Add first iteration of blog example

.idea/misc.xml

@@ -34,6 +34,7 @@
     <cargoProject FILE="$PROJECT_DIR$/twelve_days_of_christmas/Cargo.toml" />
     <cargoProject FILE="$PROJECT_DIR$/trait_objects/Cargo.toml" />
     <cargoProject FILE="$PROJECT_DIR$/gui/Cargo.toml" />
+    <cargoProject FILE="$PROJECT_DIR$/blog/Cargo.toml" />
   </component>
   <component name="ComposerJsonPluginSettings">
     <unboundedVersionInspectionSettings>

.idea/rust.iml

@@ -137,9 +137,14 @@
       <sourceFolder url="file://$MODULE_DIR$/gui/examples" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/gui/tests" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/gui/benches" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/blog/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/blog/examples" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/blog/tests" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/blog/benches" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/add/add-one/target" />
       <excludeFolder url="file://$MODULE_DIR$/add/adder/target" />
       <excludeFolder url="file://$MODULE_DIR$/adder/target" />
+      <excludeFolder url="file://$MODULE_DIR$/blog/target" />
       <excludeFolder url="file://$MODULE_DIR$/branches/target" />
       <excludeFolder url="file://$MODULE_DIR$/closures/target" />
       <excludeFolder url="file://$MODULE_DIR$/ctof/target" />

.idea/workspace.xml

@@ -13,7 +13,48 @@
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
   <component name="FileEditorManager">
-    <leaf />
+    <leaf>
+      <file pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/blog/src/main.rs">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="224">
+              <caret line="14" lean-forward="true" selection-start-line="14" selection-end-line="14" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/blog/src/lib.rs">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="624">
+              <caret line="39" column="5" lean-forward="true" selection-start-line="39" selection-start-column="5" selection-end-line="39" selection-end-column="5" />
+              <folding>
+                <element signature="e#276#277#0" expanded="true" />
+                <element signature="e#303#304#0" expanded="true" />
+                <element signature="e#352#353#0" expanded="true" />
+                <element signature="e#377#378#0" expanded="true" />
+                <element signature="e#879#880#0" expanded="true" />
+                <element signature="e#896#897#0" expanded="true" />
+                <element signature="e#701#702#0" expanded="true" />
+                <element signature="e#726#727#0" expanded="true" />
+                <element signature="e#983#984#0" expanded="true" />
+                <element signature="e#1002#1003#0" expanded="true" />
+                <element signature="e#856#857#0" expanded="true" />
+                <element signature="e#875#876#0" expanded="true" />
+                <element signature="e#1196#1197#0" expanded="true" />
+                <element signature="e#1221#1222#0" expanded="true" />
+                <element signature="e#1347#1348#0" expanded="true" />
+                <element signature="e#1366#1367#0" expanded="true" />
+                <element signature="e#1423#1424#0" expanded="true" />
+                <element signature="e#1442#1443#0" expanded="true" />
+                <element signature="e#1599#1600#0" expanded="true" />
+                <element signature="e#1615#1616#0" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+    </leaf>
   </component>
   <component name="FileTemplateManagerImpl">
     <option name="RECENT_TEMPLATES">
@@ -42,8 +83,6 @@
   <component name="IdeDocumentHistory">
     <option name="CHANGED_PATHS">
       <list>
-        <option value="$PROJECT_DIR$/scope/src/main.rs" />
-        <option value="$PROJECT_DIR$/references/src/main.rs" />
         <option value="$PROJECT_DIR$/slices/src/main.rs" />
         <option value="$PROJECT_DIR$/structs/src/main.rs" />
         <option value="$PROJECT_DIR$/rectangles/src/main.rs" />
@@ -93,6 +132,8 @@
         <option value="$PROJECT_DIR$/trait_objects/Cargo.toml" />
         <option value="$PROJECT_DIR$/gui/src/main.rs" />
         <option value="$PROJECT_DIR$/gui/src/lib.rs" />
+        <option value="$PROJECT_DIR$/blog/src/main.rs" />
+        <option value="$PROJECT_DIR$/blog/src/lib.rs" />
       </list>
     </option>
   </component>
@@ -123,6 +164,17 @@
               <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
               <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
             </path>
+            <path>
+              <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
+              <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
+              <item name="blog" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+            </path>
+            <path>
+              <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
+              <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
+              <item name="blog" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+              <item name="src" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+            </path>
             <path>
               <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
               <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
@@ -165,7 +217,7 @@
   </component>
   <component name="PropertiesComponent">
     <property name="JavaScriptWeakerCompletionTypeGuess" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1549480480153" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1549482664512" />
     <property name="javascript.nodejs.core.library.configured.version" value="7.1.0" />
     <property name="js.eslint.eslintPackage" value="$USER_HOME$/.yarn-config/global/node_modules/.bin/eslint" />
     <property name="js.eslint.nodeInterpreter" value="project" />
@@ -193,7 +245,7 @@
       </list>
     </option>
   </component>
-  <component name="RunManager" selected="Cargo Command.Run gui">
+  <component name="RunManager" selected="Cargo Command.Run blog">
     <configuration name="&lt;template&gt;" type="TestNG" default="true" selected="false">
       <option name="MAIN_CLASS_NAME" />
       <option name="VM_PARAMETERS" value="-ea" />
@@ -212,6 +264,16 @@
         <option name="Make" enabled="true" />
       </method>
     </configuration>
+    <configuration name="Run blog" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
+      <option name="channel" value="DEFAULT" />
+      <option name="command" value="run --package blog --bin blog" />
+      <option name="allFeatures" value="false" />
+      <option name="nocapture" value="false" />
+      <option name="backtrace" value="SHORT" />
+      <option name="workingDirectory" value="file://$PROJECT_DIR$/blog" />
+      <envs />
+      <method v="2" />
+    </configuration>
     <configuration name="Run gui" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
       <option name="channel" value="DEFAULT" />
       <option name="command" value="run --package gui --bin gui" />
@@ -232,16 +294,6 @@
       <envs />
       <method v="2" />
     </configuration>
-    <configuration name="Run threads" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
-      <option name="channel" value="DEFAULT" />
-      <option name="command" value="run --package threads --bin threads" />
-      <option name="allFeatures" value="false" />
-      <option name="nocapture" value="false" />
-      <option name="backtrace" value="SHORT" />
-      <option name="workingDirectory" value="file://$PROJECT_DIR$/threads" />
-      <envs />
-      <method v="2" />
-    </configuration>
     <configuration name="Run twelve_days_of_christmas" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
       <option name="channel" value="DEFAULT" />
       <option name="command" value="run --package twelve_days_of_christmas --bin twelve_days_of_christmas" />
@@ -271,11 +323,11 @@
     </configuration>
     <recent_temporary>
       <list>
+        <item itemvalue="Cargo Command.Run blog" />
         <item itemvalue="Cargo Command.Run gui" />
         <item itemvalue="Cargo Command.Test lib::tests" />
         <item itemvalue="Cargo Command.Run twelve_days_of_christmas" />
         <item itemvalue="Cargo Command.Run mutex" />
-        <item itemvalue="Cargo Command.Run threads" />
       </list>
     </recent_temporary>
   </component>
@@ -313,9 +365,10 @@
   </component>
   <component name="ToolWindowManager">
     <frame x="1680" y="-410" width="1050" height="1657" extended-state="6" />
+    <editor active="true" />
     <layout>
-      <window_info active="true" content_ui="combo" id="Project" order="0" sideWeight="0.4960707" visible="true" weight="0.26141885" />
+      <window_info content_ui="combo" id="Project" order="0" sideWeight="0.49586776" visible="true" weight="0.26141885" />
-      <window_info id="Structure" order="1" sideWeight="0.50392926" side_tool="true" visible="true" weight="0.26141885" />
+      <window_info id="Structure" order="1" sideWeight="0.5041322" side_tool="true" visible="true" weight="0.26141885" />
       <window_info id="Image Layers" order="2" />
       <window_info id="Designer" order="3" />
       <window_info id="Capture Tool" order="4" />
@@ -323,7 +376,7 @@
       <window_info id="Cargo" order="6" sideWeight="0.49791494" weight="0.3286119" />
       <window_info anchor="bottom" id="Message" order="0" />
       <window_info anchor="bottom" id="Find" order="1" weight="0.32979318" />
-      <window_info anchor="bottom" id="Run" order="2" weight="0.29696578" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.29696578" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
@@ -331,7 +384,7 @@
       <window_info anchor="bottom" id="Docker" order="7" show_stripe_button="false" />
       <window_info anchor="bottom" id="Version Control" order="8" />
       <window_info anchor="bottom" id="Inspection Results" order="9" weight="0.32979318" />
-      <window_info anchor="bottom" id="Terminal" order="10" visible="true" weight="0.3428018" />
+      <window_info anchor="bottom" id="Terminal" order="10" weight="0.3428018" />
       <window_info anchor="bottom" id="Event Log" order="11" side_tool="true" />
       <window_info anchor="right" id="Commander" order="0" weight="0.4" />
       <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
@@ -345,24 +398,6 @@
     <option name="version" value="1" />
   </component>
   <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/ftoc/src/main.rs">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="352">
-          <caret line="22" lean-forward="true" selection-start-line="22" selection-end-line="22" />
-          <folding>
-            <element signature="e#456#457#0" expanded="true" />
-            <element signature="e#488#489#0" expanded="true" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/loops/src/main.rs">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="944">
-          <caret line="59" lean-forward="true" selection-start-line="59" selection-end-line="59" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/references/src/main.rs">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="368">
@@ -785,5 +820,41 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/blog/src/lib.rs">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="624">
+          <caret line="39" column="5" lean-forward="true" selection-start-line="39" selection-start-column="5" selection-end-line="39" selection-end-column="5" />
+          <folding>
+            <element signature="e#276#277#0" expanded="true" />
+            <element signature="e#303#304#0" expanded="true" />
+            <element signature="e#352#353#0" expanded="true" />
+            <element signature="e#377#378#0" expanded="true" />
+            <element signature="e#879#880#0" expanded="true" />
+            <element signature="e#896#897#0" expanded="true" />
+            <element signature="e#701#702#0" expanded="true" />
+            <element signature="e#726#727#0" expanded="true" />
+            <element signature="e#983#984#0" expanded="true" />
+            <element signature="e#1002#1003#0" expanded="true" />
+            <element signature="e#856#857#0" expanded="true" />
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+            <element signature="e#1366#1367#0" expanded="true" />
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+            <element signature="e#1599#1600#0" expanded="true" />
+            <element signature="e#1615#1616#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/blog/src/main.rs">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="224">
+          <caret line="14" lean-forward="true" selection-start-line="14" selection-end-line="14" />
+        </state>
+      </provider>
+    </entry>
   </component>
 </project>

blog/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "blog"
+version = "0.1.0"
+authors = ["Timothy Warren <twarren@nabancard.com>"]
+edition = "2018"
+
+[dependencies]

blog/src/lib.rs

@@ -0,0 +1,81 @@
+pub struct Post {
+    state: Option<Box<dyn State>>,
+    content: String,
+}
+
+impl Post {
+    pub fn new() -> Post {
+        Post {
+            state: Some(Box::new(Draft {})),
+            content: String::new(),
+        }
+    }
+
+    pub fn add_text(&mut self, text: &str) {
+        self.content.push_str(text);
+    }
+
+    pub fn content(&self) -> &str {
+        self.state.as_ref().unwrap().content(&self)
+    }
+
+    pub fn request_review(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.request_review())
+        }
+    }
+
+    pub fn approve(&mut self) {
+        if let Some(s) = self.state.take() {
+            self.state = Some(s.approve())
+        }
+    }
+}
+
+trait State {
+    fn request_review(self: Box<Self>) -> Box<dyn State>;
+    fn approve(self: Box<Self>) -> Box<dyn State>;
+    fn content<'a>(&self, post: &'a Post) -> &'a str {
+        ""
+    }
+}
+
+struct Draft {}
+
+impl State for Draft {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        Box::new(PendingReview {})
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+}
+
+struct PendingReview {}
+
+impl State for PendingReview {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        Box::new(Published {})
+    }
+}
+
+struct Published {}
+
+impl State for Published {
+    fn request_review(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    fn approve(self: Box<Self>) -> Box<dyn State> {
+        self
+    }
+
+    fn content<'a>(&self, post: &'a Post) -> &'a str {
+        &post.content
+    }
+}

blog/src/main.rs

@@ -0,0 +1,14 @@
+use blog::Post;
+
+fn main() {
+    let mut post = Post::new();
+
+    post.add_text("I ate a salad for lunch today");
+    assert_eq!("", post.content());
+
+    post.request_review();
+    assert_eq!("", post.content());
+
+    post.approve();
+    assert_eq!("I ate a salad for lunch today", post.content());
+}