cerxes/babel
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Add support for flow type spread (#418)

Browse Source 
* Add support for flow type spread

* Broaden spreadable types from primary to all, more tests

* Eliminate variance sigil for type spreads, better errors, fix tests
This commit is contained in:
Conrad Buck
2017-04-03 13:05:05 -07:00
committed by Daniel Tschinder
parent 4d18221098
commit 213fdab063
11 changed files with 635 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
src/plugins/flow.js
View File

@@ -219,7 +219,7 @@ pp.flowParseInterfaceish = function (node) {
} while (this.eat(tt.comma));
}
node.body = this.flowParseObjectType(true);
node.body = this.flowParseObjectType(true, false, false);
};
pp.flowParseInterfaceExtends = function () {
@@ -403,7 +403,7 @@ pp.flowParseObjectTypeCallProperty = function (node, isStatic) {
return this.finishNode(node, "ObjectTypeCallProperty");
};
pp.flowParseObjectType = function (allowStatic, allowExact) {
pp.flowParseObjectType = function (allowStatic, allowExact, allowSpread) {
const oldInType = this.state.inType;
this.state.inType = true;
@@ -450,24 +450,40 @@ pp.flowParseObjectType = function (allowStatic, allowExact) {
}
nodeStart.callProperties.push(this.flowParseObjectTypeCallProperty(node, isStatic));
} else {
propertyKey = this.flowParseObjectPropertyKey();
if (this.isRelational("<") || this.match(tt.parenL)) {
// This is a method property
if (this.match(tt.ellipsis)) {
if (!allowSpread) {
this.unexpected(
null,
"Spread operator cannnot appear in class or interface definitions"
);
}
if (variance) {
this.unexpected(variance.start);
this.unexpected(variance.start, "Spread properties cannot have variance");
}
nodeStart.properties.push(this.flowParseObjectTypeMethod(startPos, startLoc, isStatic, propertyKey));
} else {
if (this.eat(tt.question)) {
optional = true;
}
node.key = propertyKey;
node.value = this.flowParseTypeInitialiser();
node.optional = optional;
node.static = isStatic;
node.variance = variance;
this.expect(tt.ellipsis);
node.argument = this.flowParseType();
this.flowObjectTypeSemicolon();
nodeStart.properties.push(this.finishNode(node, "ObjectTypeProperty"));
nodeStart.properties.push(this.finishNode(node, "ObjectTypeSpreadProperty"));
} else {
propertyKey = this.flowParseObjectPropertyKey();
if (this.isRelational("<") || this.match(tt.parenL)) {
// This is a method property
if (variance) {
this.unexpected(variance.start);
}
nodeStart.properties.push(this.flowParseObjectTypeMethod(startPos, startLoc, isStatic, propertyKey));
} else {
if (this.eat(tt.question)) {
optional = true;
}
node.key = propertyKey;
node.value = this.flowParseTypeInitialiser();
node.optional = optional;
node.static = isStatic;
node.variance = variance;
this.flowObjectTypeSemicolon();
nodeStart.properties.push(this.finishNode(node, "ObjectTypeProperty"));
}
}
}
@@ -629,10 +645,10 @@ pp.flowParsePrimaryType = function () {
return this.flowIdentToTypeAnnotation(startPos, startLoc, node, this.parseIdentifier());
case tt.braceL:
return this.flowParseObjectType(false, false);
return this.flowParseObjectType(false, false, true);
case tt.braceBarL:
return this.flowParseObjectType(false, true);
return this.flowParseObjectType(false, true, true);
case tt.bracketL:
return this.flowParseTupleType();