version 1.1, 1999/12/09 22:44:56 |
version 1.17, 2015/08/27 03:03:34 |
|
|
/* -*- mode: C; coding: euc-japan -*- */ |
/* -*- mode: C; coding: euc-japan -*- */ |
/* $OpenXM$ */ |
/* $OpenXM: OpenXM/src/ox_toolkit/parse.c,v 1.16 2005/07/20 17:48:03 ohara Exp $ */ |
|
|
/* OX expression, CMO expression パーサ */ |
/* |
|
This module is a parser for OX/CMO expressions. |
|
Some commnets are written in Japanese by using the EUC-JP coded |
|
character set. |
|
*/ |
|
|
#include <stdio.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
#include <sys/param.h> |
|
#include <setjmp.h> |
#include <setjmp.h> |
#include "oxtag.h" |
#include <ctype.h> |
#include "ox.h" |
#if !defined(_MSC_VER) |
|
#include <sys/param.h> |
|
#endif |
|
|
|
#include "ox_toolkit.h" |
#include "parse.h" |
#include "parse.h" |
|
|
/* --- 構文解析部 --- */ |
/* --- Parser --- */ |
/* (重要)セマンティックスについての注意. |
/* Remarks for semantics. |
CMO_LIST, CMO_STRING は、あらかじめ与えられた要素の個数を無視する. |
CMO_LIST, CMO_STRING は、あらかじめ与えられた要素の個数を無視する. |
CMO_MONOMIAL32 は無視しない. (つまりおかしいときは構文エラーになる) |
CMO_MONOMIAL32 は無視しない. (つまりおかしいときは構文エラーになる) |
*/ |
*/ |
|
|
/* parse.c, lex.c では, Lisp 表現された CMO 文字列を読み込み, |
/* |
|
parse.c では, Lisp 表現された CMO 文字列を読み込み, |
バイト列を出力する. 中間表現として、cmo 構造体を利用する. |
バイト列を出力する. 中間表現として、cmo 構造体を利用する. |
parse() はトークンの列から cmo 構造体を生成し、そのポインタを返す. |
parse() はトークンの列から cmo 構造体を生成し、そのポインタを返す. |
*/ |
重要なことはパーサ(の各サブルーチン)は |
|
|
/* 重要なことはパーサ(の各サブルーチン)は |
|
常にトークンをひとつ先読みしていると言うことである. |
常にトークンをひとつ先読みしていると言うことである. |
*/ |
*/ |
|
|
|
|
char *sym; |
char *sym; |
} yylval; |
} yylval; |
|
|
/* pflag_cmo_addrev がセットされていれば、厳密には CMO expression では |
/* |
ないもの, 例えば (CMO_STRING, "hello") も CMO に変換される. */ |
If `pflag_cmo_addrev' sets, then we admit extended CMO expressions. |
|
For example, (CMO_STRING, "hello") is not a real CMO expression |
|
but it is admitted. |
|
*/ |
|
static int pflag_cmo_addrev = 1; |
|
|
static int pflag_cmo_addrev = 1; /* CMO の省略記法を許すか否かのフラグ */ |
/* definitions of local functions */ |
|
static void init_parser(char *s); |
/* 関数の宣言 */ |
static cmo *parse(); |
static int parse_error(char *s); |
static void parse_error(char *s); |
static int parse_lf(); |
static void parse_right_parenthesis(); |
static int parse_right_parenthesis(); |
static void parse_left_parenthesis(); |
static int parse_left_parenthesis(); |
static void parse_comma(); |
static int parse_comma(); |
static mpz_ptr parse_mpz_integer(); |
static int parse_integer(); |
static int parse_integer(); |
static char *parse_string(); |
static char *parse_string(); |
static cmo *parse_cmo_null(); |
static cmo *parse_cmo_null(); |
static cmo *parse_cmo_int32(); |
static cmo *parse_cmo_int32(); |
Line 67 static int parse_sm(); |
|
Line 77 static int parse_sm(); |
|
static ox *parse_ox(); |
static ox *parse_ox(); |
static ox *parse_ox_command(); |
static ox *parse_ox_command(); |
static ox *parse_ox_data(); |
static ox *parse_ox_data(); |
|
static void init_lex(char *s); |
|
static int lex(); |
|
|
|
/* Parsing a Lisp-style expression of CMO. */ |
|
cmo *ox_parse_lisp(char *s) |
|
{ |
|
return (s != NULL && strlen(s) > 0)? init_parser(s), parse(): NULL; |
|
} |
|
|
static int is_token_cmo(int token) |
static int is_token_cmo(int token) |
{ |
{ |
return (token >= MIN_T_CMO && token < MAX_T_CMO) || token == TOKEN(CMO_ERROR2); |
return (token >= MIN_T_CMO && token < MAX_T_CMO) || token == TOKEN(CMO_ERROR2); |
Line 85 static int is_token_ox(int token) |
|
Line 103 static int is_token_ox(int token) |
|
|
|
static jmp_buf env_parse; |
static jmp_buf env_parse; |
|
|
/* 構文解析に失敗したことを意味する. */ |
/* This is a parsing fault. */ |
static int parse_error(char *s) |
static void parse_error(char *s) |
{ |
{ |
fprintf(stderr, "syntax error: %s\n", s); |
ox_printf("syntax error: %s\n", s); |
longjmp(env_parse, 1); |
longjmp(env_parse, 1); |
} |
} |
|
|
/* この部分は書き換え予定. */ |
static void setflag_parse(int flag) |
cmo *parse() |
|
{ |
{ |
cmo *m; |
pflag_cmo_addrev = flag; |
|
} |
|
|
if (setjmp(env_parse) != 0) { |
static void init_parser(char *s) |
return NULL; /* 構文解析に失敗したら NULL を返す. */ |
{ |
} |
setflag_parse(PFLAG_ADDREV); |
|
init_lex(s); |
|
} |
|
|
do{ |
static cmo *parse() |
|
{ |
|
cmo *m = NULL; |
|
if (setjmp(env_parse) == 0) { |
token = lex(); |
token = lex(); |
}while (token == '\n'); |
if (token == '(') { |
|
token = lex(); |
if (token == '(') { |
if (is_token_cmo(token)) { |
token = lex(); |
m = parse_cmo(); |
if (is_token_cmo(token)) { |
}else if(is_token_ox(token)) { |
m = parse_cmo(); |
m = parse_ox(); |
}else if(is_token_ox(token)) { |
}else { |
m = parse_ox(); |
parse_error("invalid symbol."); |
}else { |
} |
parse_error("invalid symbol."); |
|
} |
} |
parse_lf(); |
|
return m; |
|
} |
} |
return NULL; |
return m; |
} |
} |
|
|
/* トークンを先読みしない(重要). */ |
|
static int parse_lf() |
|
{ |
|
if (token != '\n') { |
|
parse_error("no new line."); |
|
} |
|
return 0; |
|
} |
|
|
|
|
|
static ox *parse_ox() |
static ox *parse_ox() |
{ |
{ |
ox *m = NULL; |
ox *m = NULL; |
Line 183 static int parse_sm() |
|
Line 193 static int parse_sm() |
|
return sm_code; |
return sm_code; |
} |
} |
|
|
|
|
/* 正しい入力ならば, parse_cmo を呼ぶ時点で, token には |
|
TOKEN(CMO_xxx), TOKEN(OX_xxx) のいずれかがセットされている. */ |
|
static cmo *parse_cmo() |
static cmo *parse_cmo() |
{ |
{ |
cmo *m = NULL; |
cmo *m = NULL; |
Line 249 static cmo *parse_cmo() |
|
Line 256 static cmo *parse_cmo() |
|
return m; |
return m; |
} |
} |
|
|
static int parse_left_parenthesis() |
static void parse_left_parenthesis() |
{ |
{ |
if (token != '(') { |
if (token != '(') { |
parse_error("no left parenthesis."); |
parse_error("no left parenthesis."); |
Line 257 static int parse_left_parenthesis() |
|
Line 264 static int parse_left_parenthesis() |
|
token = lex(); |
token = lex(); |
} |
} |
|
|
static int parse_right_parenthesis() |
static void parse_right_parenthesis() |
{ |
{ |
if (token != ')') { |
if (token != ')') { |
parse_error("no right parenthesis."); |
parse_error("no right parenthesis."); |
Line 265 static int parse_right_parenthesis() |
|
Line 272 static int parse_right_parenthesis() |
|
token = lex(); |
token = lex(); |
} |
} |
|
|
static int parse_comma() |
static void parse_comma() |
{ |
{ |
if (token != ',') { |
if (token != ',') { |
parse_error("no comma."); |
parse_error("no comma."); |
Line 273 static int parse_comma() |
|
Line 280 static int parse_comma() |
|
token = lex(); |
token = lex(); |
} |
} |
|
|
|
static mpz_ptr new_mpz_set_str(char *s) |
|
{ |
|
mpz_ptr z = MALLOC(sizeof(mpz_t)); |
|
mpz_init_set_str(z, s, 10); |
|
return z; |
|
} |
|
|
|
static mpz_ptr my_mpz_neg(mpz_ptr src) |
|
{ |
|
mpz_ptr z = MALLOC(sizeof(mpz_t)); |
|
mpz_init(z); |
|
mpz_neg(z, src); |
|
return z; |
|
} |
|
|
|
static mpz_ptr parse_mpz_integer() |
|
{ |
|
int sign = 1; |
|
mpz_ptr val; |
|
|
|
if (token == '+') { |
|
token = lex(); |
|
}else if (token == '-') { |
|
sign = -1; |
|
token = lex(); |
|
} |
|
|
|
if (token != T_DIGIT) { |
|
parse_error("no integer."); |
|
} |
|
val = new_mpz_set_str(yylval.sym); |
|
if (sign == -1) { |
|
val = my_mpz_neg(val); |
|
} |
|
token = lex(); |
|
return val; |
|
} |
|
|
static int parse_integer() |
static int parse_integer() |
{ |
{ |
|
#if 0 |
|
return mpz_get_si(parse_mpz_integer()); |
|
#else |
|
int sign = 1; |
int val; |
int val; |
if (token != T_INTEGER) { |
|
|
if (token == '+') { |
|
token = lex(); |
|
}else if (token == '-') { |
|
sign = -1; |
|
token = lex(); |
|
} |
|
|
|
if (token != T_DIGIT) { |
parse_error("no integer."); |
parse_error("no integer."); |
} |
} |
val = yylval.d; |
val = sign*atoi(yylval.sym); |
token = lex(); |
token = lex(); |
return val; |
return val; |
|
#endif |
} |
} |
|
|
static char *parse_string() |
static char *parse_string() |
Line 303 static cmo *parse_cmo_null() |
|
Line 361 static cmo *parse_cmo_null() |
|
|
|
static cmo *parse_cmo_int32() |
static cmo *parse_cmo_int32() |
{ |
{ |
int i; |
int z; |
|
|
parse_comma(); |
parse_comma(); |
i = parse_integer(); |
z = parse_integer(); |
parse_right_parenthesis(); |
parse_right_parenthesis(); |
return (cmo *)new_cmo_int32(i); |
return (cmo *)new_cmo_int32(z); |
} |
} |
|
|
static cmo *parse_cmo_string() |
static cmo *parse_cmo_string() |
Line 317 static cmo *parse_cmo_string() |
|
Line 375 static cmo *parse_cmo_string() |
|
char *s; |
char *s; |
|
|
parse_comma(); |
parse_comma(); |
if (token == T_INTEGER) { |
if (token == T_DIGIT) { |
parse_integer(); |
parse_integer(); |
parse_comma(); |
parse_comma(); |
}else if (!pflag_cmo_addrev) { |
}else if (!pflag_cmo_addrev) { |
Line 342 static cmo *parse_cmo_mathcap() |
|
Line 400 static cmo *parse_cmo_mathcap() |
|
|
|
static cmo *parse_cmo_list() |
static cmo *parse_cmo_list() |
{ |
{ |
int length=0; |
|
int i=0; |
|
cmo_list *m = new_cmo_list(); |
cmo_list *m = new_cmo_list(); |
cmo *newcmo; |
cmo *newcmo; |
|
|
if (token == ',') { |
if (token == ',') { |
parse_comma(); |
parse_comma(); |
|
|
if (token == T_INTEGER) { |
if (token == T_DIGIT) { |
parse_integer(); |
parse_integer(); |
parse_comma(); |
parse_comma(); |
}else if (!pflag_cmo_addrev) { |
}else if (!pflag_cmo_addrev) { |
Line 360 static cmo *parse_cmo_list() |
|
Line 416 static cmo *parse_cmo_list() |
|
while(token == '(') { |
while(token == '(') { |
parse_left_parenthesis(); |
parse_left_parenthesis(); |
newcmo = parse_cmo(); |
newcmo = parse_cmo(); |
append_cmo_list(m, newcmo); |
list_append(m, newcmo); |
if (token != ',') { |
if (token != ',') { |
break; |
break; |
} |
} |
Line 376 static cmo *parse_cmo_list() |
|
Line 432 static cmo *parse_cmo_list() |
|
static cmo *parse_cmo_monomial32() |
static cmo *parse_cmo_monomial32() |
{ |
{ |
int size; |
int size; |
int *exps; |
|
int i; |
int i; |
cmo_monomial32 *m; |
cmo_monomial32 *m; |
int tag; |
int tag; |
Line 397 static cmo *parse_cmo_monomial32() |
|
Line 452 static cmo *parse_cmo_monomial32() |
|
m->coef = parse_cmo(); |
m->coef = parse_cmo(); |
tag = m->coef->tag; |
tag = m->coef->tag; |
|
|
/* m->coef は CMO_ZZ 型か CMO_INT32 型でなければならない */ |
/* semantics: |
|
The tag of m->coef must be CMO_ZZ or CMO_INT32. */ |
if (tag != CMO_ZZ && tag != CMO_INT32) { |
if (tag != CMO_ZZ && tag != CMO_INT32) { |
parse_error("invalid cmo."); |
parse_error("invalid cmo."); |
} |
} |
Line 405 static cmo *parse_cmo_monomial32() |
|
Line 461 static cmo *parse_cmo_monomial32() |
|
return (cmo *)m; |
return (cmo *)m; |
} |
} |
|
|
/* cmo_zz の内部を直接いじる. */ |
/* the following function rewrite internal data of mpz/cmo_zz. */ |
static cmo *parse_cmo_zz() |
static cmo *parse_cmo_zz() |
{ |
{ |
int length; |
int length; |
int i=0; |
int i=0; |
cmo_zz *m= NULL; |
cmo_zz *m= NULL; |
|
mpz_ptr z; |
|
|
parse_comma(); |
parse_comma(); |
length = parse_integer(); |
z = parse_mpz_integer(); |
if (token == ',') { |
if (token == ',') { |
|
length = mpz_get_si(z); |
m = new_cmo_zz_size(length); |
m = new_cmo_zz_size(length); |
|
|
length = abs(length); |
length = abs(length); |
Line 423 static cmo *parse_cmo_zz() |
|
Line 481 static cmo *parse_cmo_zz() |
|
m->mpz->_mp_d[i] = parse_integer(); |
m->mpz->_mp_d[i] = parse_integer(); |
} |
} |
}else if (pflag_cmo_addrev) { |
}else if (pflag_cmo_addrev) { |
m = new_cmo_zz_set_si(length); |
m = new_cmo_zz_set_mpz(z); |
}else { |
}else { |
parse_error("no comma."); |
parse_error("no comma."); |
} |
} |
Line 452 static cmo *parse_cmo_ring_by_name() |
|
Line 510 static cmo *parse_cmo_ring_by_name() |
|
parse_left_parenthesis(); |
parse_left_parenthesis(); |
ob = parse_cmo(); |
ob = parse_cmo(); |
|
|
/* ob は CMO_STRING 型でなければならない */ |
/* The ob has a type of CMO_STRING. */ |
if (ob->tag != CMO_STRING) { |
if (ob->tag != CMO_STRING) { |
parse_error("invalid cmo."); |
parse_error("invalid cmo."); |
} |
} |
Line 462 static cmo *parse_cmo_ring_by_name() |
|
Line 520 static cmo *parse_cmo_ring_by_name() |
|
|
|
static cmo *parse_cmo_distributed_polynomial() |
static cmo *parse_cmo_distributed_polynomial() |
{ |
{ |
int length=0; |
|
int i=0; |
|
cmo_distributed_polynomial *m = new_cmo_distributed_polynomial(); |
cmo_distributed_polynomial *m = new_cmo_distributed_polynomial(); |
cmo *ob; |
cmo *ob; |
int tag; |
int tag; |
Line 471 static cmo *parse_cmo_distributed_polynomial() |
|
Line 527 static cmo *parse_cmo_distributed_polynomial() |
|
if (token == ',') { |
if (token == ',') { |
parse_comma(); |
parse_comma(); |
|
|
if (token == T_INTEGER) { |
if (token == T_DIGIT) { |
parse_integer(); |
parse_integer(); |
parse_comma(); |
parse_comma(); |
}else if (!pflag_cmo_addrev) { |
}else if (!pflag_cmo_addrev) { |
Line 481 static cmo *parse_cmo_distributed_polynomial() |
|
Line 537 static cmo *parse_cmo_distributed_polynomial() |
|
parse_left_parenthesis(); |
parse_left_parenthesis(); |
m->ringdef = parse_cmo(); |
m->ringdef = parse_cmo(); |
tag = m->ringdef->tag; |
tag = m->ringdef->tag; |
/* m->ringdef は DringDefinition でなければならない */ |
/* m->ringdef needs to be a DringDefinition. */ |
if (tag != CMO_RING_BY_NAME && tag != CMO_DMS_GENERIC |
if (tag != CMO_RING_BY_NAME && tag != CMO_DMS_GENERIC |
&& tag != CMO_DMS_OF_N_VARIABLES) { |
&& tag != CMO_DMS_OF_N_VARIABLES) { |
parse_error("invalid cmo."); |
parse_error("invalid cmo."); |
Line 495 static cmo *parse_cmo_distributed_polynomial() |
|
Line 551 static cmo *parse_cmo_distributed_polynomial() |
|
if (ob->tag != CMO_MONOMIAL32 && ob->tag != CMO_ZERO) { |
if (ob->tag != CMO_MONOMIAL32 && ob->tag != CMO_ZERO) { |
parse_error("invalid cmo."); |
parse_error("invalid cmo."); |
} |
} |
append_cmo_list((cmo_list *)m, ob); |
list_append((cmo_list *)m, ob); |
if (token != ',') { |
if (token != ',') { |
break; |
break; |
} |
} |
Line 530 static cmo *parse_cmo_error2() |
|
Line 586 static cmo *parse_cmo_error2() |
|
return (cmo *)new_cmo_error2(ob); |
return (cmo *)new_cmo_error2(ob); |
} |
} |
|
|
/* --- 字句解析部 --- */ |
/* --- lexical analyzer --- */ |
|
|
/* lexical analyzer で読み飛ばされる文字なら何を初期値にしてもよい */ |
/* A white space is ignored by lexical analyzer. */ |
static int c = ' '; |
static int c = ' '; |
|
|
/* 一文字読み込む関数 */ |
/* getting a character from string. */ |
static int (*GETC)() = getchar; |
static char *mygetc_ptr; |
|
static int mygetc() |
int setgetc(int (*foo)()) |
|
{ |
{ |
GETC = foo; |
return *mygetc_ptr++; |
} |
} |
|
|
int resetgetc() |
static void init_lex(char *s) |
{ |
{ |
GETC = getchar; |
c=' '; |
|
mygetc_ptr=s; |
} |
} |
|
|
#define SIZE_BUFFER 8192 |
#define SIZE_BUFFER 8192 |
static char buffer[SIZE_BUFFER]; |
static char buffer[SIZE_BUFFER]; |
|
|
/* 桁溢れの場合の対策はない */ |
static char *new_string(char *s) |
static int lex_digit() |
|
{ |
{ |
int d = 0; |
char *t = MALLOC(strlen(s)+1); |
do { |
strcpy(t, s); |
d = 10*d + (c - '0'); |
return t; |
c = GETC(); |
|
} while(isdigit(c)); |
|
return d; |
|
} |
} |
|
|
|
/* no measure for buffer overflow */ |
|
static char *lex_digit() |
|
{ |
|
static char buff[SIZE_BUFFER]; |
|
int i; |
|
|
|
for(i=0; i<SIZE_BUFFER-1; i++) { |
|
if(isdigit(c)) { |
|
buff[i] = c; |
|
}else { |
|
buff[i] = '\0'; |
|
return new_string(buff); |
|
} |
|
c = mygetc(); |
|
} |
|
buff[SIZE_BUFFER-1] = '\0'; |
|
return new_string(buff); |
|
} |
|
|
#define MK_KEY_CMO(x) { #x , x , TOKEN(x) , IS_CMO } |
#define MK_KEY_CMO(x) { #x , x , TOKEN(x) , IS_CMO } |
#define MK_KEY_SM(x) { #x , x , TOKEN(SM) , IS_SM } |
#define MK_KEY_SM(x) { #x , x , TOKEN(SM) , IS_SM } |
#define MK_KEY_OX(x) { #x , x , TOKEN(x) , IS_OX } |
#define MK_KEY_OX(x) { #x , x , TOKEN(x) , IS_OX } |
|
|
static symbol symbol_list[] = { |
static struct symbol symbol_list[] = { |
MK_KEY_CMO(CMO_NULL), |
MK_KEY_CMO(CMO_NULL), |
MK_KEY_CMO(CMO_INT32), |
MK_KEY_CMO(CMO_INT32), |
MK_KEY_CMO(CMO_DATUM), |
MK_KEY_CMO(CMO_DATUM), |
Line 596 static symbol symbol_list[] = { |
|
Line 667 static symbol symbol_list[] = { |
|
{NULL, 0, 0, 0} /* a gate keeper */ |
{NULL, 0, 0, 0} /* a gate keeper */ |
}; |
}; |
|
|
symbol* lookup_by_symbol(char *key) |
symbol_t lookup_by_symbol(char *key) |
{ |
{ |
symbol *symp; |
symbol_t symp; |
for(symp = symbol_list; symp->key != NULL; symp++) { |
for(symp = symbol_list; symp->key != NULL; symp++) { |
if (strcmp(key, symp->key)==0) { |
if (strcmp(key, symp->key)==0) { |
return symp; |
return symp; |
Line 607 symbol* lookup_by_symbol(char *key) |
|
Line 678 symbol* lookup_by_symbol(char *key) |
|
return NULL; |
return NULL; |
} |
} |
|
|
symbol* lookup_by_token(int tok) |
symbol_t lookup_by_token(int tok) |
{ |
{ |
symbol *symp; |
symbol_t symp; |
for(symp = symbol_list; symp->key != NULL; symp++) { |
for(symp = symbol_list; symp->key != NULL; symp++) { |
if (tok == symp->token) { |
if (tok == symp->token) { |
return symp; |
return symp; |
Line 618 symbol* lookup_by_token(int tok) |
|
Line 689 symbol* lookup_by_token(int tok) |
|
return NULL; |
return NULL; |
} |
} |
|
|
symbol* lookup_by_tag(int tag) |
symbol_t lookup_by_tag(int tag) |
{ |
{ |
symbol *symp; |
symbol_t symp; |
for(symp = symbol_list; symp->key != NULL; symp++) { |
for(symp = symbol_list; symp->key != NULL; symp++) { |
if (tag == symp->tag) { |
if (tag == symp->tag) { |
return symp; |
return symp; |
Line 629 symbol* lookup_by_tag(int tag) |
|
Line 700 symbol* lookup_by_tag(int tag) |
|
return NULL; |
return NULL; |
} |
} |
|
|
symbol* lookup(int i) |
symbol_t lookup(int i) |
{ |
{ |
return &symbol_list[i]; |
return &symbol_list[i]; |
} |
} |
|
|
/* バッファあふれした場合の対策をちゃんと考えるべき */ |
char *get_symbol_by_tag(int tag) |
|
{ |
|
symbol_t symp = lookup_by_tag(tag); |
|
return (symp != NULL)? symp->key: NULL; |
|
} |
|
|
|
/* no measure for buffer overflow */ |
static char *lex_quoted_string() |
static char *lex_quoted_string() |
{ |
{ |
int i; |
int i; |
char c0 = ' '; |
char c0 = ' '; |
char *s = NULL; |
|
for (i=0; i<SIZE_BUFFER; i++) { |
for (i=0; i<SIZE_BUFFER; i++) { |
c = GETC(); |
c = mygetc(); |
if(c == '"') { |
if(c == '"') { |
s = malloc(i+1); |
c = mygetc(); |
buffer[i]='\0'; |
buffer[i]='\0'; |
strcpy(s, buffer); |
return new_string(buffer); |
|
|
c = GETC(); |
|
return s; |
|
}else if (c == '\\') { |
}else if (c == '\\') { |
c0 = c; |
c0 = c; |
c = GETC(); |
c = mygetc(); |
if (c != '"') { |
if (c != '"') { |
buffer[i++] = c0; |
buffer[i++] = c0; |
} |
} |
} |
} |
buffer[i]=c; |
buffer[i]=c; |
} |
} |
fprintf(stderr, "buffer overflow!\n"); |
ox_printf("buffer overflow!\n"); |
exit(1); |
exit(1); |
/* return NULL; */ |
/* return NULL; */ |
} |
} |
|
|
static int token_of_symbol(char *key) |
static int token_of_symbol(char *key) |
{ |
{ |
symbol *symp = lookup_by_symbol(key); |
symbol_t symp = lookup_by_symbol(key); |
if (symp != NULL) { |
if (symp != NULL) { |
yylval.d = symp->tag; |
yylval.d = symp->tag; |
return symp->token; |
return symp->token; |
} |
} |
#if DEBUG |
ox_printf("lex error:: \"%s\" is unknown symbol.\n", key); |
fprintf(stderr, "lex error:: \"%s\" is unknown symbol.\n", key); |
|
#endif |
|
return 0; |
return 0; |
} |
} |
|
|
Line 685 static int lex_symbol() |
|
Line 757 static int lex_symbol() |
|
return token_of_symbol(buffer); |
return token_of_symbol(buffer); |
} |
} |
buffer[i]=c; |
buffer[i]=c; |
c = GETC(); |
c = mygetc(); |
} |
} |
fprintf(stderr, "buffer overflow!\n"); |
ox_printf("buffer overflow!\n"); |
return 0; |
return 0; |
} |
} |
|
|
/* return する前に一文字先読みしておく. */ |
/* Remark: prefetching a character before return. */ |
int lex() |
static int lex() |
{ |
{ |
int c_dash = 0; |
int c_dash = 0; |
|
|
/* 空白をスキップする. */ |
/* white spaces are ignored. */ |
while (isspace(c) && c != '\n') { |
while (isspace(c)) { |
c = GETC(); |
c = mygetc(); |
} |
} |
|
|
switch(c) { |
switch(c) { |
case '(': |
case '(': |
case ')': |
case ')': |
case ',': |
case ',': |
case '\n': |
case '+': |
|
case '-': |
c_dash = c; |
c_dash = c; |
c = ' '; |
c = ' '; |
return c_dash; |
return c_dash; |
case EOF: |
case EOF: |
c = GETC(); |
c = mygetc(); |
return c_dash; |
return c_dash; |
case '"': /* a quoted string! */ |
case '"': /* a quoted string! */ |
yylval.sym = lex_quoted_string(); |
yylval.sym = lex_quoted_string(); |
return T_STRING; |
return T_STRING; |
default: |
default: |
|
; |
} |
} |
|
|
if (isalpha(c)) { /* 識別子 */ |
if (isalpha(c)) { |
|
/* symbols */ |
return lex_symbol(); |
return lex_symbol(); |
} |
} |
|
|
/* 32bit 整数値 */ |
/* digit */ |
if (isdigit(c)){ |
if (isdigit(c)){ |
yylval.d = lex_digit(); |
yylval.sym = lex_digit(); |
return T_INTEGER; |
return T_DIGIT; |
} |
} |
if (c == '-') { |
c = mygetc(); |
c = GETC(); |
|
while (isspace(c) && c != '\n') { |
|
c = GETC(); |
|
} |
|
if (isdigit(c)){ |
|
yylval.d = - lex_digit(); |
|
return T_INTEGER; |
|
} |
|
return 0; |
|
} |
|
|
|
c = GETC(); |
|
return 0; |
return 0; |
} |
|
|
|
/* 一文字読み込む関数 */ |
|
static char *mygetc_line; |
|
static int mygetc_counter; |
|
static int mygetc_counter_max; |
|
static int mygetc_nonlf_flag; |
|
|
|
int mygetc() |
|
{ |
|
int c = '\0'; |
|
|
|
if (mygetc_nonlf_flag && mygetc_counter <= mygetc_counter_max) { |
|
c = mygetc_line[mygetc_counter++]; |
|
if (c == '\0') { |
|
c = '\n'; |
|
mygetc_nonlf_flag = 0; |
|
} |
|
} |
|
return c; |
|
} |
|
|
|
int setmode_mygetc(char *s, int len) |
|
{ |
|
mygetc_nonlf_flag=1; |
|
mygetc_counter=0; |
|
mygetc_counter_max=len; |
|
mygetc_line=s; |
|
} |
|
|
|
int setflag_parse(int flag) |
|
{ |
|
pflag_cmo_addrev = flag; |
|
} |
} |