--- parser3/src/classes/table.C	2001/03/27 17:12:22	1.35
+++ parser3/src/classes/table.C	2001/03/30 05:51:12	1.40
@@ -5,7 +5,7 @@
 
 	Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
 
-	$Id: table.C,v 1.35 2001/03/27 17:12:22 paf Exp $
+	$Id: table.C,v 1.40 2001/03/30 05:51:12 paf Exp $
 */
 
 #include "pa_config_includes.h"
@@ -34,14 +34,14 @@ static void set_or_load(
 	r.fail_if_junction_(is_load, *vdata_or_filename, 
 		method_name, is_load?"file name must not be junction":"body must be junction");
 
-	// data or file_name
+	// data or table_name
 	char *data;
 	if(is_load) {
 		// forcing untaint language
-		String lfile_name(pool);
-		lfile_name.append(vdata_or_filename->as_string(), String::UL_FILE_NAME, true);
+		String ltable_name(pool);
+		ltable_name.append(vdata_or_filename->as_string(), String::UL_FILE_NAME, true);
 		// loading text
-		data=file_read_text(pool, r.absolute(lfile_name));
+		data=file_read_text(pool, r.absolute(ltable_name));
 	} else {
 		// suggesting untaint language
 		Temp_lang temp_lang(r, String::UL_TABLE);
@@ -63,7 +63,7 @@ static void set_or_load(
 		if(char *row_chars=getrow(&data)) 
 			do {
 				String *name=new(pool) String(pool);
-				name->APPEND(lsplit(&row_chars, '\t'), 0, file, line++);
+				name->APPEND_CLEAN(lsplit(&row_chars, '\t'), 0, file, line++);
 				*columns+=name;
 			} while(row_chars);
 	}
@@ -77,7 +77,7 @@ static void set_or_load(
 		Array *row=new(pool) Array(pool);
 		while(char *cell_chars=lsplit(&row_chars, '\t')) {
 			String *cell=new(pool) String(pool);
-			cell->APPEND(cell_chars, 0, file, line);
+			cell->APPEND_CLEAN(cell_chars, 0, file, line);
 			*row+=cell;
 		}
 		line++;
@@ -99,15 +99,15 @@ static void _load(Request& r, const Stri
 
 static void _save(Request& r, const String& method_name, Array *params) {
 	Pool& pool=r.pool();
-	Value *vfile_name=static_cast<Value *>(params->get(params->size()-1));
+	Value *vtable_name=static_cast<Value *>(params->get(params->size()-1));
 	// forcing
 	// ^save[this body type]
-	r.fail_if_junction_(true, *vfile_name, 
+	r.fail_if_junction_(true, *vtable_name, 
 		method_name, "file name must not be junction");
 
 	// forcing untaint language
-	String lfile_name(pool);
-	lfile_name.append(vfile_name->as_string(),
+	String ltable_name(pool);
+	ltable_name.append(vtable_name->as_string(),
 		String::UL_FILE_NAME, true);
 
 	Table& table=static_cast<VTable *>(r.self)->table();
@@ -148,32 +148,28 @@ static void _save(Request& r, const Stri
 	}
 
 	// write
-	file_write(pool, r.absolute(lfile_name), sdata.cstr(), sdata.size(), true);
+	file_write(pool, r.absolute(ltable_name), sdata.cstr(), sdata.size(), true);
 }
 
-static void _count(Request& r, const String&, Array *) {
+static void _count(Request& r, const String&method_name, Array *) {
 	Pool& pool=r.pool();
 	Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size());
 	r.write_no_lang(value);
 }
 
-static void _line(Request& r, const String&, Array *) {
+static void _line(Request& r, const String& method_name, Array *) {
 	Pool& pool=r.pool();
-	Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().get_current());
+	Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().current());
 	r.write_no_lang(value);
 }
 
-static void _offset(Request& r, const String&, Array *params) {
+static void _offset(Request& r, const String& method_name, Array *params) {
 	Pool& pool=r.pool();
 	Table& table=static_cast<VTable *>(r.self)->table();
-	if(params->size()) {
-		if(int size=table.size()) {
-			int offset=
-				(int)r.process(*static_cast<Value *>(params->get(0))).as_double();
-			table.set_current((table.get_current()+offset+size)%size);
-		}
-	} else {
-		Value& value=*new(pool) VInt(pool, table.get_current());
+	if(params->size())
+		table.shift((int)r.process(*static_cast<Value *>(params->get(0))).as_double());
+	else {
+		Value& value=*new(pool) VInt(pool, table.current());
 		r.write_no_lang(value);
 	}
 }
@@ -188,6 +184,7 @@ static void _menu(Request& r, const Stri
 
 	Table& table=static_cast<VTable *>(r.self)->table();
 	bool need_delim=false;
+	int saved_current=table.current();
 	for(int row=0; row<table.size(); row++) {
 		table.set_current(row);
 
@@ -200,9 +197,10 @@ static void _menu(Request& r, const Stri
 		}
 		r.write_pass_lang(processed_body);
 	}
+	table.set_current(saved_current);
 }
 
-static void _empty(Request& r, const String&, Array *params) {
+static void _empty(Request& r, const String& method_name, Array *params) {
 	Table& table=static_cast<VTable *>(r.self)->table();
 	if(table.size()==0) {
 		Value& value=r.process(*static_cast<Value *>(params->get(0)));
@@ -229,7 +227,7 @@ static void store_column_item_to_hash(Ar
 		value=new(*ri.pool) VUnknown(*ri.pool);
 	ri.hash->put(column_name, value);
 }
-static void _record(Request& r, const String&, Array *params) {
+static void _record(Request& r, const String& method_name, Array *params) {
 	Table& table=static_cast<VTable *>(r.self)->table();
 	if(const Array *columns=table.columns()) {
 		Pool& pool=r.pool();
@@ -314,44 +312,96 @@ static void _sort(Request& r, const Stri
 	table.set_current(0);
 }
 
+static void _locate(Request& r, const String& method_name, Array *params) {
+	VTable& vtable=*static_cast<VTable *>(r.self);
+	Table& table=vtable.table();
+	vtable.last_locate_was_successful=table.locate(
+		static_cast<Value *>(params->get(0))->as_string(),
+		static_cast<Value *>(params->get(1))->as_string());
+}
+
+static void _found(Request& r, const String& method_name, Array *params) {
+	if(static_cast<VTable *>(r.self)->last_locate_was_successful) {
+		Value& then_code=*static_cast<Value *>(params->get(0));
+		// forcing ^found{this param type}
+		r.fail_if_junction_(false, then_code, 
+			method_name, "found-parameter must be junction");
+		r.write_pass_lang(r.process(then_code));
+	} else if(params->size()==2) {
+		Value& else_code=*static_cast<Value *>(params->get(1));
+		// forcing ^found{this param type}
+		r.fail_if_junction_(false, else_code, 
+			method_name, "not found-parameter must be junction");
+		r.write_pass_lang(r.process(else_code));
+	}
+}
+
+static void _flip(Request& r, const String& method_name, Array *params) {
+	Pool& pool=r.pool();
+	VTable& vtable=*static_cast<VTable *>(r.self);
+
+	Table& old_table=*vtable.get_table();
+	Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/);
+	if(old_table.size())
+		if(int old_cols=old_table.at(0).size()) 
+			for(int column=0; column<old_cols; column++) {
+				Array& new_row=*new(pool) Array(pool, old_table.size());
+				for(int i=0; i<old_table.size(); i++) {
+					const Array& old_row=old_table.at(i);
+					new_row+=column<old_row.size()?old_row.get(column):empty_string;
+				}
+				new_table+=&new_row;
+			}
+
+	vtable.set_table(new_table);
+}
+
 // initialize
 
 void initialize_table_class(Pool& pool, VStateless_class& vclass) {
 	// ^table.set{data}
 	// ^table.set[nameless]{data}
-	vclass.add_native_method("set", _set, 1, 2);
+	vclass.add_native_method("set", Method::CT_DYNAMIC, _set, 1, 2);
 
 	// ^table.load[file]  
 	// ^table.load[nameless;file]
-	vclass.add_native_method("load", _load, 1, 2);
+	vclass.add_native_method("load", Method::CT_DYNAMIC, _load, 1, 2);
 
 	// ^table.save[file]  
 	// ^table.save[nameless;file]
-	vclass.add_native_method("save", _save, 1, 2);
+	vclass.add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
 
 	// ^table.count[]
-	vclass.add_native_method("count", _count, 0, 0);
+	vclass.add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
 
 	// ^table.line[]
-	vclass.add_native_method("line", _line, 0, 0);
+	vclass.add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
 
 	// ^table.offset[]  
 	// ^table.offset[offset]
-	vclass.add_native_method("offset", _offset, 0, 1);
+	vclass.add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 1);
 
 	// ^table.menu{code}  
 	// ^table.menu{code}[delim]
-	vclass.add_native_method("menu", _menu, 1, 2);
+	vclass.add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
 
 	// ^table.empty{code-when-empty}  
 	// ^table.empty{code-when-empty}{code-when-not}
-	vclass.add_native_method("empty", _empty, 1, 2);
+	vclass.add_native_method("empty", Method::CT_DYNAMIC, _empty, 1, 2);
 
 	// ^table.record[]
-	vclass.add_native_method("record", _record, 0, 0);
+	vclass.add_native_method("record", Method::CT_DYNAMIC, _record, 0, 0);
 
 	// ^table.sort{string-key-maker} ^table.sort{string-key-maker}[asc|desc]
 	// ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[asc|desc]
-	vclass.add_native_method("sort", _sort, 1, 2);
+	vclass.add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
 
-}	
+	// ^table.locate[field;value]
+	vclass.add_native_method("locate", Method::CT_DYNAMIC, _locate, 2, 2);
+	// ^table.found{when-found}
+	// ^table.found{when-found}{when-not-found}
+	vclass.add_native_method("found", Method::CT_DYNAMIC, _found, 1, 2);
+
+	// ^table.flip[]
+	vclass.add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
+}