Trait TemplateEngine 

pub trait TemplateEngine: Send + Sync {
    // Required methods
    fn exists(&self, template: &str) -> bool;
    fn fetch(
        &self,
        template: &str,
        data: &HashMap<String, Value>,
    ) -> Result<String, ViewError>;
    fn display(
        &self,
        content: &str,
        data: &HashMap<String, Value>,
    ) -> Result<String, ViewError>;
    fn set_config(&mut self, config: ViewConfig);
    fn get_config(&self, name: &str) -> Option<Value>;
    fn as_any(&self) -> &(dyn Any + 'static);
}

模板引擎接口（对齐 PHP think\contract\TemplateHandlerInterface）

PHP 接口方法：

• exists(string $template): bool
• fetch(string $template, array $data = []): void（PHP 用 echo，Rust 返回 String）
• display(string $content, array $data = []): void（PHP 用 echo，Rust 返回 String）
• config(array $config): void
• getConfig(string $name): mixed

Required Methods

fn exists(&self, template: &str) -> bool

模板是否存在（对齐 PHP exists）

fn fetch( &self, template: &str, data: &HashMap<String, Value>, ) -> Result<String, ViewError>

渲染模板文件（对齐 PHP fetch）

fn display( &self, content: &str, data: &HashMap<String, Value>, ) -> Result<String, ViewError>

渲染字符串内容（对齐 PHP display）

fn set_config(&mut self, config: ViewConfig)

设置配置（对齐 PHP config）

fn get_config(&self, name: &str) -> Option<Value>

读取配置（对齐 PHP getConfig）

fn as_any(&self) -> &(dyn Any + 'static)

返回 &dyn Any 以支持 downcast（Rust 特有，无 PHP 对应）

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl TemplateEngine for SimpleTemplateEngine