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HyriseSQLParser
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Merge pull request #1 from hyrise/master 

Update from original
This commit is contained in:
javrucebo 2018-01-22 18:19:26 +01:00 committed by GitHub
parent 59140d573e edaba87af7
commit 9872603fe7
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11 changed files with 1115 additions and 935 deletions
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2
Makefile
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@ -60,7 +60,7 @@ $(LIB_BUILD): $(LIB_OBJ)
$(LIBLINKER) $(LIB_LFLAGS) $(LIB_BUILD) $(LIB_OBJ)
$(SRCPARSER)/flex_lexer.o: $(SRCPARSER)/flex_lexer.cpp $(SRCPARSER)/bison_parser.cpp
$(CXX) $(LIB_CFLAGS) -c -o $@ $< -Wno-sign-compare -Wno-unneeded-internal-declaration
$(CXX) $(LIB_CFLAGS) -c -o $@ $< -Wno-sign-compare -Wno-unneeded-internal-declaration -Wno-register
%.o: %.cpp $(PARSER_CPP) $(LIB_H)
$(CXX) $(LIB_CFLAGS) -c -o $@ $<

8
src/parser/Makefile
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@ -1,9 +1,11 @@
# bison's version is too old on OSX, allow user to pass in custom path
BISON?=bison
all: bison_parser.cpp flex_lexer.cpp
bison_parser.cpp: bison_parser.y
@bison --version | head -n 1
bison bison_parser.y --output=bison_parser.cpp --defines=bison_parser.h --verbose
@$(BISON) --version | head -n 1
$(BISON) bison_parser.y --output=bison_parser.cpp --defines=bison_parser.h --verbose
flex_lexer.cpp: flex_lexer.l
@flex --version
@ -14,4 +16,4 @@ clean:
# Tests if the parser builds correctly and doesn't contain conflicts.
test:
! bison bison_parser.y -v --output=conflict_test.cpp 2>&1 | grep "conflict" >&2
! $(BISON) bison_parser.y -v --output=conflict_test.cpp 2>&1 | grep "conflict" >&2

1825
src/parser/bison_parser.cpp
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File diff suppressed because it is too large Load Diff

11
src/parser/bison_parser.h
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@ -48,7 +48,7 @@
extern int hsql_debug;
#endif
/* "%code requires" blocks. */
#line 35 "bison_parser.y" /* yacc.c:1909 */
#line 35 "bison_parser.y" /* yacc.c:1915 */
// %code requires block
@ -62,6 +62,7 @@ extern int hsql_debug;
yylloc->first_column = yylloc->last_column; \
for(int i = 0; yytext[i] != '\0'; i++) { \
yylloc->total_column++; \
yylloc->string_length++; \
if(yytext[i] == '\n') { \
yylloc->last_line++; \
yylloc->last_column = 0; \
@ -71,7 +72,7 @@ extern int hsql_debug;
} \
}
#line 75 "bison_parser.h" /* yacc.c:1909 */
#line 76 "bison_parser.h" /* yacc.c:1915 */
/* Token type. */
#ifndef HSQL_TOKENTYPE
@ -217,7 +218,7 @@ extern int hsql_debug;
union HSQL_STYPE
{
#line 93 "bison_parser.y" /* yacc.c:1909 */
#line 95 "bison_parser.y" /* yacc.c:1915 */
double fval;
int64_t ival;
@ -236,7 +237,7 @@ union HSQL_STYPE
hsql::PrepareStatement* prep_stmt;
hsql::ExecuteStatement* exec_stmt;
hsql::ShowStatement* show_stmt;
hsql::TableName table_name;
hsql::TableRef* table;
hsql::Expr* expr;
@ -256,7 +257,7 @@ union HSQL_STYPE
std::vector<hsql::Expr*>* expr_vec;
std::vector<hsql::OrderDescription*>* order_vec;
#line 260 "bison_parser.h" /* yacc.c:1909 */
#line 261 "bison_parser.h" /* yacc.c:1915 */
};
typedef union HSQL_STYPE HSQL_STYPE;

47
src/parser/bison_parser.y
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@ -45,6 +45,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const cha
yylloc->first_column = yylloc->last_column; \
for(int i = 0; yytext[i] != '\0'; i++) { \
yylloc->total_column++; \
yylloc->string_length++; \
if(yytext[i] == '\n') { \
yylloc->last_line++; \
yylloc->last_column = 0; \
@ -76,6 +77,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const cha
@$.first_line = 0;
@$.last_line = 0;
@$.total_column = 0;
@$.string_length = 0;
};
@ -108,7 +110,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const cha
hsql::PrepareStatement* prep_stmt;
hsql::ExecuteStatement* exec_stmt;
hsql::ShowStatement* show_stmt;
hsql::TableName table_name;
hsql::TableRef* table;
hsql::Expr* expr;
@ -133,7 +135,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const cha
/*********************************
** Descrutor symbols
*********************************/
%destructor { } <fval> <ival> <uval> <bval> <order_type>
%destructor { } <fval> <ival> <uval> <bval> <order_type>
%destructor { free( ($$.name) ); free( ($$.schema) ); } <table_name>
%destructor { free( ($$) ); } <sval>
%destructor {
@ -185,7 +187,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const cha
%type <delete_stmt> delete_statement truncate_statement
%type <update_stmt> update_statement
%type <drop_stmt> drop_statement
%type <show_stmt> show_statement
%type <show_stmt> show_statement
%type <table_name> table_name
%type <sval> opt_alias alias file_path prepare_target_query
%type <bval> opt_not_exists opt_exists opt_distinct
@ -195,7 +197,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const cha
%type <expr> expr operand scalar_expr unary_expr binary_expr logic_expr exists_expr
%type <expr> function_expr between_expr expr_alias param_expr
%type <expr> column_name literal int_literal num_literal string_literal
%type <expr> comp_expr opt_where join_condition opt_having case_expr in_expr hint
%type <expr> comp_expr opt_where join_condition opt_having case_expr case_list in_expr hint
%type <expr> array_expr array_index null_literal
%type <limit> opt_limit opt_top
%type <order> order_desc
@ -263,8 +265,18 @@ input:
statement_list:
statement { $$ = new std::vector<SQLStatement*>(); $$->push_back($1); }
| statement_list ';' statement { $1->push_back($3); $$ = $1; }
statement {
$1->stringLength = yylloc.string_length;
yylloc.string_length = 0;
$$ = new std::vector<SQLStatement*>();
$$->push_back($1);
}
| statement_list ';' statement {
$3->stringLength = yylloc.string_length;
yylloc.string_length = 0;
$1->push_back($3);
$$ = $1;
}
;
statement:
@ -471,7 +483,7 @@ opt_exists:
IF EXISTS { $$ = true; }
| /* empty */ { $$ = false; }
;
/******************************
* Delete Statement / Truncate statement
* DELETE FROM students WHERE grade > 3.0
@ -781,11 +793,18 @@ in_expr:
| operand NOT IN '(' select_no_paren ')' { $$ = Expr::makeOpUnary(kOpNot, Expr::makeInOperator($1, $5)); }
;
// TODO: allow no else specified
// CASE grammar based on: flex & bison by John Levine
// https://www.safaribooksonline.com/library/view/flex-bison/9780596805418/ch04.html#id352665
case_expr:
CASE WHEN expr THEN operand END { $$ = Expr::makeCase($3, $5); }
|
CASE WHEN expr THEN operand ELSE operand END { $$ = Expr::makeCase($3, $5, $7); }
CASE expr case_list END { $$ = Expr::makeCase($2, $3, nullptr); }
| CASE expr case_list ELSE expr END { $$ = Expr::makeCase($2, $3, $5); }
| CASE case_list END { $$ = Expr::makeCase(nullptr, $2, nullptr); }
| CASE case_list ELSE expr END { $$ = Expr::makeCase(nullptr, $2, $4); }
;
case_list:
WHEN expr THEN expr { $$ = Expr::makeCaseList(Expr::makeCaseListElement($2, $4)); }
| case_list WHEN expr THEN expr { $$ = Expr::caseListAppend($1, Expr::makeCaseListElement($3, $5)); }
;
exists_expr:
@ -865,10 +884,10 @@ param_expr:
******************************/
table_ref:
table_ref_atomic
| table_ref_atomic ',' table_ref_commalist {
$3->push_back($1);
| table_ref_commalist ',' table_ref_atomic {
$1->push_back($3);
auto tbl = new TableRef(kTableCrossProduct);
tbl->list = $3;
tbl->list = $1;
$$ = tbl;
}
;

3
src/parser/parser_typedef.h
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@ -22,6 +22,9 @@ struct HSQL_CUST_LTYPE {
int total_column;
// Length of the string in the SQL query string
int string_length;
// Parameters.
// int param_id;
std::vector<void*> param_list;

31
src/sql/Expr.cpp
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@ -68,22 +68,35 @@ namespace hsql {
return e;
}
Expr* Expr::makeCase(Expr* expr, Expr* then) {
Expr* Expr::makeCaseList(Expr* caseListElement) {
Expr* e = new Expr(kExprOperator);
e->expr = expr;
e->opType = kOpCase;
e->opType = kOpCaseList;
e->exprList = new std::vector<Expr*>();
e->exprList->push_back(then);
e->exprList->push_back(caseListElement);
return e;
}
Expr* Expr::makeCase(Expr* expr, Expr* then, Expr* other) {
Expr* Expr::makeCaseListElement(Expr* when, Expr* then) {
Expr* e = new Expr(kExprOperator);
e->opType = kOpCaseListElement;
e->expr = when;
e->expr2 = then;
return e;
}
Expr* Expr::caseListAppend(Expr* caseList, Expr* caseListElement) {
caseList->exprList->push_back(caseListElement);
return caseList;
}
Expr* Expr::makeCase(Expr* expr, Expr* caseList, Expr* elseExpr) {
Expr* e = new Expr(kExprOperator);
e->expr = expr;
e->opType = kOpCase;
e->exprList = new std::vector<Expr*>();
e->exprList->push_back(then);
e->exprList->push_back(other);
e->expr = expr;
e->expr2 = elseExpr;
e->exprList = caseList->exprList;
caseList->exprList = nullptr;
delete caseList;
return e;
}

18
src/sql/Expr.h
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@ -25,16 +25,22 @@ namespace hsql {
kExprSelect,
kExprHint,
kExprArray,
kExprArrayIndex
kExprArrayIndex,
kExprCaseList,
kExprCaseListElement
};
// Operator types. These are important for expressions of type kExprOperator.
enum OperatorType {
kOpNone,
// Ternary operators
// Ternary operator
kOpBetween,
// n-nary special case
kOpCase,
kOpCaseList, // Contains n >= 1 kExprCaseListElement in its exprList
kOpCaseListElement, // `WHEN expr THEN expr`
// Binary operators.
kOpPlus,
@ -113,9 +119,13 @@ namespace hsql {
static Expr* makeBetween(Expr* expr, Expr* left, Expr* right);
static Expr* makeCase(Expr* expr, Expr* then);
static Expr* makeCaseList(Expr* caseListElement);
static Expr* makeCase(Expr* expr, Expr* then, Expr* other);
static Expr* makeCaseListElement(Expr* when, Expr* then);
static Expr* caseListAppend(Expr* caseList, Expr* caseListElement);
static Expr* makeCase(Expr* expr, Expr* when, Expr* elseExpr);
static Expr* makeLiteral(int64_t val);

3
src/sql/SQLStatement.h
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@ -37,6 +37,9 @@ namespace hsql {
// Shorthand for isType(type).
bool is(StatementType type) const;
// Length of the string in the SQL query string
size_t stringLength;
std::vector<Expr*>* hints;
private:

91
test/select_tests.cpp
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@ -214,9 +214,74 @@ TEST(SelectCaseWhen) {
ASSERT_NOTNULL(caseExpr);
ASSERT(caseExpr->isType(kExprOperator));
ASSERT_EQ(caseExpr->opType, kOpCase);
ASSERT(caseExpr->expr->isType(kExprOperator));
ASSERT_EQ(caseExpr->expr->opType, kOpEquals);
ASSERT_NULL(caseExpr->expr);
ASSERT_NOTNULL(caseExpr->exprList);
ASSERT_NOTNULL(caseExpr->expr2);
ASSERT_EQ(caseExpr->exprList->size(), 1);
ASSERT(caseExpr->expr2->isType(kExprLiteralInt));
Expr* whenExpr = caseExpr->exprList->at(0);
ASSERT(whenExpr->expr->isType(kExprOperator));
ASSERT_EQ(whenExpr->expr->opType, kOpEquals);
ASSERT(whenExpr->expr->expr->isType(kExprColumnRef));
ASSERT(whenExpr->expr->expr2->isType(kExprLiteralString));
}
TEST(SelectCaseWhenWhen) {
TEST_PARSE_SINGLE_SQL(
"SELECT CASE WHEN x = 1 THEN 1 WHEN 1.25 < x THEN 2 END FROM test;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_EQ(stmt->selectList->size(), 1);
Expr* caseExpr = stmt->selectList->at(0);
ASSERT_NOTNULL(caseExpr);
ASSERT(caseExpr->isType(kExprOperator));
ASSERT_EQ(caseExpr->opType, kOpCase);
// CASE [expr] [exprList] [expr2]
// [expr] [expr]
// [expr] [expr2] [expr] [expr2]
// CASE (null) WHEN X = 1 THEN 1 WHEN 1.25 < x THEN 2 (null)
ASSERT_NULL(caseExpr->expr);
ASSERT_NOTNULL(caseExpr->exprList);
ASSERT_NULL(caseExpr->expr2);
ASSERT_EQ(caseExpr->exprList->size(), 2);
Expr* whenExpr = caseExpr->exprList->at(0);
ASSERT_EQ(whenExpr->expr->opType, kOpEquals);
ASSERT(whenExpr->expr->expr->isType(kExprColumnRef));
ASSERT(whenExpr->expr->expr2->isType(kExprLiteralInt));
Expr* whenExpr2 = caseExpr->exprList->at(1);
ASSERT_EQ(whenExpr2->expr->opType, kOpLess);
ASSERT(whenExpr2->expr->expr->isType(kExprLiteralFloat));
ASSERT(whenExpr2->expr->expr2->isType(kExprColumnRef));
}
TEST(SelectCaseValueWhenWhenElse) {
TEST_PARSE_SINGLE_SQL(
"SELECT CASE x WHEN 1 THEN 0 WHEN 2 THEN 3 WHEN 8 THEN 7 ELSE 4 END FROM test;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_EQ(stmt->selectList->size(), 1);
Expr* caseExpr = stmt->selectList->at(0);
ASSERT_NOTNULL(caseExpr);
ASSERT(caseExpr->isType(kExprOperator));
ASSERT_EQ(caseExpr->opType, kOpCase);
ASSERT_NOTNULL(caseExpr->expr);
ASSERT_NOTNULL(caseExpr->exprList);
ASSERT_NOTNULL(caseExpr->expr2);
ASSERT_EQ(caseExpr->exprList->size(), 3);
ASSERT(caseExpr->expr->isType(kExprColumnRef));
Expr* whenExpr = caseExpr->exprList->at(2);
ASSERT(whenExpr->expr->isType(kExprLiteralInt));
ASSERT_EQ(whenExpr->expr2->ival, 7);
}
TEST(SelectJoin) {
@ -260,3 +325,25 @@ TEST(SelectJoin) {
ASSERT_STREQ(inner_join->condition->expr2->table, "City");
ASSERT_STREQ(inner_join->condition->expr2->name, "id");
}
TEST(SelectColumnOrder) {
TEST_PARSE_SINGLE_SQL(
"SELECT *\
FROM a,\
(SELECT a AS b FROM a) b,\
(SELECT a AS c FROM a) c,\
(SELECT a AS d FROM a) d;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_EQ(stmt->fromTable->list->size(), 4);
// Make sure the order of the table list is corrects
ASSERT_STREQ(stmt->fromTable->list->at(0)->name, "a");
ASSERT_STREQ(stmt->fromTable->list->at(1)->alias, "b");
ASSERT_STREQ(stmt->fromTable->list->at(2)->alias, "c");
ASSERT_STREQ(stmt->fromTable->list->at(3)->alias, "d");
}

11
test/sql_tests.cpp
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@ -213,4 +213,15 @@ TEST(HintTest) {
ASSERT_EQ(10, stmt->hints->at(1)->exprList->at(0)->ival);
}
TEST(StringLengthTest) {
TEST_PARSE_SQL_QUERY(
"SELECT * FROM bar; INSERT INTO foo VALUES (4);\t\n SELECT * FROM foo;",
result,
3);
ASSERT_EQ(result.getStatement(0)->stringLength, 18);
ASSERT_EQ(result.getStatement(1)->stringLength, 28);
ASSERT_EQ(result.getStatement(2)->stringLength, 21);
}
TEST_MAIN();