Statement.hpp

Go to the documentation of this file.

 
 
#pragma once
 
#include <cstddef>
#include <optional>
#include <string>
#include <string_view>
#include <variant>
#include <vector>
 
namespace tinysql {
 
struct SelectItem {
    enum class Kind {
        Star,     
        Column,   
        Literal,  
    };
    Kind kind;         
    std::string text;  
};
 
struct Condition {
    std::string column;  
    std::string op;      
    std::string value;   
};
 
struct SelectStmt {
    std::vector<SelectItem> items;   
    std::string table;               
    std::optional<Condition> where;  
};
 
struct InsertStmt {
    std::string table;                
    std::vector<std::string> values;  
};
 
struct DeleteStmt {
    std::string table;  
    Condition where;    
};
 
struct Assignment {
    std::string column;  
    std::string value;   
};
 
struct UpdateStmt {
    std::string table;                    
    std::vector<Assignment> assignments;  
    Condition where;                      
};
 
struct ColumnFormatStmt {
    std::string column;  
    std::size_t width;   
};
 
struct ColumnDefinition {
    std::string name;   
    std::string type;   
    std::size_t width;  
};
 
struct CreateTableStmt {
    std::string table;                      
    std::vector<ColumnDefinition> columns;  
};
 
struct DescribeStmt {
    std::optional<std::string> table;  
};
 
struct CommentStmt {};
 
using Statement =
    std::variant<SelectStmt, InsertStmt, UpdateStmt, DeleteStmt, CreateTableStmt, ColumnFormatStmt, DescribeStmt,
                 CommentStmt>;
 
Statement parseStatement(std::string_view sql);
 
std::vector<std::string> splitStatements(std::string_view script);
 
}  // namespace tinysql