Struct SessionBuilder 

pub struct SessionBuilder { /* private fields */ }

Session builder.

Implementations

impl SessionBuilder

pub fn dcx(self, dcx: DiagCtxt) -> SessionBuilder

Sets the diagnostic context.

If opts is set this will default to DiagCtxt::from_opts, otherwise this is required.

See also the with_*_emitter* methods.

pub fn source_map(self, source_map: Arc<SourceMap>) -> SessionBuilder

Sets the source map.

pub fn opts(self, opts: Opts) -> SessionBuilder

Sets the compiler options.

pub fn with_test_emitter(self) -> SessionBuilder

Sets the diagnostic context to a test emitter.

pub fn with_stderr_emitter(self) -> SessionBuilder

Sets the diagnostic context to a stderr emitter.

pub fn with_stderr_emitter_and_color( self, color_choice: ColorChoice, ) -> SessionBuilder

Sets the diagnostic context to a stderr emitter and a color choice.

pub fn with_buffer_emitter(self, color_choice: ColorChoice) -> SessionBuilder

Sets the diagnostic context to a human emitter that emits diagnostics to a local buffer.

pub fn with_silent_emitter(self, fatal_note: Option<String>) -> SessionBuilder

Sets the diagnostic context to a silent emitter.

pub fn single_threaded(self) -> SessionBuilder

Sets the number of threads to use for parallelism to 1.

pub fn threads(self, threads: usize) -> SessionBuilder

Sets the number of threads to use for parallelism. Zero specifies the number of logical cores.

pub fn build(self) -> Session

Consumes the builder to create a new session.

The diagnostics context must be set before calling this method, either by calling dcx or by using one of the provided helper methods, like with_stderr_emitter.

Panics

Panics if:

• the diagnostics context is not set
• the source map in the diagnostics context does not match the one set in the builder

Trait Implementations

impl Default for SessionBuilder

fn default() -> SessionBuilder

Returns the “default value” for a type.