Struct ExpressionEvaluator 

pub struct ExpressionEvaluator { /* private fields */ }

表达式求值器，用于处理工作流中的变量和表达式

Implementations

impl ExpressionEvaluator

pub fn new() -> Self

创建新的表达式求值器

pub fn set_env_vars(&mut self, env_vars: HashMap<String, String>)

设置环境变量

pub fn set_flow_vars(&mut self, flow_vars: HashMap<String, Value>)

设置流程变量

pub fn set_context_var<S: AsRef<str>>(&mut self, key: S, value: Value)

设置上下文变量

pub fn get_context_var<S: AsRef<str>>(&self, key: S) -> Option<&Value>

获取上下文变量

pub fn evaluate(&self, expression: &str) -> Result<Value>

求值表达式字符串

pub fn evaluate_condition(&self, condition: &str) -> Result<bool>

求值条件表达式，返回布尔值

Trait Implementations

impl Clone for ExpressionEvaluator

fn clone(&self) -> ExpressionEvaluator

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for ExpressionEvaluator

fn default() -> Self

Returns the “default value” for a type.