Add support for print()

Author: joehoyle

Diff for: README.md

@@ -28,15 +28,14 @@ The extension includes builds of libv8, via the [v8 crate](https://docs.rs/v8/la
 - [x] Memory / time limits
 - [x] Snapshop creating and loading
 - [x] Default global functions `var_dump`, `sleep`, `exit`
-- [ ] Default global function `print`
+- [x] Default global function `print`
 - [x] CommonJS / `require` support
 - [x] `setModuleLoader`
 - [ ] `setModuleNormaliser`
 - [ ] Subclassing V8Js
 - [x] Custom exceptions for `V8JsScriptException`, `V8JsMemoryLimitException` and `V8JsTimeLimitException`
 - [ ] Support for `V8JsScriptException::getJsLineNumber` etc.
 - [ ] Support for `FLAG_PROPAGATE_PHP_EXCEPTIONS`, `V8Js::FLAG_FORCE_ARRAY`
-- [ ] Throw correct exception subclasses
 - [ ] PHP INI settings `v8js.flags`
 - [x] `V8Js::V8_VERSION` constant
 

Diff for: src/lib.rs

@@ -5,7 +5,7 @@ use ext_php_rs::flags::DataType;
 use ext_php_rs::types::{ZendHashTable, ZendObject, Zval};
 use ext_php_rs::zend::{ClassEntry, ModuleEntry};
 use ext_php_rs::{exception::PhpException, zend::ce};
-use ext_php_rs::{info_table_end, info_table_row, info_table_start, prelude::*};
+use ext_php_rs::{info_table_end, info_table_row, info_table_start, prelude::*, php_print};
 
 use std::collections::HashMap;
 
@@ -166,7 +166,7 @@ impl V8Js {
         }
         runtime.add_global(global_name.as_str(), object);
         runtime.add_global_function("var_dump", php_callback_var_dump);
-        runtime.add_global_function("print", php_callback_var_dump);
+        runtime.add_global_function("print", php_callback_print);
         runtime.add_global_function("exit", php_callback_exit);
         runtime.add_global_function("sleep", php_callback_sleep);
         runtime.add_global_function("require", php_callback_require);
@@ -375,6 +375,14 @@ pub fn php_callback_var_dump(
     rv.set(result);
 }
 
+pub fn php_callback_print(
+    scope: &mut v8::HandleScope,
+    args: v8::FunctionCallbackArguments,
+    mut _rv: v8::ReturnValue,
+) {
+    php_print!("{}", args.get(0).to_rust_string_lossy(scope) );
+}
+
 pub fn php_callback_exit(
     scope: &mut v8::HandleScope,
     _args: v8::FunctionCallbackArguments,

Diff for: src/runtime.rs

@@ -256,19 +256,24 @@ impl JSRuntime {
             None => {
                 let exception = try_catch.exception().unwrap();
                 let exception_string = exception
-                    .to_string(try_catch)
-                    .unwrap()
-                    .to_rust_string_lossy(try_catch);
-                let message = try_catch.message().unwrap();
-                Err(Error::ScriptExecutionError(ScriptExecutionErrorData {
-                    file_name: message.get_script_resource_name(try_catch).unwrap().to_rust_string_lossy(try_catch),
-                    line_number: u64::try_from(message.get_line_number(try_catch).unwrap()).unwrap(),
-                    start_column: u64::try_from(message.get_start_column()).unwrap(),
-                    end_column: u64::try_from(message.get_end_column()).unwrap(),
-                    trace: "".into(), // todo,
-                    message: exception_string,
-                    source_line: message.get_source_line(try_catch).unwrap().to_rust_string_lossy(try_catch),
-                }))
+                    .to_string(try_catch);
+
+                match exception_string {
+                    Some(exception_string) => {
+                        let exception_string = exception_string.to_rust_string_lossy(try_catch);
+                        let message = try_catch.message().unwrap();
+                        Err(Error::ScriptExecutionError(ScriptExecutionErrorData {
+                            file_name: message.get_script_resource_name(try_catch).unwrap().to_rust_string_lossy(try_catch),
+                            line_number: u64::try_from(message.get_line_number(try_catch).unwrap()).unwrap(),
+                            start_column: u64::try_from(message.get_start_column()).unwrap(),
+                            end_column: u64::try_from(message.get_end_column()).unwrap(),
+                            trace: "".into(), // todo,
+                            message: exception_string,
+                            source_line: message.get_source_line(try_catch).unwrap().to_rust_string_lossy(try_catch),
+                        }))
+                    }
+                    None => Ok(None)
+                }
             }
         };
         result

Diff for: tests/global_functions.php

@@ -2,11 +2,11 @@
 
 // Todo: print needs implementing.
 
-// $v8js = new V8Js;
-// ob_start();
-// $v8js->executeString( 'print("hello")' );
-// $result = ob_get_clean();
-// assert( $result === "hello");
+$v8js = new V8Js;
+ob_start();
+$v8js->executeString( 'print("hello")' );
+$result = ob_get_clean();
+assert( $result === "hello");
 
 $v8js = new V8Js;
 ob_start();