📄 lex.yy.cpp
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#line 2 "lex.yy.cpp"
/* A lexical scanner generated by flex */
/* Scanner skeleton version:
* $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.85 95/04/24 10:48:47 vern Exp $
*/
#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5
#include <stdio.h>
/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif
#endif
#ifdef __cplusplus
#include <stdlib.h>
#include <io.h>
#include <process.h>
/* Use prototypes in function declarations. */
#define YY_USE_PROTOS
/* The "const" storage-class-modifier is valid. */
#define YY_USE_CONST
#else /* ! __cplusplus */
#if __STDC__
#define YY_USE_PROTOS
#define YY_USE_CONST
#endif /* __STDC__ */
#endif /* ! __cplusplus */
#ifdef __TURBOC__
#pragma warn -rch
#pragma warn -use
#include <io.h>
#include <stdlib.h>
#define YY_USE_CONST
#define YY_USE_PROTOS
#endif
#ifdef YY_USE_CONST
#define yyconst const
#else
#define yyconst
#endif
#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif
/* Returned upon end-of-file. */
#define YY_NULL 0
/* Promotes a possibly negative, possibly signed char to an unsigned
* integer for use as an array index. If the signed char is negative,
* we want to instead treat it as an 8-bit unsigned char, hence the
* double cast.
*/
#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
/* Enter a start condition. This macro really ought to take a parameter,
* but we do it the disgusting crufty way forced on us by the ()-less
* definition of BEGIN.
*/
#define BEGIN yy_start = 1 + 2 *
/* Translate the current start state into a value that can be later handed
* to BEGIN to return to the state. The YYSTATE alias is for lex
* compatibility.
*/
#define YY_START ((yy_start - 1) / 2)
#define YYSTATE YY_START
/* Action number for EOF rule of a given start state. */
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
/* Special action meaning "start processing a new file". */
#define YY_NEW_FILE yyrestart( yyin )
#define YY_END_OF_BUFFER_CHAR 0
/* Size of default input buffer. */
#define YY_BUF_SIZE 16384
typedef struct yy_buffer_state *YY_BUFFER_STATE;
extern int yyleng;
extern FILE *yyin, *yyout;
#define EOB_ACT_CONTINUE_SCAN 0
#define EOB_ACT_END_OF_FILE 1
#define EOB_ACT_LAST_MATCH 2
/* The funky do-while in the following #define is used to turn the definition
* int a single C statement (which needs a semi-colon terminator). This
* avoids problems with code like:
*
* if ( condition_holds )
* yyless( 5 );
* else
* do_something_else();
*
* Prior to using the do-while the compiler would get upset at the
* "else" because it interpreted the "if" statement as being all
* done when it reached the ';' after the yyless() call.
*/
/* Return all but the first 'n' matched characters back to the input stream. */
#define yyless(n) \
do \
{ \
/* Undo effects of setting up yytext. */ \
*yy_cp = yy_hold_char; \
yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
YY_DO_BEFORE_ACTION; /* set up yytext again */ \
} \
while ( 0 )
#define unput(c) yyunput( c, yytext_ptr )
/* The following is because we cannot portably get our hands on size_t
* (without autoconf's help, which isn't available because we want
* flex-generated scanners to compile on their own).
*/
typedef unsigned int yy_size_t;
struct yy_buffer_state
{
FILE *yy_input_file;
char *yy_ch_buf; /* input buffer */
char *yy_buf_pos; /* current position in input buffer */
/* Size of input buffer in bytes, not including room for EOB
* characters.
*/
yy_size_t yy_buf_size;
/* Number of characters read into yy_ch_buf, not including EOB
* characters.
*/
int yy_n_chars;
/* Whether we "own" the buffer - i.e., we know we created it,
* and can realloc() it to grow it, and should free() it to
* delete it.
*/
int yy_is_our_buffer;
/* Whether this is an "interactive" input source; if so, and
* if we're using stdio for input, then we want to use getc()
* instead of fread(), to make sure we stop fetching input after
* each newline.
*/
int yy_is_interactive;
/* Whether we're considered to be at the beginning of a line.
* If so, '^' rules will be active on the next match, otherwise
* not.
*/
int yy_at_bol;
/* Whether to try to fill the input buffer when we reach the
* end of it.
*/
int yy_fill_buffer;
int yy_buffer_status;
#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
/* When an EOF's been seen but there's still some text to process
* then we mark the buffer as YY_EOF_PENDING, to indicate that we
* shouldn't try reading from the input source any more. We might
* still have a bunch of tokens to match, though, because of
* possible backing-up.
*
* When we actually see the EOF, we change the status to "new"
* (via yyrestart()), so that the user can continue scanning by
* just pointing yyin at a new input file.
*/
#define YY_BUFFER_EOF_PENDING 2
};
static YY_BUFFER_STATE yy_current_buffer = 0;
/* We provide macros for accessing buffer states in case in the
* future we want to put the buffer states in a more general
* "scanner state".
*/
#define YY_CURRENT_BUFFER yy_current_buffer
/* yy_hold_char holds the character lost when yytext is formed. */
static char yy_hold_char;
static int yy_n_chars; /* number of characters read into yy_ch_buf */
int yyleng;
/* Points to current character in buffer. */
static char *yy_c_buf_p = (char *) 0;
static int yy_init = 1; /* whether we need to initialize */
static int yy_start = 0; /* start state number */
/* Flag which is used to allow yywrap()'s to do buffer switches
* instead of setting up a fresh yyin. A bit of a hack ...
*/
static int yy_did_buffer_switch_on_eof;
void yyrestart YY_PROTO(( FILE *input_file ));
void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
void yy_load_buffer_state YY_PROTO(( void ));
YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
#define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )
YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *str ));
YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));
static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ));
static void yy_flex_free YY_PROTO(( void * ));
#define yy_new_buffer yy_create_buffer
#define yy_set_interactive(is_interactive) \
{ \
if ( ! yy_current_buffer ) \
yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
yy_current_buffer->yy_is_interactive = is_interactive; \
}
#define yy_set_bol(at_bol) \
{ \
if ( ! yy_current_buffer ) \
yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
yy_current_buffer->yy_at_bol = at_bol; \
}
#define YY_AT_BOL() (yy_current_buffer->yy_at_bol)
typedef unsigned char YY_CHAR;
FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
typedef int yy_state_type;
extern char *yytext;
#define yytext_ptr yytext
static yy_state_type yy_get_previous_state YY_PROTO(( void ));
static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
static int yy_get_next_buffer YY_PROTO(( void ));
static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));
/* Done after the current pattern has been matched and before the
* corresponding action - sets up yytext.
*/
#define YY_DO_BEFORE_ACTION \
yytext_ptr = yy_bp; \
yyleng = (int) (yy_cp - yy_bp); \
yy_hold_char = *yy_cp; \
*yy_cp = '\0'; \
yy_c_buf_p = yy_cp;
#define YY_NUM_RULES 55
#define YY_END_OF_BUFFER 56
static yyconst short int yy_accept[76] =
{ 0,
0, 0, 56, 54, 1, 53, 33, 54, 13, 41,
54, 43, 44, 11, 9, 50, 10, 12, 5, 5,
51, 49, 16, 14, 18, 52, 8, 47, 48, 40,
45, 39, 46, 38, 1, 20, 0, 7, 27, 34,
30, 0, 4, 25, 21, 5, 5, 23, 22, 24,
42, 3, 2, 26, 0, 6, 5, 0, 5, 0,
36, 17, 15, 19, 37, 8, 31, 32, 35, 6,
6, 5, 28, 29, 0
} ;
static yyconst int yy_ec[256] =
{ 0,
1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 2, 4, 5, 1, 1, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 17, 18, 18,
18, 18, 18, 18, 18, 18, 18, 19, 20, 21,
22, 23, 24, 1, 25, 25, 25, 25, 26, 25,
27, 27, 27, 27, 27, 28, 27, 27, 27, 27,
27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
29, 1, 30, 31, 32, 1, 25, 25, 25, 25,
26, 25, 27, 27, 27, 27, 27, 28, 27, 27,
27, 27, 27, 27, 27, 27, 27, 27, 27, 33,
27, 27, 34, 35, 36, 37, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1
} ;
static yyconst int yy_meta[38] =
{ 0,
1, 1, 2, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 3, 3, 1, 1,
1, 1, 1, 1, 3, 3, 3, 3, 1, 1,
1, 3, 3, 1, 1, 1, 1
} ;
static yyconst short int yy_base[79] =
{ 0,
0, 0, 113, 115, 108, 115, 85, 98, 80, 31,
93, 115, 115, 78, 27, 115, 29, 39, 50, 66,
115, 115, 19, 69, 34, 115, 0, 115, 115, 57,
115, 36, 115, 115, 72, 115, 68, 115, 115, 115,
115, 64, 115, 115, 115, 0, 33, 115, 115, 115,
115, 115, 115, 115, 42, 63, 30, 70, 115, 68,
32, 115, 115, 115, 26, 0, 115, 115, 115, 52,
78, 80, 115, 115, 115, 108, 111, 39
} ;
static yyconst short int yy_def[79] =
{ 0,
75, 1, 75, 75, 75, 75, 75, 76, 75, 75,
77, 75, 75, 75, 75, 75, 75, 75, 75, 19,
75, 75, 75, 75, 75, 75, 78, 75, 75, 75,
75, 75, 75, 75, 75, 75, 76, 75, 75, 75,
75, 77, 75, 75, 75, 19, 19, 75, 75, 75,
75, 75, 75, 75, 75, 75, 19, 75, 75, 75,
75, 75, 75, 75, 75, 78, 75, 75, 75, 75,
75, 75, 75, 75, 0, 75, 75, 75
} ;
static yyconst short int yy_nxt[153] =
{ 0,
4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
14, 15, 16, 17, 4, 18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 27, 27, 27, 28, 29,
30, 27, 27, 31, 32, 33, 34, 40, 45, 61,
62, 66, 49, 46, 47, 46, 47, 74, 48, 52,
50, 51, 41, 73, 53, 64, 65, 68, 70, 70,
54, 55, 75, 55, 56, 75, 57, 57, 70, 70,
69, 43, 38, 35, 55, 58, 55, 59, 67, 71,
71, 55, 60, 55, 72, 72, 70, 70, 58, 55,
63, 55, 72, 72, 71, 71, 72, 72, 75, 44,
43, 39, 38, 58, 72, 72, 36, 59, 37, 35,
37, 42, 75, 42, 3, 75, 75, 75, 75, 75,
75, 75, 75, 75, 75, 75, 75, 75, 75, 75,
75, 75, 75, 75, 75, 75, 75, 75, 75, 75,
75, 75, 75, 75, 75, 75, 75, 75, 75, 75,
75, 75
} ;
static yyconst short int yy_chk[153] =
{ 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 10, 15, 23,
23, 78, 17, 15, 15, 17, 17, 65, 15, 18,
17, 17, 10, 61, 18, 25, 25, 32, 55, 55,
18, 19, 57, 19, 19, 47, 19, 19, 70, 70,
32, 42, 37, 35, 56, 19, 56, 19, 30, 56,
56, 58, 19, 58, 60, 60, 58, 58, 56, 71,
24, 71, 60, 60, 71, 71, 72, 72, 20, 14,
11, 9, 8, 71, 72, 72, 7, 72, 76, 5,
76, 77, 3, 77, 75, 75, 75, 75, 75, 75,
75, 75, 75, 75, 75, 75, 75, 75, 75, 75,
75, 75, 75, 75, 75, 75, 75, 75, 75, 75,
75, 75, 75, 75, 75, 75, 75, 75, 75, 75,
75, 75
} ;
static yy_state_type yy_last_accepting_state;
static char *yy_last_accepting_cpos;
/* The intent behind this definition is that it'll catch
* any uses of REJECT which flex missed.
*/
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
char *yytext;
#line 1 "C_minus.lex"
#define INITIAL 0
#line 2 "C_minus.lex"
#include "stdafx.h"
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>
#include <vector>
using std::vector;
#include "lex.h"
int InsertConst(); // 插入常量，返回常量指针
int Reserve(); // 查找保留字表，若是保留字则返回其代码否则返回0
int InsertID(); // 将标识符插入符号表
int yylval;
vector<char *> ctable;
vector<char *> vtable;
int charno = 0; // 统计字符数
int lineno = 0; // 统计行数
// 关键字
keyword keywords[]={
"auto", $AUTO,
"break", $BREAK,
"case", $CASE,
"char", $CHAR,
"const", $CONST,
"continue", $CONTINUE,
"default", $DEFAULT,
"do", $DO,
"double", $DOUBLE,
"else", $ELSE,
"enum", $ENUM,
"extern", $EXTERN,
"float", $FLOAT,
"for", $FOR,
"goto", $GOTO,
"if", $IF,
"int", $INT,
"long", $LONG,
"register", $REGISTER,
"return", $RETURN,
"short", $SHORT,
"signed", $SIGNED,
"sizeof", $SIZEOF,
"static", $STATIC,
"struct", $STRUCT,
"switch", $SWITCH,
"typedef", $TYPEDEF,
"union", $UNION,
"unsigned", $UNSIGNED,
"void", $VOID,
"volatile", $VOLATILE,
"while", $WHILE,
"NULL", $NULL,
0,0,
};
#line 477 "lex.yy.cpp"
/* Macros after this point can all be overridden by user definitions in
* section 1.
*/
#ifndef YY_SKIP_YYWRAP
#ifdef __cplusplus
extern "C" int yywrap YY_PROTO(( void ));
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