This commit updates compiler_spec.ts in the Ivy LS suite to utilize the new
testing environment which was introduced in the previous commit. Eventually
all specs should be converted, but converting one right now helps ensure
that the new testing env is working properly and able to support real tests.
PR Close#40966
The Angular LS does not provide quick info when the given position is not
inside a template. As an optimization, we can quickly look at the
file and determine if we are at a position that is part of an Angular
template. If not, we bail before asking the compiler for any more
information. Note that the Angular LS _already_ provides no quick info
when outside a template file, but currently asks the compiler to analyze
the program before it determines that information.
PR Close#40956
When certain information is requested from the Angular Language Service, we
know that there will be no additional Angular information if the requested
position is not in an inline template, template url, or style url. To avoid
unnecessary compiler compilations, we short circuit and return `undefined`
before asking the compiler for any type of answer which would trigger a
partial compilation, at the very least.
fixes https://github.com/angular/vscode-ng-language-service/issues/1104
PR Close#40946
This commit updates compiler_spec.ts in the Ivy LS suite to utilize the new
testing environment which was introduced in the previous commit. Eventually
all specs should be converted, but converting one right now helps ensure
that the new testing env is working properly and able to support real tests.
PR Close#40679
The Ivy Language Service codebase testing suite contains a few testing
utilities which allow for assertions of Language Service operations against
an in-memory project. However, this existing utility lacks the flexibility
to test more complex scenarios, such as those involving multiple TS projects
with dependencies between them.
This commit introduces a new 'testing' package for the Ivy LS which attempts
to more faithfully represent the possible states of an IDE, and allows for
testing of more advanced scenarios. The new utility borrows from the prior
version and is geared towards more ergonomic testing. Only basic
functionality is present in this initial implementation, but this will grow
over time.
PR Close#40679
In 5c547675b11a24b16c20df1718583a0e7ed49cbd the `EventEmitter.subscribe`
API was extended with a new signature that allows the emitter's generic
type `T` to flow into the subscribe callback. This new signature removes
the need for the special `_outputHelper` function that used to be
emitted into TCBs when `strictOutputEventTypes`/`strictTemplates` is
enabled.
PR Close#40738
Two motivations behind this change:
1. We would like to expose the types of the Language Service to external
users (like the VSCode extension) via the npm package, on the top
level of the package
2. We would like the View Engine and Ivy LS to share a common interface
(notably after the inclusion of `getTcb`, the Ivy LS upholds a
strict superset of `ts.LanguageService`; previously both VE and Ivy
LS were aligned on `ts.LanguageService`.)
To this end, this commit refactors the exports on the toplevel of the
`language-service/` package to just be types common to both the VE and
Ivy language services. The VE and Ivy build targets then import and use
these types accordingly, and the expectation is that an external user
will just import the relevant typings from the toplevel package without
diving into either the VE or Ivy sources.
Follow up on #40607
PR Close#40621
The `TemplateTypeChecker.overrideComponentTemplate` operation was originally
conceived as a "fast path" for the Language Service to react to a template
change without needing to go through a full incremental compilation step. It
served this purpose until the previous commit, which switches the LS to use
the new resource-only incremental change operation provided by `NgCompiler`.
`overrideComponentTemplate` is now no longer utilized, and is known to have
several hard-to-overcome issues that prevent it from being useful in any
other situations. As such, this commit removes it entirely.
PR Close#40585
This commit changes the Language Service's "compiler factory" mechanism to
leverage the new resource-only update path for `NgCompiler`. When an
incoming change only affects a resource file like a component template or
stylesheet, going through the new API allows the Language Service to avoid
unnecessary incremental steps of the `NgCompiler` and return answers more
efficiently.
PR Close#40585
When parsing interpolations, if we encounter an empty interpolation
(`{{}}`), the current code uses a "pretend" value of `$implicit` for the
name as if the interplotion were really `{{$implicit}}`. This is
problematic because the spans are then incorrect downstream since they
are based off of the `$implicit` text.
This commit changes the interpretation of empty interpolations so that
the text is simply an empty string.
Fixes https://github.com/angular/vscode-ng-language-service/issues/1077
Fixes https://github.com/angular/vscode-ng-language-service/issues/1078
PR Close#40583
If the template parse option `leadingTriviaChars` is configured to
consider whitespace as trivia, any trailing whitespace of an element
would be considered as leading trivia of the subsequent element, such
that its `start` span would start _after_ the whitespace. This means
that the start span cannot be used to mark the end of the current
element, as its trailing whitespace would then be included in its span.
Instead, the full start of the subsequent element should be used.
To harden the tests that for the Ivy parser, the test utility `parseR3`
has been adjusted to use the same configuration for `leadingTriviaChars`
as would be the case in its production counterpart `parseTemplate`. This
uncovered another bug in offset handling of the interpolation parser,
where the absolute offset was computed from the start source span
(which excludes leading trivia) whereas the interpolation expression
would include the leading trivia. As such, the absolute offset now also
uses the full start span.
Fixes#39148
PR Close#40513
Previously, the incremental flow for NgCompiler was simple: when creating a
new NgCompiler instance, the consumer could pass state from a previous
compilation, which would cause the new compilation to be performed
incrementally. "Local" information about TypeScript files which had not
changed would be passed from the old compilation to the new and reused,
while "global" information would always be recalculated.
However, this flow could be made more efficient in certain cases, such as
when no TypeScript files are changed in a new compilation. In this case,
_all_ information extracted during the first compilation is reusable. Doing
this involves reusing the previous `NgCompiler` instance (the container for
such global information) and updating it, instead of creating a new one for
the next compilation. This approach works cleanly, but complicates the
lifecycle of `NgCompiler`.
To prevent consumers from having to deal with the mechanics of reuse vs
incremental steps of `NgCompiler`, a new `CompilationTicket` mechanism is
added in this commit. Consumers obtain a `CompilationTicket` via one of
several code paths depending on the nature of the incoming compilation, and
use the `CompilationTicket` to obtain an `NgCompiler` instance. This
instance may be a fresh compilation, a new `NgCompiler` for an incremental
compilation, or an existing `NgCompiler` that's been updated to optimally
process a resource-only change. Consumers can use the new `NgCompiler`
without knowledge of its provenance.
PR Close#40561
The Language Service uses the source span of AST nodes to recognize which
node a user has selected, given their cursor position in a template. This is
used to trigger autocompletion.
The previous source span of BindingPipe nodes created a problem when:
1) the pipe binding had no identifier (incomplete or in-progress expression)
2) the user typed trailing whitespace after the pipe character ('|')
For example, the expression `{{foo | }}`. If the cursor preceded the '}' in
that expression, the Language Service was unable to detect that the user was
autocompleting the BindingPipe expression, since the span of the BindingPipe
ended after the '|'.
This commit changes the expression parser to expand the span of BindingPipe
expressions with a missing identifier, to include any trailing whitespace.
This allows the Language Service to correctly recognize this case as
targeting the BindingPipe and complete it successfully. The `nameSpan` of
the BindingPipe is also moved to be right-aligned with the end of any
whitespace present in the pipe binding expression.
This change allows for the disabled test in the Language Service for pipe
completion in this case to be re-enabled.
PR Close#40346
The `LanguageServiceAdapter` must implement `realpath` in order to resolve
symlinks in `node_modules`.
Local libraries are often symlinked in `node_modules` by adding a local
dependency in `package.json`.
Fix https://github.com/angular/vscode-ng-language-service/issues/1083
PR Close#40593
This PR adds a way for the language server to retrieve compiler options
diagnostics via `languageService.getCompilerOptionsDiagnostics()`.
This will be used by the language server to show a prompt in the editor if
users don't have `strict` or `fullTemplateTypeCheck` turned on.
Ref https://github.com/angular/vscode-ng-language-service/issues/1053
PR Close#40423
This patch adds an API to retrieve the template typecheck block for a
template (if any) at a file location, and a selection of the TS node
in the TCB corresponding to the template node at which the request for
a TCB was made (if any).
Probably not something we want to land soon, but a useful debugging tool
for folks working with TCBs.
PR Close#39974
Rather than mutating the span on the template when renaming literal strings,
this commit updates the logic to mutate the `TextSpan` equivalent that
is used by the Language Service.
PR Close#40484
The initial implementation assumed that the consuming editors would
de-duplicate rename locations. In fact, vscode treats overlapping rename
locations as distinct and errors when trying to preview the renames.
This commit updates the language service to de-duplicate exact file+span
matches before returning rename and reference locations.
While vscode _does_ de-duplicate reference results, it still makes sense
to de-duplicate them on our side when possible to make tests more
understandable. If a template has 3 instances of a variable, it makes
sense to get get 3 reference results rather than 4+ with some duplicates.
PR Close#40454
The current "go to definition" is broken for template variables and
references when a template is overridden. This is because we get the
file url from the source span, which uses the overridden name
'override.html'. Instead, we can retrieve the template file from the
compiler in the same manner that is done for references.
Another way to fix this would have been to use the real template file path when
overriding a template, but this was the more straightforward fix since
the strategy was already used in find references and rename locations.
fixes https://github.com/angular/vscode-ng-language-service/issues/1054
PR Close#40455
The `getRenameInfo` action is used by consumers to
1. Determine if a location is a candidate for renames
2. Determine what text to use as the starting point for the rename
PR Close#40439
This commit lays the groundwork for potentially providing rename
locations from the Ivy native LS. The approach is very similar to what
was done with the feature to find references. One difference, however,
is that we did not require the references to be fully "correct". That
is, the exact text spans did not matter so much, as long as we provide a
location that logically includes the referenced item.
An example of a necessary difference between rename locations and references is
directives. The entire element in the template is a "reference" of the
directive's class. However, it's not a valid location to be renamed. The
same goes for aliased inputs/outputs. The locations in the template
directly map to the class property, which is correct for references, but
would not be correct for rename locations, which should instead map to
the string node fo the alias.
As an initial approach to address the aforementioned issues with rename
locations, we check that all the rename location nodes have the same text. If
_any_ node has text that differs from the request, we do not return any
rename locations. This works as a way to prevent renames that could
break the the program by missing some required nodes in the rename action, but
allowing other nodes to be renamed.
PR Close#40140
Report non-template diagnotics when calling `getDiagnotics` function of
the language service we only returned template diagnotics. This change
causes it to return all diagnotics, not just diagnostics from the
template type checker.
PR Close#40331
Currently the language service has to force `compileNonExportedClasses` to
`true` to handle inline NgModules in tests, regardless of the value in user's
tsconfig.json.
However, the override is not reinstated after the compiler option changes
(triggered by a change in tsconfig.json).
This commit fixes the bug.
PR Close#40364
This commit adds special handling to the completion builder by detecting
a two way binding context and ensuring that we filter out any `Input`s
that do not support two way binding.
PR Close#40185
Rather than expecting that a position in a template only targets a
single node, this commit simply adjusts the approach to account for two way
bindings. Specifically, we attempt to get references for each targeted
node and then return the combination of all results, or `undefined` if
none of the target nodes had references.
PR Close#40185
Rather than expecting that a position in a template only targets a
single node, this commit adjusts the approach to account for two way
bindings. In particular, we attempt to get definitions for each targeted
node and then return the combination of all results, or `undefined` if
none of the target nodes had definitions.
PR Close#40185
Adjust the visitor logic of the template target as well as the
consumption of the visitor result to account for two-way bindings.
This sets up downstream consumers for being able to handle the
possibility of a template position that targets both an input and an
output.
PR Close#40185
The current template target implementation only allows a way to
represent the template position as targeting a single node in the
template AST. However, there is at least one case (banana-in-a-box)
where a given template position refers to two template targets.
This commit expands the contexts that the `TemplateTarget` can return to
include support for the banana-in-a-box syntax, which has two logically
targetted AST nodes given a position within the `keySpan` of the
binding.
PR Close#40185
This commit ensures that the template type checker returns symbols for
all outputs if a template output listener binds to more than one.
PR Close#40144
We need a means to preserve typecheck files when a project is reloaded,
otherwise the Ivy compiler will throw an error when it's unable to find
them. This commit implements `getExternalFiles()` called by the langauge
server to achieve this goal.
For more info see https://github.com/angular/vscode-ng-language-service/issues/1030
PR Close#40162
`ts.server.ServerHost.resolvePath()` is different from Angular's
`FileSystem.resolve()` because the signature of the former is
```ts
resolvePath(path: string): string; // ts.server.ServerHost
```
whereas the signature of the latter is
```ts
resolve(...paths: string[]): AbsoluteFsPath; // FileSystem on compiler-cli
```
The current implementation calls `path.join()` to concatenate all the input
paths and pass the result to `ts.server.ServerHost.resolvePath()`, but doing
so results in filenames like
```
/foo/bar/baz/foo/bar/baz/tsconfig.json
```
if both input paths are absolute.
`ts.server.ServerHost` should not be used to implement the
`resolve()` method expected by Angular's `FileSystem`.
We should use Node's `path.resolve()` instead, which will correctly collapse
the absolute paths.
Fix https://github.com/angular/vscode-ng-language-service/issues/1035
PR Close#40242
When resolving references, the Ivy compiler has a few strategies it could use.
For relative path, one of strategies is [`RelativePathStrategy`](
https://github.com/angular/angular/blob/master/packages/compiler-cli/src/
ngtsc/imports/README.md#relativepathstrategy). This strategy
relies on `compilerOptions.rootDir` and `compilerOptions.rootDirs` to perform
the resolution, but language service only passes `rootDirs` to the compiler,
and not `rootDir`.
In reality, `rootDir` is very different from `rootDirs` even though they
sound the same.
According to the official [TS documentation][1],
> `rootDir` specifies the root directory of input files. Only use to control
> the output directory structure with --outDir.
> `rootDirs` is a list of root folders whose combined content represent the
> structure of the project at runtime. See [Module Resolution documentation](
> https://www.typescriptlang.org/docs/handbook/
> module-resolution.html#virtual-directories-with-rootdirs)
> for more details.
For now, we keep the behavior between compiler and language service consistent,
but we will revisit the notion of `rootDir` and how it is used later.
Fixangular/vscode-ng-language-service#1039
[1]: https://www.typescriptlang.org/docs/handbook/compiler-options.html
PR Close#40243
Given the template
`<div (click)="doSomething($event)"></div>`
If you request references for the `$event`, the results include both `$event` and `(click)="doSomething($event)"`.
This happens because in the TCB, `$event` is passed to the `subscribe`/`addEventListener`
function as an argument. So when we ask typescript to give us the references, we
get the result from the usage in the subscribe body as well as the one passed in as an argument.
This commit adds an identifier to the `$event` parameter in the TCB so
that the result returned from `getReferencesAtPosition` can be
identified and filtered out.
fixes#40157
PR Close#40158
This commit fixes an issue in the ivy native language service
that caused the logic that finds a target node given a template
position to throw away the results. This happened because the
source span of a variable node in the shorthand structural
directive syntax (i.e. `*ngIf=`) included the entire binding.
The result was that we would add the variable node to the path and then
later detect that the cursor was outside the key and value spans and
throw away the whole result. In general, we do this because we do not
want to show information when the cursor is between a key/value
(`inputA=¦"123"`). However, when using the shorthand syntax, we run into
the situation where we can match an `AttributeBinding` as well as the
vaariable in `*ngIf="som¦eValue as myLocalVar"`. This commit updates the
visitor to retain enough information in the visit path to throw away
invalid targets but keep valid ones if there were multiple results on a
`t.Element` or `t.Template`.
PR Close#40239
Durring analysis we find template parse errors. This commit changes
where the type checking context stores the parse errors. Previously, we
stored them on the AnalysisOutput this commit changes the errors to be
stored on the TemplateData (which is a property on the shim). That way,
the template parse errors can be grouped by template.
Previously, if a template had a parse error, we poisoned the module and
would not procede to find typecheck errors. This change does not poison
modules whose template have typecheck errors, so that ngtsc can emit
typecheck errors for templates with parse errors.
Additionally, all template diagnostics are produced in the same place.
This allows requesting just the template template diagnostics or just
other types of errors.
PR Close#40026
Andrew Scott
Alex Rickabaugh
Keen Yee Liau
JoostK
ayazhafiz
Zach Arend
Alexey Elin