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usql function to_string renamed to to_char

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vaclavt
2022-04-03 16:54:44 +02:00
parent aaeb54d534
commit 165438cdf3
7 changed files with 77 additions and 41 deletions
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2
tests/test.lsp
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@@ -1,6 +1,6 @@
(include "/usr/local/var/mlisp/ut.lsp")
(def local_time_offset 3600)
(def local_time_offset 7200)
;; prepare some code to be used in tests
(defn fact (n)

2
usql/parser.cpp
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@@ -3,7 +3,7 @@
namespace usql {
// TOOD handle premature eof
// TOOD handle premature eof
std::string column_type_name(const ColumnType type) {
if (type == ColumnType::integer_type) return "integer_type";

12
usql/parser.h
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@@ -126,8 +126,10 @@ struct ColDefNode : Node {
struct FunctionNode : Node {
enum class Type {
to_string,
to_char,
to_date,
to_int,
to_float,
date_add,
pp,
lower,
@@ -139,8 +141,10 @@ struct FunctionNode : Node {
};
static Type get_function(const std::string &str) {
if (str=="to_string") return Type::to_string;
if (str=="to_char") return Type::to_char;
if (str=="to_date") return Type::to_date;
if (str=="to_int") return Type::to_int;
if (str=="to_float") return Type::to_float;
if (str=="date_add") return Type::date_add;
if (str=="pp") return Type::pp;
if (str=="lower") return Type::lower;
@@ -154,8 +158,10 @@ struct FunctionNode : Node {
};
static std::string function_name(const Type type) {
if (type == Type::to_string) return "to_string";
if (type == Type::to_char) return "to_char";
if (type == Type::to_date) return "to_date";
if (type == Type::to_int) return "to_int";
if (type == Type::to_float) return "to_float";
if (type == Type::date_add) return "date_add";
if (type == Type::pp) return "pp";
if (type == Type::lower) return "lower";

4
usql/usql.cpp
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@@ -182,7 +182,9 @@ std::unique_ptr<ValueNode> USql::eval_function_value_node(Table *table, Row &row
if (fnc->function == FunctionNode::Type::lower) return lower_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::upper) return upper_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::to_date) return to_date_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::to_string) return to_string_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::to_char) return to_char_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::to_int) return to_int_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::to_float) return to_float_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::date_add) return date_add_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::pp) return pp_function(evaluatedPars);
if (fnc->function == FunctionNode::Type::count) return count_function(agg_func_value, evaluatedPars);

4
usql/usql.h
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@@ -75,7 +75,9 @@ private:
static std::unique_ptr<ValueNode> upper_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);
static std::unique_ptr<ValueNode> coalesce_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);
static std::unique_ptr<ValueNode> to_date_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);
static std::unique_ptr<ValueNode> to_string_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);
static std::unique_ptr<ValueNode> to_char_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);
static std::unique_ptr<ValueNode> to_int_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);
static std::unique_ptr<ValueNode> to_float_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);
static std::unique_ptr<ValueNode> date_add_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);
static std::unique_ptr<ValueNode> pp_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars);

22
usql/usql_dml.cpp
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@@ -217,7 +217,7 @@ ColDefNode USql::get_db_column_definition(Table *table, Node *node) {
throw Exception("Undefined table node - get_db_column_definition");
}
std::tuple<int, ColDefNode> USql::get_node_definition(Table *table, Node * node, const std::string & col_name, int col_order ) {
std::tuple<int, ColDefNode> USql::get_node_definition(Table *table, Node * node, const std::string &col_name, int col_order ) {
if (node->node_type == NodeType::database_value) {
ColDefNode src_col_def = get_db_column_definition(table, node);
ColDefNode col_def = ColDefNode{col_name, src_col_def.type, col_order, src_col_def.length, src_col_def.null};
@@ -226,9 +226,15 @@ std::tuple<int, ColDefNode> USql::get_node_definition(Table *table, Node * node,
} else if (node->node_type == NodeType::function) {
auto func_node = static_cast<FunctionNode *>(node);
if (func_node->function == FunctionNode::Type::to_string) {
if (func_node->function == FunctionNode::Type::to_char) {
ColDefNode col_def = ColDefNode{col_name, ColumnType::varchar_type, col_order, 32, true};
return std::make_tuple(FUNCTION_CALL, col_def);
} else if (func_node->function == FunctionNode::Type::to_int) {
ColDefNode col_def = ColDefNode{col_name, ColumnType::integer_type, col_order, 1, true};
return std::make_tuple(FUNCTION_CALL, col_def);
} else if (func_node->function == FunctionNode::Type::to_float) {
ColDefNode col_def = ColDefNode{col_name, ColumnType::float_type, col_order, 1, true};
return std::make_tuple(FUNCTION_CALL, col_def);
} else if (func_node->function == FunctionNode::Type::to_date) {
ColDefNode col_def = ColDefNode{col_name, ColumnType::integer_type, col_order, 1, true};
return std::make_tuple(FUNCTION_CALL, col_def);
@@ -243,18 +249,26 @@ std::tuple<int, ColDefNode> USql::get_node_definition(Table *table, Node * node,
// TODO handle cases here
if (func_node->params.empty()) throw Exception("Coalesce without parameters");
if (func_node->params[0]->node_type != NodeType::database_value) throw Exception("Coalesce first parameter must be database column");
ColDefNode tbl_col_def = get_db_column_definition(table, func_node->params[0].get());
ColDefNode col_def = ColDefNode{col_name, tbl_col_def.type, col_order, tbl_col_def.length, true};
return std::make_tuple(FUNCTION_CALL, col_def);
} else if (func_node->function == FunctionNode::Type::min || func_node->function == FunctionNode::Type::max) {
auto col_type= ColumnType::float_type;
auto col_type = ColumnType::float_type;
size_t col_len = 1;
auto & v = func_node->params[0];
auto &v = func_node->params[0];
if (v->node_type == NodeType::database_value) {
ColDefNode src_col_def = get_db_column_definition(table, v.get());
col_type = src_col_def.type;
col_len = src_col_def.length;
} else if (node->node_type == NodeType::function) {
std::tuple<int, ColDefNode> fun_type = get_node_definition(table, static_cast<Node*>(& *v), "", 0);
col_type = std::get<1>(fun_type).type;
col_len = std::get<1>(fun_type).length;
}
ColDefNode col_def = ColDefNode{col_name, col_type, col_order, col_len, true};
return std::make_tuple(FUNCTION_CALL, col_def);
} else if (func_node->function == FunctionNode::Type::count) {

14
usql/usql_function.cpp
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@@ -7,12 +7,24 @@
namespace usql {
std::unique_ptr<ValueNode> USql::to_string_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars) {
std::unique_ptr<ValueNode> USql::to_char_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars) {
if (evaluatedPars[0]->node_type == NodeType::int_value && evaluatedPars.size()==2) { // TODO when propper date is introduced
long date = evaluatedPars[0]->getDateValue();
std::string format = evaluatedPars[1]->getStringValue();
std::string formatted_date = date_to_string(date, format);
return std::make_unique<StringValueNode>(formatted_date);
} else {
return std::make_unique<StringValueNode>(evaluatedPars[0]->getStringValue());
}
}
std::unique_ptr<ValueNode> USql::to_int_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars) {
return std::make_unique<IntValueNode>(evaluatedPars[0]->getIntegerValue());
}
std::unique_ptr<ValueNode> USql::to_float_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars) {
return std::make_unique<DoubleValueNode>(evaluatedPars[0]->getDoubleValue());
}
std::unique_ptr<ValueNode> USql::to_date_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars) {