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Added cases to cover public static field initializer operations with 'this' biding. (#2283)

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* Added cases to cover public static field initializer operations with 'this' biding.

* Added initializer that throws.

* Adding missing ';'

* Fixing broken test static-field-initializer-error.js. 'function' keyword
was missing.
This commit is contained in:
Caio Lima 2019-08-13 01:21:27 -03:00 committed by Leo Balter
parent 134652ea3c
commit 51b3953d61
10 changed files with 643 additions and 0 deletions
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59
src/class-elements/static-field-init-this-inside-arrow-function.case Normal file
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// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: this in static field initializers refers to class constructor
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
template: default
features: [class-static-fields-public]
---*/
//- elements
static f = () => this;
//- assertions
assert.sameValue(C.f(), C);

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src/class-elements/static-field-init-with-this.case Normal file
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// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Static fields initializer has `this` biding
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
template: default
features: [class-static-fields-public]
---*/
//- elements
static f = 'test';
static g = this.f + '262';
static h = eval('this.g') + 'test';
//- assertions
assert.sameValue(C.f, 'test');
assert.sameValue(C.g, 'test262');
assert.sameValue(C.h, 'test262test');

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// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Static fields can be redeclared
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
template: default
features: [class-static-fields-public]
---*/
//- elements
static f = 'test';
static f = this.f + '262';
static g() {
return 45;
};
static g = this.g();
//- assertions
assert.sameValue(C.f, 'test262');
assert.sameValue(C.g, 45);

63
test/language/expressions/class/elements/static-field-init-this-inside-arrow-function.js Normal file
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// This file was procedurally generated from the following sources:
// - src/class-elements/static-field-init-this-inside-arrow-function.case
// - src/class-elements/default/cls-expr.template
/*---
description: this in static field initializers refers to class constructor (field definitions in a class expression)
esid: prod-FieldDefinition
features: [class-static-fields-public, class]
flags: [generated]
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
---*/
var C = class {
static f = () => this;
}
assert.sameValue(C.f(), C);

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test/language/expressions/class/elements/static-field-init-with-this.js Normal file
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// This file was procedurally generated from the following sources:
// - src/class-elements/static-field-init-with-this.case
// - src/class-elements/default/cls-expr.template
/*---
description: Static fields initializer has `this` biding (field definitions in a class expression)
esid: prod-FieldDefinition
features: [class-static-fields-public, class]
flags: [generated]
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
---*/
var C = class {
static f = 'test';
static g = this.f + '262';
static h = eval('this.g') + 'test';
}
assert.sameValue(C.f, 'test');
assert.sameValue(C.g, 'test262');
assert.sameValue(C.h, 'test262test');

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test/language/expressions/class/elements/static-field-redeclaration.js Normal file
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// This file was procedurally generated from the following sources:
// - src/class-elements/static-field-redeclaration.case
// - src/class-elements/default/cls-expr.template
/*---
description: Static fields can be redeclared (field definitions in a class expression)
esid: prod-FieldDefinition
features: [class-static-fields-public, class]
flags: [generated]
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
---*/
var C = class {
static f = 'test';
static f = this.f + '262';
static g() {
return 45;
};
static g = this.g();
}
assert.sameValue(C.f, 'test262');
assert.sameValue(C.g, 45);

63
test/language/statements/class/elements/static-field-init-this-inside-arrow-function.js Normal file
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// This file was procedurally generated from the following sources:
// - src/class-elements/static-field-init-this-inside-arrow-function.case
// - src/class-elements/default/cls-decl.template
/*---
description: this in static field initializers refers to class constructor (field definitions in a class declaration)
esid: prod-FieldDefinition
features: [class-static-fields-public, class]
flags: [generated]
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
---*/
class C {
static f = () => this;
}
assert.sameValue(C.f(), C);

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test/language/statements/class/elements/static-field-init-with-this.js Normal file
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// This file was procedurally generated from the following sources:
// - src/class-elements/static-field-init-with-this.case
// - src/class-elements/default/cls-decl.template
/*---
description: Static fields initializer has `this` biding (field definitions in a class declaration)
esid: prod-FieldDefinition
features: [class-static-fields-public, class]
flags: [generated]
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
---*/
class C {
static f = 'test';
static g = this.f + '262';
static h = eval('this.g') + 'test';
}
assert.sameValue(C.f, 'test');
assert.sameValue(C.g, 'test262');
assert.sameValue(C.h, 'test262test');

58
test/language/statements/class/elements/static-field-initializer-error.js Normal file
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// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Class evaluation is incomplete when initializer resutls in an abrupt completition
esid: sec-define-field
info: |
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
features: [class-static-fields-public, class]
---*/
function initThrows() {
throw new Test262Error();
}
assert.throws(Test262Error, function() {
class C {
static f = initThrows();
static g;
};
assert(false, 'this should never execute');
}, 'static field initializer should throw exception');

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test/language/statements/class/elements/static-field-redeclaration.js Normal file
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// This file was procedurally generated from the following sources:
// - src/class-elements/static-field-redeclaration.case
// - src/class-elements/default/cls-decl.template
/*---
description: Static fields can be redeclared (field definitions in a class declaration)
esid: prod-FieldDefinition
features: [class-static-fields-public, class]
flags: [generated]
info: |
Updated Productions
ClassElement :
...
static FieldDefinition ;
FieldDefinition :
ClassElementName Initializer_opt
ClassDefinitionEvaluation:
...
27. Let staticFields be a new empty List.
28. For each ClassElement e in order from elements,
a. If IsStatic of e is false, then
...
b. Else,
i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
c. If field is an abrupt completion, then
...
d. If field is not empty,
i. If IsStatic of e is false, append field to instanceFields.
ii. Otherwise, append field to staticFields.
34. For each item fieldRecord in order from staticFields,
a. Perform ? DefineField(F, field).
...
DefineField(receiver, fieldRecord)
1. Assert: Type(receiver) is Object.
2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
3. Let name be fieldRecord.[[Name]].
4. Let initializer be fieldRecord.[[Initializer]].
5. If initializer is not empty, then
a. Let initValue be ? Call(initializer, receiver).
6. Else, let initValue be undefined.
7. If fieldRecord.[[IsAnonymousFunctionDefinition]] is true, then
a. Let hasNameProperty be ? HasOwnProperty(initValue, "name").
b. If hasNameProperty is false, perform SetFunctionName(initValue, fieldName).
8. If fieldName is a Private Name,
a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue).
9. Else,
a. Assert: IsPropertyKey(fieldName) is true.
b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
10. Return.
---*/
class C {
static f = 'test';
static f = this.f + '262';
static g() {
return 45;
};
static g = this.g();
}
assert.sameValue(C.f, 'test262');
assert.sameValue(C.g, 45);