Struct Codegen 

pub struct Codegen<'a> { /* private fields */ }

A code generator for printing JavaScript and TypeScript code.

Example

use oxc_codegen::{Codegen, CodegenOptions};
use oxc_ast::ast::Program;
use oxc_parser::Parser;
use oxc_allocator::Allocator;
use oxc_span::SourceType;

let allocator = Allocator::default();
let source = "const a = 1 + 2;";
let parsed = Parser::new(&allocator, source, SourceType::mjs()).parse();
assert!(parsed.errors.is_empty());

let js = Codegen::new().build(&parsed.program);
assert_eq!(js.code, "const a = 1 + 2;\n");

Implementations

impl<'a> Codegen<'a>

pub fn new() -> Codegen<'a>

Create a new code generator.

This is equivalent to Codegen::default.

pub fn with_options(self, options: CodegenOptions) -> Codegen<'a>

Pass options to the code generator.

pub fn with_source_text(self, source_text: &'a str) -> Codegen<'a>

Sets the source text for the code generator.

pub fn with_scoping(self, scoping: Option<Scoping>) -> Codegen<'a>

Set the symbol table used for identifier renaming.

Can be used for easy renaming of variables (based on semantic analysis).

pub fn build(self, program: &Program<'a>) -> CodegenReturn

Print a Program into a string of source code.

A source map will be generated if CodegenOptions::source_map_path is set.

pub fn into_source_text(self) -> String

Turn what’s been built so far into a string. Like build, this fininishes a print and returns the generated source code. Unlike build, no source map is generated.

This is more useful for cases that progressively build code using print_expression.

pub fn print_ascii_byte(&mut self, byte: u8)

Push a single ASCII byte into the buffer.

Panics

Panics if byte is not an ASCII byte (0 - 0x7F).

pub fn print_str(&mut self, s: &str)

Push str into the buffer

pub fn print_str_escaping_script_close_tag(&mut self, s: &str)

Push str into the buffer, escaping </script to <\/script.

pub fn print_expression(&mut self, expr: &Expression<'_>)

Print a single Expression, adding it to the code generator’s internal buffer. Unlike Codegen::build, this does not consume self.

Trait Implementations

impl Default for Codegen<'_>

fn default() -> Codegen<'_>

Returns the “default value” for a type.