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feat(ivy): first steps towards JIT compilation (#23833)

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This commit adds a mechanism by which the @angular/core annotations
for @Component, @Injectable, and @NgModule become decorators which,
when executed at runtime, trigger just-in-time compilation of their
associated types. The activation of these decorators is configured
by the ivy_switch mechanism, ensuring that the Ivy JIT engine does
not get included in Angular bundles unless specifically requested.

PR Close #23833
This commit is contained in:
Alex Rickabaugh
2018-05-09 08:35:25 -07:00
committed by Matias Niemelä
parent 1b6b936ef4
commit 919f42fea1
37 changed files with 1248 additions and 156 deletions
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2
packages/compiler/src/output/abstract_emitter.ts
View File

@ -312,7 +312,7 @@ export abstract class AbstractEmitterVisitor implements o.StatementVisitor, o.Ex
ctx.print(expr, `)`);
return null;
}
visitWrappedNodeExpr(ast: o.WrappedNodeExpr<any>, ctx: EmitterVisitorContext): never {
visitWrappedNodeExpr(ast: o.WrappedNodeExpr<any>, ctx: EmitterVisitorContext): any {
throw new Error('Abstract emitter cannot visit WrappedNodeExpr.');
}
visitReadVarExpr(ast: o.ReadVarExpr, ctx: EmitterVisitorContext): any {

3
packages/compiler/src/output/abstract_js_emitter.ts
View File

@ -70,9 +70,10 @@ export abstract class AbstractJsEmitterVisitor extends AbstractEmitterVisitor {
ctx.println(stmt, `};`);
}
visitWrappedNodeExpr(ast: o.WrappedNodeExpr<any>, ctx: EmitterVisitorContext): never {
visitWrappedNodeExpr(ast: o.WrappedNodeExpr<any>, ctx: EmitterVisitorContext): any {
throw new Error('Cannot emit a WrappedNodeExpr in Javascript.');
}
visitReadVarExpr(ast: o.ReadVarExpr, ctx: EmitterVisitorContext): string|null {
if (ast.builtin === o.BuiltinVar.This) {
ctx.print(ast, 'self');

27
packages/compiler/src/output/output_jit.ts
View File

@ -68,15 +68,12 @@ export class JitEmitterVisitor extends AbstractJsEmitterVisitor {
}
visitExternalExpr(ast: o.ExternalExpr, ctx: EmitterVisitorContext): any {
const value = this.reflector.resolveExternalReference(ast.value);
let id = this._evalArgValues.indexOf(value);
if (id === -1) {
id = this._evalArgValues.length;
this._evalArgValues.push(value);
const name = identifierName({reference: value}) || 'val';
this._evalArgNames.push(`jit_${name}_${id}`);
}
ctx.print(ast, this._evalArgNames[id]);
this._emitReferenceToExternal(ast, this.reflector.resolveExternalReference(ast.value), ctx);
return null;
}
visitWrappedNodeExpr(ast: o.WrappedNodeExpr<any>, ctx: EmitterVisitorContext): any {
this._emitReferenceToExternal(ast, ast.node, ctx);
return null;
}
@ -100,4 +97,16 @@ export class JitEmitterVisitor extends AbstractJsEmitterVisitor {
}
return super.visitDeclareClassStmt(stmt, ctx);
}
private _emitReferenceToExternal(ast: o.Expression, value: any, ctx: EmitterVisitorContext):
void {
let id = this._evalArgValues.indexOf(value);
if (id === -1) {
id = this._evalArgValues.length;
this._evalArgValues.push(value);
const name = identifierName({reference: value}) || 'val';
this._evalArgNames.push(`jit_${name}_${id}`);
}
ctx.print(ast, this._evalArgNames[id]);
}
}