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feat(compiler): support a non-null postfix assert (#16672)

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Template expressions can now use a post-fix `!` operator
that asserts the target of the operator is not null. This is
similar to the TypeScript non-null assert operator. Expressions
generated in factories will be generated with the non-null assert
operator.

Closes: #10855
This commit is contained in:
Chuck Jazdzewski
2017-05-11 10:15:54 -07:00
committed by Jason Aden
parent 2eca6e67e1
commit b9521b568f
16 changed files with 122 additions and 5 deletions
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1
packages/compiler/test/output/js_emitter_spec.ts
View File

@ -146,6 +146,7 @@ export function main() {
const lhs = o.variable('lhs');
const rhs = o.variable('rhs');
expect(emitStmt(o.not(someVar).toStmt())).toEqual('!someVar;');
expect(emitStmt(o.assertNotNull(someVar).toStmt())).toEqual('someVar;');
expect(
emitStmt(someVar.conditional(o.variable('trueCase'), o.variable('falseCase')).toStmt()))
.toEqual('(someVar? trueCase: falseCase);');

1
packages/compiler/test/output/ts_emitter_spec.ts
View File

@ -232,6 +232,7 @@ export function main() {
const rhs = o.variable('rhs');
expect(emitStmt(someVar.cast(o.INT_TYPE).toStmt())).toEqual('(<number>someVar);');
expect(emitStmt(o.not(someVar).toStmt())).toEqual('!someVar;');
expect(emitStmt(o.assertNotNull(someVar).toStmt())).toEqual('someVar!;');
expect(
emitStmt(someVar.conditional(o.variable('trueCase'), o.variable('falseCase')).toStmt()))
.toEqual('(someVar? trueCase: falseCase);');