diff --git a/.vscode/settings.json b/.vscode/settings.json
index a6baec2..eb82253 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -58,6 +58,7 @@
         "m_dfa_struct.h": "c",
         "compiler.h": "c",
         "stdbool.h": "c",
-        "type_traits": "c"
+        "type_traits": "c",
+        "util_cursor.h": "c"
     }
 }
\ No newline at end of file
diff --git a/src/Business/B_Tokenize.c b/src/Business/B_Tokenize.c
index c7a0ee3..f78ee08 100644
--- a/src/Business/B_Tokenize.c
+++ b/src/Business/B_Tokenize.c
@@ -10,22 +10,28 @@ void B_Tokenize_SeqMove(E_Doc *doc, const string filename, const string code, lo
 
     M_NFA_Top *nfa_top = calloc(1, sizeof(M_NFA_Top));
     M_NFA_Top_Init(nfa_top);
-    int index = 0;
 
-    while (index < size) {
+    M_Cursor cursor = (M_Cursor){0};
+    strcpy(cursor.file, filename);
+    cursor.index = 0;
+    cursor.line = 1;
+    cursor.code_size = size;
+
+    while (cursor.index < size) {
 
         NFA_Top_Status top_status = nfa_top->status;
         int line = doc->line;
 
-        int start_index = index;
-        int end_index = index;
-        char c = code[index];
-        bool isSplit = true;
+        int start_index = cursor.index;
+        int end_index = cursor.index;
+        char c = code[cursor.index];
+        cursor.is_split = true;
         char validVar = Char_IsLetterOrNumberOrUnderline(c);
 
+        // ==== Word ====
         const string word;
         if (validVar != 0) {
-            isSplit = false;
+            cursor.is_split = false;
             // 非分隔符, 读取到下个分隔符为止, 作为一个单词
             for (int i = start_index + 1; i < size; i++) {
                 char tmp = code[i];
@@ -35,15 +41,19 @@ void B_Tokenize_SeqMove(E_Doc *doc, const string filename, const string code, lo
                     break;
                 }
             }
-            word = TextSubtext(code, start_index, end_index - start_index);
+            word = String_SubString(code, start_index, end_index - start_index);
         } else {
             // 分隔符, 不读取, 直接跳过
-            word = TextSubtext(code, start_index, 1);
+            word = String_SubString(code, start_index, 1);
         }
 
-        if (top_status == NFA_Top_Status_Import) {
+        cursor.index = end_index;
+
+        if (top_status == NFA_Top_Status_Guess) {
+            D_NFA_Top_Process(nfa_top, code, word, &cursor);
+        } else if (top_status == NFA_Top_Status_Import) {
             M_DFA_Import *dfa_import = nfa_top->dfa_import;
-            end_index = D_DFA_Import_Process(dfa_import, filename, line, isSplit, word, end_index, code, size);
+            D_DFA_Import_Process(dfa_import, code, word, &cursor);
             if (dfa_import->is_done) {
                 E_Doc_Import_Add(doc, dfa_import->import);
                 D_NFA_Top_Enter(nfa_top);
@@ -62,14 +72,6 @@ void B_Tokenize_SeqMove(E_Doc *doc, const string filename, const string code, lo
             //     E_Doc_StaticFunc_Add(doc, fsm_func->function);
             //     D_NFA_Top_Enter(nfa_top);
             // }
-        } else if (top_status == NFA_Top_Status_Guess) {
-            D_NFA_Top_Process(nfa_top, filename, line, isSplit, word, code, size);
-        }
-
-        if (!isSplit) {
-            index = end_index;
-        } else {
-            index = end_index + 1;
         }
 
         if (c == KW_NEWLINE) {
diff --git a/src/Business/B_Tokenize.h b/src/Business/B_Tokenize.h
index f953c7d..36c66a3 100644
--- a/src/Business/B_Tokenize.h
+++ b/src/Business/B_Tokenize.h
@@ -1,7 +1,6 @@
 #ifndef B_TOKENIZE_H__
 #define B_TOKENIZE_H__
 #include "import.h"
-#include <raylib.h>
 
 void B_Tokenize_SeqMove(E_Doc *doc, const string filename, const string code, long size);
 
diff --git a/src/Business/D_DFA_Import.c b/src/Business/D_DFA_Import.c
index 14ba2e1..4b4b2be 100644
--- a/src/Business/D_DFA_Import.c
+++ b/src/Business/D_DFA_Import.c
@@ -1,5 +1,6 @@
 #include "D_DFA_Import.h"
 #include "D_NFA_Top.h"
+#include "Util_Cursor.h"
 #include "import.h"
 
 void D_DFA_Import_Free(M_DFA_Import *fsm) {
@@ -10,45 +11,40 @@ void D_DFA_Import_Enter(M_DFA_Import *fsm) {
     PLogNA("enter top import\r\n");
 }
 
-int D_DFA_Import_Process(M_DFA_Import *fsm, const string file, int line, bool is_split, const string word, int index, const string code, long size) {
+void D_DFA_Import_Process(M_DFA_Import *fsm, const string code, const string word, M_Cursor *cursor) {
 
-    if (!is_split) {
-        return index;
-    }
-    
-    if (Char_IsEmptySymbol(word[0])) {
-        return index;
-    }
-
-    char split = word[0];
-    if (split == KW_QUOTE) {
-        // "
-        int right_index = String_CutBetweenSameChars(index, code, size, KW_QUOTE);
-        if (right_index != -1) {
-            const string value = String_SubString(code, index + 1, right_index - index - 1); // 去掉两边的引号
-            fsm->import = Factory_CreateImport(value, ImportType_Quote);
-            index = right_index;
-        } else {
-            PLog("err word:%s\r\n", word);
-            PFailed(file, line, ERR_UNDIFINDED_ERR);
-        }
-    } else if (split == KW_LEFT_ANGLE_BRACKET) {
-        // <
-        int right_index = String_CutBetweenDifferentChars(index, code, size, KW_LEFT_ANGLE_BRACKET, KW_RIGHT_ANGLE_BRACKET);
-        if (right_index != -1) {
-            const string value = String_SubString(code, index + 1, right_index - index - 1); // 去掉两边的尖括号
-            fsm->import = Factory_CreateImport(value, ImportType_ANGLE_BRACKET);
-            index = right_index;
+    if (cursor->is_split) {
+        char split = word[0];
+        if (split == KW_QUOTE) {
+            // "
+            int right_index = String_CutBetweenSameChars(cursor->index, code, cursor->code_size, KW_QUOTE);
+            if (right_index != -1) {
+                const string value = String_SubString(code, cursor->index + 1, right_index - cursor->index - 1); // 去掉两边的引号
+                fsm->import = Factory_CreateImport(value, ImportType_Quote);
+                cursor->index = right_index + 1;
+            } else {
+                PLog("err word:%s\r\n", word);
+                PFailed(cursor->file, cursor->line, ERR_UNDIFINDED_ERR);
+            }
+        } else if (split == KW_LEFT_ANGLE_BRACKET) {
+            // <
+            int right_index = String_CutBetweenDifferentChars(cursor->index, code, cursor->code_size, KW_LEFT_ANGLE_BRACKET, KW_RIGHT_ANGLE_BRACKET);
+            if (right_index != -1) {
+                const string value = String_SubString(code, cursor->index + 1, right_index - cursor->index - 1); // 去掉两边的尖括号
+                fsm->import = Factory_CreateImport(value, ImportType_ANGLE_BRACKET);
+                cursor->index = right_index + 1;
+            } else {
+                PLog("err word:%s\r\n", word);
+                PFailed(cursor->file, cursor->line, ERR_UNDIFINDED_ERR);
+            }
+        } else if (split == KW_SEMICOLON) {
+            // ;
+            ++cursor->index;
+            fsm->is_done = true;
         } else {
-            PLog("err word:%s\r\n", word);
-            PFailed(file, line, ERR_UNDIFINDED_ERR);
+            Util_Cursor_DealEmpty(cursor, code, word);
         }
+    } else {
+        PFailed(cursor->file, cursor->line, ERR_UNDIFINDED_ERR);
     }
-
-    if (split == KW_SEMICOLON) {
-        // ;
-        fsm->is_done = true;
-    }
-
-    return index;
 }
\ No newline at end of file
diff --git a/src/Business/D_DFA_Import.h b/src/Business/D_DFA_Import.h
index 8cc44bb..d845658 100644
--- a/src/Business/D_DFA_Import.h
+++ b/src/Business/D_DFA_Import.h
@@ -5,6 +5,6 @@
 
 void D_DFA_Import_Free(M_DFA_Import *fsm);
 void D_DFA_Import_Enter(M_DFA_Import *fsm);
-int D_DFA_Import_Process(M_DFA_Import *fsm, const string file, int line, bool is_split, const string word, int index, const string code, long size);
+void D_DFA_Import_Process(M_DFA_Import *fsm, const string code, const string word, M_Cursor *cursor);
 
 #endif
\ No newline at end of file
diff --git a/src/Business/D_DFA_Struct.c b/src/Business/D_DFA_Struct.c
index 51bc6a0..86408b4 100644
--- a/src/Business/D_DFA_Struct.c
+++ b/src/Business/D_DFA_Struct.c
@@ -19,7 +19,7 @@ int Phase_Name_Process(M_DFA_Struct *dfa_struct, const string file, int line, bo
             dfa_struct->nested_level += 1;
             dfa_struct->is_done = true;
         } else {
-            if (Char_IsEmptySymbol(split)) {
+            if (Char_IsEmptySymbolButNewLine(split)) {
                 // ' ' '\t' '\n' '\r'
                 return index;
             }
diff --git a/src/Business/D_NFA_Top.c b/src/Business/D_NFA_Top.c
index 7895ae6..22ff100 100644
--- a/src/Business/D_NFA_Top.c
+++ b/src/Business/D_NFA_Top.c
@@ -2,6 +2,7 @@
 #include "D_DFA_Func.h"
 #include "D_DFA_Import.h"
 #include "D_DFA_Struct.h"
+#include "Util_Cursor.h"
 
 void D_NFA_Top_Free(M_NFA_Top *nfa_top) {
     M_NFA_Top_Free(nfa_top);
@@ -12,16 +13,13 @@ void D_NFA_Top_Enter(M_NFA_Top *nfa_top) {
     E_Guess_Init(&nfa_top->guess);
 }
 
-void D_NFA_Top_Process(M_NFA_Top *nfa_top, const string file, int line, bool is_split, const string word, const string code, long size) {
+void D_NFA_Top_Process(M_NFA_Top *nfa_top, const string code, const string word, M_Cursor *cursor) {
 
-    if (is_split) {
-        if (Char_IsEmptySymbol(word[0])) {
-            return;
-        }
-    }
+    // import <stdio.h>;
+    // import "raylib.h";
 
     E_Guess *guess = &nfa_top->guess;
-    if (!is_split) {
+    if (!cursor->is_split) {
         if (strcmp(word, KW_IMPORT) == 0) {
             // import
             nfa_top->status = NFA_Top_Status_Import;
@@ -45,17 +43,26 @@ void D_NFA_Top_Process(M_NFA_Top *nfa_top, const string file, int line, bool is_
             guess->is_const = true;
         } else if (String_IsAccess(word)) {
             // access: public, private...
-            E_Guess_SetAccess(guess, file, line, word);
+            E_Guess_SetAccess(guess, cursor->file, cursor->line, word);
         } else {
             // push word
-            E_Guess_PushWord(guess, file, line, word);
+            E_Guess_PushWord(guess, cursor->file, cursor->line, word);
         }
     } else {
-        if (word[0] == KW_SEMICOLON) {
+        char split = word[0];
+        if (split == KW_EQUAL) {
+            // = assign stm
+            ++cursor->index;
+            PLogNA("TODO assign stm\r\n");
+        } else if (split == KW_SEMICOLON) {
             // ; field end
-        } else if (word[0] == KW_RIGHT_BRACE) {
+            ++cursor->index;
+            PLogNA("TODO field end\r\n");
+        } else if (split == KW_RIGHT_BRACE) {
             // }
-            PFailed(file, line, ERR_FUNCTION_OR_FIELD_NOT_END);
+            PFailed(cursor->file, cursor->line, ERR_FUNCTION_OR_FIELD_NOT_END);
+        } else {
+            Util_Cursor_DealEmpty(cursor, code, word);
         }
     }
 }
\ No newline at end of file
diff --git a/src/Business/D_NFA_Top.h b/src/Business/D_NFA_Top.h
index 9954f24..75e71ba 100644
--- a/src/Business/D_NFA_Top.h
+++ b/src/Business/D_NFA_Top.h
@@ -5,6 +5,6 @@
 
 void D_NFA_Top_Free(M_NFA_Top *nfa_top);
 void D_NFA_Top_Enter(M_NFA_Top *nfa_top);
-void D_NFA_Top_Process(M_NFA_Top *nfa_top, const string file, int line, bool is_split, const string word, const string code, long size);
+void D_NFA_Top_Process(M_NFA_Top *nfa_top, const string code, const string word, M_Cursor *cursor);
 
 #endif
\ No newline at end of file
diff --git a/src/Business/Util_Cursor.c b/src/Business/Util_Cursor.c
new file mode 100644
index 0000000..0f3c482
--- /dev/null
+++ b/src/Business/Util_Cursor.c
@@ -0,0 +1,26 @@
+#include "Util_Cursor.h"
+
+void Util_Cursor_DealEmpty(M_Cursor *cursor, const string code, const string word) {
+    if (!cursor->is_split) {
+        PFailed(cursor->file, cursor->line, ERR_UNDIFINDED_ERR);
+        return;
+    }
+    char split = word[0];
+    if (Char_IsEmptySymbolButNewLine(split)) {
+        // ' ' '\t'
+        ++cursor->index;
+    } else if (split == KW_NEWLINE_R) {
+        // '\r'
+        if (code[cursor->index + 1] == KW_NEWLINE) {
+            // '\r\n'
+            ++cursor->index;
+            ++cursor->line;
+        }
+    } else if (split == KW_NEWLINE) {
+        // '\n'
+        ++cursor->index;
+        ++cursor->line;
+    } else {
+        PFailed(cursor->file, cursor->line, ERR_UNDIFINDED_ERR);
+    }
+}
\ No newline at end of file
diff --git a/src/Business/Util_Cursor.h b/src/Business/Util_Cursor.h
new file mode 100644
index 0000000..46e27c8
--- /dev/null
+++ b/src/Business/Util_Cursor.h
@@ -0,0 +1,8 @@
+#ifndef Util_Cursor_H__
+#define Util_Cursor_H__
+
+#include "import.h"
+
+void Util_Cursor_DealEmpty(M_Cursor *cursor, const string code, const string word);
+
+#endif
\ No newline at end of file
diff --git a/src/Entities_Source/M_Cursor.c b/src/Entities_Source/M_Cursor.c
new file mode 100644
index 0000000..bf18342
--- /dev/null
+++ b/src/Entities_Source/M_Cursor.c
@@ -0,0 +1 @@
+#include "M_Cursor.h"
diff --git a/src/Entities_Source/M_Cursor.h b/src/Entities_Source/M_Cursor.h
new file mode 100644
index 0000000..84ba110
--- /dev/null
+++ b/src/Entities_Source/M_Cursor.h
@@ -0,0 +1,15 @@
+#ifndef M_CURSOR_H__
+#define M_CURSOR_H__
+
+#include "import.h"
+
+typedef struct M_Cursor {
+    char file[FILENAME_MAX];
+    char word[RULE_VAR_NAME_LEN];
+    bool is_split;
+    int line;
+    int index;
+    int code_size; // readonly
+} M_Cursor;
+
+#endif
\ No newline at end of file
diff --git a/src/Entities_Source/export.h b/src/Entities_Source/export.h
index 33267ec..2195fd3 100644
--- a/src/Entities_Source/export.h
+++ b/src/Entities_Source/export.h
@@ -5,6 +5,7 @@
 #include "E_Function.h"
 #include "E_Guess.h"
 #include "E_Struct.h"
+#include "M_Cursor.h"
 #include "M_DFA_Func.h"
 #include "M_DFA_Import.h"
 #include "M_DFA_Struct.h"
diff --git a/src/Generic/StringCommon.c b/src/Generic/StringCommon.c
index e58092d..be127e3 100644
--- a/src/Generic/StringCommon.c
+++ b/src/Generic/StringCommon.c
@@ -390,8 +390,8 @@ char Char_IsQuote(char c) {
     }
 }
 
-char Char_IsEmptySymbol(char c) {
-    return c == KW_SPACE || c == KW_NEWLINE || c == KW_NEWLINE_R || c == KW_TABLE;
+char Char_IsEmptySymbolButNewLine(char c) {
+    return c == KW_SPACE || c == KW_TABLE;
 }
 
 char Char_IsSplitSymbol(char c) {
diff --git a/src/Generic/StringCommon.h b/src/Generic/StringCommon.h
index 36d924f..a588570 100644
--- a/src/Generic/StringCommon.h
+++ b/src/Generic/StringCommon.h
@@ -15,7 +15,7 @@ int String_CutBetweenDifferentChars(int start_index, const string word, long siz
 bool String_IsAccess(const string word);
 char Char_IsBracket(char c);
 char Char_IsQuote(char c);
-char Char_IsEmptySymbol(char c);
+char Char_IsEmptySymbolButNewLine(char c);
 char Char_IsSplitSymbol(char c);
 char Char_IsLetter(char c);
 char Char_IsLetterOrUnderline(char c);
diff --git a/src/win64.c b/src/win64.c
index 10c14b2..663bf68 100644
--- a/src/win64.c
+++ b/src/win64.c
@@ -3,6 +3,7 @@
 #include "Business/D_DFA_Import.c"
 #include "Business/D_DFA_Struct.c"
 #include "Business/D_NFA_Top.c"
+#include "Business/Util_Cursor.c"
 
 #include "Entities_Source/E_Doc.c"
 #include "Entities_Source/E_Expression.c"
@@ -12,6 +13,7 @@
 #include "Entities_Source/E_Import.c"
 #include "Entities_Source/E_Statement.c"
 #include "Entities_Source/E_Struct.c"
+#include "Entities_Source/M_Cursor.c"
 #include "Entities_Source/M_DFA_ConstString.c"
 #include "Entities_Source/M_DFA_Func.c"
 #include "Entities_Source/M_DFA_Import.c"
@@ -22,7 +24,7 @@
 
 #include "Helper/FileHelper.c"
 
-#include "Context.c"
 #include "Compiler.c"
+#include "Context.c"
 #include "Factory.c"
 #include "Generic/StringCommon.c"