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未验证 提交 28eee7d5 编写于 作者: 羽飞's avatar 羽飞 提交者： GitHub
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opt lex and yacc (#123)

上级 da389bf8
展开全部 隐藏空白更改
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Showing with 608 addition and 595 deletion
src/observer/CMakeLists.txt
浏览文件 @ 28eee7d5
......@@ -24,7 +24,7 @@ FOREACH (F ${ALL_SRC})
ENDFOREACH (F)
SET(LIBRARIES common pthread dl event_pthreads event jsoncpp)
SET(LIBRARIES common pthread dl event_pthreads event libjsoncpp.a)
# 指定目标文件位置
SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/../../bin)
......
src/observer/sql/parser/gen_parser.sh 0 → 100755
浏览文件 @ 28eee7d5
#!/bin/bash
flex --outfile lex_sql.cpp --header-file=lex_sql.h lex_sql.l
`which bison` -d --output yacc_sql.cpp yacc_sql.y
src/observer/sql/parser/lex.yy.h → src/observer/sql/parser/lex_sql.h
浏览文件 @ 28eee7d5
......@@ -2,7 +2,9 @@
#define yyHEADER_H 1
#define yyIN_HEADER 1
#line 6 "lex.yy.h"
#line 6 "lex_sql.h"
#line 8 "lex_sql.h"
#define YY_INT_ALIGNED short int
......@@ -49,7 +51,6 @@ typedef int16_t flex_int16_t;
typedef uint16_t flex_uint16_t;
typedef int32_t flex_int32_t;
typedef uint32_t flex_uint32_t;
typedef uint64_t flex_uint64_t;
#else
typedef signed char flex_int8_t;
typedef short int flex_int16_t;
......@@ -160,7 +161,7 @@ struct yy_buffer_state
/* Number of characters read into yy_ch_buf, not including EOB
* characters.
*/
yy_size_t yy_n_chars;
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
......@@ -204,7 +205,7 @@ void yypop_buffer_state (yyscan_t yyscanner );
YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,yy_size_t len ,yyscan_t yyscanner );
YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
void *yyalloc (yy_size_t ,yyscan_t yyscanner );
void *yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
......@@ -260,7 +261,7 @@ FILE *yyget_out (yyscan_t yyscanner );
void yyset_out (FILE * out_str ,yyscan_t yyscanner );
yy_size_t yyget_leng (yyscan_t yyscanner );
int yyget_leng (yyscan_t yyscanner );
char *yyget_text (yyscan_t yyscanner );
......@@ -333,9 +334,9 @@ extern int yylex \
#undef YY_DECL
#endif
#line 88 "lex_sql.l"
#line 103 "lex_sql.l"
#line 340 "lex.yy.h"
#line 341 "lex_sql.h"
#undef yyIN_HEADER
#endif /* yyHEADER_H */
src/observer/sql/parser/lex_sql.l
浏览文件 @ 28eee7d5
......@@ -2,9 +2,15 @@
#include<string.h>
#include<stdio.h>
/**
* flex 代码包含三个部分，使用 %% 分隔
* 第一个部分的代码是C代码，flex会原样复制到目标文件中
* 第二个部分是规则部分，使用正则表达式定义一系列规则
* 第三个部分还是C代码，flex 会复制此段代码
*/
struct ParserContext;
#include "yacc_sql.tab.h"
#include "yacc_sql.hpp"
extern int atoi();
extern double atof();
......@@ -21,6 +27,8 @@ extern double atof();
%option noyywrap
%option bison-bridge
%option reentrant
/* 不区分大小写 */
%option case-insensitive
WHITE_SAPCE [\ \t\b\f]
DIGIT [0-9]+
......@@ -30,61 +38,68 @@ DOT \.
QUOTE [\'\"]
%x STR
/* 规则匹配的优先级：*/
/* 1. 匹配的规则长的优先 */
/* 2. 写在最前面的优先 */
/* yylval 就可以认为是 yacc 中 %union 定义的结构体(union 结构) */
%%
{WHITE_SAPCE} // ignore whitespace
\n ;
[\-]?{DIGIT}+ yylval->number=atoi(yytext); RETURN_TOKEN(NUMBER);
[\-]?{DIGIT}+{DOT}{DIGIT}+ yylval->floats=(float)(atof(yytext)); RETURN_TOKEN(FLOAT);
[\-]?{DIGIT}+ yylval->number=atoi(yytext); RETURN_TOKEN(NUMBER);
[\-]?{DIGIT}+{DOT}{DIGIT}+ yylval->floats=(float)(atof(yytext)); RETURN_TOKEN(FLOAT);
";" RETURN_TOKEN(SEMICOLON);
{DOT} RETURN_TOKEN(DOT);
"*" RETURN_TOKEN(STAR);
[Ee][Xx][Ii][Tt] RETURN_TOKEN(EXIT);
[Hh][Ee][Ll][Pp] RETURN_TOKEN(HELP);
[Dd][Ee][Ss][Cc] RETURN_TOKEN(DESC);
[Cc][Rr][Ee][Aa][Tt][Ee] RETURN_TOKEN(CREATE);
[Dd][Rr][Oo][Pp] RETURN_TOKEN(DROP);
[Tt][Aa][Bb][Ll][Ee] RETURN_TOKEN(TABLE);
[Tt][Aa][Bb][Ll][Ee][Ss] RETURN_TOKEN(TABLES);
[Ii][Nn][Dd][Ee][Xx] RETURN_TOKEN(INDEX);
[Oo][Nn] RETURN_TOKEN(ON);
[Ss][Hh][Oo][Ww] RETURN_TOKEN(SHOW);
[Ss][Yy][Nn][Cc] RETURN_TOKEN(SYNC);
[Ss][Ee][Ll][Ee][Cc][Tt] RETURN_TOKEN(SELECT);
[Ff][Rr][Oo][Mm] RETURN_TOKEN(FROM);
[Ww][Hh][Ee][Rr][Ee] RETURN_TOKEN(WHERE);
[Aa][Nn][Dd] RETURN_TOKEN(AND);
[Ii][Nn][Ss][Ee][rR][tT] RETURN_TOKEN(INSERT);
[Ii][Nn][Tt][Oo] RETURN_TOKEN(INTO);
[Vv][Aa][Ll][Uu][Ee][Ss] RETURN_TOKEN(VALUES);
[Dd][Ee][Ll][Ee][Tt][Ee] RETURN_TOKEN(DELETE);
[Uu][Pp][Dd][Aa][Tt][Ee] RETURN_TOKEN(UPDATE);
[Ss][Ee][Tt] RETURN_TOKEN(SET);
[Bb][Ee][Gg][Ii][Nn] RETURN_TOKEN(TRX_BEGIN);
[Cc][Oo][Mm][Mm][Ii][Tt] RETURN_TOKEN(TRX_COMMIT);
[Rr][Oo][Ll][Ll][Bb][Aa][Cc][Kk] RETURN_TOKEN(TRX_ROLLBACK);
[Ii][Nn][Tt] RETURN_TOKEN(INT_T);
[Cc][Hh][Aa][Rr] RETURN_TOKEN(STRING_T);
[Ff][Ll][Oo][Aa][Tt] RETURN_TOKEN(FLOAT_T);
[Ll][Oo][Aa][Dd] RETURN_TOKEN(LOAD);
[Dd][Aa][Tt][Aa] RETURN_TOKEN(DATA);
[Ii][Nn][Ff][Ii][Ll][Ee] RETURN_TOKEN(INFILE);
{ID} yylval->string=strdup(yytext); RETURN_TOKEN(ID);
"(" RETURN_TOKEN(LBRACE);
")" RETURN_TOKEN(RBRACE);
";" RETURN_TOKEN(SEMICOLON);
{DOT} RETURN_TOKEN(DOT);
"*" RETURN_TOKEN(STAR);
EXIT RETURN_TOKEN(EXIT);
HELP RETURN_TOKEN(HELP);
DESC RETURN_TOKEN(DESC);
CREATE RETURN_TOKEN(CREATE);
DROP RETURN_TOKEN(DROP);
TABLE RETURN_TOKEN(TABLE);
TABLES RETURN_TOKEN(TABLES);
INDEX RETURN_TOKEN(INDEX);
ON RETURN_TOKEN(ON);
SHOW RETURN_TOKEN(SHOW);
SYNC RETURN_TOKEN(SYNC);
SELECT RETURN_TOKEN(SELECT);
FROM RETURN_TOKEN(FROM);
WHERE RETURN_TOKEN(WHERE);
AND RETURN_TOKEN(AND);
INSERT RETURN_TOKEN(INSERT);
INTO RETURN_TOKEN(INTO);
VALUES RETURN_TOKEN(VALUES);
DELETE RETURN_TOKEN(DELETE);
UPDATE RETURN_TOKEN(UPDATE);
SET RETURN_TOKEN(SET);
BEGIN RETURN_TOKEN(TRX_BEGIN);
COMMIT RETURN_TOKEN(TRX_COMMIT);
ROLLBACK RETURN_TOKEN(TRX_ROLLBACK);
INT RETURN_TOKEN(INT_T);
CHAR RETURN_TOKEN(STRING_T);
FLOAT RETURN_TOKEN(FLOAT_T);
LOAD RETURN_TOKEN(LOAD);
DATA RETURN_TOKEN(DATA);
INFILE RETURN_TOKEN(INFILE);
{ID} yylval->string=strdup(yytext); RETURN_TOKEN(ID);
"(" RETURN_TOKEN(LBRACE);
")" RETURN_TOKEN(RBRACE);
"," RETURN_TOKEN(COMMA);
"=" RETURN_TOKEN(EQ);
"<=" RETURN_TOKEN(LE);
"<>" RETURN_TOKEN(NE);
"<" RETURN_TOKEN(LT);
">=" RETURN_TOKEN(GE);
">" RETURN_TOKEN(GT);
{QUOTE}[\40\42\47A-Za-z0-9_/\.\-]*{QUOTE} yylval->string=strdup(yytext); RETURN_TOKEN(SSS);
"," RETURN_TOKEN(COMMA);
"=" RETURN_TOKEN(EQ);
"<=" RETURN_TOKEN(LE);
"<>" RETURN_TOKEN(NE);
"!=" RETURN_TOKEN(NE);
"<" RETURN_TOKEN(LT);
">=" RETURN_TOKEN(GE);
">" RETURN_TOKEN(GT);
\"[^"]*\" yylval->string=strdup(yytext); RETURN_TOKEN(SSS);
'[^']*\' yylval->string = strdup(yytext); RETURN_TOKEN(SSS);
. printf("Unknown character [%c]\n",yytext[0]); return yytext[0];
. printf("Unknown character [%c]\n",yytext[0]); return yytext[0];
%%
void scan_string(const char *str, yyscan_t scanner) {
......
src/observer/sql/parser/parse.cpp
浏览文件 @ 28eee7d5
......@@ -19,9 +19,6 @@ See the Mulan PSL v2 for more details. */
RC parse(char *st, Query *sqln);
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
void relation_attr_init(RelAttr *relation_attr, const char *relation_name, const char *attribute_name)
{
if (relation_name != nullptr) {
......@@ -388,13 +385,10 @@ void query_destroy(Query *query)
query_reset(query);
free(query);
}
#ifdef __cplusplus
} // extern "C"
#endif // __cplusplus
////////////////////////////////////////////////////////////////////////////////
extern "C" int sql_parse(const char *st, Query *sqls);
int sql_parse(const char *st, Query *sqls);
RC parse(const char *st, Query *sqln)
{
......@@ -404,4 +398,4 @@ RC parse(const char *st, Query *sqln)
return SQL_SYNTAX;
else
return SUCCESS;
}
\ No newline at end of file
}
src/observer/sql/parser/parse_defs.h
浏览文件 @ 28eee7d5
......@@ -180,10 +180,6 @@ typedef struct Query {
union Queries sstr;
} Query;
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
void relation_attr_init(RelAttr *relation_attr, const char *relation_name, const char *attribute_name);
void relation_attr_destroy(RelAttr *relation_attr);
......@@ -241,8 +237,4 @@ Query *query_create(); // create and init
void query_reset(Query *query);
void query_destroy(Query *query); // reset and delete
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // __OBSERVER_SQL_PARSER_PARSE_DEFS_H__
src/observer/sql/parser/yacc_sql.tab.h → src/observer/sql/parser/yacc_sql.hpp
浏览文件 @ 28eee7d5
......@@ -35,11 +35,11 @@
especially those whose name start with YY_ or yy_. They are
private implementation details that can be changed or removed. */
#ifndef YY_YY_YACC_SQL_TAB_H_INCLUDED
#define YY_YY_YACC_SQL_TAB_H_INCLUDED
#ifndef YY_YY_YACC_SQL_HPP_INCLUDED
# define YY_YY_YACC_SQL_HPP_INCLUDED
/* Debug traces. */
#ifndef YYDEBUG
#define YYDEBUG 0
# define YYDEBUG 0
#endif
#if YYDEBUG
extern int yydebug;
......@@ -47,67 +47,69 @@ extern int yydebug;
/* Token kinds. */
#ifndef YYTOKENTYPE
#define YYTOKENTYPE
enum yytokentype {
YYEMPTY = -2,
YYEOF = 0, /* "end of file" */
YYerror = 256, /* error */
YYUNDEF = 257, /* "invalid token" */
SEMICOLON = 258, /* SEMICOLON */
CREATE = 259, /* CREATE */
DROP = 260, /* DROP */
TABLE = 261, /* TABLE */
TABLES = 262, /* TABLES */
INDEX = 263, /* INDEX */
SELECT = 264, /* SELECT */
DESC = 265, /* DESC */
SHOW = 266, /* SHOW */
SYNC = 267, /* SYNC */
INSERT = 268, /* INSERT */
DELETE = 269, /* DELETE */
UPDATE = 270, /* UPDATE */
LBRACE = 271, /* LBRACE */
RBRACE = 272, /* RBRACE */
COMMA = 273, /* COMMA */
TRX_BEGIN = 274, /* TRX_BEGIN */
TRX_COMMIT = 275, /* TRX_COMMIT */
TRX_ROLLBACK = 276, /* TRX_ROLLBACK */
INT_T = 277, /* INT_T */
STRING_T = 278, /* STRING_T */
FLOAT_T = 279, /* FLOAT_T */
HELP = 280, /* HELP */
EXIT = 281, /* EXIT */
DOT = 282, /* DOT */
INTO = 283, /* INTO */
VALUES = 284, /* VALUES */
FROM = 285, /* FROM */
WHERE = 286, /* WHERE */
AND = 287, /* AND */
SET = 288, /* SET */
ON = 289, /* ON */
LOAD = 290, /* LOAD */
DATA = 291, /* DATA */
INFILE = 292, /* INFILE */
EQ = 293, /* EQ */
LT = 294, /* LT */
GT = 295, /* GT */
LE = 296, /* LE */
GE = 297, /* GE */
NE = 298, /* NE */
NUMBER = 299, /* NUMBER */
FLOAT = 300, /* FLOAT */
ID = 301, /* ID */
PATH = 302, /* PATH */
SSS = 303, /* SSS */
STAR = 304, /* STAR */
STRING_V = 305 /* STRING_V */
};
typedef enum yytokentype yytoken_kind_t;
# define YYTOKENTYPE
enum yytokentype
{
YYEMPTY = -2,
YYEOF = 0, /* "end of file" */
YYerror = 256, /* error */
YYUNDEF = 257, /* "invalid token" */
SEMICOLON = 258, /* SEMICOLON */
CREATE = 259, /* CREATE */
DROP = 260, /* DROP */
TABLE = 261, /* TABLE */
TABLES = 262, /* TABLES */
INDEX = 263, /* INDEX */
SELECT = 264, /* SELECT */
DESC = 265, /* DESC */
SHOW = 266, /* SHOW */
SYNC = 267, /* SYNC */
INSERT = 268, /* INSERT */
DELETE = 269, /* DELETE */
UPDATE = 270, /* UPDATE */
LBRACE = 271, /* LBRACE */
RBRACE = 272, /* RBRACE */
COMMA = 273, /* COMMA */
TRX_BEGIN = 274, /* TRX_BEGIN */
TRX_COMMIT = 275, /* TRX_COMMIT */
TRX_ROLLBACK = 276, /* TRX_ROLLBACK */
INT_T = 277, /* INT_T */
STRING_T = 278, /* STRING_T */
FLOAT_T = 279, /* FLOAT_T */
HELP = 280, /* HELP */
EXIT = 281, /* EXIT */
DOT = 282, /* DOT */
INTO = 283, /* INTO */
VALUES = 284, /* VALUES */
FROM = 285, /* FROM */
WHERE = 286, /* WHERE */
AND = 287, /* AND */
SET = 288, /* SET */
ON = 289, /* ON */
LOAD = 290, /* LOAD */
DATA = 291, /* DATA */
INFILE = 292, /* INFILE */
EQ = 293, /* EQ */
LT = 294, /* LT */
GT = 295, /* GT */
LE = 296, /* LE */
GE = 297, /* GE */
NE = 298, /* NE */
NUMBER = 299, /* NUMBER */
FLOAT = 300, /* FLOAT */
ID = 301, /* ID */
PATH = 302, /* PATH */
SSS = 303, /* SSS */
STAR = 304, /* STAR */
STRING_V = 305 /* STRING_V */
};
typedef enum yytokentype yytoken_kind_t;
#endif
/* Value type. */
#if !defined YYSTYPE && !defined YYSTYPE_IS_DECLARED
union YYSTYPE {
#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
union YYSTYPE
{
#line 106 "yacc_sql.y"
struct _Attr *attr;
......@@ -116,15 +118,18 @@ union YYSTYPE {
char *string;
int number;
float floats;
char *position;
char *position;
#line 124 "yacc_sql.hpp"
#line 124 "yacc_sql.tab.h"
};
typedef union YYSTYPE YYSTYPE;
#define YYSTYPE_IS_TRIVIAL 1
#define YYSTYPE_IS_DECLARED 1
# define YYSTYPE_IS_TRIVIAL 1
# define YYSTYPE_IS_DECLARED 1
#endif
int yyparse(void *scanner);
#endif /* !YY_YY_YACC_SQL_TAB_H_INCLUDED */
int yyparse (void *scanner);
#endif /* !YY_YY_YACC_SQL_HPP_INCLUDED */
src/observer/sql/parser/yacc_sql.y
浏览文件 @ 28eee7d5
......@@ -2,9 +2,9 @@
%{
#include "sql/parser/parse_defs.h"
#include "sql/parser/yacc_sql.tab.h"
#include "sql/parser/lex.yy.h"
// #include "common/log/log.h" // 包含C++中的头文件
#include "sql/parser/yacc_sql.hpp"
#include "sql/parser/lex_sql.h"
#include "common/log/log.h"
#include<stdio.h>
#include<stdlib.h>
......@@ -25,7 +25,7 @@ typedef struct ParserContext {
//获取子串
char *substr(const char *s,int n1,int n2)/*从s中提取下标为n1~n2的字符组成一个新字符串，然后返回这个新串的首地址*/
{
char *sp = malloc(sizeof(char) * (n2 - n1 + 2));
char *sp = (char *)malloc(sizeof(char) * (n2 - n1 + 2));
int i, j = 0;
for (i = n1; i <= n2; i++) {
sp[j++] = s[i];
......@@ -226,7 +226,6 @@ create_table: /*create table 语句的语法解析树*/
CREATE TABLE ID LBRACE attr_def attr_def_list RBRACE SEMICOLON
{
CONTEXT->ssql->flag=SCF_CREATE_TABLE;//"create_table";
// CONTEXT->ssql->sstr.create_table.attribute_count = CONTEXT->value_length;
create_table_init_name(&CONTEXT->ssql->sstr.create_table, $3);
//临时变量清零
CONTEXT->value_length = 0;
......@@ -241,23 +240,15 @@ attr_def:
ID_get type LBRACE number RBRACE
{
AttrInfo attribute;
attr_info_init(&attribute, CONTEXT->id, $2, $4);
attr_info_init(&attribute, CONTEXT->id, (AttrType)$2, $4);
create_table_append_attribute(&CONTEXT->ssql->sstr.create_table, &attribute);
// CONTEXT->ssql->sstr.create_table.attributes[CONTEXT->value_length].name =(char*)malloc(sizeof(char));
// strcpy(CONTEXT->ssql->sstr.create_table.attributes[CONTEXT->value_length].name, CONTEXT->id);
// CONTEXT->ssql->sstr.create_table.attributes[CONTEXT->value_length].type = $2;
// CONTEXT->ssql->sstr.create_table.attributes[CONTEXT->value_length].length = $4;
CONTEXT->value_length++;
}
|ID_get type
{
AttrInfo attribute;
attr_info_init(&attribute, CONTEXT->id, $2, 4);
attr_info_init(&attribute, CONTEXT->id, (AttrType)$2, 4);
create_table_append_attribute(&CONTEXT->ssql->sstr.create_table, &attribute);
// CONTEXT->ssql->sstr.create_table.attributes[CONTEXT->value_length].name=(char*)malloc(sizeof(char));
// strcpy(CONTEXT->ssql->sstr.create_table.attributes[CONTEXT->value_length].name, CONTEXT->id);
// CONTEXT->ssql->sstr.create_table.attributes[CONTEXT->value_length].type=$2;
// CONTEXT->ssql->sstr.create_table.attributes[CONTEXT->value_length].length=4; // default attribute length
CONTEXT->value_length++;
}
;
......@@ -281,14 +272,7 @@ ID_get:
insert: /*insert 语句的语法解析树*/
INSERT INTO ID VALUES LBRACE value value_list RBRACE SEMICOLON
{
// CONTEXT->values[CONTEXT->value_length++] = *$6;
CONTEXT->ssql->flag=SCF_INSERT;//"insert";
// CONTEXT->ssql->sstr.insertion.relation_name = $3;
// CONTEXT->ssql->sstr.insertion.value_num = CONTEXT->value_length;
// for(i = 0; i < CONTEXT->value_length; i++){
// CONTEXT->ssql->sstr.insertion.values[i] = CONTEXT->values[i];
// }
inserts_init(&CONTEXT->ssql->sstr.insertion, $3, CONTEXT->values, CONTEXT->value_length);
//临时变量清零
......@@ -330,20 +314,18 @@ update: /* update 语句的语法解析树*/
CONTEXT->ssql->flag = SCF_UPDATE;//"update";
Value *value = &CONTEXT->values[0];
updates_init(&CONTEXT->ssql->sstr.update, $2, $4, value,
CONTEXT->conditions, CONTEXT->condition_length);
CONTEXT->conditions, CONTEXT->condition_length);
CONTEXT->condition_length = 0;
}
;
select: /* select 语句的语法解析树*/
SELECT select_attr FROM ID rel_list where SEMICOLON
{
// CONTEXT->ssql->sstr.selection.relations[CONTEXT->from_length++]=$4;
selects_append_relation(&CONTEXT->ssql->sstr.selection, $4);
selects_append_conditions(&CONTEXT->ssql->sstr.selection, CONTEXT->conditions, CONTEXT->condition_length);
CONTEXT->ssql->flag=SCF_SELECT;//"select";
// CONTEXT->ssql->sstr.selection.attr_num = CONTEXT->select_length;
//临时变量清零
CONTEXT->condition_length=0;
......@@ -376,15 +358,11 @@ attr_list:
RelAttr attr;
relation_attr_init(&attr, NULL, $2);
selects_append_attribute(&CONTEXT->ssql->sstr.selection, &attr);
// CONTEXT->ssql->sstr.selection.attributes[CONTEXT->select_length].relation_name = NULL;
// CONTEXT->ssql->sstr.selection.attributes[CONTEXT->select_length++].attribute_name=$2;
}
| COMMA ID DOT ID attr_list {
RelAttr attr;
relation_attr_init(&attr, $2, $4);
selects_append_attribute(&CONTEXT->ssql->sstr.selection, &attr);
// CONTEXT->ssql->sstr.selection.attributes[CONTEXT->select_length].attribute_name=$4;
// CONTEXT->ssql->sstr.selection.attributes[CONTEXT->select_length++].relation_name=$2;
}
;
......@@ -417,16 +395,6 @@ condition:
Condition condition;
condition_init(&condition, CONTEXT->comp, 1, &left_attr, NULL, 0, NULL, right_value);
CONTEXT->conditions[CONTEXT->condition_length++] = condition;
// $$ = ( Condition *)malloc(sizeof( Condition));
// $$->left_is_attr = 1;
// $$->left_attr.relation_name = NULL;
// $$->left_attr.attribute_name= $1;
// $$->comp = CONTEXT->comp;
// $$->right_is_attr = 0;
// $$->right_attr.relation_name = NULL;
// $$->right_attr.attribute_name = NULL;
// $$->right_value = *$3;
}
|value comOp value
{
......@@ -436,17 +404,6 @@ condition:
Condition condition;
condition_init(&condition, CONTEXT->comp, 0, NULL, left_value, 0, NULL, right_value);
CONTEXT->conditions[CONTEXT->condition_length++] = condition;
// $$ = ( Condition *)malloc(sizeof( Condition));
// $$->left_is_attr = 0;
// $$->left_attr.relation_name=NULL;
// $$->left_attr.attribute_name=NULL;
// $$->left_value = *$1;
// $$->comp = CONTEXT->comp;
// $$->right_is_attr = 0;
// $$->right_attr.relation_name = NULL;
// $$->right_attr.attribute_name = NULL;
// $$->right_value = *$3;
}
|ID comOp ID
{
......@@ -458,15 +415,6 @@ condition:
Condition condition;
condition_init(&condition, CONTEXT->comp, 1, &left_attr, NULL, 1, &right_attr, NULL);
CONTEXT->conditions[CONTEXT->condition_length++] = condition;
// $$=( Condition *)malloc(sizeof( Condition));
// $$->left_is_attr = 1;
// $$->left_attr.relation_name=NULL;
// $$->left_attr.attribute_name=$1;
// $$->comp = CONTEXT->comp;
// $$->right_is_attr = 1;
// $$->right_attr.relation_name=NULL;
// $$->right_attr.attribute_name=$3;
}
|value comOp ID
{
......@@ -477,18 +425,6 @@ condition:
Condition condition;
condition_init(&condition, CONTEXT->comp, 0, NULL, left_value, 1, &right_attr, NULL);
CONTEXT->conditions[CONTEXT->condition_length++] = condition;
// $$=( Condition *)malloc(sizeof( Condition));
// $$->left_is_attr = 0;
// $$->left_attr.relation_name=NULL;
// $$->left_attr.attribute_name=NULL;
// $$->left_value = *$1;
// $$->comp=CONTEXT->comp;
// $$->right_is_attr = 1;
// $$->right_attr.relation_name=NULL;
// $$->right_attr.attribute_name=$3;
}
|ID DOT ID comOp value
{
......@@ -499,17 +435,6 @@ condition:
Condition condition;
condition_init(&condition, CONTEXT->comp, 1, &left_attr, NULL, 0, NULL, right_value);
CONTEXT->conditions[CONTEXT->condition_length++] = condition;
// $$=( Condition *)malloc(sizeof( Condition));
// $$->left_is_attr = 1;
// $$->left_attr.relation_name=$1;
// $$->left_attr.attribute_name=$3;
// $$->comp=CONTEXT->comp;
// $$->right_is_attr = 0; //属性值
// $$->right_attr.relation_name=NULL;
// $$->right_attr.attribute_name=NULL;
// $$->right_value =*$5;
}
|value comOp ID DOT ID
{
......@@ -521,16 +446,6 @@ condition:
Condition condition;
condition_init(&condition, CONTEXT->comp, 0, NULL, left_value, 1, &right_attr, NULL);
CONTEXT->conditions[CONTEXT->condition_length++] = condition;
// $$=( Condition *)malloc(sizeof( Condition));
// $$->left_is_attr = 0;//属性值
// $$->left_attr.relation_name=NULL;
// $$->left_attr.attribute_name=NULL;
// $$->left_value = *$1;
// $$->comp =CONTEXT->comp;
// $$->right_is_attr = 1;//属性
// $$->right_attr.relation_name = $3;
// $$->right_attr.attribute_name = $5;
}
|ID DOT ID comOp ID DOT ID
{
......@@ -542,14 +457,6 @@ condition:
Condition condition;
condition_init(&condition, CONTEXT->comp, 1, &left_attr, NULL, 1, &right_attr, NULL);
CONTEXT->conditions[CONTEXT->condition_length++] = condition;
// $$=( Condition *)malloc(sizeof( Condition));
// $$->left_is_attr = 1; //属性
// $$->left_attr.relation_name=$1;
// $$->left_attr.attribute_name=$3;
// $$->comp =CONTEXT->comp;
// $$->right_is_attr = 1; //属性
// $$->right_attr.relation_name=$5;
// $$->right_attr.attribute_name=$7;
}
;
......
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