refactor(compiler): Support unary ops in template pipeline

Template Pipeline can now ingest and emit unary ops, such as `+` and `-`.

packages/compiler-cli/test/compliance/test_cases/r3_view_compiler/GOLDEN_PARTIAL.js

@@ -63,3 +63,50 @@ export declare class TodoModule {
     static ɵinj: i0.ɵɵInjectorDeclaration<TodoModule>;
 }
 
+/****************************************************************************************************
+ * PARTIAL FILE: operators.js
+ ****************************************************************************************************/
+import { Component, NgModule } from '@angular/core';
+import * as i0 from "@angular/core";
+export class MyApp {
+}
+MyApp.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "0.0.0-PLACEHOLDER", ngImport: i0, type: MyApp, deps: [], target: i0.ɵɵFactoryTarget.Component });
+MyApp.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "0.0.0-PLACEHOLDER", type: MyApp, selector: "ng-component", ngImport: i0, template: `
+    {{ 1 + 2 }}
+	{{ (1 % 2) + 3 / 4 * 5 }}
+	{{ +1 }}
+`, isInline: true });
+i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "0.0.0-PLACEHOLDER", ngImport: i0, type: MyApp, decorators: [{
+            type: Component,
+            args: [{
+                    template: `
+    {{ 1 + 2 }}
+	{{ (1 % 2) + 3 / 4 * 5 }}
+	{{ +1 }}
+`
+                }]
+        }] });
+export class MyModule {
+}
+MyModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "0.0.0-PLACEHOLDER", ngImport: i0, type: MyModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
+MyModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "0.0.0-PLACEHOLDER", ngImport: i0, type: MyModule, declarations: [MyApp] });
+MyModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "0.0.0-PLACEHOLDER", ngImport: i0, type: MyModule });
+i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "0.0.0-PLACEHOLDER", ngImport: i0, type: MyModule, decorators: [{
+            type: NgModule,
+            args: [{ declarations: [MyApp] }]
+        }] });
+
+/****************************************************************************************************
+ * PARTIAL FILE: operators.d.ts
+ ****************************************************************************************************/
+import * as i0 from "@angular/core";
+export declare class MyApp {
+    static ɵfac: i0.ɵɵFactoryDeclaration<MyApp, never>;
+    static ɵcmp: i0.ɵɵComponentDeclaration<MyApp, "ng-component", never, {}, {}, never, never, false, never>;
+}
+export declare class MyModule {
+    static ɵfac: i0.ɵɵFactoryDeclaration<MyModule, never>;
+    static ɵmod: i0.ɵɵNgModuleDeclaration<MyModule, [typeof MyApp], never, never>;
+    static ɵinj: i0.ɵɵInjectorDeclaration<MyModule>;
+}
+

packages/compiler-cli/test/compliance/test_cases/r3_view_compiler/TEST_CASES.json

@@ -17,6 +17,23 @@
           "failureMessage": "Incorrect template"
         }
       ]
+    },
+    {
+      "description": "should handle binary and unary operators",
+      "inputFiles": [
+        "operators.ts"
+      ],
+      "expectations": [
+        {
+          "files": [
+            {
+              "expected": "operators_template.js",
+              "generated": "operators.js"
+            }
+          ],
+          "failureMessage": "Incorrect template"
+        }
+      ]
     }
   ]
 }

packages/compiler-cli/test/compliance/test_cases/r3_view_compiler/operators.ts

@@ -0,0 +1,15 @@
+import {Component, NgModule} from '@angular/core';
+
+@Component({
+  template: `
+    {{ 1 + 2 }}
+	{{ (1 % 2) + 3 / 4 * 5 }}
+	{{ +1 }}
+`
+})
+export class MyApp {
+}
+
+@NgModule({declarations: [MyApp]})
+export class MyModule {
+}

packages/compiler-cli/test/compliance/test_cases/r3_view_compiler/operators_template.js

@@ -0,0 +1,8 @@
+template: function MyApp_Template(rf, $ctx$) {
+	if (rf & 1) {
+	  $i0$.ɵɵtext(0);
+	} if (rf & 2) {
+	  i0.ɵɵtextInterpolate3(" ", 1 + 2, " ", 1 % 2 + 3 / 4 * 5, " ", +1, "\n");
+	}
+  }
+

packages/compiler/src/template/pipeline/ir/src/expression.ts

@@ -1043,6 +1043,8 @@ export function transformExpressionsInExpression(
   } else if (expr instanceof o.BinaryOperatorExpr) {
     expr.lhs = transformExpressionsInExpression(expr.lhs, transform, flags);
     expr.rhs = transformExpressionsInExpression(expr.rhs, transform, flags);
+  } else if (expr instanceof o.UnaryOperatorExpr) {
+    expr.expr = transformExpressionsInExpression(expr.expr, transform, flags);
   } else if (expr instanceof o.ReadPropExpr) {
     expr.receiver = transformExpressionsInExpression(expr.receiver, transform, flags);
   } else if (expr instanceof o.ReadKeyExpr) {

packages/compiler/src/template/pipeline/src/ingest.ts

@@ -637,7 +637,18 @@ function convertAst(
   } else if (ast instanceof e.LiteralPrimitive) {
     return o.literal(ast.value, undefined, convertSourceSpan(ast.span, baseSourceSpan));
   } else if (ast instanceof e.Unary) {
-    throw new Error('TODO: Support unary operations, which extend binary ops');
+    switch (ast.operator) {
+      case '+':
+        return new o.UnaryOperatorExpr(
+            o.UnaryOperator.Plus, convertAst(ast.expr, job, baseSourceSpan), undefined,
+            convertSourceSpan(ast.span, baseSourceSpan));
+      case '-':
+        return new o.UnaryOperatorExpr(
+            o.UnaryOperator.Minus, convertAst(ast.expr, job, baseSourceSpan), undefined,
+            convertSourceSpan(ast.span, baseSourceSpan));
+      default:
+        throw new Error(`AssertionError: unknown unary operator ${ast.operator}`);
+    }
   } else if (ast instanceof e.Binary) {
     const operator = BINARY_OPERATORS.get(ast.operation);
     if (operator === undefined) {