mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

	Commit message (Expand)	Author	Age	Files	Lines
*	2605	Kartik K. Agaram	2016-01-26	1	-1/+1
*	2611	Kartik K. Agaram	2015-11-29	1	-0/+85

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Mu - 082scenario_screen.cc</title> <meta name="Generator" content="Vim/7.4"> <meta name="plugin-version" content="vim7.4_v2"> <meta name="syntax" content="cpp"> <meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> <meta name="colorscheme" content="minimal"> <style type="text/css">  </style> <script type='text/javascript'>  </script> </head> <body> <pre id='vimCodeElement'> //: Clean syntax to manipulate and check the screen in scenarios. //: Instructions 'assume-screen' and 'screen-should-contain' implicitly create //: a variable called 'screen' that is accessible inside other 'run' //: instructions in the scenario. 'screen-should-contain' can check unicode //: characters in the fake screen :(scenarios run_mu_scenario) :(scenario screen_in_scenario) scenario screen-in-scenario [ assume-screen 5/width, 3/height run [ 1:character <- copy 97/a screen:address:screen <- print screen:address:screen, 1:character/a ] screen-should-contain [ # 01234 .a . . . . . ] ] :(scenario screen_in_scenario_unicode) scenario screen-in-scenario-unicode-color [ assume-screen 5/width, 3/height run [ 1:character <- copy 955/greek-small-lambda screen:address:screen <- print screen:address:screen, 1:character/lambda, 1/red 2:character <- copy 97/a screen:address:screen <- print screen:address:screen, 2:character/a ] screen-should-contain [ # 01234 .λa . . . . . ] ] :(scenario screen_in_scenario_color) # screen-should-contain can check unicode characters in the fake screen scenario screen-in-scenario-color [ assume-screen 5/width, 3/height run [ 1:character <- copy 955/greek-small-lambda screen:address:screen <- print screen:address:screen, 1:character/lambda, 1/red 2:character <- copy 97/a screen:address:screen <- print screen:address:screen, 2:character/a, 7/white ] # screen-should-contain shows everything screen-should-contain [ # 01234 .λa . . . . . ] # screen-should-contain-in-color filters out everything except the given # color, all you see is the 'a' in white. screen-should-contain-in-color 7/white, [ # 01234 . a . . . . . ] # ..and the λ in red. screen-should-contain-in-color 1/red, [ # 01234 .λ . . . . . ] ] :(scenario screen_in_scenario_error) % Scenario_testing_scenario = true; % Hide_errors = true; scenario screen-in-scenario-error [ assume-screen 5/width, 3/height run [ 1:character <- copy 97/a screen:address:screen <- print screen:address:screen, 1:character/a ] screen-should-contain [ # 01234 .b . . . . . ] ] +error: expected screen location (0, 0) to contain 98 ('b') instead of 97 ('a') :(scenario screen_in_scenario_color_error) % Scenario_testing_scenario = true; % Hide_errors = true; # screen-should-contain can check unicode characters in the fake screen scenario screen-in-scenario-color [ assume-screen 5/width, 3/height run [ 1:character <- copy 97/a screen:address:screen <- print screen:address:screen, 1:character/a, 1/red ] screen-should-contain-in-color 2/green, [ # 01234 .a . . . . . ] ] +error: expected screen location (0, 0) to be in color 2 instead of 1 //: allow naming just for 'screen' :(before "End is_special_name Cases") if (s == "screen") return true; :(scenarios run) :(scenario convert_names_does_not_fail_when_mixing_special_names_and_numeric_locations) % Scenario_testing_scenario = true; def main [ screen:number <- copy 1:number ] -error: mixing variable names and numeric addresses in main $error: 0 :(scenarios run_mu_scenario) :(before "End Globals") // Scenarios may not define default-space, so they should fit within the // initial area of memory reserved for tests. We'll put the predefined // variables available to them at the end of that region. const int Max_variables_in_scenarios = Reserved_for_tests-100; int Next_predefined_global_for_scenarios = Max_variables_in_scenarios; :(before "End Setup") assert(Next_predefined_global_for_scenarios < Reserved_for_tests); :(after "transform_all()" following "case RUN:") // There's a restriction on the number of variables 'run' can use, so that // it can avoid colliding with the dynamic allocator in case it doesn't // initialize a default-space. assert(Name[tmp_recipe.at(0)][""] < Max_variables_in_scenarios); :(before "End Globals") // Scenario Globals. const int SCREEN = Next_predefined_global_for_scenarios++; // End Scenario Globals. :(before "End Special Scenario Variable Names(r)") Name[r]["screen"] = SCREEN; :(before "End Rewrite Instruction(curr, recipe result)") // rewrite `assume-screen width, height` to // `screen:address:screen <- new-fake-screen width, height` if (curr.name == "assume-screen") { curr.name = "new-fake-screen"; assert(curr.products.empty()); curr.products.push_back(reagent("screen:address:screen")); curr.products.at(0).set_value(SCREEN); } //: screen-should-contain is a regular instruction :(before "End Primitive Recipe Declarations") SCREEN_SHOULD_CONTAIN, :(before "End Primitive Recipe Numbers") put(Recipe_ordinal, "screen-should-contain", SCREEN_SHOULD_CONTAIN); :(before "End Primitive Recipe Checks") case SCREEN_SHOULD_CONTAIN: { break; } :(before "End Primitive Recipe Implementations") case SCREEN_SHOULD_CONTAIN: { if (!Passed) break; assert(scalar(ingredients.at(0))); check_screen(current_instruction().ingredients.at(0).name, -1); break; } :(before "End Primitive Recipe Declarations") SCREEN_SHOULD_CONTAIN_IN_COLOR, :(before "End Primitive Recipe Numbers") put(Recipe_ordinal, "screen-should-contain-in-color", SCREEN_SHOULD_CONTAIN_IN_COLOR); :(before "End Primitive Recipe Checks") case SCREEN_SHOULD_CONTAIN_IN_COLOR: { break; } :(before "End Primitive Recipe Implementations") case SCREEN_SHOULD_CONTAIN_IN_COLOR: { if (!Passed) break; assert(scalar(ingredients.at(0))); assert(scalar(ingredients.at(1))); check_screen(current_instruction().ingredients.at(1).name, ingredients.at(0).at(0)); break; } :(before "End Types") // scan an array of characters in a unicode-aware, bounds-checked manner struct raw_string_stream { int index; const int max; const char* buf; raw_string_stream(const string&); uint32_t get(); // unicode codepoint uint32_t peek(); // unicode codepoint bool at_end() const; void skip_whitespace_and_comments(); }; :(code) void check_screen(const string& expected_contents, const int color) { assert(!current_call().default_space); // not supported int screen_location = get_or_insert(Memory, SCREEN)+/*skip refcount*/1; int data_offset = find_element_name(get(Type_ordinal, "screen"), "data", ""); assert(data_offset >= 0); int screen_data_location = screen_location+data_offset; // type: address:array:character int screen_data_start = get_or_insert(Memory, screen_data_location) + /*skip refcount*/1; // type: array:character int width_offset = find_element_name(get(Type_ordinal, "screen"), "num-columns", ""); int screen_width = get_or_insert(Memory, screen_location+width_offset); int height_offset = find_element_name(get(Type_ordinal, "screen"), "num-rows", ""); int screen_height = get_or_insert(Memory, screen_location+height_offset); raw_string_stream cursor(expected_contents); // todo: too-long expected_contents should fail int addr = screen_data_start+/*skip length*/1; for (int row = 0; row < screen_height; ++row) { cursor.skip_whitespace_and_comments(); if (cursor.at_end()) break; assert(cursor.get() == '.'); for (int column = 0; column < screen_width; ++column, addr+= /*size of screen-cell*/2) { const int cell_color_offset = 1; uint32_t curr = cursor.get(); if (get_or_insert(Memory, addr) == 0 && isspace(curr)) continue; if (curr == ' ' && color != -1 && color != get_or_insert(Memory, addr+cell_color_offset)) { // filter out other colors continue; } if (get_or_insert(Memory, addr) != 0 && get_or_insert(Memory, addr) == curr) { if (color == -1 || color == get_or_insert(Memory, addr+cell_color_offset)) continue; // contents match but color is off if (Current_scenario && !Scenario_testing_scenario) { // genuine test in a mu file raise << "\nF - " << Current_scenario->name << ": expected screen location (" << row << ", " << column << ", address " << addr << ", value " << no_scientific(get_or_insert(Memory, addr)) << ") to be in color " << color << " instead of " << no_scientific(get_or_insert(Memory, addr+cell_color_offset)) << "\n" << end(); dump_screen(); } else { // just testing check_screen raise << "expected screen location (" << row << ", " << column << ") to be in color " << color << " instead of " << no_scientific(get_or_insert(Memory, addr+cell_color_offset)) << '\n' << end(); } if (!Scenario_testing_scenario) { Passed = false; ++Num_failures; } return; } // really a mismatch // can't print multi-byte unicode characters in errors just yet. not very useful for debugging anyway. char expected_pretty[10] = {0}; if (curr < 256 && !iscntrl(curr)) { // " ('<curr>')" expected_pretty[0] = ' ', expected_pretty[1] = '(', expected_pretty[2] = '\'', expected_pretty[3] = static_cast<unsigned char>(curr), expected_pretty[4] = '\'', expected_pretty[5] = ')', expected_pretty[6] = '\0'; } char actual_pretty[10] = {0}; if (get_or_insert(Memory, addr) < 256 && !iscntrl(get_or_insert(Memory, addr))) { // " ('<curr>')" actual_pretty[0] = ' ', actual_pretty[1] = '(', actual_pretty[2] = '\'', actual_pretty[3] = static_cast<unsigned char>(get_or_insert(Memory, addr)), actual_pretty[4] = '\'', actual_pretty[5] = ')', actual_pretty[6] = '\0'; } ostringstream color_phrase; if (color != -1) color_phrase << " in color " << color; if (Current_scenario && !Scenario_testing_scenario) { // genuine test in a mu file raise << "\nF - " << Current_scenario->name << ": expected screen location (" << row << ", " << column << ") to contain " << curr << expected_pretty << color_phrase.str() << " instead of " << no_scientific(get_or_insert(Memory, addr)) << actual_pretty << '\n' << end(); dump_screen(); } else { // just testing check_screen raise << "expected screen location (" << row << ", " << column << ") to contain " << curr << expected_pretty << color_phrase.str() << " instead of " << no_scientific(get_or_insert(Memory, addr)) << actual_pretty << '\n' << end(); } if (!Scenario_testing_scenario) { Passed = false; ++Num_failures; } return; } assert(cursor.get() == '.'); } cursor.skip_whitespace_and_comments(); assert(cursor.at_end()); } raw_string_stream::raw_string_stream(const string& backing) :index(0), max(SIZE(backing)), buf(backing.c_str()) {} bool raw_string_stream::at_end() const { if (index >= max) return true; if (tb_utf8_char_length(buf[index]) > max-index) { raise << "unicode string seems corrupted at index "<< index << " character " << static_cast<int>(buf[index]) << '\n' << end(); return true; } return false; } uint32_t raw_string_stream::get() { assert(index < max); // caller must check bounds before calling 'get' uint32_t result = 0; int length = tb_utf8_char_to_unicode(&result, &buf[index]); assert(length != TB_EOF); index += length; return result; } uint32_t raw_string_stream::peek() { assert(index < max); // caller must check bounds before calling 'get' uint32_t result = 0; int length = tb_utf8_char_to_unicode(&result, &buf[index]); assert(length != TB_EOF); return result; } void raw_string_stream::skip_whitespace_and_comments() { while (!at_end()) { if (isspace(peek())) get(); else if (peek() == '#') { // skip comment get(); while (peek() != '\n') get(); // implicitly also handles CRLF } else break; } } :(before "End Primitive Recipe Declarations") _DUMP_SCREEN, :(before "End Primitive Recipe Numbers") put(Recipe_ordinal, "$dump-screen", _DUMP_SCREEN); :(before "End Primitive Recipe Checks") case _DUMP_SCREEN: { break; } :(before "End Primitive Recipe Implementations") case _DUMP_SCREEN: { dump_screen(); break; } :(code) void dump_screen() { assert(!current_call().default_space); // not supported int screen_location = get_or_insert(Memory, SCREEN) + /*skip refcount*/1; int width_offset = find_element_name(get(Type_ordinal, "screen"), "num-columns", ""); int screen_width = get_or_insert(Memory, screen_location+width_offset); int height_offset = find_element_name(get(Type_ordinal, "screen"), "num-rows", ""); int screen_height = get_or_insert(Memory, screen_location+height_offset); int data_offset = find_element_name(get(Type_ordinal, "screen"), "data", ""); assert(data_offset >= 0); int screen_data_location = screen_location+data_offset; // type: address:array:character int screen_data_start = get_or_insert(Memory, screen_data_location) + /*skip refcount*/1; // type: array:character assert(get_or_insert(Memory, screen_data_start) == screen_width*screen_height); int curr = screen_data_start+1; // skip length for (int row = 0; row < screen_height; ++row) { cerr << '.'; for (int col = 0; col < screen_width; ++col) { if (get_or_insert(Memory, curr)) cerr << to_unicode(static_cast<uint32_t>(get_or_insert(Memory, curr))); else cerr << ' '; curr += /*size of screen-cell*/2; } cerr << ".\n"; } } </pre> </body> </html>