Struct rust_codegen::Block

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pub struct Block { /* private fields */ }

Expand description

Defines a code block. This is used to define a function body.

Implementations

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impl Block

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pub fn new(before: &str) -> Self

Returns an empty code block.

Arguments

before - The contents to add before the block. This can be an empty “” if you don’t want anything before the block.

Examples

use rust_codegen::Block;
 
let mut block = Block::new("");

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pub fn line<T>(&mut self, line: T) -> &mut Self where
T: ToString,

Push a line to the code block.

Arguments

line - The line to add to the code block.

Examples

use rust_codegen::Block;
 
let mut block = Block::new("");
block.line("println!(\"Hello, world!\");");

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pub fn push_block(&mut self, block: Block) -> &mut Self

Push a nested block to this block.

Arguments

block - The block to push to this block.

Examples

use rust_codegen::Block;
 
let mut block_1 = Block::new("");
block_1.line("println!(\"Hello, world!\");");
 
let mut block_2 = Block::new("");
block_2.line("println!(\"from Rust!!\");");
 
block_1.push_block(block_2);

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pub fn after(&mut self, after: &str) -> &mut Self

Add a snippet after the block.

Arguments

after - The snippet to add after the code block.

Examples

use rust_codegen::Block;
 
let mut block = Block::new("This is before");
block.after("This is after");

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

Formats the block using the given formatter.

Arguments

fmt - The formatter to use.

Examples

use rust_codegen::{Block, Formatter};
 
let mut dest = String::new();
let mut fmt = Formatter::new(&mut dest);
 
let mut block = Block::new("This is before");
block.fmt(&mut fmt);