slicec/parsers/preprocessor/
parser.rs

1// Copyright (c) ZeroC, Inc.
2
3use super::super::common::{ParserResult, SourceBlock};
4use super::construct_error_from;
5use super::grammar::lalrpop;
6use super::lexer::Lexer;
7use crate::diagnostics::Diagnostics;
8use std::collections::HashSet;
9
10/// Helper macro for generating parsing functions.
11macro_rules! implement_parse_function {
12    ($function_name:ident, $underlying_parser:ident, $return_type:ty $(,)?) => {
13        #[allow(clippy::result_unit_err)]
14        pub fn $function_name<'input>(mut self, input: impl Into<Lexer<'input>>) -> ParserResult<$return_type> {
15            match lalrpop::$underlying_parser::new().parse(&mut self, input.into()) {
16                Err(parse_error) => {
17                    let error = construct_error_from(parse_error, self.file_name);
18                    error.push_into(self.diagnostics);
19                    Err(())
20                }
21                Ok(parse_value) => match self.diagnostics.has_errors() {
22                    false => Ok(parse_value),
23                    true => Err(()),
24                },
25            }
26        }
27    };
28}
29
30pub struct Preprocessor<'a> {
31    pub file_name: &'a str,
32    pub(super) defined_symbols: &'a mut HashSet<String>,
33    pub(super) diagnostics: &'a mut Diagnostics,
34}
35
36impl<'a> Preprocessor<'a> {
37    implement_parse_function!(
38        parse_slice_file,
39        SliceFileParser,
40        impl Iterator<Item = SourceBlock<'input>>,
41    );
42
43    pub fn new(file_name: &'a str, defined_symbols: &'a mut HashSet<String>, diagnostics: &'a mut Diagnostics) -> Self {
44        Preprocessor {
45            file_name,
46            defined_symbols,
47            diagnostics,
48        }
49    }
50}
slicec/parsers/preprocessor/parser.rs

slicec/parsers/preprocessor/
parser.rs
