mirror of
https://github.com/denoland/deno
synced 2024-10-13 19:42:29 +00:00
669 lines
17 KiB
Rust
669 lines
17 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
|
|
use crate::doc::Location;
|
|
use crate::msg::MediaType;
|
|
use crate::swc_common;
|
|
use crate::swc_common::comments::CommentKind;
|
|
use crate::swc_common::comments::Comments;
|
|
use crate::swc_common::errors::Diagnostic;
|
|
use crate::swc_common::errors::DiagnosticBuilder;
|
|
use crate::swc_common::errors::Emitter;
|
|
use crate::swc_common::errors::Handler;
|
|
use crate::swc_common::errors::HandlerFlags;
|
|
use crate::swc_common::FileName;
|
|
use crate::swc_common::Globals;
|
|
use crate::swc_common::SourceMap;
|
|
use crate::swc_common::Span;
|
|
use crate::swc_ecma_ast;
|
|
use crate::swc_ecma_parser::lexer::Lexer;
|
|
use crate::swc_ecma_parser::EsConfig;
|
|
use crate::swc_ecma_parser::JscTarget;
|
|
use crate::swc_ecma_parser::Parser;
|
|
use crate::swc_ecma_parser::Session;
|
|
use crate::swc_ecma_parser::SourceFileInput;
|
|
use crate::swc_ecma_parser::Syntax;
|
|
use crate::swc_ecma_parser::TsConfig;
|
|
use std::error::Error;
|
|
use std::fmt;
|
|
use std::sync::Arc;
|
|
use std::sync::RwLock;
|
|
use swc_ecma_visit::Node;
|
|
use swc_ecma_visit::Visit;
|
|
|
|
fn get_default_es_config() -> EsConfig {
|
|
let mut config = EsConfig::default();
|
|
config.num_sep = true;
|
|
config.class_private_props = true;
|
|
config.class_private_methods = true;
|
|
config.class_props = true;
|
|
config.export_default_from = true;
|
|
config.export_namespace_from = true;
|
|
config.dynamic_import = true;
|
|
config.nullish_coalescing = true;
|
|
config.optional_chaining = true;
|
|
config.import_meta = true;
|
|
config.top_level_await = true;
|
|
config
|
|
}
|
|
|
|
fn get_default_ts_config() -> TsConfig {
|
|
let mut ts_config = TsConfig::default();
|
|
ts_config.dynamic_import = true;
|
|
ts_config.decorators = true;
|
|
ts_config
|
|
}
|
|
|
|
pub fn get_syntax_for_media_type(media_type: MediaType) -> Syntax {
|
|
match media_type {
|
|
MediaType::JavaScript => Syntax::Es(get_default_es_config()),
|
|
MediaType::JSX => {
|
|
let mut config = get_default_es_config();
|
|
config.jsx = true;
|
|
Syntax::Es(config)
|
|
}
|
|
MediaType::TypeScript => Syntax::Typescript(get_default_ts_config()),
|
|
MediaType::TSX => {
|
|
let mut config = get_default_ts_config();
|
|
config.tsx = true;
|
|
Syntax::Typescript(config)
|
|
}
|
|
_ => Syntax::Es(get_default_es_config()),
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Debug)]
|
|
pub struct SwcDiagnosticBuffer {
|
|
pub diagnostics: Vec<String>,
|
|
}
|
|
|
|
impl Error for SwcDiagnosticBuffer {}
|
|
|
|
impl fmt::Display for SwcDiagnosticBuffer {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
let msg = self.diagnostics.join(",");
|
|
|
|
f.pad(&msg)
|
|
}
|
|
}
|
|
|
|
impl SwcDiagnosticBuffer {
|
|
pub fn from_swc_error(
|
|
error_buffer: SwcErrorBuffer,
|
|
parser: &AstParser,
|
|
) -> Self {
|
|
let s = error_buffer.0.read().unwrap().clone();
|
|
|
|
let diagnostics = s
|
|
.iter()
|
|
.map(|d| {
|
|
let mut msg = d.message();
|
|
|
|
if let Some(span) = d.span.primary_span() {
|
|
let location = parser.get_span_location(span);
|
|
let filename = match &location.file.name {
|
|
FileName::Custom(n) => n,
|
|
_ => unreachable!(),
|
|
};
|
|
msg = format!(
|
|
"{} at {}:{}:{}",
|
|
msg, filename, location.line, location.col_display
|
|
);
|
|
}
|
|
|
|
msg
|
|
})
|
|
.collect::<Vec<String>>();
|
|
|
|
Self { diagnostics }
|
|
}
|
|
}
|
|
|
|
#[derive(Clone)]
|
|
pub struct SwcErrorBuffer(Arc<RwLock<Vec<Diagnostic>>>);
|
|
|
|
impl SwcErrorBuffer {
|
|
pub fn default() -> Self {
|
|
Self(Arc::new(RwLock::new(vec![])))
|
|
}
|
|
}
|
|
|
|
impl Emitter for SwcErrorBuffer {
|
|
fn emit(&mut self, db: &DiagnosticBuilder) {
|
|
self.0.write().unwrap().push((**db).clone());
|
|
}
|
|
}
|
|
|
|
/// Low-level utility structure with common AST parsing functions.
|
|
///
|
|
/// Allows to build more complicated parser by providing a callback
|
|
/// to `parse_module`.
|
|
pub struct AstParser {
|
|
pub buffered_error: SwcErrorBuffer,
|
|
pub source_map: Arc<SourceMap>,
|
|
pub handler: Handler,
|
|
pub comments: Comments,
|
|
pub globals: Globals,
|
|
}
|
|
|
|
impl AstParser {
|
|
pub fn new() -> Self {
|
|
let buffered_error = SwcErrorBuffer::default();
|
|
|
|
let handler = Handler::with_emitter_and_flags(
|
|
Box::new(buffered_error.clone()),
|
|
HandlerFlags {
|
|
dont_buffer_diagnostics: true,
|
|
can_emit_warnings: true,
|
|
..Default::default()
|
|
},
|
|
);
|
|
|
|
AstParser {
|
|
buffered_error,
|
|
source_map: Arc::new(SourceMap::default()),
|
|
handler,
|
|
comments: Comments::default(),
|
|
globals: Globals::new(),
|
|
}
|
|
}
|
|
|
|
pub fn parse_module<F, R>(
|
|
&self,
|
|
file_name: &str,
|
|
media_type: MediaType,
|
|
source_code: &str,
|
|
callback: F,
|
|
) -> R
|
|
where
|
|
F: FnOnce(Result<swc_ecma_ast::Module, SwcDiagnosticBuffer>) -> R,
|
|
{
|
|
swc_common::GLOBALS.set(&self.globals, || {
|
|
let swc_source_file = self.source_map.new_source_file(
|
|
FileName::Custom(file_name.to_string()),
|
|
source_code.to_string(),
|
|
);
|
|
|
|
let buffered_err = self.buffered_error.clone();
|
|
let session = Session {
|
|
handler: &self.handler,
|
|
};
|
|
|
|
let syntax = get_syntax_for_media_type(media_type);
|
|
|
|
let lexer = Lexer::new(
|
|
session,
|
|
syntax,
|
|
JscTarget::Es2019,
|
|
SourceFileInput::from(&*swc_source_file),
|
|
Some(&self.comments),
|
|
);
|
|
|
|
let mut parser = Parser::new_from(session, lexer);
|
|
|
|
let parse_result =
|
|
parser
|
|
.parse_module()
|
|
.map_err(move |mut err: DiagnosticBuilder| {
|
|
err.emit();
|
|
SwcDiagnosticBuffer::from_swc_error(buffered_err, self)
|
|
});
|
|
|
|
callback(parse_result)
|
|
})
|
|
}
|
|
|
|
pub fn get_span_location(&self, span: Span) -> swc_common::Loc {
|
|
self.source_map.lookup_char_pos(span.lo())
|
|
}
|
|
|
|
pub fn get_span_comments(
|
|
&self,
|
|
span: Span,
|
|
) -> Vec<swc_common::comments::Comment> {
|
|
let maybe_comments = self.comments.take_leading_comments(span.lo());
|
|
|
|
if let Some(comments) = maybe_comments {
|
|
// clone the comments and put them back in map
|
|
let to_return = comments.clone();
|
|
self.comments.add_leading(span.lo(), comments);
|
|
to_return
|
|
} else {
|
|
vec![]
|
|
}
|
|
}
|
|
}
|
|
|
|
struct DependencyVisitor {
|
|
dependencies: Vec<String>,
|
|
analyze_dynamic_imports: bool,
|
|
}
|
|
|
|
impl Visit for DependencyVisitor {
|
|
fn visit_import_decl(
|
|
&mut self,
|
|
import_decl: &swc_ecma_ast::ImportDecl,
|
|
_parent: &dyn Node,
|
|
) {
|
|
let src_str = import_decl.src.value.to_string();
|
|
self.dependencies.push(src_str);
|
|
}
|
|
|
|
fn visit_named_export(
|
|
&mut self,
|
|
named_export: &swc_ecma_ast::NamedExport,
|
|
_parent: &dyn Node,
|
|
) {
|
|
if let Some(src) = &named_export.src {
|
|
let src_str = src.value.to_string();
|
|
self.dependencies.push(src_str);
|
|
}
|
|
}
|
|
|
|
fn visit_export_all(
|
|
&mut self,
|
|
export_all: &swc_ecma_ast::ExportAll,
|
|
_parent: &dyn Node,
|
|
) {
|
|
let src_str = export_all.src.value.to_string();
|
|
self.dependencies.push(src_str);
|
|
}
|
|
|
|
fn visit_call_expr(
|
|
&mut self,
|
|
call_expr: &swc_ecma_ast::CallExpr,
|
|
_parent: &dyn Node,
|
|
) {
|
|
if !self.analyze_dynamic_imports {
|
|
return;
|
|
}
|
|
|
|
use swc_ecma_ast::Expr::*;
|
|
use swc_ecma_ast::ExprOrSuper::*;
|
|
|
|
let boxed_expr = match call_expr.callee.clone() {
|
|
Super(_) => return,
|
|
Expr(boxed) => boxed,
|
|
};
|
|
|
|
match &*boxed_expr {
|
|
Ident(ident) => {
|
|
if &ident.sym.to_string() != "import" {
|
|
return;
|
|
}
|
|
}
|
|
_ => return,
|
|
};
|
|
|
|
if let Some(arg) = call_expr.args.get(0) {
|
|
match &*arg.expr {
|
|
Lit(lit) => {
|
|
if let swc_ecma_ast::Lit::Str(str_) = lit {
|
|
let src_str = str_.value.to_string();
|
|
self.dependencies.push(src_str);
|
|
}
|
|
}
|
|
_ => return,
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Debug, PartialEq)]
|
|
enum DependencyKind {
|
|
Import,
|
|
DynamicImport,
|
|
Export,
|
|
}
|
|
|
|
#[derive(Clone, Debug, PartialEq)]
|
|
struct DependencyDescriptor {
|
|
span: Span,
|
|
specifier: String,
|
|
kind: DependencyKind,
|
|
}
|
|
|
|
struct NewDependencyVisitor {
|
|
dependencies: Vec<DependencyDescriptor>,
|
|
}
|
|
|
|
impl Visit for NewDependencyVisitor {
|
|
fn visit_import_decl(
|
|
&mut self,
|
|
import_decl: &swc_ecma_ast::ImportDecl,
|
|
_parent: &dyn Node,
|
|
) {
|
|
let src_str = import_decl.src.value.to_string();
|
|
self.dependencies.push(DependencyDescriptor {
|
|
specifier: src_str,
|
|
kind: DependencyKind::Import,
|
|
span: import_decl.span,
|
|
});
|
|
}
|
|
|
|
fn visit_named_export(
|
|
&mut self,
|
|
named_export: &swc_ecma_ast::NamedExport,
|
|
_parent: &dyn Node,
|
|
) {
|
|
if let Some(src) = &named_export.src {
|
|
let src_str = src.value.to_string();
|
|
self.dependencies.push(DependencyDescriptor {
|
|
specifier: src_str,
|
|
kind: DependencyKind::Export,
|
|
span: named_export.span,
|
|
});
|
|
}
|
|
}
|
|
|
|
fn visit_export_all(
|
|
&mut self,
|
|
export_all: &swc_ecma_ast::ExportAll,
|
|
_parent: &dyn Node,
|
|
) {
|
|
let src_str = export_all.src.value.to_string();
|
|
self.dependencies.push(DependencyDescriptor {
|
|
specifier: src_str,
|
|
kind: DependencyKind::Export,
|
|
span: export_all.span,
|
|
});
|
|
}
|
|
|
|
fn visit_ts_import_type(
|
|
&mut self,
|
|
ts_import_type: &swc_ecma_ast::TsImportType,
|
|
_parent: &dyn Node,
|
|
) {
|
|
// TODO(bartlomieju): possibly add separate DependencyKind
|
|
let src_str = ts_import_type.arg.value.to_string();
|
|
self.dependencies.push(DependencyDescriptor {
|
|
specifier: src_str,
|
|
kind: DependencyKind::Import,
|
|
span: ts_import_type.arg.span,
|
|
});
|
|
}
|
|
|
|
fn visit_call_expr(
|
|
&mut self,
|
|
call_expr: &swc_ecma_ast::CallExpr,
|
|
parent: &dyn Node,
|
|
) {
|
|
use swc_ecma_ast::Expr::*;
|
|
use swc_ecma_ast::ExprOrSuper::*;
|
|
|
|
swc_ecma_visit::visit_call_expr(self, call_expr, parent);
|
|
let boxed_expr = match call_expr.callee.clone() {
|
|
Super(_) => return,
|
|
Expr(boxed) => boxed,
|
|
};
|
|
|
|
match &*boxed_expr {
|
|
Ident(ident) => {
|
|
if &ident.sym.to_string() != "import" {
|
|
return;
|
|
}
|
|
}
|
|
_ => return,
|
|
};
|
|
|
|
if let Some(arg) = call_expr.args.get(0) {
|
|
match &*arg.expr {
|
|
Lit(lit) => {
|
|
if let swc_ecma_ast::Lit::Str(str_) = lit {
|
|
let src_str = str_.value.to_string();
|
|
self.dependencies.push(DependencyDescriptor {
|
|
specifier: src_str,
|
|
kind: DependencyKind::DynamicImport,
|
|
span: call_expr.span,
|
|
});
|
|
}
|
|
}
|
|
_ => return,
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn get_deno_types(parser: &AstParser, span: Span) -> Option<String> {
|
|
let comments = parser.get_span_comments(span);
|
|
|
|
if comments.is_empty() {
|
|
return None;
|
|
}
|
|
|
|
// @deno-types must directly prepend import statement - hence
|
|
// checking last comment for span
|
|
let last = comments.last().unwrap();
|
|
let comment = last.text.trim_start();
|
|
|
|
if comment.starts_with("@deno-types") {
|
|
let split: Vec<String> =
|
|
comment.split('=').map(|s| s.to_string()).collect();
|
|
assert_eq!(split.len(), 2);
|
|
let specifier_in_quotes = split.get(1).unwrap().to_string();
|
|
let specifier = specifier_in_quotes
|
|
.trim_start_matches('\"')
|
|
.trim_start_matches('\'')
|
|
.trim_end_matches('\"')
|
|
.trim_end_matches('\'')
|
|
.to_string();
|
|
return Some(specifier);
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
#[derive(Clone, Debug, PartialEq)]
|
|
pub struct ImportDescriptor {
|
|
pub specifier: String,
|
|
pub deno_types: Option<String>,
|
|
pub location: Location,
|
|
}
|
|
|
|
#[derive(Clone, Debug, PartialEq)]
|
|
pub enum TsReferenceKind {
|
|
Lib,
|
|
Types,
|
|
Path,
|
|
}
|
|
|
|
#[derive(Clone, Debug, PartialEq)]
|
|
pub struct TsReferenceDescriptor {
|
|
pub kind: TsReferenceKind,
|
|
pub specifier: String,
|
|
pub location: Location,
|
|
}
|
|
|
|
pub fn analyze_dependencies_and_references(
|
|
file_name: &str,
|
|
media_type: MediaType,
|
|
source_code: &str,
|
|
analyze_dynamic_imports: bool,
|
|
) -> Result<
|
|
(Vec<ImportDescriptor>, Vec<TsReferenceDescriptor>),
|
|
SwcDiagnosticBuffer,
|
|
> {
|
|
let parser = AstParser::new();
|
|
parser.parse_module(file_name, media_type, source_code, |parse_result| {
|
|
let module = parse_result?;
|
|
let mut collector = NewDependencyVisitor {
|
|
dependencies: vec![],
|
|
};
|
|
let module_span = module.span;
|
|
collector.visit_module(&module, &module);
|
|
|
|
let dependency_descriptors = collector.dependencies;
|
|
|
|
// for each import check if there's relevant @deno-types directive
|
|
let imports = dependency_descriptors
|
|
.iter()
|
|
.filter(|desc| {
|
|
if analyze_dynamic_imports {
|
|
return true;
|
|
}
|
|
|
|
desc.kind != DependencyKind::DynamicImport
|
|
})
|
|
.map(|desc| {
|
|
let location = parser.get_span_location(desc.span);
|
|
let deno_types = get_deno_types(&parser, desc.span);
|
|
ImportDescriptor {
|
|
specifier: desc.specifier.to_string(),
|
|
deno_types,
|
|
location: location.into(),
|
|
}
|
|
})
|
|
.collect();
|
|
|
|
// analyze comment from beginning of the file and find TS directives
|
|
let comments = parser
|
|
.comments
|
|
.take_leading_comments(module_span.lo())
|
|
.unwrap_or_else(Vec::new);
|
|
|
|
let mut references = vec![];
|
|
for comment in comments {
|
|
if comment.kind != CommentKind::Line {
|
|
continue;
|
|
}
|
|
|
|
// TODO(bartlomieju): you can do better than that...
|
|
let text = comment.text.to_string();
|
|
let (kind, specifier_in_quotes) =
|
|
if text.starts_with("/ <reference path=") {
|
|
(
|
|
TsReferenceKind::Path,
|
|
text.trim_start_matches("/ <reference path="),
|
|
)
|
|
} else if text.starts_with("/ <reference lib=") {
|
|
(
|
|
TsReferenceKind::Lib,
|
|
text.trim_start_matches("/ <reference lib="),
|
|
)
|
|
} else if text.starts_with("/ <reference types=") {
|
|
(
|
|
TsReferenceKind::Types,
|
|
text.trim_start_matches("/ <reference types="),
|
|
)
|
|
} else {
|
|
continue;
|
|
};
|
|
let specifier = specifier_in_quotes
|
|
.trim_end_matches("/>")
|
|
.trim_end()
|
|
.trim_start_matches('\"')
|
|
.trim_start_matches('\'')
|
|
.trim_end_matches('\"')
|
|
.trim_end_matches('\'')
|
|
.to_string();
|
|
|
|
let location = parser.get_span_location(comment.span);
|
|
references.push(TsReferenceDescriptor {
|
|
kind,
|
|
specifier,
|
|
location: location.into(),
|
|
});
|
|
}
|
|
Ok((imports, references))
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn test_analyze_dependencies_and_directives() {
|
|
let source = r#"
|
|
// This comment is placed to make sure that directives are parsed
|
|
// even when they start on non-first line
|
|
|
|
/// <reference lib="dom" />
|
|
/// <reference types="./type_reference.d.ts" />
|
|
/// <reference path="./type_reference/dep.ts" />
|
|
// @deno-types="./type_definitions/foo.d.ts"
|
|
import { foo } from "./type_definitions/foo.js";
|
|
// @deno-types="./type_definitions/fizz.d.ts"
|
|
import "./type_definitions/fizz.js";
|
|
|
|
/// <reference path="./type_reference/dep2.ts" />
|
|
|
|
import * as qat from "./type_definitions/qat.ts";
|
|
|
|
console.log(foo);
|
|
console.log(fizz);
|
|
console.log(qat.qat);
|
|
"#;
|
|
|
|
let (imports, references) = analyze_dependencies_and_references(
|
|
"some/file.ts",
|
|
MediaType::TypeScript,
|
|
source,
|
|
true,
|
|
)
|
|
.expect("Failed to parse");
|
|
|
|
assert_eq!(
|
|
imports,
|
|
vec![
|
|
ImportDescriptor {
|
|
specifier: "./type_definitions/foo.js".to_string(),
|
|
deno_types: Some("./type_definitions/foo.d.ts".to_string()),
|
|
location: Location {
|
|
filename: "some/file.ts".to_string(),
|
|
line: 9,
|
|
col: 0,
|
|
},
|
|
},
|
|
ImportDescriptor {
|
|
specifier: "./type_definitions/fizz.js".to_string(),
|
|
deno_types: Some("./type_definitions/fizz.d.ts".to_string()),
|
|
location: Location {
|
|
filename: "some/file.ts".to_string(),
|
|
line: 11,
|
|
col: 0,
|
|
},
|
|
},
|
|
ImportDescriptor {
|
|
specifier: "./type_definitions/qat.ts".to_string(),
|
|
deno_types: None,
|
|
location: Location {
|
|
filename: "some/file.ts".to_string(),
|
|
line: 15,
|
|
col: 0,
|
|
},
|
|
},
|
|
]
|
|
);
|
|
|
|
// According to TS docs (https://www.typescriptlang.org/docs/handbook/triple-slash-directives.html)
|
|
// directives that are not at the top of the file are ignored, so only
|
|
// 3 references should be captured instead of 4.
|
|
assert_eq!(
|
|
references,
|
|
vec![
|
|
TsReferenceDescriptor {
|
|
specifier: "dom".to_string(),
|
|
kind: TsReferenceKind::Lib,
|
|
location: Location {
|
|
filename: "some/file.ts".to_string(),
|
|
line: 5,
|
|
col: 0,
|
|
},
|
|
},
|
|
TsReferenceDescriptor {
|
|
specifier: "./type_reference.d.ts".to_string(),
|
|
kind: TsReferenceKind::Types,
|
|
location: Location {
|
|
filename: "some/file.ts".to_string(),
|
|
line: 6,
|
|
col: 0,
|
|
},
|
|
},
|
|
TsReferenceDescriptor {
|
|
specifier: "./type_reference/dep.ts".to_string(),
|
|
kind: TsReferenceKind::Path,
|
|
location: Location {
|
|
filename: "some/file.ts".to_string(),
|
|
line: 7,
|
|
col: 0,
|
|
},
|
|
},
|
|
]
|
|
);
|
|
}
|