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// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
// at http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#[derive(Serialize, Deserialize, Debug)]
pub struct Diagnostic {
    /// The primary error message.
    pub message: String,
    pub code: Option<DiagnosticCode>,
    /// "error: internal compiler error", "error", "warning", "note", "help".
    pub level: String,
    pub spans: Vec<DiagnosticSpan>,
    /// Associated diagnostic messages.
    pub children: Vec<Diagnostic>,
    /// The message as rustc would render it.
    pub rendered: Option<String>,
}

#[derive(Serialize, Deserialize, Debug)]
pub struct DiagnosticSpan {
    pub file_name: String,
    pub byte_start: u32,
    pub byte_end: u32,
    /// 1-based.
    pub line_start: usize,
    pub line_end: usize,
    /// 1-based, character offset.
    pub column_start: usize,
    pub column_end: usize,
    /// Is this a "primary" span -- meaning the point, or one of the points,
    /// where the error occurred?
    pub is_primary: bool,
    /// Source text from the start of line_start to the end of line_end.
    pub text: Vec<DiagnosticSpanLine>,
    /// Label that should be placed at this location (if any)
    pub label: Option<String>,
    /// If we are suggesting a replacement, this will contain text
    /// that should be sliced in atop this span.
    pub suggested_replacement: Option<String>,
    /// Macro invocations that created the code at this span, if any.
    pub expansion: Option<Box<DiagnosticSpanMacroExpansion>>,
}

#[derive(Serialize, Deserialize, Debug)]
pub struct DiagnosticSpanLine {
    pub text: String,

    /// 1-based, character offset in self.text.
    pub highlight_start: usize,

    pub highlight_end: usize,
}

#[derive(Serialize, Deserialize, Debug)]
pub struct DiagnosticSpanMacroExpansion {
    /// span where macro was applied to generate this code; note that
    /// this may itself derive from a macro (if
    /// `span.expansion.is_some()`)
    pub span: DiagnosticSpan,

    /// name of macro that was applied (e.g., "foo!" or "#[derive(Eq)]")
    pub macro_decl_name: String,

    /// span where macro was defined (if known)
    pub def_site_span: Option<DiagnosticSpan>,
}

#[derive(Serialize, Deserialize, Debug)]
pub struct DiagnosticCode {
    /// The code itself.
    pub code: String,
    /// An explanation for the code.
    pub explanation: Option<String>,
}