adding function start and end line number (#219)

Author: brettmc

phper-doc/doc/_06_module/_02_register_functions/index.md

@@ -115,7 +115,7 @@ The output of `php --re` for this function would look like:
     Function [ <internal:integration> function my_function ] {
 
       - Parameters [3] {
-        Parameter #0 [ <required> ?class_name $a_class ]
+        Parameter #0 [ <required> ?\MyNamespace\MyInterface $a_class ]
         Parameter #1 [ <optional> string $name = 'my_default' ]
         Parameter #2 [ <optional> bool $optional_bool = <default> ]
       }

phper/src/functions.rs

@@ -670,6 +670,28 @@ impl ZFunc {
         }
     }
 
+    /// Gets the start line number of the declaration of the currently
+    /// executing function.
+    pub fn get_line_start(&self) -> Option<u32> {
+        unsafe {
+            match u32::from(self.inner.type_) {
+                ZEND_USER_FUNCTION | ZEND_EVAL_CODE => Some(self.inner.op_array.line_start),
+                _ => None,
+            }
+        }
+    }
+
+    /// Gets the end line number of the declaration of the currently
+    /// executing function.
+    pub fn get_line_end(&self) -> Option<u32> {
+        unsafe {
+            match u32::from(self.inner.type_) {
+                ZEND_USER_FUNCTION | ZEND_EVAL_CODE => Some(self.inner.op_array.line_end),
+                _ => None,
+            }
+        }
+    }
+
     /// Get the function or method fully-qualified name.
     pub fn get_function_or_method_name(&self) -> ZString {
         unsafe {

phper/src/values.rs

@@ -133,7 +133,7 @@ impl ExecuteData {
     /// Gets the current opline line number if available. This represents the
     /// line number in the source code where the current operation is being
     /// executed.
-    pub fn get_lineno(&self) -> Option<u32> {
+    pub fn get_opline_lineno(&self) -> Option<u32> {
         unsafe {
             match u32::from((*self.inner.func).type_) {
                 ZEND_USER_FUNCTION | ZEND_EVAL_CODE => {