Commit Graph

30 Commits

Author SHA1 Message Date
Ayaz Hafiz 8be0972836 fix(language-service): properly evaluate types in comparable expressions (#36529)
This commit fixes how the language service evaluates the compatibility
of types to work with arbitrary union types. As a result, compatibility
checks are now more strict and can catch similarities or differences
more clearly.

```
number|string == string|null  // OK
number|string == number       // OK
number|string == null         // not comparable
number == string              // not comparable
```

Using Ivy as a backend should provide these diagnoses for free, but we
can backfill them for now.

Closes https://github.com/angular/vscode-ng-language-service/issues/723

PR Close #36529
2020-04-16 16:07:47 -04:00
Keen Yee Liau e485236502 test(language-service): Inline test cases in parsing-cases.ts (#36495)
This commit removes individual components from parsing-cases.ts and
colocate them with the actual tests. This makes the tests more readable.

PR Close #36495
2020-04-08 12:11:04 -07:00
Keen Yee Liau 7f28845f58 test(language-service): remove ng-for-cases.ts (#36470)
This commit removes ng-for-cases.ts and moves all test cases to
inline expressions in TEST_TEMPLATE.

PR Close #36470
2020-04-07 11:34:38 -07:00
Keen Yee Liau 1dd0b6cc18 test(language-service): remove ng-if-cases.ts (#36470)
This commit removes ng-if-cases.ts and moves all test cases to inline
expressions in TEST_TEMPLATE.

PR Close #36470
2020-04-07 11:34:38 -07:00
Keen Yee Liau e145fa13b1 test(language-service): delete expression-cases.ts (#36468)
This commit deletes `expression-cases.ts` and moves the test cases to
inline expressions in TEST_TEMPLATE.

PR Close #36468
2020-04-07 10:20:27 -07:00
Keen Yee Liau eb8c6c7eff test(language-service): Move pipe tests to TEST_TEMPLATE (#36407)
This commit simplifies the completion tests for pipes by moving them to TEST_TEMPLATE.

PR Close #36407
2020-04-06 15:32:33 -07:00
Ayaz Hafiz fe2b6923ba fix(language-service): infer type of elements of array-like objects (#36312)
Currently the language service only provides support for determining the
type of array-like members when the array-like object is an `Array`.
However, there are other kinds of array-like objects, including
`ReadonlyArray`s and `readonly`-property arrays. This commit adds
support for retrieving the element type of arbitrary array-like objects.

Closes #36191

PR Close #36312
2020-04-01 13:24:53 -07:00
ivanwonder 3d46a45fa8 fix(language-service): resolve the variable from the template context first (#35982)
PR Close #35982
2020-03-10 13:27:04 -04:00
ayazhafiz 406419bc0f fix(language-service): fix calculation of pipe spans (#35986)
This commit accomplishes two tasks:

- Fixes the span of queried pipes to only be applied on pipe names
- By consequence, fixes how pipes are located in arguments (previously,
  pipes with arguments could not be found because the span of a pipe
  uses a relative span, while the template position is absolute)

The screenshots attached to the PR for this commit demonstrate the
change.

Closes https://github.com/angular/vscode-ng-language-service/issues/677

PR Close #35986
2020-03-10 13:26:40 -04:00
Pusztai Tibor 54fd33fb80 fix(language-service): infer context type of structural directives (#35537) (#35561)
PR Close #35561
2020-02-21 09:11:54 -08:00
Keen Yee Liau 81241af7ac fix(language-service): Suggest ? and ! operator on nullable receiver (#35200)
Under strict mode, the language service fails to typecheck nullable
symbols that have already been verified to be non-null.

This generates incorrect (false positive) and confusing diagnostics
for users.

To work around this issue in the short term, this commit changes the
diagnostic message from an error to a suggestion, and prompts users to
use the safe navigation operator (?) or non-null assertion operator (!).

For example, instead of

```typescript
{{ optional && optional.toString() }}
```

the following is cleaner:

```typescript
{{ optional?.toString() }}
{{ optional!.toString() }}
```

Note that with this change, users who legitimately make a typo in their
code will no longer see an error. I think this is acceptable, since
false positive is worse than false negative. However, if users follow
the suggestion, add ? or ! to their code, then the error will be surfaced.
This seems a reasonable trade-off.

References:

1. Safe navigation operator (?)
   https://angular.io/guide/template-syntax#the-safe-navigation-operator----and-null-property-paths
2. Non-null assertion operator (!)
   https://angular.io/guide/template-syntax#the-non-null-assertion-operator---

PR closes https://github.com/angular/angular/pull/35070
PR closes https://github.com/angular/vscode-ng-language-service/issues/589

PR Close #35200
2020-02-10 16:43:44 -08:00
ayazhafiz 4ba478267e feat(language-service): specific suggestions for template context diags (#34751)
This commit elaborates diagnostics produced for invalid template
contexts by including the name of the embedded template type using the
template context, and in the common case that the implicity property is
being referenced (e.g. in a `for .. of ..` expression), suggesting to
refine the type of the context. This suggestion is provided because
users will sometimes use a base class as the type of the context in the
embedded view, and a more specific context later on (e.g. in an
`ngOnChanges` method).

Closes https://github.com/angular/vscode-ng-language-service/issues/251

PR Close #34751
2020-01-23 12:25:42 -08:00
ayazhafiz 68025ce09a test(language-service): recognize inputs/ouputs declared in decorator (#34875)
This commit adds a regression test to check that the language service
recognizes inputs and outputs declared in a directive decorator.

See #34874.

PR Close #34875
2020-01-23 10:15:12 -08:00
Keen Yee Liau 6d28a209e4 test(language-service): Remove test cases from parsing-cases.ts (#34716)
This commit removes some test scenarios from `parsing-cases.ts` and
colocate them with the test code instead. This makes the tests easier to
read and understand.

PR Close #34716
2020-01-10 14:44:24 -08:00
Keen Yee Liau c079f38cbb feat(language-service): Show documentation on hover (#34506)
This commit adds dpcumentation to the hover tooltip.

PR closes https://github.com/angular/vscode-ng-language-service/issues/321

PR Close #34506
2020-01-06 11:36:57 -08:00
Keen Yee Liau 2dffe65cfd fix(language-service): completions after "let x of |" in ngFor (#34473)
This commit fixes a bug in which we do testing for completions.
Subsequently, this exposes another bug in our implementation whereby
suggestions are not provided in "ngFor" where there should have been.

Currently, multiple test cases are grouped together in a single
template. This requires the template to be somewhat complete so that
test cases that depend on variables declared earlier would pass.

Consider the following example:

```
  template: `
    <div *ngFor="let ~{for-person}person of ~{for-people}people">
      <span>Name: {{~{for-interp-person}person.~{for-interp-name}name}}</span>
      <span>Age: {{person.~{for-interp-age}age}}</span>
    </div>`,
```

In order to test `~{for-interp-person}`, `people` has to be included after
`~{for-people}`. This means the test case for `~{for-people}` is not
reflective of the actual use case because the variable is already there!
In real case, the expression would be incomplete, and our implementation
failed to take that into account.

This commit breaks such test into individual tests, and fix the bugs in
the underlying implementation.

PR Close #34473
2019-12-19 11:34:03 -08:00
Keen Yee Liau a04f7c0d5f fix(language-service): Proper completions for properties and events (#34445)
This commit fixes autocompletions for properties and events bindings.

The language service will no longer provide bindings like (click) or [id].
Instead, it'll infer the context based on the brackets and provide suggestions
without any brackets.

This fix also adds support for alternative binding syntax such as
`bind-`, `on-`, and `bindon`.

PR closes https://github.com/angular/vscode-ng-language-service/issues/398
PR closes https://github.com/angular/vscode-ng-language-service/issues/474

PR Close #34445
2019-12-18 09:13:31 -08:00
Keen Yee Liau 5eaab85fc0 fix(language-service): Remove completions for let and of in ngFor (#34434)
`let` and `of` should be considered reserved keywords in template syntax
and thus should not be part of the autocomplete suggestions.

For reference, TypeScript does not provide such completions.

This commit removes these results and cleans up the code.

PR Close #34434
2019-12-16 12:45:38 -08:00
ivanwonder 7a86a32040 fix(language-service): apply suggestion (#34177)
PR Close #34177
2019-12-05 13:12:44 -08:00
ivanwonder 2ebaa51514 fix(language-service): bug of accessing a string index signature using dot notation (#34177)
PR Close #34177
2019-12-05 13:12:44 -08:00
ivanwonder 5a227d8d7c feat(language-service): completions support for tuple array (#33928)
PR Close #33928
2019-11-27 12:48:41 -08:00
ayazhafiz 53fc2ed8bf feat(language-service): completions support for indexed types (#33775)
Previously, indexing a container type would not return completions for
the indexed type because for every TypeScript type, the recorded index
type was always marked as `undefined`, regardless of the index
signature.

This PR now returns the index type of TypeScript containers with numeric
or string index signatures. This allows use to generate completions for
arrays and defined index types:

```typescript
interface Container<T> {
  [key: string]: T;
}
const ctr: Container<T>;
ctr['stringKey']. // gives `T.` completions

const arr: T[];
arr[0]. // gives `T.` completions
```

Note that this does _not_ provide completions for properties indexed by
string literals, e.g.

```typescript
interface Container<T> {
  foo: T;
}
const ctr: Container<T>;
ctr['foo']. // does not give `T.` completions
```

Closes angular/vscode-ng-language-service#110
Closes angular/vscode-ng-language-service#277

PR Close #33775
2019-11-15 16:16:06 -08:00
Keen Yee Liau 8b91ea5532 fix(language-service): Resolve template variable in nested ngFor (#33676)
This commit fixes a bug whereby template variables in nested scope are
not resolved properly and instead are simply typed as `any`.

PR closes https://github.com/angular/vscode-ng-language-service/issues/144

PR Close #33676
2019-11-11 16:06:00 -08:00
Keen Yee Liau 1de757993d fix(language-service): Improve signature selection for pipes with args (#33456)
Pipes with arguments like `slice:0` or `slice:0:1` should not produce
diagnostic errors.

PR closes https://github.com/angular/vscode-ng-language-service/issues/345

PR Close #33456
2019-10-29 14:40:35 -07:00
Keen Yee Liau 49eec5d872 fix(language-service): Add directive selectors & banana-in-a-box to completions (#33311)
This commit refactors attribute completions and fixes two bugs:
1. selectors for directives are not provided
2. banana-in-a-box (two way binding) syntax are not provided

PR closes https://github.com/angular/vscode-ng-language-service/issues/358

PR Close #33311
2019-10-23 09:10:39 -07:00
Keen Yee Liau 67c914819a test(language-service): Move completions test to completions_spec.ts (#33159)
There are many specs in `ts_plugin_spec.ts` that exercise the behavior
of completions. These specs should belong in `completions_spec` instead.

In addition,

1. Tests for `getExternalFiles()` added in `ts_plugin_spec.ts`
2. Fixed bug in MockHost.reset() to remove overriden script names
3. Add test for TS diagnostics when `angularOnly = true` is not set

PR Close #33159
2019-10-16 10:23:45 -04:00
Keen Yee Liau 64aae3a9df test(language-service): test project cleanup (#33157)
This PR adds es2015 lib to the `tsconfig.json` of the test project so
that `Promise` could be used. Note this only affects diagnostics in the
IDE. The tsconfig in Language Service Mock Host is the actual config
values used, and it already has es2015 lib.

- Other minor cleanup: Rename imports in `main.ts`.
- Add more cases to `parsing-cases.ts`, which are tested in later PRs

PR Close #33157
2019-10-14 23:42:53 +00:00
Keen Yee Liau 84ba1f012e test(language-service): Remove redundant marker methods in MockHost (#33115)
Remove the following methods from MockHost:

1. `getMarkerLocations`: Replaced with `getLocationMarkerFor()`
2. `getReferenceMarkers`: Replaced with `getReferenceMarkerFor()`

PR Close #33115
2019-10-14 16:20:55 +00:00
Keen Yee Liau 28358b6395 fix(language-service): Turn on strict mode for test project (#32783)
This is the last part in refactoring of the test project.
This PR turns on strict mode for typechecking and fixed tests that
fail under this mode.

PR Close #32783
2019-10-01 11:01:01 -07:00
Keen Yee Liau 9d8dc793da test(language-service): Create proper test project (#32653)
Language service uses a canonical "Tour of Heroes" project to test
various features, but the files are all contained in test_data.ts which
is hard to read and often contains errors that are difficult to catch
without proper IDE syntax highlighting. The directory structure is also
not clear from first glance.

This PR refactors the test project into standalone files in the proper
format.

Next up:
[ ] Update the interface of MockTypeScript to only accept scriptNames.
[ ] Remove test_data.ts

PR Close #32653
2019-09-18 13:07:01 -07:00