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feat(ivy): ngtsc compiles @Component, @Directive, @NgModule (#24427)

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This change supports compilation of components, directives, and modules
within ngtsc. Support is not complete, but is enough to compile and test
//packages/core/test/bundling/todo in full AOT mode. Code size benefits
are not yet achieved as //packages/core itself does not get compiled, and
some decorators (e.g. @Input) are not stripped, leading to unwanted code
being retained by the tree-shaker. This will be improved in future commits.

PR Close #24427
This commit is contained in:
Alex Rickabaugh
2018-05-31 15:50:02 -07:00
committed by Miško Hevery
parent 0f7e4fae20
commit 27bc7dcb43
69 changed files with 1884 additions and 607 deletions
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26
packages/compiler-cli/src/ngtsc/util/src/visitor.ts
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@ -33,7 +33,7 @@ export abstract class Visitor {
/**
* Maps statements to an array of statements that should be inserted before them.
*/
private _before = new Map<ts.Statement, ts.Statement[]>();
private _before = new Map<ts.Node, ts.Statement[]>();
/**
* Visit a class declaration, returning at least the transformed declaration and optionally other
@ -44,16 +44,15 @@ export abstract class Visitor {
return {node};
}
private _visitClassDeclaration(node: ts.ClassDeclaration, context: ts.TransformationContext):
ts.ClassDeclaration {
const result = this.visitClassDeclaration(node);
const visited = ts.visitEachChild(result.node, child => this._visit(child, context), context);
private _visitListEntryNode<T extends ts.Statement>(
node: T, visitor: (node: T) => VisitListEntryResult<ts.Statement, T>): T {
const result = visitor(node);
if (result.before !== undefined) {
// Record that some nodes should be inserted before the given declaration. The declaration's
// parent's _visit call is responsible for performing this insertion.
this._before.set(visited, result.before);
this._before.set(result.node, result.before);
}
return visited;
return result.node;
}
/**
@ -61,11 +60,6 @@ export abstract class Visitor {
*/
visitOtherNode<T extends ts.Node>(node: T): T { return node; }
private _visitOtherNode<T extends ts.Node>(node: T, context: ts.TransformationContext): T {
return ts.visitEachChild(
this.visitOtherNode(node), child => this._visit(child, context), context);
}
/**
* @internal
*/
@ -73,10 +67,14 @@ export abstract class Visitor {
// First, visit the node. visitedNode starts off as `null` but should be set after visiting
// is completed.
let visitedNode: T|null = null;
node = ts.visitEachChild(node, child => this._visit(child, context), context) as T;
if (ts.isClassDeclaration(node)) {
visitedNode = this._visitClassDeclaration(node, context) as typeof node;
visitedNode = this._visitListEntryNode(
node, (node: ts.ClassDeclaration) => this.visitClassDeclaration(node)) as typeof node;
} else {
visitedNode = this._visitOtherNode(node, context);
visitedNode = this.visitOtherNode(node);
}
// If the visited node has a `statements` array then process them, maybe replacing the visited