fix(stubs): Constants' values are now properly transferred #186

Author: kakserpom

src/builders/class.rs

@@ -17,7 +17,8 @@ use crate::{
     zend_fastcall,
 };
 
-type ConstantEntry = (String, Box<dyn FnOnce() -> Result<Zval>>, DocComments);
+/// A constant entry: (name, value_closure, docs, stub_value)
+type ConstantEntry = (String, Box<dyn FnOnce() -> Result<Zval>>, DocComments, String);
 
 /// Builder for registering a class in PHP.
 #[must_use]
@@ -137,8 +138,11 @@ impl ClassBuilder {
         value: impl IntoZval + 'static,
         docs: DocComments,
     ) -> Result<Self> {
+        // Convert to Zval first to get stub value
+        let zval = value.into_zval(true)?;
+        let stub = crate::convert::zval_to_stub(&zval);
         self.constants
-            .push((name.into(), Box::new(|| value.into_zval(true)), docs));
+            .push((name.into(), Box::new(|| Ok(zval)), docs, stub));
         Ok(self)
     }
 
@@ -163,9 +167,10 @@ impl ClassBuilder {
         value: &'static dyn IntoZvalDyn,
         docs: DocComments,
     ) -> Result<Self> {
+        let stub = value.stub_value();
         let value = Rc::new(value);
         self.constants
-            .push((name.into(), Box::new(move || value.as_zval(true)), docs));
+            .push((name.into(), Box::new(move || value.as_zval(true)), docs, stub));
         Ok(self)
     }
 
@@ -368,7 +373,7 @@ impl ClassBuilder {
             }
         }
 
-        for (name, value, _) in self.constants {
+        for (name, value, _, _) in self.constants {
             let value = Box::into_raw(Box::new(value()?));
             unsafe {
                 zend_declare_class_constant(

src/constant.rs

@@ -13,6 +13,13 @@ use crate::ffi::{
 
 /// Implemented on types which can be registered as a constant in PHP.
 pub trait IntoConst: Debug {
+    /// Returns the PHP stub representation of this constant value.
+    ///
+    /// This is used when generating PHP stub files for IDE autocompletion.
+    /// The returned string should be a valid PHP literal (e.g., `"hello"`,
+    /// `42`, `true`).
+    fn stub_value(&self) -> String;
+
     /// Registers a global module constant in PHP, with the value as the content
     /// of self. This function _must_ be called in the module startup
     /// function, which is called after the module is initialized. The
@@ -89,6 +96,10 @@ pub trait IntoConst: Debug {
 }
 
 impl IntoConst for String {
+    fn stub_value(&self) -> String {
+        self.as_str().stub_value()
+    }
+
     fn register_constant_flags(
         &self,
         name: &str,
@@ -101,6 +112,17 @@ impl IntoConst for String {
 }
 
 impl IntoConst for &str {
+    fn stub_value(&self) -> String {
+        // Escape special characters for PHP string literal
+        let escaped = self
+            .replace('\\', "\\\\")
+            .replace('\'', "\\'")
+            .replace('\n', "\\n")
+            .replace('\r', "\\r")
+            .replace('\t', "\\t");
+        format!("'{escaped}'")
+    }
+
     fn register_constant_flags(
         &self,
         name: &str,
@@ -133,6 +155,10 @@ impl IntoConst for &str {
 }
 
 impl IntoConst for bool {
+    fn stub_value(&self) -> String {
+        if *self { "true" } else { "false" }.to_string()
+    }
+
     fn register_constant_flags(
         &self,
         name: &str,
@@ -169,6 +195,10 @@ impl IntoConst for bool {
 macro_rules! into_const_num {
     ($type: ty, $fn: expr) => {
         impl IntoConst for $type {
+            fn stub_value(&self) -> String {
+                self.to_string()
+            }
+
             fn register_constant_flags(
                 &self,
                 name: &str,

src/convert.rs

@@ -253,6 +253,85 @@ pub trait IntoZvalDyn {
 
     /// Returns the PHP type of the type.
     fn get_type(&self) -> DataType;
+
+    /// Returns the PHP stub representation of this value.
+    ///
+    /// This is used when generating PHP stub files for IDE autocompletion.
+    /// The returned string should be a valid PHP literal.
+    fn stub_value(&self) -> String {
+        // Default implementation - convert to zval and format
+        match self.as_zval(false) {
+            Ok(zval) => zval_to_stub(&zval),
+            Err(_) => "null".to_string(),
+        }
+    }
+}
+
+/// Converts a Zval to its PHP stub representation.
+#[must_use]
+#[allow(clippy::match_same_arms)]
+pub fn zval_to_stub(zval: &Zval) -> String {
+    use crate::flags::DataType;
+
+    match zval.get_type() {
+        DataType::Null | DataType::Undef => "null".to_string(),
+        DataType::True => "true".to_string(),
+        DataType::False => "false".to_string(),
+        DataType::Long => zval.long().map_or_else(|| "null".to_string(), |v| v.to_string()),
+        DataType::Double => zval.double().map_or_else(|| "null".to_string(), |v| v.to_string()),
+        DataType::String => {
+            if let Some(s) = zval.str() {
+                let escaped = s
+                    .replace('\\', "\\\\")
+                    .replace('\'', "\\'")
+                    .replace('\n', "\\n")
+                    .replace('\r', "\\r")
+                    .replace('\t', "\\t");
+                format!("'{escaped}'")
+            } else {
+                "null".to_string()
+            }
+        }
+        DataType::Array => {
+            #[allow(clippy::explicit_iter_loop)]
+            if let Some(arr) = zval.array() {
+                // Check if array has sequential numeric keys starting from 0
+                let is_sequential = arr.iter().enumerate().all(|(i, (key, _))| {
+                    matches!(key, crate::types::ArrayKey::Long(idx) if idx == i as i64)
+                });
+
+                let mut parts = Vec::new();
+                for (key, val) in arr.iter() {
+                    let val_str = zval_to_stub(val);
+                    if is_sequential {
+                        parts.push(val_str);
+                    } else {
+                        match key {
+                            crate::types::ArrayKey::Long(idx) => {
+                                parts.push(format!("{idx} => {val_str}"));
+                            }
+                            crate::types::ArrayKey::String(key) => {
+                                let key_escaped = key
+                                    .replace('\\', "\\\\")
+                                    .replace('\'', "\\'");
+                                parts.push(format!("'{key_escaped}' => {val_str}"));
+                            }
+                            crate::types::ArrayKey::Str(key) => {
+                                let key_escaped = key
+                                    .replace('\\', "\\\\")
+                                    .replace('\'', "\\'");
+                                parts.push(format!("'{key_escaped}' => {val_str}"));
+                            }
+                        }
+                    }
+                }
+                format!("[{}]", parts.join(", "))
+            } else {
+                "[]".to_string()
+            }
+        }
+        _ => "null".to_string(),
+    }
 }
 
 impl<T: IntoZval + Clone> IntoZvalDyn for T {

src/describe/mod.rs

@@ -270,8 +270,11 @@ impl From<ClassBuilder> for Class {
             constants: val
                 .constants
                 .into_iter()
-                .map(|(name, _, docs)| (name, docs))
-                .map(Constant::from)
+                .map(|(name, _, docs, stub)| Constant {
+                    name: name.into(),
+                    value: Option::Some(stub.into()),
+                    docs: docs.into(),
+                })
                 .collect::<StdVec<_>>()
                 .into(),
             flags,
@@ -385,9 +388,9 @@ impl From<(String, PropertyFlags, DocComments)> for Property {
         let static_ = flags.contains(PropertyFlags::Static);
         let vis = Visibility::from(flags);
         // TODO: Implement ty #376
-        let ty = abi::Option::None;
+        let ty = Option::None;
         // TODO: Implement default #376
-        let default = abi::Option::<abi::RString>::None;
+        let default = Option::<RString>::None;
         // TODO: Implement nullable #376
         let nullable = false;
         let docs = docs.into();
@@ -552,18 +555,18 @@ impl From<(String, DocComments)> for Constant {
         let (name, docs) = val;
         Constant {
             name: name.into(),
-            value: abi::Option::None,
+            value: Option::None,
             docs: docs.into(),
         }
     }
 }
 
 impl From<(String, Box<dyn IntoConst + Send>, DocComments)> for Constant {
     fn from(val: (String, Box<dyn IntoConst + Send + 'static>, DocComments)) -> Self {
-        let (name, _, docs) = val;
+        let (name, value, docs) = val;
         Constant {
             name: name.into(),
-            value: abi::Option::None,
+            value: Option::Some(value.stub_value().into()),
             docs: docs.into(),
         }
     }