diff --git a/tools/aconfig/src/codegen_cpp.rs b/tools/aconfig/src/codegen_cpp.rs
new file mode 100644
index 0000000..cb266f1
--- /dev/null
+++ b/tools/aconfig/src/codegen_cpp.rs
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+use anyhow::Result;
+use serde::Serialize;
+use tinytemplate::TinyTemplate;
+
+use crate::aconfig::{FlagState, Permission};
+use crate::cache::{Cache, Item};
+use crate::commands::OutputFile;
+
+pub fn generate_cpp_code(cache: &Cache) -> Result<OutputFile> {
+    let class_elements: Vec<ClassElement> = cache.iter().map(create_class_element).collect();
+    let readwrite = class_elements.iter().any(|item| item.readwrite);
+    let namespace = cache.namespace().to_lowercase();
+    let context = Context { namespace: namespace.clone(), readwrite, class_elements };
+    let mut template = TinyTemplate::new();
+    template.add_template("cpp_code_gen", include_str!("../templates/cpp.template"))?;
+    let contents = template.render("cpp_code_gen", &context)?;
+    let path = ["aconfig", &(namespace + ".h")].iter().collect();
+    Ok(OutputFile { contents: contents.into(), path })
+}
+
+#[derive(Serialize)]
+struct Context {
+    pub namespace: String,
+    pub readwrite: bool,
+    pub class_elements: Vec<ClassElement>,
+}
+
+#[derive(Serialize)]
+struct ClassElement {
+    pub readwrite: bool,
+    pub default_value: String,
+    pub flag_name: String,
+}
+
+fn create_class_element(item: &Item) -> ClassElement {
+    ClassElement {
+        readwrite: item.permission == Permission::ReadWrite,
+        default_value: if item.state == FlagState::Enabled {
+            "true".to_string()
+        } else {
+            "false".to_string()
+        },
+        flag_name: item.name.clone(),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::aconfig::{FlagDeclaration, FlagState, FlagValue, Permission};
+    use crate::commands::Source;
+
+    #[test]
+    fn test_cpp_codegen_build_time_flag_only() {
+        let namespace = "my_namespace";
+        let mut cache = Cache::new(namespace.to_string()).unwrap();
+        cache
+            .add_flag_declaration(
+                Source::File("aconfig_one.txt".to_string()),
+                FlagDeclaration {
+                    name: "my_flag_one".to_string(),
+                    description: "buildtime disable".to_string(),
+                },
+            )
+            .unwrap();
+        cache
+            .add_flag_value(
+                Source::Memory,
+                FlagValue {
+                    namespace: namespace.to_string(),
+                    name: "my_flag_one".to_string(),
+                    state: FlagState::Disabled,
+                    permission: Permission::ReadOnly,
+                },
+            )
+            .unwrap();
+        cache
+            .add_flag_declaration(
+                Source::File("aconfig_two.txt".to_string()),
+                FlagDeclaration {
+                    name: "my_flag_two".to_string(),
+                    description: "buildtime enable".to_string(),
+                },
+            )
+            .unwrap();
+        cache
+            .add_flag_value(
+                Source::Memory,
+                FlagValue {
+                    namespace: namespace.to_string(),
+                    name: "my_flag_two".to_string(),
+                    state: FlagState::Enabled,
+                    permission: Permission::ReadOnly,
+                },
+            )
+            .unwrap();
+        let expect_content = r#"#ifndef my_namespace_HEADER_H
+        #define my_namespace_HEADER_H
+        #include "my_namespace.h"
+
+        namespace my_namespace {
+
+            class my_flag_one {
+                public:
+                    virtual const bool value() {
+                        return false;
+                    }
+            }
+
+            class my_flag_two {
+                public:
+                    virtual const bool value() {
+                        return true;
+                    }
+            }
+
+        }
+        #endif
+        "#;
+        let file = generate_cpp_code(&cache).unwrap();
+        assert_eq!("aconfig/my_namespace.h", file.path.to_str().unwrap());
+        assert_eq!(
+            expect_content.replace(' ', ""),
+            String::from_utf8(file.contents).unwrap().replace(' ', "")
+        );
+    }
+
+    #[test]
+    fn test_cpp_codegen_runtime_flag() {
+        let namespace = "my_namespace";
+        let mut cache = Cache::new(namespace.to_string()).unwrap();
+        cache
+            .add_flag_declaration(
+                Source::File("aconfig_one.txt".to_string()),
+                FlagDeclaration {
+                    name: "my_flag_one".to_string(),
+                    description: "buildtime disable".to_string(),
+                },
+            )
+            .unwrap();
+        cache
+            .add_flag_declaration(
+                Source::File("aconfig_two.txt".to_string()),
+                FlagDeclaration {
+                    name: "my_flag_two".to_string(),
+                    description: "runtime enable".to_string(),
+                },
+            )
+            .unwrap();
+        cache
+            .add_flag_value(
+                Source::Memory,
+                FlagValue {
+                    namespace: namespace.to_string(),
+                    name: "my_flag_two".to_string(),
+                    state: FlagState::Enabled,
+                    permission: Permission::ReadWrite,
+                },
+            )
+            .unwrap();
+        let expect_content = r#"#ifndef my_namespace_HEADER_H
+        #define my_namespace_HEADER_H
+        #include "my_namespace.h"
+
+        #include <server_configurable_flags/get_flags.h>
+        using namespace server_configurable_flags;
+
+        namespace my_namespace {
+
+            class my_flag_one {
+                public:
+                    virtual const bool value() {
+                        return GetServerConfigurableFlag(
+                            "my_namespace",
+                            "my_flag_one",
+                            "false") == "true";
+                    }
+            }
+
+            class my_flag_two {
+                public:
+                    virtual const bool value() {
+                        return GetServerConfigurableFlag(
+                            "my_namespace",
+                            "my_flag_two",
+                            "true") == "true";
+                    }
+            }
+
+        }
+        #endif
+        "#;
+        let file = generate_cpp_code(&cache).unwrap();
+        assert_eq!("aconfig/my_namespace.h", file.path.to_str().unwrap());
+        assert_eq!(
+            expect_content.replace(' ', ""),
+            String::from_utf8(file.contents).unwrap().replace(' ', "")
+        );
+    }
+}