41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
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use crate::{
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ast::{self, AstNode},
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File,
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string_lexing,
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yellow::{
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SyntaxError,
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},
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};
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pub(crate) fn validate(file: &File) -> Vec<SyntaxError> {
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let mut errors = Vec::new();
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for d in file.root.borrowed().descendants() {
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if let Some(c) = ast::Char::cast(d) {
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let components = &mut string_lexing::parse_char_literal(c.text());
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let len = components.count();
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if !components.has_closing_quote {
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errors.push(SyntaxError {
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msg: "Unclosed char literal".to_string(),
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offset: d.range().start(),
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});
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}
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if len == 0 {
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errors.push(SyntaxError {
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msg: "Empty char literal".to_string(),
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offset: d.range().start(),
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});
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}
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if len > 1 {
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errors.push(SyntaxError {
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msg: "Character literal should be only one character long".to_string(),
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offset: d.range().start(),
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});
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}
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}
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}
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errors
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}
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