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//! JavaScript language syntax implementation.
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use crate::{FieldNamePosition, GenericSyntax, LanguageSyntax, to_camel_case, to_pascal_case};
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/// JavaScript-specific code generation syntax.
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pub struct JavaScriptSyntax;
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impl LanguageSyntax for JavaScriptSyntax {
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fn field_name(&self, name: &str) -> String {
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to_camel_case(name)
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}
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fn path_expr(&self, base_var: &str, suffix: &str) -> String {
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// Convert base_var to camelCase for JavaScript
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let var_name = to_camel_case(base_var);
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format!("`${{{}}}{}`", var_name, suffix)
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}
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fn position_expr(&self, pos: &FieldNamePosition, base_var: &str) -> String {
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// Convert base_var to camelCase for JavaScript
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let var_name = to_camel_case(base_var);
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match pos {
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FieldNamePosition::Append(s) => {
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// Use helper _m(acc, suffix) to build metric name
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// e.g., _m(acc, "cap") produces: acc ? `${acc}_cap` : 'cap'
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if let Some(suffix) = s.strip_prefix('_') {
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format!("_m({}, '{}')", var_name, suffix)
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} else {
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format!("`${{{}}}{}`", var_name, s)
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}
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}
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FieldNamePosition::Prepend(s) => {
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// Handle empty acc case for prepend
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if let Some(prefix) = s.strip_suffix('_') {
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format!(
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"({} ? `{}${{{}}}` : '{}')",
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var_name, s, var_name, prefix
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)
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} else {
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format!("`{}${{{}}}`", s, var_name)
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}
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}
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FieldNamePosition::Identity => var_name,
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FieldNamePosition::SetBase(s) => format!("'{}'", s),
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}
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}
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fn constructor(&self, type_name: &str, path_expr: &str) -> String {
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format!("create{}(client, {})", type_name, path_expr)
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}
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fn field_init(&self, indent: &str, name: &str, _type_ann: &str, value: &str) -> String {
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// JavaScript uses object literal syntax; type is in JSDoc, not in assignment
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format!("{}{}: {},", indent, name, value)
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}
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fn generic_syntax(&self) -> GenericSyntax {
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GenericSyntax::JAVASCRIPT
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}
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fn struct_header(&self, name: &str, generic_params: &str, doc: Option<&str>) -> String {
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let mut result = String::new();
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if let Some(doc) = doc {
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result.push_str(&format!("/** {} */\n", doc));
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}
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// JavaScript uses factory functions that return object literals
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result.push_str(&format!(
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"function create{}{}(client, basePath) {{\n return {{\n",
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name, generic_params
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));
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result
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}
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fn struct_footer(&self) -> String {
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" };\n}\n".to_string()
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}
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fn constructor_header(&self, _params: &str) -> String {
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// JavaScript factory functions don't have a separate constructor
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String::new()
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}
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fn constructor_footer(&self) -> String {
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String::new()
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}
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fn field_declaration(&self, indent: &str, _name: &str, type_ann: &str) -> String {
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// JSDoc property declaration
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format!("{}/** @type {{{}}} */\n", indent, type_ann)
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}
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fn index_field_name(&self, index_name: &str) -> String {
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format!("by{}", to_pascal_case(index_name))
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}
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fn string_literal(&self, value: &str) -> String {
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format!("'{}'", value)
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}
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}
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