Struct MacroExpander 

pub struct MacroExpander {
    pub dispatcher: MacroDispatcher,
    /* private fields */
}

Core macro expansion engine

This struct provides the expansion logic that can be reused by any macro package. Each macro package creates its own instance, which will use that package’s local inventory of macros.

Fields

dispatcher: MacroDispatcher

Implementations

impl MacroExpander

pub fn new() -> Result<Self>

Create a new expander with the local registry populated from inventory

pub fn new_with_env(_env: Option<&Env>) -> Result<Self>

Create a new expander, optionally with a NAPI environment

pub fn with_config(config: MacroConfig, root_dir: PathBuf) -> Result<Self>

Create an expander with a specific config

pub fn with_config_and_env( config: MacroConfig, root_dir: PathBuf, _env: Option<&Env>, ) -> Result<Self>

Create an expander with a specific config and optional NAPI environment

pub fn set_keep_decorators(&mut self, keep: bool)

Control whether decorators are preserved in the expanded output.

pub fn expand_source( &self, source: &str, file_name: &str, ) -> Result<MacroExpansion>

Expand all macros in the source code (simple API for CLI usage)

pub fn expand( &self, source: &str, program: &Program, file_name: &str, ) -> Result<MacroExpansion>

Expand all macros found in the parsed program and return the updated source code.

Trait Implementations

impl Default for MacroExpander

fn default() -> Self

Returns the “default value” for a type.