var Stmt = require('./stmt');
var Value = require('./value');
var Field = require('./field');

/**
 * The equivalent of a SQL DML.
 */
module.exports = new Class({
	Extends: Stmt
	
	,field: []
	,expr: []

	,addSet(fieldName, value) {
		this.field.push(new Field({name: fieldName}));
		this.expr.push(new Value({value: value}));
	}

	,addExpr(fieldName, expr) {
		this.field.push(new Field({name: fieldName}));
		this.expr.push(expr);
	}

	,delSet() {
		this.field.splice(0, this.field.length);
		this.expr.splice(0, this.expr.length);
	}
});