[FIX] qweb: add support for spread operator

closes #575

tests/component/component.test.ts

@@ -5581,14 +5581,14 @@ describe("t-call", () => {
     env.qweb.addTemplate("sub", `<Child/>`);
     let child;
     class Child extends Component<any, any> {
-      static template = xml `<span>lucas</span>`
+      static template = xml`<span>lucas</span>`;
       constructor() {
         super(...arguments);
         child = this;
       }
     }
     class Parent extends Component<any, any> {
-      static components = { Child }
+      static components = { Child };
       static template = xml`<div><t t-call="sub"/></div>`;
     }
     const parent = new Parent();
@@ -5607,10 +5607,10 @@ describe("t-call", () => {
         super(...arguments);
         child = this;
       }
-      static template = xml `<span>lucas</span>`
+      static template = xml`<span>lucas</span>`;
     }
     class Parent extends Component<any, any> {
-      static components = { Child }
+      static components = { Child };
       static template = xml`<t t-call="sub"/>`;
     }
     const parent = new Parent();

tests/qweb/__snapshots__/qweb.test.ts.snap

@@ -1772,6 +1772,22 @@ exports[`t-esc t-esc is escaped 1`] = `
 }"
 `;
 
+exports[`t-esc t-esc work with spread operator 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let h = this.h;
+    let c1 = [], p1 = {key:1};
+    let vn1 = h('span', p1, c1);
+    let _2 = [...scope['state'].list];
+    if (_2 != null) {
+        c1.push({text: _2});
+    }
+    return vn1;
+}"
+`;
+
 exports[`t-esc t-esc=0 is escaped 1`] = `
 "function anonymous(context, extra
 ) {

tests/qweb/qweb.test.ts

@@ -141,11 +141,13 @@ describe("t-esc", () => {
     qweb.addTemplate("test", `<span t-esc="var">nope</span>`);
     expect(renderToString(qweb, "test")).toBe("<span>nope</span>");
   });
+
   test("t-esc is escaped", () => {
     qweb.addTemplate("test", `<div><t t-set="var"><p>escaped</p></t><t t-esc="var"/></div>`);
     const domRendered = renderToDOM(qweb, "test");
     expect(domRendered.textContent).toBe("<p>escaped</p>");
   });
+
   test("t-esc=0 is escaped", () => {
     qweb.addTemplate("test", `<span><t t-esc="0"/></span>`);
     qweb.addTemplate("testCaller", `<div><t t-call="test"><p>escaped</p></t></div>`);
@@ -176,6 +178,12 @@ describe("t-esc", () => {
       "<div><p>false</p><p></p><p></p><p>0</p><p></p></div>"
     );
   });
+
+  test("t-esc work with spread operator", () => {
+    qweb.addTemplate("test", `<span><t t-esc="[...state.list]"/></span>`);
+    const result = renderToString(qweb, "test", { state: { list: [1, 2] } });
+    expect(result).toBe("<span>1,2</span>");
+  });
 });
 
 describe("t-raw", () => {

tests/qweb/qweb_expressions.test.ts

@@ -50,6 +50,12 @@ describe("tokenizer", () => {
       { type: "OPERATOR", value: "typeof " },
       { type: "SYMBOL", value: "a" }
     ]);
+
+    expect(tokenize("a...1")).toEqual([
+      { type: "SYMBOL", value: "a" },
+      { type: "OPERATOR", value: "..." },
+      { type: "VALUE", value: "1" }
+    ]);
   });
 
   test("strings", () => {
@@ -177,4 +183,10 @@ describe("expression evaluation", () => {
     expect(compileExpr("a -= b", {})).toBe("scope['a']-=scope['b']");
     expect(compileExpr("a.b = !a.b", {})).toBe("scope['a'].b=!scope['a'].b");
   });
+
+  test("spread operator", () => {
+    expect(compileExpr("[...state.list]", {})).toBe("[...scope['state'].list]");
+    expect(compileExpr("f(...state.list)", {})).toBe("scope['f'](...scope['state'].list)");
+    expect(compileExpr("f([...list])", {})).toBe("scope['f']([...scope['list']])");
+  });
 });