mirror of
https://github.com/denoland/deno.git
synced 2024-11-13 16:26:08 -05:00
587 lines
17 KiB
Rust
587 lines
17 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
|
|
//! This module encodes TypeScript errors (diagnostics) into Rust structs and
|
|
//! contains code for printing them to the console.
|
|
|
|
// TODO(ry) This module does a lot of JSON parsing manually. It should use
|
|
// serde_json.
|
|
|
|
use crate::colors;
|
|
use crate::fmt_errors::format_maybe_source_line;
|
|
use crate::fmt_errors::format_maybe_source_name;
|
|
use crate::fmt_errors::DisplayFormatter;
|
|
use serde_json;
|
|
use serde_json::value::Value;
|
|
use std::error::Error;
|
|
use std::fmt;
|
|
|
|
#[derive(Debug, PartialEq, Clone)]
|
|
pub struct Diagnostic {
|
|
pub items: Vec<DiagnosticItem>,
|
|
}
|
|
|
|
impl Diagnostic {
|
|
/// Take a JSON value and attempt to map it to a
|
|
pub fn from_json_value(v: &serde_json::Value) -> Option<Self> {
|
|
if !v.is_object() {
|
|
return None;
|
|
}
|
|
let obj = v.as_object().unwrap();
|
|
|
|
let mut items = Vec::<DiagnosticItem>::new();
|
|
let items_v = &obj["items"];
|
|
if items_v.is_array() {
|
|
let items_values = items_v.as_array().unwrap();
|
|
|
|
for item_v in items_values {
|
|
items.push(DiagnosticItem::from_json_value(item_v)?);
|
|
}
|
|
}
|
|
|
|
Some(Self { items })
|
|
}
|
|
|
|
pub fn from_emit_result(json_str: &str) -> Option<Self> {
|
|
let v = serde_json::from_str::<serde_json::Value>(json_str)
|
|
.expect("Error decoding JSON string.");
|
|
let diagnostics_o = v.get("diagnostics");
|
|
if let Some(diagnostics_v) = diagnostics_o {
|
|
return Self::from_json_value(diagnostics_v);
|
|
}
|
|
|
|
None
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for Diagnostic {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
let mut i = 0;
|
|
for item in &self.items {
|
|
if i > 0 {
|
|
writeln!(f)?;
|
|
}
|
|
write!(f, "{}", item.to_string())?;
|
|
i += 1;
|
|
}
|
|
|
|
if i > 1 {
|
|
write!(f, "\n\nFound {} errors.\n", i)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl Error for Diagnostic {
|
|
fn description(&self) -> &str {
|
|
&self.items[0].message
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Clone)]
|
|
pub struct DiagnosticItem {
|
|
/// The top level message relating to the diagnostic item.
|
|
pub message: String,
|
|
|
|
/// A chain of messages, code, and categories of messages which indicate the
|
|
/// full diagnostic information.
|
|
pub message_chain: Option<DiagnosticMessageChain>,
|
|
|
|
/// Other diagnostic items that are related to the diagnostic, usually these
|
|
/// are suggestions of why an error occurred.
|
|
pub related_information: Option<Vec<DiagnosticItem>>,
|
|
|
|
/// The source line the diagnostic is in reference to.
|
|
pub source_line: Option<String>,
|
|
|
|
/// Zero-based index to the line number of the error.
|
|
pub line_number: Option<i64>,
|
|
|
|
/// The resource name provided to the TypeScript compiler.
|
|
pub script_resource_name: Option<String>,
|
|
|
|
/// Zero-based index to the start position in the entire script resource.
|
|
pub start_position: Option<i64>,
|
|
|
|
/// Zero-based index to the end position in the entire script resource.
|
|
pub end_position: Option<i64>,
|
|
pub category: DiagnosticCategory,
|
|
|
|
/// This is defined in TypeScript and can be referenced via
|
|
/// [diagnosticMessages.json](https://github.com/microsoft/TypeScript/blob/master/src/compiler/diagnosticMessages.json).
|
|
pub code: i64,
|
|
|
|
/// Zero-based index to the start column on `line_number`.
|
|
pub start_column: Option<i64>,
|
|
|
|
/// Zero-based index to the end column on `line_number`.
|
|
pub end_column: Option<i64>,
|
|
}
|
|
|
|
impl DiagnosticItem {
|
|
pub fn from_json_value(v: &serde_json::Value) -> Option<Self> {
|
|
let obj = v.as_object().unwrap();
|
|
|
|
// required attributes
|
|
let message = obj
|
|
.get("message")
|
|
.and_then(|v| v.as_str().map(String::from))?;
|
|
let category = DiagnosticCategory::from(
|
|
obj.get("category").and_then(Value::as_i64).unwrap(),
|
|
);
|
|
let code = obj.get("code").and_then(Value::as_i64).unwrap();
|
|
|
|
// optional attributes
|
|
let source_line = obj
|
|
.get("sourceLine")
|
|
.and_then(|v| v.as_str().map(String::from));
|
|
let script_resource_name = obj
|
|
.get("scriptResourceName")
|
|
.and_then(|v| v.as_str().map(String::from));
|
|
let line_number = obj.get("lineNumber").and_then(Value::as_i64);
|
|
let start_position = obj.get("startPosition").and_then(Value::as_i64);
|
|
let end_position = obj.get("endPosition").and_then(Value::as_i64);
|
|
let start_column = obj.get("startColumn").and_then(Value::as_i64);
|
|
let end_column = obj.get("endColumn").and_then(Value::as_i64);
|
|
|
|
let message_chain_v = obj.get("messageChain");
|
|
let message_chain = match message_chain_v {
|
|
Some(v) => DiagnosticMessageChain::from_json_value(v),
|
|
_ => None,
|
|
};
|
|
|
|
let related_information_v = obj.get("relatedInformation");
|
|
let related_information = match related_information_v {
|
|
Some(r) => {
|
|
let mut related_information = Vec::<DiagnosticItem>::new();
|
|
let related_info_values = r.as_array().unwrap();
|
|
|
|
for related_info_v in related_info_values {
|
|
related_information
|
|
.push(DiagnosticItem::from_json_value(related_info_v)?);
|
|
}
|
|
|
|
Some(related_information)
|
|
}
|
|
_ => None,
|
|
};
|
|
|
|
Some(Self {
|
|
message,
|
|
message_chain,
|
|
related_information,
|
|
code,
|
|
source_line,
|
|
script_resource_name,
|
|
line_number,
|
|
start_position,
|
|
end_position,
|
|
category,
|
|
start_column,
|
|
end_column,
|
|
})
|
|
}
|
|
}
|
|
|
|
impl DisplayFormatter for DiagnosticItem {
|
|
fn format_category_and_code(&self) -> String {
|
|
let category = match self.category {
|
|
DiagnosticCategory::Error => {
|
|
format!("{}", colors::red_bold("error".to_string()))
|
|
}
|
|
DiagnosticCategory::Warning => "warn".to_string(),
|
|
DiagnosticCategory::Debug => "debug".to_string(),
|
|
DiagnosticCategory::Info => "info".to_string(),
|
|
_ => "".to_string(),
|
|
};
|
|
|
|
let code =
|
|
colors::bold(format!(" TS{}", self.code.to_string())).to_string();
|
|
|
|
format!("{}{}: ", category, code)
|
|
}
|
|
|
|
fn format_message(&self, level: usize) -> String {
|
|
debug!("format_message");
|
|
if self.message_chain.is_none() {
|
|
return format!("{:indent$}{}", "", self.message, indent = level);
|
|
}
|
|
|
|
let mut s = self.message_chain.clone().unwrap().format_message(level);
|
|
s.pop();
|
|
|
|
s
|
|
}
|
|
|
|
fn format_related_info(&self) -> String {
|
|
if self.related_information.is_none() {
|
|
return "".to_string();
|
|
}
|
|
|
|
let mut s = String::new();
|
|
let related_information = self.related_information.clone().unwrap();
|
|
for related_diagnostic in related_information {
|
|
let rd = &related_diagnostic;
|
|
s.push_str(&format!(
|
|
"\n{}\n\n ► {}{}\n",
|
|
rd.format_message(2),
|
|
rd.format_source_name(),
|
|
rd.format_source_line(4),
|
|
));
|
|
}
|
|
|
|
s
|
|
}
|
|
|
|
fn format_source_line(&self, level: usize) -> String {
|
|
format_maybe_source_line(
|
|
self.source_line.clone(),
|
|
self.line_number,
|
|
self.start_column,
|
|
self.end_column,
|
|
match self.category {
|
|
DiagnosticCategory::Error => true,
|
|
_ => false,
|
|
},
|
|
level,
|
|
)
|
|
}
|
|
|
|
fn format_source_name(&self) -> String {
|
|
format_maybe_source_name(
|
|
self.script_resource_name.clone(),
|
|
self.line_number,
|
|
self.start_column,
|
|
)
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for DiagnosticItem {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
write!(
|
|
f,
|
|
"{}{}\n\n► {}{}{}",
|
|
self.format_category_and_code(),
|
|
self.format_message(0),
|
|
self.format_source_name(),
|
|
self.format_source_line(0),
|
|
self.format_related_info(),
|
|
)
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Clone)]
|
|
pub struct DiagnosticMessageChain {
|
|
pub message: String,
|
|
pub code: i64,
|
|
pub category: DiagnosticCategory,
|
|
pub next: Option<Vec<DiagnosticMessageChain>>,
|
|
}
|
|
|
|
impl DiagnosticMessageChain {
|
|
fn from_value(v: &serde_json::Value) -> Self {
|
|
let obj = v.as_object().unwrap();
|
|
let message = obj
|
|
.get("message")
|
|
.and_then(|v| v.as_str().map(String::from))
|
|
.unwrap();
|
|
let code = obj.get("code").and_then(Value::as_i64).unwrap();
|
|
let category = DiagnosticCategory::from(
|
|
obj.get("category").and_then(Value::as_i64).unwrap(),
|
|
);
|
|
|
|
let next_v = obj.get("next");
|
|
let next = match next_v {
|
|
Some(n) => DiagnosticMessageChain::from_next_array(n),
|
|
_ => None,
|
|
};
|
|
|
|
Self {
|
|
message,
|
|
code,
|
|
category,
|
|
next,
|
|
}
|
|
}
|
|
|
|
fn from_next_array(v: &serde_json::Value) -> Option<Vec<Self>> {
|
|
if !v.is_array() {
|
|
return None;
|
|
}
|
|
|
|
let vec = v
|
|
.as_array()
|
|
.unwrap()
|
|
.iter()
|
|
.map(|item| Self::from_value(&item))
|
|
.collect::<Vec<Self>>();
|
|
|
|
Some(vec)
|
|
}
|
|
|
|
pub fn from_json_value(v: &serde_json::Value) -> Option<Self> {
|
|
if !v.is_object() {
|
|
return None;
|
|
}
|
|
|
|
Some(Self::from_value(v))
|
|
}
|
|
|
|
pub fn format_message(&self, level: usize) -> String {
|
|
let mut s = String::new();
|
|
|
|
s.push_str(&std::iter::repeat(" ").take(level * 2).collect::<String>());
|
|
s.push_str(&self.message);
|
|
s.push('\n');
|
|
if self.next.is_some() {
|
|
let arr = self.next.clone().unwrap();
|
|
for dm in arr {
|
|
s.push_str(&dm.format_message(level + 1));
|
|
}
|
|
}
|
|
|
|
s
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Clone)]
|
|
pub enum DiagnosticCategory {
|
|
Log, // 0
|
|
Debug, // 1
|
|
Info, // 2
|
|
Error, // 3
|
|
Warning, // 4
|
|
Suggestion, // 5
|
|
}
|
|
|
|
impl From<i64> for DiagnosticCategory {
|
|
fn from(value: i64) -> Self {
|
|
match value {
|
|
0 => DiagnosticCategory::Log,
|
|
1 => DiagnosticCategory::Debug,
|
|
2 => DiagnosticCategory::Info,
|
|
3 => DiagnosticCategory::Error,
|
|
4 => DiagnosticCategory::Warning,
|
|
5 => DiagnosticCategory::Suggestion,
|
|
_ => panic!("Unknown value: {}", value),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use crate::colors::strip_ansi_codes;
|
|
|
|
fn diagnostic1() -> Diagnostic {
|
|
Diagnostic {
|
|
items: vec![
|
|
DiagnosticItem {
|
|
message: "Type '(o: T) => { v: any; f: (x: B) => string; }[]' is not assignable to type '(r: B) => Value<B>[]'.".to_string(),
|
|
message_chain: Some(DiagnosticMessageChain {
|
|
message: "Type '(o: T) => { v: any; f: (x: B) => string; }[]' is not assignable to type '(r: B) => Value<B>[]'.".to_string(),
|
|
code: 2322,
|
|
category: DiagnosticCategory::Error,
|
|
next: Some(vec![DiagnosticMessageChain {
|
|
message: "Types of parameters 'o' and 'r' are incompatible.".to_string(),
|
|
code: 2328,
|
|
category: DiagnosticCategory::Error,
|
|
next: Some(vec![DiagnosticMessageChain {
|
|
message: "Type 'B' is not assignable to type 'T'.".to_string(),
|
|
code: 2322,
|
|
category: DiagnosticCategory::Error,
|
|
next: None,
|
|
}]),
|
|
}]),
|
|
}),
|
|
code: 2322,
|
|
category: DiagnosticCategory::Error,
|
|
start_position: Some(267),
|
|
end_position: Some(273),
|
|
source_line: Some(" values: o => [".to_string()),
|
|
line_number: Some(18),
|
|
script_resource_name: Some("deno/tests/complex_diagnostics.ts".to_string()),
|
|
start_column: Some(2),
|
|
end_column: Some(8),
|
|
related_information: Some(vec![
|
|
DiagnosticItem {
|
|
message: "The expected type comes from property 'values' which is declared here on type 'SettingsInterface<B>'".to_string(),
|
|
message_chain: None,
|
|
related_information: None,
|
|
code: 6500,
|
|
source_line: Some(" values?: (r: T) => Array<Value<T>>;".to_string()),
|
|
script_resource_name: Some("deno/tests/complex_diagnostics.ts".to_string()),
|
|
line_number: Some(6),
|
|
start_position: Some(94),
|
|
end_position: Some(100),
|
|
category: DiagnosticCategory::Info,
|
|
start_column: Some(2),
|
|
end_column: Some(8),
|
|
}
|
|
])
|
|
}
|
|
]
|
|
}
|
|
}
|
|
|
|
fn diagnostic2() -> Diagnostic {
|
|
Diagnostic {
|
|
items: vec![
|
|
DiagnosticItem {
|
|
message: "Example 1".to_string(),
|
|
message_chain: None,
|
|
code: 2322,
|
|
category: DiagnosticCategory::Error,
|
|
start_position: Some(267),
|
|
end_position: Some(273),
|
|
source_line: Some(" values: o => [".to_string()),
|
|
line_number: Some(18),
|
|
script_resource_name: Some(
|
|
"deno/tests/complex_diagnostics.ts".to_string(),
|
|
),
|
|
start_column: Some(2),
|
|
end_column: Some(8),
|
|
related_information: None,
|
|
},
|
|
DiagnosticItem {
|
|
message: "Example 2".to_string(),
|
|
message_chain: None,
|
|
code: 2000,
|
|
category: DiagnosticCategory::Error,
|
|
start_position: Some(2),
|
|
end_position: Some(2),
|
|
source_line: Some(" values: undefined,".to_string()),
|
|
line_number: Some(128),
|
|
script_resource_name: Some("/foo/bar.ts".to_string()),
|
|
start_column: Some(2),
|
|
end_column: Some(8),
|
|
related_information: None,
|
|
},
|
|
],
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn from_json() {
|
|
let v = serde_json::from_str::<serde_json::Value>(
|
|
&r#"{
|
|
"items": [
|
|
{
|
|
"message": "Type '{ a(): { b: number; }; }' is not assignable to type '{ a(): { b: string; }; }'.",
|
|
"messageChain": {
|
|
"message": "Type '{ a(): { b: number; }; }' is not assignable to type '{ a(): { b: string; }; }'.",
|
|
"code": 2322,
|
|
"category": 3,
|
|
"next": [
|
|
{
|
|
"message": "Types of property 'a' are incompatible.",
|
|
"code": 2326,
|
|
"category": 3
|
|
}
|
|
]
|
|
},
|
|
"code": 2322,
|
|
"category": 3,
|
|
"startPosition": 352,
|
|
"endPosition": 353,
|
|
"sourceLine": "x = y;",
|
|
"lineNumber": 29,
|
|
"scriptResourceName": "/deno/tests/error_003_typescript.ts",
|
|
"startColumn": 0,
|
|
"endColumn": 1
|
|
}
|
|
]
|
|
}"#,
|
|
).unwrap();
|
|
let r = Diagnostic::from_json_value(&v);
|
|
let expected = Some(
|
|
Diagnostic {
|
|
items: vec![
|
|
DiagnosticItem {
|
|
message: "Type \'{ a(): { b: number; }; }\' is not assignable to type \'{ a(): { b: string; }; }\'.".to_string(),
|
|
message_chain: Some(
|
|
DiagnosticMessageChain {
|
|
message: "Type \'{ a(): { b: number; }; }\' is not assignable to type \'{ a(): { b: string; }; }\'.".to_string(),
|
|
code: 2322,
|
|
category: DiagnosticCategory::Error,
|
|
next: Some(vec![
|
|
DiagnosticMessageChain {
|
|
message: "Types of property \'a\' are incompatible.".to_string(),
|
|
code: 2326,
|
|
category: DiagnosticCategory::Error,
|
|
next: None,
|
|
}
|
|
])
|
|
}
|
|
),
|
|
related_information: None,
|
|
source_line: Some("x = y;".to_string()),
|
|
line_number: Some(29),
|
|
script_resource_name: Some("/deno/tests/error_003_typescript.ts".to_string()),
|
|
start_position: Some(352),
|
|
end_position: Some(353),
|
|
category: DiagnosticCategory::Error,
|
|
code: 2322,
|
|
start_column: Some(0),
|
|
end_column: Some(1)
|
|
}
|
|
]
|
|
}
|
|
);
|
|
assert_eq!(expected, r);
|
|
}
|
|
|
|
#[test]
|
|
fn from_emit_result() {
|
|
let r = Diagnostic::from_emit_result(
|
|
&r#"{
|
|
"emitSkipped": false,
|
|
"diagnostics": {
|
|
"items": [
|
|
{
|
|
"message": "foo bar",
|
|
"code": 9999,
|
|
"category": 3
|
|
}
|
|
]
|
|
}
|
|
}"#,
|
|
);
|
|
let expected = Some(Diagnostic {
|
|
items: vec![DiagnosticItem {
|
|
message: "foo bar".to_string(),
|
|
message_chain: None,
|
|
related_information: None,
|
|
source_line: None,
|
|
line_number: None,
|
|
script_resource_name: None,
|
|
start_position: None,
|
|
end_position: None,
|
|
category: DiagnosticCategory::Error,
|
|
code: 9999,
|
|
start_column: None,
|
|
end_column: None,
|
|
}],
|
|
});
|
|
assert_eq!(expected, r);
|
|
}
|
|
|
|
#[test]
|
|
fn from_emit_result_none() {
|
|
let r = &r#"{"emitSkipped":false}"#;
|
|
assert!(Diagnostic::from_emit_result(r).is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn diagnostic_to_string1() {
|
|
let d = diagnostic1();
|
|
let expected = "error TS2322: Type \'(o: T) => { v: any; f: (x: B) => string; }[]\' is not assignable to type \'(r: B) => Value<B>[]\'.\n Types of parameters \'o\' and \'r\' are incompatible.\n Type \'B\' is not assignable to type \'T\'.\n\n► deno/tests/complex_diagnostics.ts:19:3\n\n19 values: o => [\n ~~~~~~\n\n The expected type comes from property \'values\' which is declared here on type \'SettingsInterface<B>\'\n\n ► deno/tests/complex_diagnostics.ts:7:3\n\n 7 values?: (r: T) => Array<Value<T>>;\n ~~~~~~\n\n";
|
|
assert_eq!(expected, strip_ansi_codes(&d.to_string()));
|
|
}
|
|
|
|
#[test]
|
|
fn diagnostic_to_string2() {
|
|
let d = diagnostic2();
|
|
let expected = "error TS2322: Example 1\n\n► deno/tests/complex_diagnostics.ts:19:3\n\n19 values: o => [\n ~~~~~~\n\nerror TS2000: Example 2\n\n► /foo/bar.ts:129:3\n\n129 values: undefined,\n ~~~~~~\n\n\nFound 2 errors.\n";
|
|
assert_eq!(expected, strip_ansi_codes(&d.to_string()));
|
|
}
|
|
}
|