syn_solidity/stmt/
blocks.rs

1use crate::{kw, Spanned, Stmt};
2use proc_macro2::Span;
3use std::fmt;
4use syn::{
5    parse::{Parse, ParseStream},
6    token::Brace,
7    Result,
8};
9
10/// A curly-braced block of statements: `{ ... }`.
11#[derive(Clone)]
12pub struct Block {
13    pub brace_token: Brace,
14    pub stmts: Vec<Stmt>,
15}
16
17impl fmt::Debug for Block {
18    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
19        f.debug_tuple("Block").field(&self.stmts).finish()
20    }
21}
22
23impl Parse for Block {
24    fn parse(input: ParseStream<'_>) -> Result<Self> {
25        let content;
26        Ok(Self {
27            brace_token: syn::braced!(content in input),
28            stmts: {
29                let mut vec = Vec::new();
30                debug!("> Block: {:?}", content.to_string());
31                while !content.is_empty() {
32                    vec.push(content.parse()?);
33                }
34                debug!("< Block: {} stmts\n", vec.len());
35                vec
36            },
37        })
38    }
39}
40
41impl Spanned for Block {
42    fn span(&self) -> Span {
43        self.brace_token.span.join()
44    }
45
46    fn set_span(&mut self, span: Span) {
47        self.brace_token = Brace(span);
48    }
49}
50
51/// An unchecked block: `unchecked { ... }`.
52#[derive(Clone)]
53pub struct UncheckedBlock {
54    pub unchecked_token: kw::unchecked,
55    pub block: Block,
56}
57
58impl fmt::Debug for UncheckedBlock {
59    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
60        f.debug_struct("UncheckedBlock").field("stmts", &self.block.stmts).finish()
61    }
62}
63
64impl Parse for UncheckedBlock {
65    fn parse(input: ParseStream<'_>) -> Result<Self> {
66        Ok(Self { unchecked_token: input.parse()?, block: input.parse()? })
67    }
68}
69
70impl Spanned for UncheckedBlock {
71    fn span(&self) -> Span {
72        let span = self.unchecked_token.span;
73        span.join(self.block.span()).unwrap_or(span)
74    }
75
76    fn set_span(&mut self, span: Span) {
77        self.unchecked_token.span = span;
78        self.block.set_span(span);
79    }
80}
syn_solidity/stmt/blocks.rs

syn_solidity/stmt/
blocks.rs
