define( function ( require, exports, module ) {
var Text = require( "char/text" ),
kity = require( "kity" ),
Expression = require( "expression/expression" ),
TextExpression = kity.createClass( 'TextExpression', {
base: require( "expression/expression" ),
constructor: function ( content ) {
this.callBase();
this.content = content + '';
this.setChildren( 0, new Text( this.content ) );
}
} );
// 注册文本表达式的打包函数
Expression.registerWrap( function ( operand ) {
var operandType = typeof operand;
if ( operandType === 'number' || operandType === 'string' ) {
operand = new TextExpression( operand );
}
return operand;
} );
return TextExpression;
} );
define( function ( require, exports, module ) {
var kity = require( "kity" ) ,
Expression = require( "expression/expression" ),
EmptyExpression = kity.createClass( 'EmptyExpression', {
base: Expression
} );
// 注册打包函数
Expression.registerWrap( function ( operand ) {
if ( operand === null || operand === undefined ) {
return new EmptyExpression();
}
} );
} );