From d0e78c86d72de1ec5d1c49de5c5ee2fff9589efc Mon Sep 17 00:00:00 2001
From: Eric M <itsjusteza@gmail.com>
Date: Tue, 18 May 2021 13:09:19 +1000
Subject: Added support for scripts reporting multiple errors to
 ScriptTextEditor

Scripts can now report multiple errors to the scripting editors in the engine. UI elements were added to support multiple errors.
---
 core/object/script_language.h                      |  8 ++-
 editor/code_editor.cpp                             | 65 ++++++++++++------
 editor/code_editor.h                               |  9 ++-
 editor/plugins/script_text_editor.cpp              | 79 ++++++++++++++++++----
 editor/plugins/script_text_editor.h                |  3 +
 editor/plugins/shader_editor_plugin.cpp            |  4 +-
 .../include/pluginscript/godot_pluginscript.h      |  2 +-
 modules/gdnative/nativescript/nativescript.cpp     |  2 +-
 modules/gdnative/nativescript/nativescript.h       |  2 +-
 .../pluginscript/pluginscript_language.cpp         | 19 ++++--
 .../gdnative/pluginscript/pluginscript_language.h  |  2 +-
 modules/gdscript/gdscript.h                        |  2 +-
 modules/gdscript/gdscript_editor.cpp               | 20 ++++--
 modules/mono/csharp_script.h                       |  5 +-
 modules/visual_script/visual_script.cpp            |  2 +-
 modules/visual_script/visual_script.h              |  2 +-
 16 files changed, 163 insertions(+), 63 deletions(-)

diff --git a/core/object/script_language.h b/core/object/script_language.h
index a22e91870e..5d1f6a0deb 100644
--- a/core/object/script_language.h
+++ b/core/object/script_language.h
@@ -268,6 +268,12 @@ public:
 		String message;
 	};
 
+	struct ScriptError {
+		int line = -1;
+		int column = -1;
+		String message;
+	};
+
 	void get_core_type_words(List<String> *p_core_type_words) const;
 	virtual void get_reserved_words(List<String> *p_words) const = 0;
 	virtual bool is_control_flow_keyword(String p_string) const = 0;
@@ -276,7 +282,7 @@ public:
 	virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const = 0;
 	virtual void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script) {}
 	virtual bool is_using_templates() { return false; }
-	virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = nullptr, List<Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const = 0;
+	virtual bool validate(const String &p_script, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptError> *r_errors = nullptr, List<Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const = 0;
 	virtual String validate_path(const String &p_path) const { return ""; }
 	virtual Script *create_script() const = 0;
 	virtual bool has_named_classes() const = 0;
diff --git a/editor/code_editor.cpp b/editor/code_editor.cpp
index 807a45eb32..e0e9c6e2d1 100644
--- a/editor/code_editor.cpp
+++ b/editor/code_editor.cpp
@@ -1612,15 +1612,19 @@ void CodeTextEditor::validate_script() {
 	idle->start();
 }
 
-void CodeTextEditor::_warning_label_gui_input(const Ref<InputEvent> &p_event) {
-	Ref<InputEventMouseButton> mb = p_event;
-	if (mb.is_valid() && mb->is_pressed() && mb->get_button_index() == MOUSE_BUTTON_LEFT) {
-		_warning_button_pressed();
-	}
+void CodeTextEditor::_error_button_pressed() {
+	_set_show_errors_panel(!is_errors_panel_opened);
+	_set_show_warnings_panel(false);
 }
 
 void CodeTextEditor::_warning_button_pressed() {
 	_set_show_warnings_panel(!is_warnings_panel_opened);
+	_set_show_errors_panel(false);
+}
+
+void CodeTextEditor::_set_show_errors_panel(bool p_show) {
+	is_errors_panel_opened = p_show;
+	emit_signal("show_errors_panel", p_show);
 }
 
 void CodeTextEditor::_set_show_warnings_panel(bool p_show) {
@@ -1653,6 +1657,7 @@ void CodeTextEditor::_notification(int p_what) {
 			_update_font();
 		} break;
 		case NOTIFICATION_ENTER_TREE: {
+			error_button->set_icon(get_theme_icon("StatusError", "EditorIcons"));
 			warning_button->set_icon(get_theme_icon("NodeWarning", "EditorIcons"));
 			add_theme_constant_override("separation", 4 * EDSCALE);
 		} break;
@@ -1667,11 +1672,18 @@ void CodeTextEditor::_notification(int p_what) {
 	}
 }
 
-void CodeTextEditor::set_warning_nb(int p_warning_nb) {
-	warning_count_label->set_text(itos(p_warning_nb));
-	warning_count_label->set_visible(p_warning_nb > 0);
-	warning_button->set_visible(p_warning_nb > 0);
-	if (!p_warning_nb) {
+void CodeTextEditor::set_error_count(int p_error_count) {
+	error_button->set_text(itos(p_error_count));
+	error_button->set_visible(p_error_count > 0);
+	if (!p_error_count) {
+		_set_show_errors_panel(false);
+	}
+}
+
+void CodeTextEditor::set_warning_count(int p_warning_count) {
+	warning_button->set_text(itos(p_warning_count));
+	warning_button->set_visible(p_warning_count > 0);
+	if (!p_warning_count) {
 		_set_show_warnings_panel(false);
 	}
 }
@@ -1738,6 +1750,7 @@ void CodeTextEditor::_bind_methods() {
 
 	ADD_SIGNAL(MethodInfo("validate_script"));
 	ADD_SIGNAL(MethodInfo("load_theme_settings"));
+	ADD_SIGNAL(MethodInfo("show_errors_panel"));
 	ADD_SIGNAL(MethodInfo("show_warnings_panel"));
 }
 
@@ -1835,6 +1848,22 @@ CodeTextEditor::CodeTextEditor() {
 	error->set_mouse_filter(MOUSE_FILTER_STOP);
 	error->connect("gui_input", callable_mp(this, &CodeTextEditor::_error_pressed));
 
+	// Errors
+	error_button = memnew(Button);
+	error_button->set_flat(true);
+	status_bar->add_child(error_button);
+	error_button->set_v_size_flags(SIZE_EXPAND | SIZE_SHRINK_CENTER);
+	error_button->set_default_cursor_shape(CURSOR_POINTING_HAND);
+	error_button->connect("pressed", callable_mp(this, &CodeTextEditor::_error_button_pressed));
+	error_button->set_tooltip(TTR("Errors"));
+
+	error_button->add_theme_color_override("font_color", EditorNode::get_singleton()->get_gui_base()->get_theme_color("error_color", "Editor"));
+	error_button->add_theme_font_override("font", EditorNode::get_singleton()->get_gui_base()->get_theme_font("status_source", "EditorFonts"));
+	error_button->add_theme_font_size_override("font_size", EditorNode::get_singleton()->get_gui_base()->get_theme_font_size("status_source_size", "EditorFonts"));
+
+	is_errors_panel_opened = false;
+	set_error_count(0);
+
 	// Warnings
 	warning_button = memnew(Button);
 	warning_button->set_flat(true);
@@ -1844,20 +1873,12 @@ CodeTextEditor::CodeTextEditor() {
 	warning_button->connect("pressed", callable_mp(this, &CodeTextEditor::_warning_button_pressed));
 	warning_button->set_tooltip(TTR("Warnings"));
 
-	warning_count_label = memnew(Label);
-	status_bar->add_child(warning_count_label);
-	warning_count_label->set_v_size_flags(SIZE_EXPAND | SIZE_SHRINK_CENTER);
-	warning_count_label->set_align(Label::ALIGN_RIGHT);
-	warning_count_label->set_default_cursor_shape(CURSOR_POINTING_HAND);
-	warning_count_label->set_mouse_filter(MOUSE_FILTER_STOP);
-	warning_count_label->set_tooltip(TTR("Warnings"));
-	warning_count_label->add_theme_color_override("font_color", EditorNode::get_singleton()->get_gui_base()->get_theme_color("warning_color", "Editor"));
-	warning_count_label->add_theme_font_override("font", EditorNode::get_singleton()->get_gui_base()->get_theme_font("status_source", "EditorFonts"));
-	warning_count_label->add_theme_font_size_override("font_size", EditorNode::get_singleton()->get_gui_base()->get_theme_font_size("status_source_size", "EditorFonts"));
-	warning_count_label->connect("gui_input", callable_mp(this, &CodeTextEditor::_warning_label_gui_input));
+	warning_button->add_theme_color_override("font_color", EditorNode::get_singleton()->get_gui_base()->get_theme_color("warning_color", "Editor"));
+	warning_button->add_theme_font_override("font", EditorNode::get_singleton()->get_gui_base()->get_theme_font("status_source", "EditorFonts"));
+	warning_button->add_theme_font_size_override("font_size", EditorNode::get_singleton()->get_gui_base()->get_theme_font_size("status_source_size", "EditorFonts"));
 
 	is_warnings_panel_opened = false;
-	set_warning_nb(0);
+	set_warning_count(0);
 
 	// Line and column
 	line_and_col_txt = memnew(Label);
diff --git a/editor/code_editor.h b/editor/code_editor.h
index f368305e85..28b09e0a5d 100644
--- a/editor/code_editor.h
+++ b/editor/code_editor.h
@@ -145,8 +145,8 @@ class CodeTextEditor : public VBoxContainer {
 	HBoxContainer *status_bar;
 
 	Button *toggle_scripts_button;
+	Button *error_button;
 	Button *warning_button;
-	Label *warning_count_label;
 
 	Label *line_and_col_txt;
 
@@ -184,8 +184,9 @@ class CodeTextEditor : public VBoxContainer {
 	CodeTextEditorCodeCompleteFunc code_complete_func;
 	void *code_complete_ud;
 
-	void _warning_label_gui_input(const Ref<InputEvent> &p_event);
+	void _error_button_pressed();
 	void _warning_button_pressed();
+	void _set_show_errors_panel(bool p_show);
 	void _set_show_warnings_panel(bool p_show);
 	void _error_pressed(const Ref<InputEvent> &p_event);
 
@@ -205,6 +206,7 @@ protected:
 	static void _bind_methods();
 
 	bool is_warnings_panel_opened;
+	bool is_errors_panel_opened;
 
 public:
 	void trim_trailing_whitespace();
@@ -238,7 +240,8 @@ public:
 	Variant get_edit_state();
 	void set_edit_state(const Variant &p_state);
 
-	void set_warning_nb(int p_warning_nb);
+	void set_error_count(int p_error_count);
+	void set_warning_count(int p_warning_count);
 
 	void update_editor_settings();
 	void set_error(const String &p_error);
diff --git a/editor/plugins/script_text_editor.cpp b/editor/plugins/script_text_editor.cpp
index 3ec20ae68e..012011ef4a 100644
--- a/editor/plugins/script_text_editor.cpp
+++ b/editor/plugins/script_text_editor.cpp
@@ -109,13 +109,11 @@ ConnectionInfoDialog::ConnectionInfoDialog() {
 ////////////////////////////////////////////////////////////////////////////////
 
 Vector<String> ScriptTextEditor::get_functions() {
-	String errortxt;
-	int line = -1, col;
 	CodeEdit *te = code_editor->get_text_editor();
 	String text = te->get_text();
 	List<String> fnc;
 
-	if (script->get_language()->validate(text, line, col, errortxt, script->get_path(), &fnc)) {
+	if (script->get_language()->validate(text, script->get_path(), &fnc)) {
 		//if valid rewrite functions to latest
 		functions.clear();
 		for (List<String>::Element *E = fnc.front(); E; E = E->next()) {
@@ -265,6 +263,10 @@ void ScriptTextEditor::_set_theme_for_script() {
 	}
 }
 
+void ScriptTextEditor::_show_errors_panel(bool p_show) {
+	errors_panel->set_visible(p_show);
+}
+
 void ScriptTextEditor::_show_warnings_panel(bool p_show) {
 	warnings_panel->set_visible(p_show);
 }
@@ -279,6 +281,12 @@ void ScriptTextEditor::_warning_clicked(Variant p_line) {
 	}
 }
 
+void ScriptTextEditor::_error_clicked(Variant p_line) {
+	if (p_line.get_type() == Variant::INT) {
+		code_editor->get_text_editor()->cursor_set_line(p_line.operator int64_t());
+	}
+}
+
 void ScriptTextEditor::reload_text() {
 	ERR_FAIL_COND(script.is_null());
 
@@ -429,23 +437,21 @@ Ref<Texture2D> ScriptTextEditor::get_theme_icon() {
 }
 
 void ScriptTextEditor::_validate_script() {
-	String errortxt;
-	int line = -1, col;
 	CodeEdit *te = code_editor->get_text_editor();
 
 	String text = te->get_text();
 	List<String> fnc;
 	Set<int> safe_lines;
 	List<ScriptLanguage::Warning> warnings;
+	List<ScriptLanguage::ScriptError> errors;
 
-	if (!script->get_language()->validate(text, line, col, errortxt, script->get_path(), &fnc, &warnings, &safe_lines)) {
-		String error_text = "error(" + itos(line) + "," + itos(col) + "): " + errortxt;
+	if (!script->get_language()->validate(text, script->get_path(), &fnc, &errors, &warnings, &safe_lines)) {
+		String error_text = TTR("Error at ") + "(" + itos(errors[0].line) + "," + itos(errors[0].column) + "): " + errors[0].message;
 		code_editor->set_error(error_text);
-		code_editor->set_error_pos(line - 1, col - 1);
+		code_editor->set_error_pos(errors[0].line - 1, errors[0].column - 1);
 		script_is_valid = false;
 	} else {
 		code_editor->set_error("");
-		line = -1;
 		if (!script->is_tool()) {
 			script->set_source_code(text);
 			script->update_exports();
@@ -487,7 +493,8 @@ void ScriptTextEditor::_validate_script() {
 		}
 	}
 
-	code_editor->set_warning_nb(warning_nb);
+	code_editor->set_error_count(errors.size());
+	code_editor->set_warning_count(warning_nb);
 
 	// Add script warnings.
 	warnings_panel->push_table(3);
@@ -521,11 +528,40 @@ void ScriptTextEditor::_validate_script() {
 	}
 	warnings_panel->pop(); // Table.
 
-	line--;
+	errors_panel->clear();
+	errors_panel->push_table(2);
+	for (List<ScriptLanguage::ScriptError>::Element *E = errors.front(); E; E = E->next()) {
+		ScriptLanguage::ScriptError err = E->get();
+
+		errors_panel->push_cell();
+		errors_panel->push_meta(err.line - 1);
+		errors_panel->push_color(warnings_panel->get_theme_color("error_color", "Editor"));
+		errors_panel->add_text(TTR("Line") + " " + itos(err.line) + ":");
+		errors_panel->pop(); // Color.
+		errors_panel->pop(); // Meta goto.
+		errors_panel->pop(); // Cell.
+
+		errors_panel->push_cell();
+		errors_panel->add_text(err.message);
+		errors_panel->pop(); // Cell.
+	}
+	errors_panel->pop(); // Table
+
 	bool highlight_safe = EDITOR_DEF("text_editor/highlighting/highlight_type_safe_lines", true);
 	bool last_is_safe = false;
 	for (int i = 0; i < te->get_line_count(); i++) {
-		te->set_line_background_color(i, (line == i) ? marked_line_color : Color(0, 0, 0, 0));
+		if (errors.is_empty()) {
+			te->set_line_background_color(i, Color(0, 0, 0, 0));
+		} else {
+			for (List<ScriptLanguage::ScriptError>::Element *E = errors.front(); E; E = E->next()) {
+				bool error_line = i == E->get().line - 1;
+				te->set_line_background_color(i, error_line ? marked_line_color : Color(0, 0, 0, 0));
+				if (error_line) {
+					break;
+				}
+			}
+		}
+
 		if (highlight_safe) {
 			if (safe_lines.has(i + 1)) {
 				te->set_line_gutter_item_color(i, line_number_gutter, safe_line_number_color);
@@ -537,7 +573,7 @@ void ScriptTextEditor::_validate_script() {
 				last_is_safe = false;
 			}
 		} else {
-			te->set_line_gutter_item_color(line, 1, default_line_number_color);
+			te->set_line_gutter_item_color(i, 1, default_line_number_color);
 		}
 	}
 
@@ -1675,6 +1711,7 @@ void ScriptTextEditor::_enable_code_editor() {
 	editor_box->set_v_size_flags(SIZE_EXPAND_FILL);
 
 	editor_box->add_child(code_editor);
+	code_editor->connect("show_errors_panel", callable_mp(this, &ScriptTextEditor::_show_errors_panel));
 	code_editor->connect("show_warnings_panel", callable_mp(this, &ScriptTextEditor::_show_warnings_panel));
 	code_editor->connect("validate_script", callable_mp(this, &ScriptTextEditor::_validate_script));
 	code_editor->connect("load_theme_settings", callable_mp(this, &ScriptTextEditor::_load_theme_settings));
@@ -1695,6 +1732,13 @@ void ScriptTextEditor::_enable_code_editor() {
 			"normal_font_size", EditorNode::get_singleton()->get_gui_base()->get_theme_font_size("main_size", "EditorFonts"));
 	warnings_panel->connect("meta_clicked", callable_mp(this, &ScriptTextEditor::_warning_clicked));
 
+	editor_box->add_child(errors_panel);
+	errors_panel->add_theme_font_override(
+			"normal_font", EditorNode::get_singleton()->get_gui_base()->get_theme_font("main", "EditorFonts"));
+	errors_panel->add_theme_font_size_override(
+			"normal_font_size", EditorNode::get_singleton()->get_gui_base()->get_theme_font_size("main_size", "EditorFonts"));
+	errors_panel->connect("meta_clicked", callable_mp(this, &ScriptTextEditor::_error_clicked));
+
 	add_child(context_menu);
 	context_menu->connect("id_pressed", callable_mp(this, &ScriptTextEditor::_edit_option));
 
@@ -1826,6 +1870,14 @@ ScriptTextEditor::ScriptTextEditor() {
 	warnings_panel->set_focus_mode(FOCUS_CLICK);
 	warnings_panel->hide();
 
+	errors_panel = memnew(RichTextLabel);
+	errors_panel->set_custom_minimum_size(Size2(0, 100 * EDSCALE));
+	errors_panel->set_h_size_flags(SIZE_EXPAND_FILL);
+	errors_panel->set_meta_underline(true);
+	errors_panel->set_selection_enabled(true);
+	errors_panel->set_focus_mode(FOCUS_CLICK);
+	errors_panel->hide();
+
 	update_settings();
 
 	code_editor->get_text_editor()->set_code_hint_draw_below(EditorSettings::get_singleton()->get("text_editor/completion/put_callhint_tooltip_below_current_line"));
@@ -1886,6 +1938,7 @@ ScriptTextEditor::~ScriptTextEditor() {
 	if (!editor_enabled) {
 		memdelete(code_editor);
 		memdelete(warnings_panel);
+		memdelete(errors_panel);
 		memdelete(context_menu);
 		memdelete(color_panel);
 		memdelete(edit_hb);
diff --git a/editor/plugins/script_text_editor.h b/editor/plugins/script_text_editor.h
index 7bb961bf19..8a8e9aa737 100644
--- a/editor/plugins/script_text_editor.h
+++ b/editor/plugins/script_text_editor.h
@@ -55,6 +55,7 @@ class ScriptTextEditor : public ScriptEditorBase {
 
 	CodeTextEditor *code_editor = nullptr;
 	RichTextLabel *warnings_panel = nullptr;
+	RichTextLabel *errors_panel = nullptr;
 
 	Ref<Script> script;
 	bool script_is_valid = false;
@@ -161,7 +162,9 @@ protected:
 
 	void _load_theme_settings();
 	void _set_theme_for_script();
+	void _show_errors_panel(bool p_show);
 	void _show_warnings_panel(bool p_show);
+	void _error_clicked(Variant p_line);
 	void _warning_clicked(Variant p_line);
 
 	void _notification(int p_what);
diff --git a/editor/plugins/shader_editor_plugin.cpp b/editor/plugins/shader_editor_plugin.cpp
index e4a5a3796e..22d598d180 100644
--- a/editor/plugins/shader_editor_plugin.cpp
+++ b/editor/plugins/shader_editor_plugin.cpp
@@ -240,7 +240,7 @@ void ShaderTextEditor::_validate_script() {
 		warnings.sort_custom<WarningsComparator>();
 		_update_warning_panel();
 	} else {
-		set_warning_nb(0);
+		set_warning_count(0);
 	}
 	emit_signal("script_changed");
 }
@@ -280,7 +280,7 @@ void ShaderTextEditor::_update_warning_panel() {
 	}
 	warnings_panel->pop(); // Table.
 
-	set_warning_nb(warning_count);
+	set_warning_count(warning_count);
 }
 
 void ShaderTextEditor::_bind_methods() {
diff --git a/modules/gdnative/include/pluginscript/godot_pluginscript.h b/modules/gdnative/include/pluginscript/godot_pluginscript.h
index 34ed4f097d..02ee4066d0 100644
--- a/modules/gdnative/include/pluginscript/godot_pluginscript.h
+++ b/modules/gdnative/include/pluginscript/godot_pluginscript.h
@@ -132,7 +132,7 @@ typedef struct {
 	godot_bool can_inherit_from_file;
 
 	godot_string (*get_template_source_code)(godot_pluginscript_language_data *p_data, const godot_string *p_class_name, const godot_string *p_base_class_name);
-	godot_bool (*validate)(godot_pluginscript_language_data *p_data, const godot_string *p_script, int *r_line_error, int *r_col_error, godot_string *r_test_error, const godot_string *p_path, godot_packed_string_array *r_functions);
+	godot_bool (*validate)(godot_pluginscript_language_data *p_data, const godot_string *p_script, const godot_string *p_path, godot_packed_string_array *r_functions, godot_array *r_errors); // errors = Array of Dictionary with "line", "column", "message" keys
 	int (*find_function)(godot_pluginscript_language_data *p_data, const godot_string *p_function, const godot_string *p_code); // Can be nullptr
 	godot_string (*make_function)(godot_pluginscript_language_data *p_data, const godot_string *p_class, const godot_string *p_name, const godot_packed_string_array *p_args);
 	godot_error (*complete_code)(godot_pluginscript_language_data *p_data, const godot_string *p_code, const godot_string *p_path, godot_object *p_owner, godot_array *r_options, godot_bool *r_force, godot_string *r_call_hint);
diff --git a/modules/gdnative/nativescript/nativescript.cpp b/modules/gdnative/nativescript/nativescript.cpp
index 6c2d038654..0930302eb2 100644
--- a/modules/gdnative/nativescript/nativescript.cpp
+++ b/modules/gdnative/nativescript/nativescript.cpp
@@ -1035,7 +1035,7 @@ Ref<Script> NativeScriptLanguage::get_template(const String &p_class_name, const
 	return Ref<NativeScript>(s);
 }
 
-bool NativeScriptLanguage::validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path, List<String> *r_functions, List<ScriptLanguage::Warning> *r_warnings, Set<int> *r_safe_lines) const {
+bool NativeScriptLanguage::validate(const String &p_script, const String &p_path, List<String> *r_functions, List<ScriptLanguage::ScriptError> *r_errors, List<ScriptLanguage::Warning> *r_warnings, Set<int> *r_safe_lines) const {
 	return true;
 }
 
diff --git a/modules/gdnative/nativescript/nativescript.h b/modules/gdnative/nativescript/nativescript.h
index 1756321281..c53dc063b8 100644
--- a/modules/gdnative/nativescript/nativescript.h
+++ b/modules/gdnative/nativescript/nativescript.h
@@ -317,7 +317,7 @@ public:
 	virtual void get_comment_delimiters(List<String> *p_delimiters) const;
 	virtual void get_string_delimiters(List<String> *p_delimiters) const;
 	virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
-	virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path, List<String> *r_functions, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
+	virtual bool validate(const String &p_script, const String &p_path, List<String> *r_functions, List<ScriptLanguage::ScriptError> *r_errors = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
 	virtual Script *create_script() const;
 	virtual bool has_named_classes() const;
 	virtual bool supports_builtin_mode() const;
diff --git a/modules/gdnative/pluginscript/pluginscript_language.cpp b/modules/gdnative/pluginscript/pluginscript_language.cpp
index 0291ae560b..79aba342c9 100644
--- a/modules/gdnative/pluginscript/pluginscript_language.cpp
+++ b/modules/gdnative/pluginscript/pluginscript_language.cpp
@@ -112,20 +112,29 @@ Ref<Script> PluginScriptLanguage::get_template(const String &p_class_name, const
 	return script;
 }
 
-bool PluginScriptLanguage::validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path, List<String> *r_functions, List<ScriptLanguage::Warning> *r_warnings, Set<int> *r_safe_lines) const {
+bool PluginScriptLanguage::validate(const String &p_script, const String &p_path, List<String> *r_functions, List<ScriptLanguage::ScriptError> *r_errors, List<ScriptLanguage::Warning> *r_warnings, Set<int> *r_safe_lines) const {
 	PackedStringArray functions;
+	Array errors;
 	if (_desc.validate) {
 		bool ret = _desc.validate(
 				_data,
 				(godot_string *)&p_script,
-				&r_line_error,
-				&r_col_error,
-				(godot_string *)&r_test_error,
 				(godot_string *)&p_path,
-				(godot_packed_string_array *)&functions);
+				(godot_packed_string_array *)&functions,
+				(godot_array *)&errors);
 		for (int i = 0; i < functions.size(); i++) {
 			r_functions->push_back(functions[i]);
 		}
+		if (r_errors) {
+			for (int i = 0; i < errors.size(); i++) {
+				Dictionary error = errors[i];
+				ScriptLanguage::ScriptError e;
+				e.line = error["line"];
+				e.column = error["column"];
+				e.message = error["message"];
+				r_errors->push_back(e);
+			}
+		}
 		return ret;
 	}
 	return true;
diff --git a/modules/gdnative/pluginscript/pluginscript_language.h b/modules/gdnative/pluginscript/pluginscript_language.h
index 957bf355ca..26ab4a95e3 100644
--- a/modules/gdnative/pluginscript/pluginscript_language.h
+++ b/modules/gdnative/pluginscript/pluginscript_language.h
@@ -75,7 +75,7 @@ public:
 	virtual void get_comment_delimiters(List<String> *p_delimiters) const;
 	virtual void get_string_delimiters(List<String> *p_delimiters) const;
 	virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
-	virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
+	virtual bool validate(const String &p_script, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptLanguage::ScriptError> *r_errors = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
 	virtual Script *create_script() const;
 	virtual bool has_named_classes() const;
 	virtual bool supports_builtin_mode() const;
diff --git a/modules/gdscript/gdscript.h b/modules/gdscript/gdscript.h
index 602553bb1a..42019ae501 100644
--- a/modules/gdscript/gdscript.h
+++ b/modules/gdscript/gdscript.h
@@ -447,7 +447,7 @@ public:
 	virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
 	virtual bool is_using_templates();
 	virtual void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script);
-	virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
+	virtual bool validate(const String &p_script, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptLanguage::ScriptError> *r_errors = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
 	virtual Script *create_script() const;
 	virtual bool has_named_classes() const;
 	virtual bool supports_builtin_mode() const;
diff --git a/modules/gdscript/gdscript_editor.cpp b/modules/gdscript/gdscript_editor.cpp
index 18b7810919..0e0b32b2a6 100644
--- a/modules/gdscript/gdscript_editor.cpp
+++ b/modules/gdscript/gdscript_editor.cpp
@@ -131,7 +131,7 @@ static void get_function_names_recursively(const GDScriptParser::ClassNode *p_cl
 	}
 }
 
-bool GDScriptLanguage::validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path, List<String> *r_functions, List<ScriptLanguage::Warning> *r_warnings, Set<int> *r_safe_lines) const {
+bool GDScriptLanguage::validate(const String &p_script, const String &p_path, List<String> *r_functions, List<ScriptLanguage::ScriptError> *r_errors, List<ScriptLanguage::Warning> *r_warnings, Set<int> *r_safe_lines) const {
 	GDScriptParser parser;
 	GDScriptAnalyzer analyzer(&parser);
 
@@ -156,10 +156,16 @@ bool GDScriptLanguage::validate(const String &p_script, int &r_line_error, int &
 	}
 #endif
 	if (err) {
-		GDScriptParser::ParserError parse_error = parser.get_errors().front()->get();
-		r_line_error = parse_error.line;
-		r_col_error = parse_error.column;
-		r_test_error = parse_error.message;
+		if (r_errors) {
+			for (const List<GDScriptParser::ParserError>::Element *E = parser.get_errors().front(); E; E = E->next()) {
+				const GDScriptParser::ParserError &pe = E->get();
+				ScriptLanguage::ScriptError e;
+				e.line = pe.line;
+				e.column = pe.column;
+				e.message = pe.message;
+				r_errors->push_back(e);
+			}
+		}
 		return false;
 	} else {
 		const GDScriptParser::ClassNode *cl = parser.get_tree();
@@ -2378,7 +2384,7 @@ static void _find_call_arguments(GDScriptParser::CompletionContext &p_context, c
 	r_forced = r_result.size() > 0;
 }
 
-Error GDScriptLanguage::complete_code(const String &p_code, const String &p_path, Object *p_owner, List<ScriptCodeCompletionOption> *r_options, bool &r_forced, String &r_call_hint) {
+::Error GDScriptLanguage::complete_code(const String &p_code, const String &p_path, Object *p_owner, List<ScriptCodeCompletionOption> *r_options, bool &r_forced, String &r_call_hint) {
 	const String quote_style = EDITOR_DEF("text_editor/completion/use_single_quotes", false) ? "'" : "\"";
 
 	GDScriptParser parser;
@@ -2929,7 +2935,7 @@ static Error _lookup_symbol_from_base(const GDScriptParser::DataType &p_base, co
 	return ERR_CANT_RESOLVE;
 }
 
-Error GDScriptLanguage::lookup_code(const String &p_code, const String &p_symbol, const String &p_path, Object *p_owner, LookupResult &r_result) {
+::Error GDScriptLanguage::lookup_code(const String &p_code, const String &p_symbol, const String &p_path, Object *p_owner, LookupResult &r_result) {
 	//before parsing, try the usual stuff
 	if (ClassDB::class_exists(p_symbol)) {
 		r_result.type = ScriptLanguage::LookupResult::RESULT_CLASS;
diff --git a/modules/mono/csharp_script.h b/modules/mono/csharp_script.h
index 965e882c5b..2f1ee6b123 100644
--- a/modules/mono/csharp_script.h
+++ b/modules/mono/csharp_script.h
@@ -455,9 +455,8 @@ public:
 	Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const override;
 	bool is_using_templates() override;
 	void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script) override;
-	/* TODO */ bool validate(const String &p_script, int &r_line_error, int &r_col_error,
-			String &r_test_error, const String &p_path, List<String> *r_functions,
-			List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const override {
+	/* TODO */ bool validate(const String &p_script, const String &p_path, List<String> *r_functions,
+			List<ScriptLanguage::ScriptError> *r_errors = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const override {
 		return true;
 	}
 	String validate_path(const String &p_path) const override;
diff --git a/modules/visual_script/visual_script.cpp b/modules/visual_script/visual_script.cpp
index 7badb1b717..1047a4d3a3 100644
--- a/modules/visual_script/visual_script.cpp
+++ b/modules/visual_script/visual_script.cpp
@@ -2276,7 +2276,7 @@ void VisualScriptLanguage::make_template(const String &p_class_name, const Strin
 	script->set_instance_base_type(p_base_class_name);
 }
 
-bool VisualScriptLanguage::validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path, List<String> *r_functions, List<ScriptLanguage::Warning> *r_warnings, Set<int> *r_safe_lines) const {
+bool VisualScriptLanguage::validate(const String &p_script, const String &p_path, List<String> *r_functions, List<ScriptLanguage::ScriptError> *r_errors, List<ScriptLanguage::Warning> *r_warnings, Set<int> *r_safe_lines) const {
 	return false;
 }
 
diff --git a/modules/visual_script/visual_script.h b/modules/visual_script/visual_script.h
index 438ec99a56..5e848dc6c7 100644
--- a/modules/visual_script/visual_script.h
+++ b/modules/visual_script/visual_script.h
@@ -571,7 +571,7 @@ public:
 	virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
 	virtual bool is_using_templates();
 	virtual void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script);
-	virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
+	virtual bool validate(const String &p_script, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptLanguage::ScriptError> *r_errors = nullptr, List<ScriptLanguage::Warning> *r_warnings = nullptr, Set<int> *r_safe_lines = nullptr) const;
 	virtual Script *create_script() const;
 	virtual bool has_named_classes() const;
 	virtual bool supports_builtin_mode() const;
-- 
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