Struct Preprocessor 

pub struct Preprocessor { /* private fields */ }

The main C preprocessor struct

Implementations

impl Preprocessor

pub fn new() -> Self

Create a new preprocessor instance

pub fn with_config(config: &PreprocessorConfig) -> Self

Create a preprocessor with the given configuration

pub fn apply_config(&mut self, config: &PreprocessorConfig)

Apply configuration to the preprocessor

pub fn with_include_resolver<F>(self, f: F) -> Self

where F: Fn(&str) -> Option<String> + 'static,

Add a custom include resolver function

pub fn set_recursion_limit(&mut self, limit: usize)

Set the maximum recursion depth for macro expansion

pub fn set_current_file(&mut self, file: String)

Set the current file name for error reporting

pub fn define<S: AsRef<str>>( &mut self, name: S, params: Option<Vec<String>>, body: S, is_variadic: bool, )

Define a preprocessor macro

pub fn undef(&mut self, name: &str)

Remove a macro definition

pub fn get_macros(&self) -> &HashMap<String, Macro>

Get a reference to the defined macros

pub fn is_defined(&self, name: &str) -> bool

Check if a macro is defined

pub fn process(&mut self, input: &str) -> Result<String, PreprocessError>

Process the input C code and return the preprocessed result

Errors

Returns PreprocessError if there’s a malformed directive, macro recursion limit is exceeded, or conditional blocks are unterminated.

pub fn parse_expression(&self, expr: &str) -> Result<bool, PreprocessError>

Parse a preprocessor expression with full operator support

Errors

Returns PreprocessError if the expression is malformed or has invalid operators.

Trait Implementations

impl Default for Preprocessor

fn default() -> Self

Returns the “default value” for a type.