introduce templates (#4603)

test/compress/templates.js

@@ -53,6 +53,26 @@ tagged_chain: {
     node_version: ">=4"
 }
 
+tag_parenthesis_arrow: {
+    input: {
+        console.log((s => s.raw[0])`\tPASS`.slice(2));
+    }
+    expect_exact: "console.log((s=>s.raw[0])`\\tPASS`.slice(2));"
+    expect_stdout: "PASS"
+    node_version: ">=4"
+}
+
+tag_parenthesis_new: {
+    input: {
+        (new function() {
+            return console.log;
+        })`foo`;
+    }
+    expect_exact: "(new function(){return console.log})`foo`;"
+    expect_stdout: true
+    node_version: ">=4"
+}
+
 malformed_escape: {
     input: {
         (function(s) {
@@ -68,6 +88,7 @@ malformed_escape: {
 evaluate: {
     options = {
         evaluate: true,
+        templates: false,
     }
     input: {
         console.log(`foo ${ function(a, b) {
@@ -80,3 +101,100 @@ evaluate: {
     expect_stdout: "foo 42"
     node_version: ">=4"
 }
+
+evaluate_templates: {
+    options = {
+        evaluate: true,
+        templates: true,
+    }
+    input: {
+        console.log(`foo ${ function(a, b) {
+            return a * b;
+        }(6, 7) }`);
+    }
+    expect: {
+        console.log("foo 42");
+    }
+    expect_stdout: "foo 42"
+    node_version: ">=4"
+}
+
+partial_evaluate: {
+    options = {
+        evaluate: true,
+        templates: true,
+    }
+    input: {
+        console.log(`${6 * 7} foo ${console ? `PA` + "SS" : `FA` + `IL`}`);
+    }
+    expect: {
+        console.log(`42 foo ${console ? "PASS" : "FAIL"}`);
+    }
+    expect_stdout: "42 foo PASS"
+    node_version: ">=4"
+}
+
+malformed_evaluate: {
+    options = {
+        evaluate: true,
+        templates: true,
+    }
+    input: {
+        console.log(`\67 ${6 * 7}`);
+    }
+    expect: {
+        console.log(`\67 42`);
+    }
+    expect_stdout: true
+    node_version: ">=4"
+}
+
+unsafe_evaluate: {
+    options = {
+        evaluate: true,
+        templates: true,
+        unsafe: true,
+    }
+    input: {
+        console.log(String.raw`\uFo`);
+    }
+    expect: {
+        console.log("\\uFo");
+    }
+    expect_stdout: "\\uFo"
+    node_version: ">=8"
+}
+
+side_effects: {
+    options = {
+        side_effects: true,
+    }
+    input: {
+        `42`;
+        `${console.log("foo")}`;
+        console.log`\nbar`;
+    }
+    expect: {
+        console.log("foo");
+        console.log`\nbar`;
+    }
+    expect_stdout: true
+    node_version: ">=4"
+}
+
+unsafe_side_effects: {
+    options = {
+        side_effects: true,
+        unsafe: true,
+    }
+    input: {
+        `42`;
+        `${console.log("foo")}`;
+        String.raw`\nbar`;
+    }
+    expect: {
+        console.log("foo");
+    }
+    expect_stdout: "foo"
+    node_version: ">=4"
+}