java-projects/Own-Programming-Language-Tutorial
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Рефакторинг: параметры запуска в отдельном объекте

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Victor 2016-06-20 01:49:58 +03:00
parent 8f0f37956f
commit 840f049e15
1 changed files with 26 additions and 13 deletions
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39
src/com/annimon/ownlang/Main.java
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@ -8,7 +8,6 @@ import com.annimon.ownlang.parser.Parser;
import com.annimon.ownlang.parser.SourceLoader; import com.annimon.ownlang.parser.SourceLoader;
import com.annimon.ownlang.parser.Token; import com.annimon.ownlang.parser.Token;
import com.annimon.ownlang.parser.ast.Statement; import com.annimon.ownlang.parser.ast.Statement;
import com.annimon.ownlang.parser.visitors.AssignValidator;
import com.annimon.ownlang.parser.visitors.FunctionAdder; import com.annimon.ownlang.parser.visitors.FunctionAdder;
import java.io.IOException; import java.io.IOException;
import java.util.List; import java.util.List;
@ -31,28 +30,33 @@ public final class Main {
public static void main(String[] args) throws IOException { public static void main(String[] args) throws IOException {
if (args.length == 0) { if (args.length == 0) {
try { try {
run(SourceLoader.readSource("program.own"), true, true, true); final Options options = new Options();
options.showAst = true;
options.showTokens = true;
options.showMeasurements = true;
run(SourceLoader.readSource("program.own"), options);
} catch (IOException ioe) { } catch (IOException ioe) {
System.out.println("OwnLang version " + VERSION + "\n\n" + System.out.println("OwnLang version " + VERSION + "\n\n" +
"Usage: ownlang [options]\n" + "Usage: ownlang [options]\n" +
" options:\n" + " options:\n" +
" -f, --file [input] Run program file. Required.\n" + " -f, --file [input] Run program file. Required.\n" +
" -r, --repl Enter to a REPL mode\n" + " -r, --repl Enter to a REPL mode\n" +
" -b, --beautify Beautify source code\n" +
" -a, --showast Show AST of program\n" + " -a, --showast Show AST of program\n" +
" -t, --showtokens Show lexical tokens\n" + " -t, --showtokens Show lexical tokens\n" +
" -m, --showtime Show elapsed time of parsing and execution"); " -m, --showtime Show elapsed time of parsing and execution");
} }
return; return;
} }
boolean showTokens = false, showAst = false, showMeasurements = false; final Options options = new Options();
boolean beautifyMode = false; boolean beautifyMode = false;
String input = null; String input = null;
for (int i = 0; i < args.length; i++) { for (int i = 0; i < args.length; i++) {
switch (args[i]) { switch (args[i]) {
case "-a": case "-a":
case "--showast": case "--showast":
showAst = true; options.showAst = true;
break; break;
case "-b": case "-b":
@ -62,12 +66,12 @@ public final class Main {
case "-t": case "-t":
case "--showtokens": case "--showtokens":
showTokens = true; options.showTokens = true;
break; break;
case "-m": case "-m":
case "--showtime": case "--showtime":
showMeasurements = true; options.showMeasurements = true;
break; break;
case "-r": case "-r":
@ -99,7 +103,7 @@ public final class Main {
System.out.println(Beautifier.beautify(input)); System.out.println(Beautifier.beautify(input));
return; return;
} }
run(input, showTokens, showAst, showMeasurements); run(input, options);
} }
private static void createOwnLangArgs(String[] javaArgs, int index) { private static void createOwnLangArgs(String[] javaArgs, int index) {
@ -108,12 +112,12 @@ public final class Main {
System.arraycopy(javaArgs, index, ownlangArgs, 0, ownlangArgs.length); System.arraycopy(javaArgs, index, ownlangArgs, 0, ownlangArgs.length);
} }
private static void run(String input, boolean showTokens, boolean showAst, boolean showMeasurements) { private static void run(String input, Options options) {
final TimeMeasurement measurement = new TimeMeasurement(); final TimeMeasurement measurement = new TimeMeasurement();
measurement.start("Tokenize time"); measurement.start("Tokenize time");
final List<Token> tokens = Lexer.tokenize(input); final List<Token> tokens = Lexer.tokenize(input);
measurement.stop("Tokenize time"); measurement.stop("Tokenize time");
if (showTokens) { if (options.showTokens) {
for (int i = 0; i < tokens.size(); i++) { for (int i = 0; i < tokens.size(); i++) {
System.out.println(i + " " + tokens.get(i)); System.out.println(i + " " + tokens.get(i));
} }
@ -123,7 +127,7 @@ public final class Main {
final Parser parser = new Parser(tokens); final Parser parser = new Parser(tokens);
final Statement program = parser.parse(); final Statement program = parser.parse();
measurement.stop("Parse time"); measurement.stop("Parse time");
if (showAst) { if (options.showAst) {
System.out.println(program.toString()); System.out.println(program.toString());
} }
if (parser.getParseErrors().hasErrors()) { if (parser.getParseErrors().hasErrors()) {
@ -131,14 +135,13 @@ public final class Main {
return; return;
} }
program.accept(new FunctionAdder()); program.accept(new FunctionAdder());
program.accept(new AssignValidator());
try { try {
measurement.start("Execution time"); measurement.start("Execution time");
program.execute(); program.execute();
} catch (Exception ex) { } catch (Exception ex) {
Console.handleException(Thread.currentThread(), ex); Console.handleException(Thread.currentThread(), ex);
} finally { } finally {
if (showMeasurements) { if (options.showMeasurements) {
measurement.stop("Execution time"); measurement.stop("Execution time");
System.out.println("======================"); System.out.println("======================");
System.out.println(measurement.summary(TimeUnit.MILLISECONDS, true)); System.out.println(measurement.summary(TimeUnit.MILLISECONDS, true));
@ -183,4 +186,14 @@ public final class Main {
} }
scanner.close(); scanner.close();
} }
private static class Options {
boolean showTokens, showAst, showMeasurements;
public Options() {
showTokens = false;
showAst = false;
showMeasurements = false;
}
}
} }