1 files changed, 48 insertions, 0 deletions
diff --git a/src/template.rs b/src/template.rs
new file mode 100644
index 0000000..d6f5c81
--- /dev/null
+++ b/src/template.rs
@@ -0,0 +1,48 @@
+
+use std::collections::HashMap;
+use serde_json::Value;
+use super::compwrapper::CompWrapper;
+
+pub struct Template {
+	pub arguments: Vec<String>,
+	pub components: Vec<(String, HashMap<String, CompParam>)>
+}
+
+impl Template {
+	pub fn instantiate(&self, args: Vec<Value>, kwargs: HashMap<String, Value>) -> Option<Vec<CompWrapper>>{
+		let mut components: Vec<CompWrapper> = Vec::new();
+		for (compname, compparams) in &self.components {
+			let mut compargs: HashMap<&str, &Value> = HashMap::new();
+			for (name, param) in compparams {
+				match param {
+					CompParam::Constant(val) => {compargs.insert(name.as_str(), &val); Some(())},
+					CompParam::Argument(argname) => {
+						if let Some(argval) = kwargs.get(argname.as_str()) {
+							compargs.insert(name.as_str(), argval);
+							Some(())
+						} else if let Some(idx) = self.arguments.iter().position(|x| x == name){
+							if idx < args.len() {
+								compargs.insert(name.as_str(), &args[idx]);
+								Some(())
+							} else {
+								println!("positional argument out of range");
+								None
+							}
+						} else {
+							println!("can't find parameter value, compname: {}, name: {}, argname: {}", compname, name, argname);
+							None
+						}
+					}
+				}?;
+			}
+			components.push(CompWrapper::load_component(compname.as_str(), compargs)?);
+		}
+		Some(components)
+	}
+}
+
+
+pub enum CompParam {
+	Constant(Value),
+	Argument(String)
+}