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| 1 | +use std::{io, path::PathBuf}; |
| 2 | + |
| 3 | +use annotate_snippets::{Level, Message, Renderer, Snippet}; |
| 4 | +use anyhow::Result; |
| 5 | +use squawk_syntax::syntax_error::SyntaxError; |
| 6 | + |
| 7 | +use crate::{ |
| 8 | + file::{sql_from_path, sql_from_stdin}, |
| 9 | + DebugOption, |
| 10 | +}; |
| 11 | + |
| 12 | +pub(crate) fn debug<W: io::Write>( |
| 13 | + f: &mut W, |
| 14 | + paths: &[PathBuf], |
| 15 | + read_stdin: bool, |
| 16 | + dump_ast: &DebugOption, |
| 17 | + verbose: bool, |
| 18 | +) -> Result<()> { |
| 19 | + let process_dump_ast = |sql: &str, filename: &str, f: &mut W| -> Result<()> { |
| 20 | + match dump_ast { |
| 21 | + DebugOption::Lex => { |
| 22 | + let tokens = squawk_lexer::tokenize(sql); |
| 23 | + let mut start = 0; |
| 24 | + for token in tokens { |
| 25 | + if verbose { |
| 26 | + let content = &sql[start as usize..(start + token.len) as usize]; |
| 27 | + start += token.len; |
| 28 | + writeln!(f, "{:?} @ {:?}", content, token.kind)?; |
| 29 | + } else { |
| 30 | + writeln!(f, "{:?}", token)?; |
| 31 | + } |
| 32 | + } |
| 33 | + } |
| 34 | + DebugOption::Parse => { |
| 35 | + let parse = squawk_syntax::SourceFile::parse(sql); |
| 36 | + if verbose { |
| 37 | + writeln!(f, "{}\n---", parse.syntax_node())?; |
| 38 | + } |
| 39 | + writeln!(f, "{:#?}", parse.syntax_node())?; |
| 40 | + let errors = parse.errors(); |
| 41 | + if !errors.is_empty() { |
| 42 | + let mut snap = "---".to_string(); |
| 43 | + for syntax_error in &errors { |
| 44 | + let range = syntax_error.range(); |
| 45 | + let text = syntax_error.message(); |
| 46 | + // split into there own lines so that we can just grep |
| 47 | + // for error without hitting this part |
| 48 | + snap += "\n"; |
| 49 | + snap += "ERROR"; |
| 50 | + if range.start() == range.end() { |
| 51 | + snap += &format!("@{:?} {:?}", range.start(), text); |
| 52 | + } else { |
| 53 | + snap += &format!("@{:?}:{:?} {:?}", range.start(), range.end(), text); |
| 54 | + } |
| 55 | + } |
| 56 | + writeln!(f, "{}", snap)?; |
| 57 | + let renderer = Renderer::styled(); |
| 58 | + render_syntax_errors(&errors, filename, sql, |message| { |
| 59 | + writeln!(f, "{}", renderer.render(message))?; |
| 60 | + Ok(()) |
| 61 | + })?; |
| 62 | + } |
| 63 | + } |
| 64 | + } |
| 65 | + Ok(()) |
| 66 | + }; |
| 67 | + if read_stdin { |
| 68 | + let sql = sql_from_stdin()?; |
| 69 | + process_dump_ast(&sql, "stdin", f)?; |
| 70 | + return Ok(()); |
| 71 | + } |
| 72 | + |
| 73 | + for path in paths { |
| 74 | + let sql = sql_from_path(path)?; |
| 75 | + process_dump_ast(&sql, &path.to_string_lossy(), f)?; |
| 76 | + } |
| 77 | + Ok(()) |
| 78 | +} |
| 79 | + |
| 80 | +fn render_syntax_errors( |
| 81 | + errors: &[SyntaxError], |
| 82 | + filename: &str, |
| 83 | + sql: &str, |
| 84 | + mut render: impl FnMut(Message<'_>) -> Result<()>, |
| 85 | +) -> Result<()> { |
| 86 | + for err in errors { |
| 87 | + let text = err.message(); |
| 88 | + let span = err.range().into(); |
| 89 | + let message = Level::Warning.title(text).id("syntax-error").snippet( |
| 90 | + Snippet::source(sql) |
| 91 | + .origin(filename) |
| 92 | + .fold(true) |
| 93 | + .annotation(Level::Error.span(span)), |
| 94 | + ); |
| 95 | + render(message)?; |
| 96 | + } |
| 97 | + Ok(()) |
| 98 | +} |
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