main.go

// Copyright 2021-22 Rohit Awate
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package main

import (
	"commaql/compiler"
	"commaql/vm"
	"fmt"
	"os"
)

func main() {
	query := `
		SELECT pk, name, age
		FROM people
		WHERE age >= 23
	`

	c, _ := compiler.NewCompiler("people.csv")
	bytecode, errors := c.Compile(query)
	if len(errors) > 0 {
		for _, err := range errors {
			fmt.Println(err.Message)
		}

		os.Exit(1)
	}

	vm_ := vm.NewVM()
	resultSet := vm_.Run(*bytecode)

	for _, row := range resultSet.Meta {
		fmt.Println(row)
	}
}