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Console

rama::js

Struct Console 

pub struct Console { /* private fields */ }
Available on crate features js and std only.
Expand description

The console host object: nothing more than a regular global with the well-known console methods as host functions.

Every runtime injects Console::void by default, so console calls always work and silently drop their arguments. Register your own via JsRuntimeBuilder::with_global to replace it: Console::trace routes all methods through rama’s standard tracing support, and either constructor is just a starting point whose individual methods can be overwritten builder-style with any host function.

Implementations§

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impl Console

pub fn void() -> Console

A console which silently drops all messages (the default).

pub fn trace() -> Console

A console which routes all messages through rama’s standard tracing support, at the matching level (console.log traces at info level).

These methods never throw: arguments which cannot cross the js boundary (symbols, functions, cyclic objects, …) are logged as <...> placeholders instead. Control characters in logged text are escaped, so scripts cannot forge log lines or emit terminal escape sequences.

pub fn with_log<A, F>(self, f: F) -> Console
where F: JsFn<A>,

Overwrite the console.log method with the given host function.

pub fn set_log<A, F>(&mut self, f: F) -> &mut Console
where F: JsFn<A>,

Overwrite the console.log method with the given host function.

pub fn with_debug<A, F>(self, f: F) -> Console
where F: JsFn<A>,

Overwrite the console.debug method with the given host function.

pub fn set_debug<A, F>(&mut self, f: F) -> &mut Console
where F: JsFn<A>,

Overwrite the console.debug method with the given host function.

pub fn with_info<A, F>(self, f: F) -> Console
where F: JsFn<A>,

Overwrite the console.info method with the given host function.

pub fn set_info<A, F>(&mut self, f: F) -> &mut Console
where F: JsFn<A>,

Overwrite the console.info method with the given host function.

pub fn with_warn<A, F>(self, f: F) -> Console
where F: JsFn<A>,

Overwrite the console.warn method with the given host function.

pub fn set_warn<A, F>(&mut self, f: F) -> &mut Console
where F: JsFn<A>,

Overwrite the console.warn method with the given host function.

pub fn with_error<A, F>(self, f: F) -> Console
where F: JsFn<A>,

Overwrite the console.error method with the given host function.

pub fn set_error<A, F>(&mut self, f: F) -> &mut Console
where F: JsFn<A>,

Overwrite the console.error method with the given host function.

Trait Implementations§

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impl Debug for Console

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for Console

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fn default() -> Console

Returns the “default value” for a type. Read more
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impl IntoJsGlobal for Console

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fn into_global_entry(self) -> JsGlobal

Lower into the global registration entry.

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