Rust: archiving + skeleton def translator

misc/codegen/templates/rust_classes.mustache

@@ -0,0 +1,54 @@
+// generated by {{generator}}
+
+use crate::trap::{TrapLabel, TrapEntry, quoted};
+use std::io::Write;
+
+{{#classes}}
+#[derive(Debug)]
+pub struct {{name}} {
+    pub key: Option<String>,
+    {{#fields}}
+    pub {{field_name}}: {{type}},
+    {{/fields}}
+}
+
+impl TrapEntry for {{name}} {
+    type Label = TrapLabel;
+
+    fn prefix() -> &'static str { "{{name}}_" }
+
+    fn key(&self) -> Option<&str> { self.key.as_ref().map(String::as_str) }
+
+    fn emit<W: Write>(&self, id: &Self::Label, out: &mut W) -> std::io::Result<()> {
+        write!(out, "{{table_name}}({id}{{#single_fields}}, {}{{/single_fields}})\n"{{#single_fields}}, {{#emitter}}self.{{field_name}}{{/emitter}}{{/single_fields}})?;
+        {{#fields}}
+        {{#is_predicate}}
+        if self.{{field_name}} {
+            write!(out, "{{table_name}}({id})\n")?;
+        }
+        {{/is_predicate}}
+        {{#is_optional}}
+        {{^is_repeated}}
+        if let Some(ref v) = &self.{{field_name}} {
+            write!(out, "{{table_name}}({id}, {})\n", {{#emitter}}v{{/emitter}})?;
+        }
+        {{/is_repeated}}
+        {{/is_optional}}
+        {{#is_repeated}}
+        for (i, &ref v) in self.{{field_name}}.iter().enumerate() {
+            {{^is_optional}}
+            write!(out, "{{table_name}}({id}, {{^is_unordered}}{}, {{/is_unordered}}{})\n", {{^is_unordered}}i, {{/is_unordered}}{{#emitter}}v{{/emitter}})?;
+            {{/is_optional}}
+            {{#is_optional}}
+            if let Some(ref vv) = &v {
+                write!(out, "{{table_name}}({id}, {{^is_unordered}}{}, {{/is_unordered}}{})\n", {{^is_unordered}}i, {{/is_unordered}}{{#emitter}}vv{{/emitter}})?;
+            }
+            {{/is_optional}}
+        }
+        {{/is_repeated}}
+        {{/fields}}
+        Ok(())
+    }
+}
+
+{{/classes}}