From 52bb9d67c340a9210097b2ca0a4bb9524ee323d5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=85=A7?=
 <13707725+Xu-Huii@user.noreply.gitee.com>
Date: Wed, 15 Nov 2023 15:22:17 +0000
Subject: [PATCH] =?UTF-8?q?update=20src/lexer/lexical=5Fanalyzer.l.=20?=
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Signed-off-by: 徐慧 <13707725+Xu-Huii@user.noreply.gitee.com>
---
 src/lexer/lexical_analyzer.l | 72 +++++++++++++++++++++++++++++-------
 1 file changed, 58 insertions(+), 14 deletions(-)

diff --git a/src/lexer/lexical_analyzer.l b/src/lexer/lexical_analyzer.l
index c6ac08f..4c292ab 100755
--- a/src/lexer/lexical_analyzer.l
+++ b/src/lexer/lexical_analyzer.l
@@ -1,8 +1,8 @@
-%option noyywrap
+option noyywrap
 %{
 /*****************声明和选项设置  begin*****************/
 #include <stdio.h>
-#include <stdlib.h>
+#include% <stdlib.h>
 
 #include "lexical_analyzer.h"
 
@@ -20,13 +20,52 @@ 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+=pos_start+strlen(yytext);return IDENTIFIER;}
+[0-9]+ {pos_start=pos_end;pos_end+=pos_start+strlen(yytext);return INTEGER;}
+[0-9]+\.[0-9]+ {pos_start=pos_end;pos_end+=pos_start+strlen(yytext);return FLOATPOINT;}
+\[\] {pos_start=pos_end;pos_end+=strlen(yytext);return ARRAY;}
+[a-zA-Z] {pos_start=pos_end;pos_end+=strlen(yytext);return LETTER;}
+
+/******** others ********/
+[\n]+ {pos_start = 1;pos_end = 1;lines+=strlen(yytext);return EOL;}
+\/\*([^\*]|(\*)*[^\*\/])*(\*)*\*\/ {return COMMENT;}
+[ \f\n\r\t\v] {pos_start = pos_end;pos_end+=strlen(yytext);return BLANK;}
 . {return ERROR;}
-
-
-
-
  /****请在此补全所有flex的模式与动作  end******/
+
 %%
 /****************C代码 start*************/
 
@@ -47,16 +86,23 @@ void analyzer(char* input_file, Token_Node* token_stream){
 
     int token;
     int index = 0;
-
-    while(token = yylex()){
+	while(token = yylex()){
         switch(token){
             case COMMENT:
-                //STUDENT TO DO
+                int len = strlen(yytext);
+                for(int i=0;i<len;i++){
+                    if(yytext[i]=='\n') {
+                        lines++;
+                        pos_end = 1;	//pos_start由pos_end得到，这里就不需要置1了
+                    }
+                    else pos_end++;
+                }
+                break;
             case BLANK:
-                //STUDENT TO DO
                 break;
             case EOL:
-                //STUDENT TO DO
+                lines++;
+                pos_end = 1;
                 break;
             case ERROR:
                 printf("[ERR]: unable to analysize %s at %d line, from %d to %d\n", yytext, lines, pos_start, pos_end);
@@ -81,6 +127,4 @@ void analyzer(char* input_file, Token_Node* token_stream){
     return;
 }
 
-
-
 /****************C代码 end*************/
-- 
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