/** Evaluate a boolean expression in executable SQL statement */
public void execBoolSql(HplsqlParser.Bool_exprContext ctx) {
StringBuilder sql = new StringBuilder();
if (ctx.T_OPEN_P() != null) {
sql.append("(");
sql.append(evalPop(ctx.bool_expr(0)).toString());
sql.append(")");
} else if (ctx.bool_expr_atom() != null) {
sql.append(evalPop(ctx.bool_expr_atom()).toString());
} else if (ctx.bool_expr_logical_operator() != null) {
sql.append(evalPop(ctx.bool_expr(0)).toString());
sql.append(" " + ctx.bool_expr_logical_operator().getText() + " ");
sql.append(evalPop(ctx.bool_expr(1)).toString());
}
exec.stackPush(sql);
}
/** Evaluate a boolean expression */
public void execBool(HplsqlParser.Bool_exprContext ctx) {
if (ctx.bool_expr_atom() != null) {
eval(ctx.bool_expr_atom());
return;
}
Var result = evalPop(ctx.bool_expr(0));
if (ctx.T_OPEN_P() != null) {
if (ctx.T_NOT() != null) {
result.negate();
}
} else if (ctx.bool_expr_logical_operator() != null) {
if (ctx.bool_expr_logical_operator().T_AND() != null) {
if (result.isTrue()) {
result = evalPop(ctx.bool_expr(1));
}
} else if (ctx.bool_expr_logical_operator().T_OR() != null) {
if (!result.isTrue()) {
result = evalPop(ctx.bool_expr(1));
}
}
}
exec.stackPush(result);
}