From a0457fc80d471a57f7337201b71f2758064b7158 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?202108010301-=E6=9C=B1=E9=9F=A6=E9=BE=99?=
 <13659335+zwl9955@user.noreply.gitee.com>
Date: Sat, 18 Nov 2023 13:15:46 +0000
Subject: [PATCH] update src/lexer/lexical_analyzer.l.
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Signed-off-by: 202108010301-朱韦龙 <13659335+zwl9955@user.noreply.gitee.com>
---
 src/lexer/lexical_analyzer.l | 62 +++++++++++++++++++++++++++++++++++-
 1 file changed, 61 insertions(+), 1 deletion(-)

diff --git a/src/lexer/lexical_analyzer.l b/src/lexer/lexical_analyzer.l
index c6ac08f..cde3fae 100755
--- a/src/lexer/lexical_analyzer.l
+++ b/src/lexer/lexical_analyzer.l
@@ -20,7 +20,49 @@ int pos_end;
  /******************TODO*********************/
  /****请在此补全所有flex的模式与动作  start******/
  //STUDENT TO DO
-
+/******** 运算 ********/
+\+ {pos_start = pos_end; pos_end += strlen(yytext); return ADD;}
+\- {pos_start = pos_end; pos_end += strlen(yytext); return SUB;}
+\* {pos_start = pos_end; pos_end += strlen(yytext); return MUL;}
+\/ {pos_start = pos_end; pos_end += strlen(yytext); return DIV;}
+\< {pos_start = pos_end; pos_end += strlen(yytext); return LT;}
+\<\= {pos_start = pos_end; pos_end += strlen(yytext); return LTE;}
+\> {pos_start = pos_end; pos_end += strlen(yytext); return GT;}
+\>\= {pos_start = pos_end; pos_end += strlen(yytext); return GTE;}
+\=\= {pos_start = pos_end; pos_end += strlen(yytext); return EQ;}
+\!\= {pos_start = pos_end; pos_end += strlen(yytext); return NEQ;}
+\= {pos_start = pos_end; pos_end += strlen(yytext); return ASSIN;}
+
+/******** 符号 ********/
+\; {pos_start = pos_end; pos_end += strlen(yytext); return SEMICOLON;}
+\, {pos_start = pos_end; pos_end += strlen(yytext); return COMMA;}
+\( {pos_start = pos_end; pos_end += strlen(yytext); return LPARENTHESE;}
+\) {pos_start = pos_end; pos_end += strlen(yytext); return RPARENTHESE;}
+\[ {pos_start = pos_end; pos_end += strlen(yytext); return LBRACKET;}
+\] {pos_start = pos_end; pos_end += strlen(yytext); return RBRACKET;}
+\{ {pos_start = pos_end; pos_end += strlen(yytext); return LBRACE;}
+\} {pos_start = pos_end; pos_end += strlen(yytext); return RBRACE;}
+
+/******** 关键字 ********/
+else {pos_start = pos_end; pos_end += strlen(yytext); return ELSE;}
+if {pos_start = pos_end; pos_end += strlen(yytext); return IF;}
+int {pos_start = pos_end; pos_end += strlen(yytext); return INT;}
+float {pos_start = pos_end; pos_end += strlen(yytext); return FLOAT;}
+return {pos_start = pos_end; pos_end += strlen(yytext); return RETURN;}
+void {pos_start = pos_end; pos_end += strlen(yytext); return VOID;}
+while {pos_start = pos_end; pos_end += strlen(yytext); return WHILE;}
+
+/******** ID和NUM ********/
+[a-zA-Z]+ {pos_start = pos_end; pos_end += strlen(yytext); return IDENTIFIER;} 
+[0-9]+ {pos_start = pos_end; pos_end += strlen(yytext); return INTEGER;} 
+[0-9]+\.|[0-9]*\.[0-9]+ {pos_start = pos_end; pos_end += strlen(yytext); return FLOATPOINT;}
+\[\] {pos_start = pos_end; pos_end += strlen(yytext); return ARRAY;}
+[a-zA-Z] {pos_start=pos_end;pos_end=pos_start+1;return LETTER;}
+
+/******** others ********/
+[\n] {return EOL;} 
+\/\*([^\*]|(\*)*[^\*\/])*(\*)*\*\/ {return COMMENT;} 
+[ \f\n\r\t\v] {return BLANK;}
 . {return ERROR;}
 
 
@@ -52,11 +94,29 @@ void analyzer(char* input_file, Token_Node* token_stream){
         switch(token){
             case COMMENT:
                 //STUDENT TO DO
+                 i=0;
+            len=strlen(yytext);
+            while(len--){
+              if(yytext[i]==’\n’)
+              {
+                 pos_start=1;
+                 pos_end=1;
+                 lines++;
+               }
+               else {pos_end++;}
+               i++;
+              }
+              break; 
             case BLANK:
                 //STUDENT TO DO
+                pos_start = pos_end;
+                pos_end += strlen(yytext);
                 break;
             case EOL:
                 //STUDENT TO DO
+                pos_start = 1;
+                pos_end = 1;
+                lines += strlen(yytext);
                 break;
             case ERROR:
                 printf("[ERR]: unable to analysize %s at %d line, from %d to %d\n", yytext, lines, pos_start, pos_end);
-- 
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