【2025-11-16】现有代码上传

This commit is contained in:
hym816
2025-11-16 21:04:02 +08:00
parent 6e114d8735
commit d71eb4576e
28 changed files with 11524 additions and 0 deletions

210
mini_c.l Normal file
View File

@@ -0,0 +1,210 @@
D [0-9]
L [a-zA-Z_]
H [a-fA-F0-9]
E ([Ee][+-]?{D}+)
P ([Pp][+-]?{D}+)
FS (f|F|l|L)
IS ((u|U)|(u|U)?(l|L|ll|LL)|(l|L|ll|LL)(u|U))
%option yylineno
%{
#include <stdio.h>
#include <string.h>
#include "ast.h"
#include "mini_c.tab.hpp"
#define SET_SVAL yylval.sval = strdup(yytext)
void count(void);
void comment(void);
int column = 0;
int check_type(void);
void error(const char*); /* 已在 .l 末尾实现 */
extern int yylineno;
#define YY_USER_ACTION \
yylloc.first_line = yylineno; \
yylloc.first_column = column; \
yylloc.last_line = yylineno; \
yylloc.last_column = column + yyleng - 1; \
column += yyleng;
%}
%%
"/*" { comment(); }
"auto" { count(); return(AUTO); }
"_Bool" { count(); return(BOOL); }
"break" { count(); return(BREAK); }
"case" { count(); return(CASE); }
"char" { count(); return(CHAR); }
"_Complex" { count(); return(COMPLEX); }
"const" { count(); return(CONST); }
"continue" { count(); return(CONTINUE); }
"default" { count(); return(DEFAULT); }
"do" { count(); return(DO); }
"double" { count(); return(DOUBLE); }
"else" { count(); return(ELSE); }
"enum" { count(); return(ENUM); }
"extern" { count(); return(EXTERN); }
"float" { count(); return(FLOAT); }
"for" { count(); return(FOR); }
"goto" { count(); return(GOTO); }
"if" { count(); return(IF); }
"_Imaginary" { count(); return(IMAGINARY); }
"inline" { count(); return(INLINE); }
"int" { count(); return(INT); }
"long" { count(); return(LONG); }
"register" { count(); return(REGISTER); }
"restrict" { count(); return(RESTRICT); }
"return" { count(); return(RETURN); }
"short" { count(); return(SHORT); }
"signed" { count(); return(SIGNED); }
"sizeof" { count(); return(SIZEOF); }
"static" { count(); return(STATIC); }
"struct" { count(); return(STRUCT); }
"switch" { count(); return(SWITCH); }
"typedef" { count(); return(TYPEDEF); }
"union" { count(); return(UNION); }
"unsigned" { count(); return(UNSIGNED); }
"void" { count(); return(VOID); }
"volatile" { count(); return(VOLATILE); }
"while" { count(); return(WHILE); }
{L}({L}|{D})* { count(); SET_SVAL; return(check_type()); }
0[xX]{H}+{IS}? { count(); SET_SVAL; return(CONSTANT); }
0[0-7]*{IS}? { count(); SET_SVAL; return(CONSTANT); }
[1-9]{D}*{IS}? { count(); SET_SVAL; return(CONSTANT); }
L?'((\\.)|[^\\'\n])+' { count(); SET_SVAL; return(CONSTANT); }
{D}+{E}{FS}? { count(); SET_SVAL; return(CONSTANT); }
{D}*\.{D}+{E}?{FS}? { count(); SET_SVAL; return(CONSTANT); }
{D}+\.{D}*{E}?{FS}? { count(); SET_SVAL; return(CONSTANT); }
0[xX]{H}+{P}{FS}? { count(); SET_SVAL; return(CONSTANT); }
0[xX]{H}*\.{H}+{P}?{FS}? { count(); SET_SVAL; return(CONSTANT); }
0[xX]{H}+\.{H}*{P}?{FS}? { count(); SET_SVAL; return(CONSTANT); }
L?\"((\\.)|[^\\"\n])*\" { count(); SET_SVAL; return(STRING_LITERAL); }
"..." { count(); return(ELLIPSIS); }
">>=" { count(); return(RIGHT_ASSIGN); }
"<<=" { count(); return(LEFT_ASSIGN); }
"+=" { count(); return(ADD_ASSIGN); }
"-=" { count(); return(SUB_ASSIGN); }
"*=" { count(); return(MUL_ASSIGN); }
"/=" { count(); return(DIV_ASSIGN); }
"%=" { count(); return(MOD_ASSIGN); }
"&=" { count(); return(AND_ASSIGN); }
"^=" { count(); return(XOR_ASSIGN); }
"|=" { count(); return(OR_ASSIGN); }
">>" { count(); return(RIGHT_OP); }
"<<" { count(); return(LEFT_OP); }
"++" { count(); return(INC_OP); }
"--" { count(); return(DEC_OP); }
"->" { count(); return(PTR_OP); }
"&&" { count(); return(AND_OP); }
"||" { count(); return(OR_OP); }
"<=" { count(); return(LE_OP); }
">=" { count(); return(GE_OP); }
"==" { count(); return(EQ_OP); }
"!=" { count(); return(NE_OP); }
";" { count(); return(';'); }
(\{|<%) { count(); return('{'); }
(\}|%>) { count(); return('}'); }
"," { count(); return(','); }
":" { count(); return(':'); }
"=" { count(); return('='); }
"(" { count(); return('('); }
")" { count(); return(')'); }
(\[|<:) { count(); return('['); }
(\]|:>) { count(); return(']'); }
"." { count(); return('.'); }
"&" { count(); return('&'); }
"!" { count(); return('!'); }
"~" { count(); return('~'); }
"-" { count(); return('-'); }
"+" { count(); return('+'); }
"*" { count(); return('*'); }
"/" { count(); return('/'); }
"%" { count(); return('%'); }
"<" { count(); return('<'); }
">" { count(); return('>'); }
"^" { count(); return('^'); }
"|" { count(); return('|'); }
"?" { count(); return('?'); }
[\p\t\v\n\f] { count(); }
. { /* Add code to complain about unmatched characters */ }
%%
int yywrap(void)
{
return 1;
}
void comment(void)
{
char c, prev = 0;
while ((c = yyinput()) != 0) /* (EOF maps to 0) */
{
if (c == '/' && prev == '*')
return;
prev = c;
}
error("unterminated comment");
}
/* int column = 0; */
void count(void)
{
int i;
for (i = 0; yytext[i] != '\0'; i++)
if (yytext[i] == '\n')
{
column = 0;
}
else if (yytext[i] == '\t')
{
column += 8 - (column % 8);
}
else
{
column++;
}
ECHO;
}
int check_type(void)
{
/*
* pseudo code --- this is what it should check
*
* if (yytext == type_name)
* return TYPE_NAME;
*
* return IDENTIFIER;
*/
/*
* it actually will only return IDENTIFIER
*/
return IDENTIFIER;
}