string) \
+    (string8){ .data = (u8 *)(string), .size = (sizeof(string) - 1) }
+
+ #define PushString(arena, size) \
+    (string8){ (u8 *)PushArray((arena), u8, (size)), (u64)(size) }
+
+typedef struct string8 string8;
+struct string8
 {
-    u8 *data;
-    u64 size;
+    u8  *data;
+    u64  size;
 };
 
+internal b8
+string8_cmp(string8 a, string8 b)
+{
+    if (a.size != b.size) return 0;
+    return (b8)(memcmp(a.data, b.data, a.size) == 0);
+}
+
+internal u64
+string8_to_u64(u8 *buf, umm len)
+{
+    u64 value = 0;
+    for (umm i = 0; i < len; ++i)
+    {
+        u8 c = buf[i];
+        if (c < '0' || c > '9') break;
+        value = value * 10 + (c - '0');
+    }
+    return value;
+}
+
+internal void
+string8_append_char(string8 *buf, u8 c)
+{
+    buf->data[buf->size] = c;
+    buf->size += 1;
+}
+
 #endif /* BASE_STRING_H */
diff --git a/source/engine/#engine_repl.c# b/source/engine/#engine_repl.c#
deleted file mode 100644
index be43645..0000000
--- a/source/engine/#engine_repl.c#
+++ /dev/null
@@ -1,7 +0,0 @@
-
-internal void
-tokenize(str8 )
-{
-
-
-}
diff --git a/source/engine/engine.c b/source/engine/engine.c
new file mode 100644
index 0000000..609101e
--- /dev/null
+++ b/source/engine/engine.c
@@ -0,0 +1,34 @@
+#define BASE_UNITY
+#include "../base/base_include.h"
+
+#include "../lexer/lexer.h"
+#include "../lexer/lexer.c"
+
+#include "../parser/parser.h"
+#include "../parser/parser.c"
+
+#include "../repl/repl.h"
+#include "../repl/repl.c"
+
+int main(int c, char **v)
+{
+    mem_arena *global_arena = arena_create(MiB(1));
+
+    unused(c);
+    unused(v);
+
+    string8 buffer = PushString(global_arena, 5);
+    unused(buffer);
+
+
+    for (;;)
+    {
+        print("reading user input...");
+        // TODO(nasr): design a repl system
+
+        sleep(1);
+    }
+
+}
+
+
diff --git a/source/engine/engine_entry.c b/source/engine/engine_entry.c
deleted file mode 100644
index 8973dee..0000000
--- a/source/engine/engine_entry.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#define BASE_UNITY
-#include "../base/base_include.h"
-
-#include "engine_repl.h"
-#include "engine_repl.c"
-
-int main(int c, char **v)
-{
-    unused(c);
-    unused(v);
-
-    for (;;)
-    {
-
-    }
-}
diff --git a/source/engine/engine_repl.c b/source/engine/engine_repl.c
deleted file mode 100644
index ead6c7b..0000000
--- a/source/engine/engine_repl.c
+++ /dev/null
@@ -1,8 +0,0 @@
-
-internal tokens *
-tokenize(string buffer)
-{
-
-
-
-}
diff --git a/source/lexer/lexer.c b/source/lexer/lexer.c
new file mode 100644
index 0000000..60a5cda
--- /dev/null
+++ b/source/lexer/lexer.c
@@ -0,0 +1,8 @@
+internal token *
+tokenize(string8 buffer)
+{
+
+    // TODO(nasr): tokenize the user input
+
+    return NULL;
+}
diff --git a/source/lexer/lexer.h b/source/lexer/lexer.h
new file mode 100644
index 0000000..86f8427
--- /dev/null
+++ b/source/lexer/lexer.h
@@ -0,0 +1,23 @@
+#ifndef ENGINE_LEXER_H
+#define ENGINE_LEXER_H
+
+typedef enum token_type token_type;
+enum token_type
+{
+    // first 255 tokens  for ascii characters
+    TOKEN_UNDEFINED = 255,
+    TOKEN_IDENTIFIER,
+    TOKEN_VALUE,
+
+};
+
+typedef struct token token;
+struct token
+{
+    string8 lexeme;
+    token_type type;
+
+};
+
+
+#endif /* ENGINE_LEXER_H */
diff --git a/source/engine/engine_repl.h b/source/parser/parser.c
index eb20524..4c57345 100644
--- a/source/engine/engine_repl.h
+++ b/source/parser/parser.c
@@ -13,5 +13,4 @@ struct btree
 
 };
 
-
 #endif /* ENGINE_H */
diff --git a/source/parser/parser.h b/source/parser/parser.h
new file mode 100644
index 0000000..4c57345
--- /dev/null
+++ b/source/parser/parser.h
@@ -0,0 +1,16 @@
+#ifndef ENGINE_REPL_H
+#define ENGINE_REPL_H
+
+typedef struct node node;
+struct node
+{
+
+};
+
+typedef struct btree btree;
+struct btree
+{
+
+};
+
+#endif /* ENGINE_H */
diff --git a/source/repl/repl.c b/source/repl/repl.c
new file mode 100644
index 0000000..4c57345
--- /dev/null
+++ b/source/repl/repl.c
@@ -0,0 +1,16 @@
+#ifndef ENGINE_REPL_H
+#define ENGINE_REPL_H
+
+typedef struct node node;
+struct node
+{
+
+};
+
+typedef struct btree btree;
+struct btree
+{
+
+};
+
+#endif /* ENGINE_H */
diff --git a/source/repl/repl.h b/source/repl/repl.h
new file mode 100644
index 0000000..4c57345
--- /dev/null
+++ b/source/repl/repl.h
@@ -0,0 +1,16 @@
+#ifndef ENGINE_REPL_H
+#define ENGINE_REPL_H
+
+typedef struct node node;
+struct node
+{
+
+};
+
+typedef struct btree btree;
+struct btree
+{
+
+};
+
+#endif /* ENGINE_H */
diff --git a/source/base/base_test.c b/source/storage/csv_reader.c
index e69de29..e69de29 100644
--- a/source/base/base_test.c
+++ b/source/storage/csv_reader.c
diff --git a/source/storage/csv_reader.h b/source/storage/csv_reader.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/source/storage/csv_reader.h
diff --git a/tags b/tags
new file mode 100644
index 0000000..1f8a45d
--- /dev/null
+++ b/tags
@@ -0,0 +1,243 @@
+!_TAG_EXTRA_DESCRIPTION anonymous       /Include tags for non-named objects like lambda/
+!_TAG_EXTRA_DESCRIPTION fileScope       /Include tags of file scope/
+!_TAG_EXTRA_DESCRIPTION pseudo  /Include pseudo tags/
+!_TAG_EXTRA_DESCRIPTION subparser       /Include tags generated by subparsers/
+!_TAG_FIELD_DESCRIPTION epoch   /the last modified time of the input file (only for F\/file kind tag)/
+!_TAG_FIELD_DESCRIPTION file    /File-restricted scoping/
+!_TAG_FIELD_DESCRIPTION input   /input file/
+!_TAG_FIELD_DESCRIPTION name    /tag name/
+!_TAG_FIELD_DESCRIPTION pattern /pattern/
+!_TAG_FIELD_DESCRIPTION typeref /Type and name of a variable or typedef/
+!_TAG_FIELD_DESCRIPTION!C++     name    /aliased names/
+!_TAG_FILE_FORMAT       2       /extended format; --format=1 will not append ;" to lines/
+!_TAG_FILE_SORTED       1       /0=unsorted, 1=sorted, 2=foldcase/
+!_TAG_KIND_DESCRIPTION!C        d,macro /macro definitions/
+!_TAG_KIND_DESCRIPTION!C        e,enumerator    /enumerators (values inside an enumeration)/
+!_TAG_KIND_DESCRIPTION!C        f,function      /function definitions/
+!_TAG_KIND_DESCRIPTION!C        g,enum  /enumeration names/
+!_TAG_KIND_DESCRIPTION!C        h,header        /included header files/
+!_TAG_KIND_DESCRIPTION!C        m,member        /struct, and union members/
+!_TAG_KIND_DESCRIPTION!C        s,struct        /structure names/
+!_TAG_KIND_DESCRIPTION!C        t,typedef       /typedefs/
+!_TAG_KIND_DESCRIPTION!C        u,union /union names/
+!_TAG_KIND_DESCRIPTION!C        v,variable      /variable definitions/
+!_TAG_KIND_DESCRIPTION!C++      M,module        /modules/
+!_TAG_KIND_DESCRIPTION!C++      P,partition     /partitions/
+!_TAG_KIND_DESCRIPTION!C++      c,class /classes/
+!_TAG_KIND_DESCRIPTION!C++      d,macro /macro definitions/
+!_TAG_KIND_DESCRIPTION!C++      e,enumerator    /enumerators (values inside an enumeration)/
+!_TAG_KIND_DESCRIPTION!C++      f,function      /function definitions/
+!_TAG_KIND_DESCRIPTION!C++      g,enum  /enumeration names/
+!_TAG_KIND_DESCRIPTION!C++      h,header        /included header files/
+!_TAG_KIND_DESCRIPTION!C++      m,member        /class, struct, and union members/
+!_TAG_KIND_DESCRIPTION!C++      n,namespace     /namespaces/
+!_TAG_KIND_DESCRIPTION!C++      s,struct        /structure names/
+!_TAG_KIND_DESCRIPTION!C++      t,typedef       /typedefs/
+!_TAG_KIND_DESCRIPTION!C++      u,union /union names/
+!_TAG_KIND_DESCRIPTION!C++      v,variable      /variable definitions/
+!_TAG_KIND_DESCRIPTION!Make     I,makefile      /makefiles/
+!_TAG_KIND_DESCRIPTION!Make     m,macro /macros/
+!_TAG_KIND_DESCRIPTION!Make     t,target        /targets/
+!_TAG_KIND_DESCRIPTION!Markdown S,subsection    /level 2 sections/
+!_TAG_KIND_DESCRIPTION!Markdown T,l4subsection  /level 4 sections/
+!_TAG_KIND_DESCRIPTION!Markdown c,chapter       /chapters/
+!_TAG_KIND_DESCRIPTION!Markdown h,hashtag       /hashtags/
+!_TAG_KIND_DESCRIPTION!Markdown n,footnote      /footnotes/
+!_TAG_KIND_DESCRIPTION!Markdown s,section       /sections/
+!_TAG_KIND_DESCRIPTION!Markdown t,subsubsection /level 3 sections/
+!_TAG_KIND_DESCRIPTION!Markdown u,l5subsection  /level 5 sections/
+!_TAG_OUTPUT_EXCMD      mixed   /number, pattern, mixed, or combineV2/
+!_TAG_OUTPUT_FILESEP    slash   /slash or backslash/
+!_TAG_OUTPUT_MODE       u-ctags /u-ctags or e-ctags/
+!_TAG_OUTPUT_VERSION    1.1     /current.age/
+!_TAG_PARSER_VERSION!C  1.1     /current.age/
+!_TAG_PARSER_VERSION!C++        2.2     /current.age/
+!_TAG_PARSER_VERSION!Make       1.1     /current.age/
+!_TAG_PARSER_VERSION!Markdown   1.1     /current.age/
+!_TAG_PATTERN_LENGTH_LIMIT      96      /0 for no limit/
+!_TAG_PROC_CWD  /home/nasr/tb_db/       //
+!_TAG_PROGRAM_AUTHOR    Universal Ctags Team    //
+!_TAG_PROGRAM_NAME      Universal Ctags /Derived from Exuberant Ctags/
+!_TAG_PROGRAM_URL       https://ctags.io/       /official site/
+!_TAG_PROGRAM_VERSION   6.2.1   /v6.2.1/
+!_TAG_ROLE_DESCRIPTION!C!function       foreigndecl     /declared in foreign languages/
+!_TAG_ROLE_DESCRIPTION!C!header local   /local header/
+!_TAG_ROLE_DESCRIPTION!C!header system  /system header/
+!_TAG_ROLE_DESCRIPTION!C!macro  undef   /undefined/
+!_TAG_ROLE_DESCRIPTION!C!struct foreigndecl     /declared in foreign languages/
+!_TAG_ROLE_DESCRIPTION!C++!header       exported        /exported with "exported imported ..."/
+!_TAG_ROLE_DESCRIPTION!C++!header       imported        /imported with "imported ..."/
+!_TAG_ROLE_DESCRIPTION!C++!header       local   /local header/
+!_TAG_ROLE_DESCRIPTION!C++!header       system  /system header/
+!_TAG_ROLE_DESCRIPTION!C++!macro        undef   /undefined/
+!_TAG_ROLE_DESCRIPTION!C++!module       imported        /imported with "imported ..."/
+!_TAG_ROLE_DESCRIPTION!C++!module       partOwner       /used for specifying a partition/
+!_TAG_ROLE_DESCRIPTION!C++!partition    imported        /imported with "imported ..."/
+!_TAG_ROLE_DESCRIPTION!Make!makefile    included        /included/
+!_TAG_ROLE_DESCRIPTION!Make!makefile    optional        /optionally included/
+$(BIN)  Makefile        /^$(BIN): $(SRC)$/;"    t
+ARENA_ALIGN     source/base/base_mem.h  /^#define ARENA_ALIGN /;"       d
+Align   source/base/base_arena.h        /^#define Align(/;"     d
+BASE_ARENA_H    source/base/base_arena.h        /^#define BASE_ARENA_H$/;"      d
+BASE_H  source/base/base.h      /^#define BASE_H$/;"    d
+BASE_INCLUDE_H  source/base/base_include.h      /^#define BASE_INCLUDE_H$/;"    d
+BASE_IO_H       source/base/base_io.h   /^#define BASE_IO_H$/;" d
+BASE_MEM_H      source/base/base_mem.h  /^#define BASE_MEM_H$/;"        d
+BASE_OS_H       source/base/base_os.h   /^#define BASE_OS_H$/;" d
+BASE_STRING_H   source/base/base_string.h       /^#define BASE_STRING_H$/;"     d
+BASE_TEST_H     source/base/base_test.h /^#define BASE_TEST_H$/;"       d
+BASE_UNITY      source/engine/engine_main.c     /^#define BASE_UNITY$/;"        d       file:
+BIN     Makefile        /^BIN = build\/engine$/;"       m
+BLUE    source/base/base_test.h /^#define BLUE /;"      d
+BUFF_DEFAULT    source/base/base.h      /^#define BUFF_DEFAULT /;"      d
+BUFF_LARGE      source/base/base.h      /^#define BUFF_LARGE /;"        d
+BUFF_SMALL      source/base/base.h      /^#define BUFF_SMALL /;"        d
+CC      Makefile        /^CC = clang$/;"        m
+CFLAGS  Makefile        /^CFLAGS = -Wall -Wextra -Wfloat-equal -Wswitch-default -Wswitch-enum \\$/;"    m
+DEPRECATED      source/base/base.h      /^#define DEPRECATED /;"        d
+ENGINE_LEXER_H  source/engine/engine_lexer.h    /^#define ENGINE_LEXER_H$/;"    d
+ENGINE_REPL_H   source/engine/engine_parser.c   /^#define ENGINE_REPL_H$/;"     d       file:
+ENGINE_REPL_H   source/engine/engine_parser.h   /^#define ENGINE_REPL_H$/;"     d
+ENGINE_REPL_H   source/engine/engine_repl.c     /^#define ENGINE_REPL_H$/;"     d       file:
+ENGINE_REPL_H   source/engine/engine_repl.h     /^#define ENGINE_REPL_H$/;"     d
+ERR_INVALID     source/base/base.h      /^#define ERR_INVALID /;"       d
+ERR_IO  source/base/base.h      /^#define ERR_IO /;"    d
+ERR_OK  source/base/base.h      /^#define ERR_OK /;"    d
+ERR_PARSE       source/base/base.h      /^#define ERR_PARSE /;" d
+ERR_PERM        source/base/base.h      /^#define ERR_PERM /;"  d
+FALSE   source/base/base.h      /^#define FALSE /;"     d
+GREEN   source/base/base_test.h /^#define GREEN /;"     d
+GiB     source/base/base.h      /^#define GiB(/;"       d
+HEADER_H        source/base/bash_hash.h /^#define HEADER_H$/;"  d
+KiB     source/base/base.h      /^#define KiB(/;"       d
+LEN     source/base/base_test.h /^#define LEN(/;"       d
+MAX     source/base/base_mem.h  /^#define MAX(/;"       d
+MIN     source/base/base_mem.h  /^#define MIN(/;"       d
+MemCpy  source/base/base.h      /^#define MemCpy(/;"    d
+MemSet  source/base/base.h      /^#define MemSet(/;"    d
+MiB     source/base/base.h      /^#define MiB(/;"       d
+NIL     source/base/base.h      /^#define NIL /;"       d
+PATH_MAX_LEN    source/base/base.h      /^#define PATH_MAX_LEN /;"      d
+PushArray       source/base/base_arena.h        /^#define PushArray(/;" d
+PushString      source/base/base_string.h       /^ #define PushString(/;"       d
+PushStruct      source/base/base_arena.h        /^#define PushStruct(/;"        d
+RED     source/base/base_test.h /^#define RED /;"       d
+RESET   source/base/base_test.h /^#define RESET /;"     d
+SRC     Makefile        /^SRC = source\/engine\/engine_main.c$/;"       m
+STACK_H source/base/base_stack.h        /^#define STACK_H$/;"   d
+StringLit       source/base/base_string.h       /^#define StringLit(/;" d
+TOKEN_IDENTIFIER        source/engine/engine_lexer.h    /^    TOKEN_IDENTIFIER,$/;"     e       enum:token_type
+TOKEN_UNDEFINED source/engine/engine_lexer.h    /^    TOKEN_UNDEFINED = 255,$/;"        e       enum:token_type
+TOKEN_VALUE     source/engine/engine_lexer.h    /^    TOKEN_VALUE,$/;"  e       enum:token_type
+TRUE    source/base/base.h      /^#define TRUE /;"      d
+align   source/base/base_mem.h  /^align(u64 pointer, umm alignment)$/;" f       typeref:typename:internal u64
+arena   source/base/base_arena.h        /^    mem_arena *arena;$/;"     m       struct:temp_arena       typeref:typename:mem_arena *
+arena_alloc     source/base/base_arena.c        /^arena_alloc(mem_arena *arena, u64 size)$/;"   f       typeref:typename:internal void *
+arena_clear     source/base/base_arena.c        /^arena_clear(mem_arena *arena)$/;"     f       typeref:typename:internal void
+arena_create    source/base/base_arena.c        /^arena_create(u64 capacity)$/;"        f       typeref:typename:internal mem_arena *
+arena_destroy   source/base/base_arena.c        /^arena_destroy(mem_arena *arena)$/;"   f       typeref:typename:internal void
+arena_pop       source/base/base_arena.c        /^arena_pop(mem_arena *arena, u64 size)$/;"     f       typeref:typename:internal void
+arena_pop_to    source/base/base_arena.c        /^arena_pop_to(mem_arena *arena, u64 pos)$/;"   f       typeref:typename:internal void
+arena_resize    source/base/base_arena.c        /^arena_resize(mem_arena *arena, void *old_memory, u64 new_size, u64 old_size)$/;"      f       typeref:typename:internal mem_arena *
+arena_resize_align      source/base/base_arena.c        /^arena_resize_align(mem_arena *arena, void *old_memory, u64 new_size, u64 old_size, umm alignment/;"   f       typeref:typename:internal mem_arena *
+b16     source/base/base.h      /^typedef i16 b16;$/;"  t       typeref:typename:i16
+b32     source/base/base.h      /^typedef i32 b32;$/;"  t       typeref:typename:i32
+b8      source/base/base.h      /^typedef u8  b8;$/;"   t       typeref:typename:u8
+base_position   source/base/base_arena.h        /^    u8 *base_position;$/;"    m       struct:mem_arena        typeref:typename:u8 *
+base_position   source/base/base_stack.h        /^    u8 *base_position;$/;"    m       struct:mem_stack        typeref:typename:u8 *
+breakpoint      source/base/base.h      /^#define breakpoint /;"        d
+btree   source/engine/engine_parser.c   /^struct btree$/;"      s       file:
+btree   source/engine/engine_parser.c   /^typedef struct btree btree;$/;"       t       typeref:struct:btree    file:
+btree   source/engine/engine_parser.h   /^struct btree$/;"      s
+btree   source/engine/engine_parser.h   /^typedef struct btree btree;$/;"       t       typeref:struct:btree
+btree   source/engine/engine_repl.c     /^struct btree$/;"      s       file:
+btree   source/engine/engine_repl.c     /^typedef struct btree btree;$/;"       t       typeref:struct:btree    file:
+btree   source/engine/engine_repl.h     /^struct btree$/;"      s
+btree   source/engine/engine_repl.h     /^typedef struct btree btree;$/;"       t       typeref:struct:btree
+calculate_padding       source/base/base_stack.c        /^calculate_padding(u64 pointer, u8 alignment, u64 header_size)$/;"     f       typeref:typename:internal u8
+capacity        source/base/base_arena.h        /^    u64 capacity;$/;" m       struct:mem_arena        typeref:typename:u64
+capacity        source/base/base_stack.h        /^    u64 capacity;$/;" m       struct:mem_stack        typeref:typename:u64
+check   source/base/base_test.h /^#define check(/;"     d
+checkpoint      source/base/base_test.h /^#define checkpoint /;"        d
+checkpoint_end_output   source/base/base_test.h /^#define checkpoint_end_output /;"     d
+checkpoint_output       source/base/base_test.h /^#define checkpoint_output /;" d
+clean   Makefile        /^clean:$/;"    t
+current_offset  source/base/base_stack.h        /^    u64 current_offset;$/;"   m       struct:mem_stack        typeref:typename:u64
+current_position        source/base/base_arena.h        /^    u64 current_position;$/;" m       struct:mem_arena        typeref:typename:u64
+data    source/base/base_string.h       /^    u8  *data;$/;"    m       struct:string8  typeref:typename:u8 *
+database engine in c    README.md       /^# database engine in c$/;"    c
+f32     source/base/base.h      /^typedef float  f32;$/;"       t       typeref:typename:float
+f64     source/base/base.h      /^typedef double f64;$/;"       t       typeref:typename:double
+generate_hash   source/base/base_hash.c /^generate_hash()$/;"   f       typeref:typename:internal u64
+global_variable source/base/base.h      /^#define global_variable /;"   d
+hash    source/base/bash_hash.h /^typedef struct hash hash;$/;" t       typeref:struct:hash
+hash_map        source/base/bash_hash.h /^struct hash_map $/;"  s
+hash_map        source/base/bash_hash.h /^typedef struct hash_map hash_map;$/;" t       typeref:struct:hash_map
+header  source/base/base_stack.h        /^    mem_stack_header *header;$/;"     m       struct:mem_stack        typeref:typename:mem_stack_header *
+i16     source/base/base.h      /^typedef int16_t i16;$/;"      t       typeref:typename:int16_t
+i32     source/base/base.h      /^typedef int32_t i32;$/;"      t       typeref:typename:int32_t
+i64     source/base/base.h      /^typedef int64_t i64;$/;"      t       typeref:typename:int64_t
+i8      source/base/base.h      /^typedef int8_t  i8;$/;"       t       typeref:typename:int8_t
+input_read      source/base/base_io.h   /^input_read()$/;"      f       typeref:typename:internal void
+internal        source/base/base.h      /^#define internal /;"  d
+is_pow  source/base/base_mem.h  /^is_pow(umm x)$/;"     f       typeref:typename:internal b8
+lexeme  source/engine/engine_lexer.h    /^    string8 lexeme;$/;"       m       struct:token    typeref:typename:string8
+local_persist   source/base/base.h      /^#define local_persist /;"     d
+main    source/engine/engine_main.c     /^int main(int c, char **v)$/;" f       typeref:typename:int
+mem_arena       source/base/base_arena.h        /^struct mem_arena$/;"  s
+mem_arena       source/base/base_arena.h        /^typedef struct mem_arena  mem_arena;$/;"      t       typeref:struct:mem_arena
+mem_stack       source/base/base_stack.h        /^struct mem_stack$/;"  s
+mem_stack       source/base/base_stack.h        /^typedef struct mem_stack mem_stack;$/;"       t       typeref:struct:mem_stack
+mem_stack_header        source/base/base_stack.h        /^struct mem_stack_header$/;"   s
+mem_stack_header        source/base/base_stack.h        /^typedef struct mem_stack_header mem_stack_header;$/;" t       typeref:struct:mem_stack_header
+node    source/engine/engine_parser.c   /^struct node$/;"       s       file:
+node    source/engine/engine_parser.c   /^typedef struct node node;$/;" t       typeref:struct:node     file:
+node    source/engine/engine_parser.h   /^struct node$/;"       s
+node    source/engine/engine_parser.h   /^typedef struct node node;$/;" t       typeref:struct:node
+node    source/engine/engine_repl.c     /^struct node$/;"       s       file:
+node    source/engine/engine_repl.c     /^typedef struct node node;$/;" t       typeref:struct:node     file:
+node    source/engine/engine_repl.h     /^struct node$/;"       s
+node    source/engine/engine_repl.h     /^typedef struct node node;$/;" t       typeref:struct:node
+padding source/base/base_stack.h        /^    u8 padding;$/;"   m       struct:mem_stack_header typeref:typename:u8
+previous_offset source/base/base_stack.h        /^    u8 previous_offset;$/;"   m       struct:mem_stack_header typeref:typename:u8
+previous_position       source/base/base_arena.h        /^    u64 previous_position;$/;"        m       struct:mem_arena        typeref:typename:u64
+print   source/base/base_os.h   /^#define print(Format) print(/;"       d
+print   source/base/base_os.h   /^print(const char *str)$/;"    f       typeref:typename:internal void
+read_only       source/base/base.h      /^#define read_only /;" d
+read_only       source/base/base.h      /^#define read_only$/;" d
+run     Makefile        /^run:$/;"      t
+show    source/base/base_test.h /^#define show /;"      d
+size    source/base/base_string.h       /^    u64  size;$/;"    m       struct:string8  typeref:typename:u64
+smm     source/base/base.h      /^typedef intptr_t  smm;$/;"    t       typeref:typename:intptr_t
+stack_create    source/base/base_stack.c        /^stack_create(u64 capacity)$/;"        f       typeref:typename:internal mem_stack *
+stack_destroy   source/base/base_stack.c        /^stack_destroy(mem_stack *stack)$/;"   f       typeref:typename:internal void
+stack_pop       source/base/base_stack.c        /^stack_pop(mem_stack *stack, void *pointer)$/;"        f       typeref:typename:internal void
+stack_pop_all   source/base/base_stack.c        /^stack_pop_all(mem_stack *stack)$/;"   f       typeref:typename:internal void
+stack_push      source/base/base_stack.c        /^stack_push(mem_stack *stack, u64 size)$/;"    f       typeref:typename:internal void *
+stack_push_align        source/base/base_stack.c        /^stack_push_align(mem_stack *stack, u64 size, u8 alignment)$/;"        f       typeref:typename:internal mem_stack *
+stack_resize_align      source/base/base_stack.c        /^stack_resize_align(mem_stack *stack, void *pointer, u64 old_size, u64 new_size, u8 alignment)$/;"     f       typeref:typename:internal mem_stack *
+start_position  source/base/base_arena.h        /^    u64        start_position;$/;"    m       struct:temp_arena       typeref:typename:u64
+string8 source/base/base_string.h       /^struct string8$/;"    s
+string8 source/base/base_string.h       /^typedef struct string8 string8;$/;"   t       typeref:struct:string8
+string8_append_char     source/base/base_string.h       /^string8_append_char(string8 *buf, u8 c)$/;"   f       typeref:typename:internal void
+string8_cmp     source/base/base_string.h       /^string8_cmp(string8 a, string8 b)$/;" f       typeref:typename:internal b8
+string8_to_u64  source/base/base_string.h       /^string8_to_u64(u8 *buf, umm len)$/;"  f       typeref:typename:internal u64
+temp_arena      source/base/base_arena.h        /^struct temp_arena$/;" s
+temp_arena      source/base/base_arena.h        /^typedef struct temp_arena temp_arena;$/;"     t       typeref:struct:temp_arena
+temp_arena_begin        source/base/base_arena.c        /^temp_arena_begin(mem_arena *arena)$/;"        f       typeref:typename:internal temp_arena
+temp_arena_end  source/base/base_arena.c        /^temp_arena_end(temp_arena temp)$/;"   f       typeref:typename:internal void
+temp_breakpoint source/base/base.h      /^#define temp_breakpoint /;"   d
+test    source/base/base_test.h /^#define test(/;"      d
+token   source/engine/engine_lexer.h    /^struct token$/;"      s
+token   source/engine/engine_lexer.h    /^typedef struct token token;$/;"       t       typeref:struct:token
+token_type      source/engine/engine_lexer.h    /^enum token_type$/;"   g
+token_type      source/engine/engine_lexer.h    /^typedef enum token_type token_type;$/;"       t       typeref:enum:token_type
+tokenize        source/engine/engine_lexer.c    /^tokenize(string8 buffer)$/;"  f       typeref:typename:internal token *
+type    source/engine/engine_lexer.h    /^    token_type type;$/;"      m       struct:token    typeref:typename:token_type
+u16     source/base/base.h      /^typedef uint16_t u16;$/;"     t       typeref:typename:uint16_t
+u32     source/base/base.h      /^typedef uint32_t u32;$/;"     t       typeref:typename:uint32_t
+u64     source/base/base.h      /^typedef uint64_t u64;$/;"     t       typeref:typename:uint64_t
+u8      source/base/base.h      /^typedef uint8_t  u8;$/;"      t       typeref:typename:uint8_t
+umm     source/base/base.h      /^typedef uintptr_t umm;$/;"    t       typeref:typename:uintptr_t
+unused  source/base/base.h      /^#define unused(/;"    d
+write_int       source/base/base_test.h /^write_int(i32 num)$/;"        f       typeref:typename:internal void