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rename operators to match constant naming style. Move the enum out of Expr

This commit is contained in:
Pedro Flemming 2017-04-06 17:25:47 +02:00
parent 137f273410
commit eddd799c26
6 changed files with 62 additions and 61 deletions
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24
src/parser/bison_parser.y
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@ -651,8 +651,8 @@ scalar_expr:
;
unary_expr:
'-' operand { $$ = Expr::makeOpUnary(Expr::UMINUS, $2); }
| NOT operand { $$ = Expr::makeOpUnary(Expr::NOT, $2); }
'-' operand { $$ = Expr::makeOpUnary(kOpMinus, $2); }
| NOT operand { $$ = Expr::makeOpUnary(kOpNot, $2); }
;
binary_expr:
@ -663,20 +663,20 @@ binary_expr:
| operand '*' operand { $$ = Expr::makeOpBinary($1, '*', $3); }
| operand '%' operand { $$ = Expr::makeOpBinary($1, '%', $3); }
| operand '^' operand { $$ = Expr::makeOpBinary($1, '^', $3); }
| operand LIKE operand { $$ = Expr::makeOpBinary($1, Expr::LIKE, $3); }
| operand NOT LIKE operand { $$ = Expr::makeOpBinary($1, Expr::NOT_LIKE, $4); }
| operand LIKE operand { $$ = Expr::makeOpBinary($1, kOpLike, $3); }
| operand NOT LIKE operand { $$ = Expr::makeOpBinary($1, kOpNotLike, $4); }
;
logic_expr:
expr AND expr { $$ = Expr::makeOpBinary($1, Expr::AND, $3); }
| expr OR expr { $$ = Expr::makeOpBinary($1, Expr::OR, $3); }
expr AND expr { $$ = Expr::makeOpBinary($1, kOpAnd, $3); }
| expr OR expr { $$ = Expr::makeOpBinary($1, kOpOr, $3); }
;
in_expr:
operand IN '(' expr_list ')' { $$ = Expr::makeInOperator($1, $4); }
| operand NOT IN '(' expr_list ')' { $$ = Expr::makeOpUnary(Expr::NOT, Expr::makeInOperator($1, $5)); }
| operand NOT IN '(' expr_list ')' { $$ = Expr::makeOpUnary(kOpNot, Expr::makeInOperator($1, $5)); }
| operand IN '(' select_no_paren ')' { $$ = Expr::makeInOperator($1, $4); }
| operand NOT IN '(' select_no_paren ')' { $$ = Expr::makeOpUnary(Expr::NOT, Expr::makeInOperator($1, $5)); }
| operand NOT IN '(' select_no_paren ')' { $$ = Expr::makeOpUnary(kOpNot, Expr::makeInOperator($1, $5)); }
;
// TODO: allow no else specified
@ -686,16 +686,16 @@ case_expr:
exists_expr:
EXISTS '(' select_no_paren ')' { $$ = Expr::makeExists($3); }
| NOT EXISTS '(' select_no_paren ')' { $$ = Expr::makeOpUnary(Expr::NOT, Expr::makeExists($4)); }
| NOT EXISTS '(' select_no_paren ')' { $$ = Expr::makeOpUnary(kOpNot, Expr::makeExists($4)); }
;
comp_expr:
operand '=' operand { $$ = Expr::makeOpBinary($1, '=', $3); }
| operand NOTEQUALS operand { $$ = Expr::makeOpBinary($1, Expr::NOT_EQUALS, $3); }
| operand NOTEQUALS operand { $$ = Expr::makeOpBinary($1, kOpNotEquals, $3); }
| operand '<' operand { $$ = Expr::makeOpBinary($1, '<', $3); }
| operand '>' operand { $$ = Expr::makeOpBinary($1, '>', $3); }
| operand LESSEQ operand { $$ = Expr::makeOpBinary($1, Expr::LESS_EQ, $3); }
| operand GREATEREQ operand { $$ = Expr::makeOpBinary($1, Expr::GREATER_EQ, $3); }
| operand LESSEQ operand { $$ = Expr::makeOpBinary($1, kOpLessEq, $3); }
| operand GREATEREQ operand { $$ = Expr::makeOpBinary($1, kOpGreaterEq, $3); }
;
function_expr:

14
src/sql/Expr.cpp
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@ -51,7 +51,7 @@ namespace hsql {
Expr* Expr::makeOpBinary(Expr* expr1, char op, Expr* expr2) {
Expr* e = new Expr(kExprOperator);
e->opType = SIMPLE_OP;
e->opType = kOpSimple;
e->opChar = op;
e->expr = expr1;
e->expr2 = expr2;
@ -61,7 +61,7 @@ namespace hsql {
Expr* Expr::makeBetween(Expr* expr, Expr* left, Expr* right) {
Expr* e = new Expr(kExprOperator);
e->expr = expr;
e->opType = BETWEEN;
e->opType = kOpBetween;
e->exprList = new std::vector<Expr*>();
e->exprList->push_back(left);
e->exprList->push_back(right);
@ -71,7 +71,7 @@ namespace hsql {
Expr* Expr::makeCase(Expr* expr, Expr* then, Expr* other) {
Expr* e = new Expr(kExprOperator);
e->expr = expr;
e->opType = CASE;
e->opType = kOpCase;
e->exprList = new std::vector<Expr*>();
e->exprList->push_back(then);
e->exprList->push_back(other);
@ -132,14 +132,14 @@ namespace hsql {
Expr* Expr::makeExists(SelectStatement* select) {
Expr* e = new Expr(kExprOperator);
e->opType = EXISTS;
e->opType = kOpExists;
e->select = select;
return e;
}
Expr* Expr::makeInOperator(Expr* expr, std::vector<Expr*>* exprList) {
Expr* e = new Expr(kExprOperator);
e->opType = IN;
e->opType = kOpIn;
e->expr = expr;
e->exprList = exprList;
@ -148,7 +148,7 @@ namespace hsql {
Expr* Expr::makeInOperator(Expr* expr, SelectStatement* select) {
Expr* e = new Expr(kExprOperator);
e->opType = IN;
e->opType = kOpIn;
e->expr = expr;
e->select = select;
@ -177,7 +177,7 @@ namespace hsql {
}
bool Expr::isSimpleOp() {
return opType == SIMPLE_OP;
return opType == kOpSimple;
}
bool Expr::isSimpleOp(char op) {

43
src/sql/Expr.h
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@ -24,41 +24,42 @@ namespace hsql {
kExprSelect
};
typedef struct Expr Expr;
// Represents SQL expressions (i.e. literals, operators, column_refs).
// TODO: When destructing a placeholder expression, we might need to alter the placeholder_list.
struct Expr {
// Operator types. These are important for expressions of type kExprOperator.
// Trivial types are those that can be described by a single character e.g:
// + - * / < > = %
// Non-trivial are: <> <= >= LIKE ISNULL NOT
enum OperatorType {
NONE,
kOpNone,
// Ternary operators
BETWEEN,
CASE,
kOpBetween,
kOpCase,
// Binary operators.
SIMPLE_OP,
NOT_EQUALS,
LESS_EQ,
GREATER_EQ,
LIKE,
NOT_LIKE,
AND,
OR,
IN,
// Simple operators are identified by the opChar field (e.g. =, >, <).
kOpSimple,
kOpNotEquals,
kOpLessEq,
kOpGreaterEq,
kOpLike,
kOpNotLike,
kOpAnd,
kOpOr,
kOpIn,
// Unary operators.
NOT,
UMINUS,
ISNULL,
EXISTS
kOpNot,
kOpMinus,
kOpIsNull,
kOpExists
};
typedef struct Expr Expr;
// Represents SQL expressions (i.e. literals, operators, column_refs).
// TODO: When destructing a placeholder expression, we might need to alter the placeholder_list.
struct Expr {
Expr(ExprType type);

8
src/sqlhelper.cpp
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@ -63,16 +63,16 @@ namespace hsql {
}
switch (expr->opType) {
case Expr::SIMPLE_OP:
case kOpSimple:
inprintC(expr->opChar, numIndent);
break;
case Expr::AND:
case kOpAnd:
inprint("AND", numIndent);
break;
case Expr::OR:
case kOpOr:
inprint("OR", numIndent);
break;
case Expr::NOT:
case kOpNot:
inprint("NOT", numIndent);
break;
default:

8
test/select_tests.cpp
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@ -144,7 +144,7 @@ TEST(SelectBetweenTest) {
Expr* where = stmt->whereClause;
ASSERT_NOTNULL(where);
ASSERT(where->isType(kExprOperator));
ASSERT_EQ(where->opType, Expr::BETWEEN);
ASSERT_EQ(where->opType, kOpBetween);
ASSERT_STREQ(where->expr->getName(), "grade");
ASSERT(where->expr->isType(kExprColumnRef));
@ -169,7 +169,7 @@ TEST(SelectConditionalSelectTest) {
Expr* where = stmt->whereClause;
ASSERT_NOTNULL(where);
ASSERT(where->isType(kExprOperator));
ASSERT_EQ(where->opType, Expr::AND);
ASSERT_EQ(where->opType, kOpAnd);
// a = (SELECT ...)
Expr* cond1 = where->expr;
@ -189,7 +189,7 @@ TEST(SelectConditionalSelectTest) {
// EXISTS (SELECT ...)
Expr* cond2 = where->expr2;
ASSERT_EQ(cond2->opType, Expr::EXISTS);
ASSERT_EQ(cond2->opType, kOpExists);
ASSERT_NOTNULL(cond2->select);
SelectStatement* ex_select = cond2->select;
@ -216,7 +216,7 @@ TEST(SelectCaseWhen) {
Expr* caseExpr = func->exprList->at(0);
ASSERT_NOTNULL(caseExpr);
ASSERT(caseExpr->isType(kExprOperator));
ASSERT_EQ(caseExpr->opType, Expr::CASE);
ASSERT_EQ(caseExpr->opType, kOpCase);
ASSERT(caseExpr->expr->isType(kExprOperator));
ASSERT(caseExpr->expr->isSimpleOp('='));
ASSERT_EQ(caseExpr->exprList->size(), 2);

6
test/tpc_h_tests.cpp
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@ -69,18 +69,18 @@ TEST(TPCHQueryDetailTest) {
Expr* where = select20->whereClause;
ASSERT_NOTNULL(where);
ASSERT(where->isType(kExprOperator));
ASSERT_EQ(where->opType, Expr::AND);
ASSERT_EQ(where->opType, kOpAnd);
Expr* andExpr2 = where->expr;
ASSERT_NOTNULL(andExpr2);
ASSERT(andExpr2->isType(kExprOperator));
ASSERT_EQ(andExpr2->opType, Expr::AND);
ASSERT_EQ(andExpr2->opType, kOpAnd);
// Test IN expression.
Expr* inExpr = andExpr2->expr;
ASSERT_NOTNULL(inExpr);
ASSERT(inExpr->isType(kExprOperator));
ASSERT_EQ(inExpr->opType, Expr::IN);
ASSERT_EQ(inExpr->opType, kOpIn);
ASSERT_STREQ(inExpr->expr->getName(), "S_SUPPKEY");
ASSERT_NOTNULL(inExpr->select);