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Added possibility to pass filenames for input / output

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This commit is contained in:
Marvin Kaiser
2020-02-03 17:16:27 +01:00
parent a2c9625691
commit 69f44a2867
2 changed files with 45 additions and 25 deletions
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62
src/main/java/de/hsrm/compiler/Klang/Klang.java
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@@ -15,24 +15,40 @@ import de.hsrm.compiler.Klang.helper.*;
public class Klang {
private static void generateOutput(String file, String output) {
if (file != null) {
try {
var outFile = new FileWriter(file);
outFile.write(output);
outFile.close();
} catch (Exception e) {
System.err.println("Cannot write output to file");
e.printStackTrace();
}
return;
}
System.out.println(output);
}
public static void main(String[] args) throws Exception {
boolean evaluate = false;
boolean prettyPrint = false;
boolean compile = true;
String mainName = "main";
String out = null;
List<String> arguments = Arrays.asList(args);
if (arguments.contains("-h") || arguments.contains("--help") || arguments.contains("?")) {
if (arguments.size() <= 0 || arguments.contains("-h") || arguments.contains("--help") || arguments.contains("?")) {
System.out.println("\nKaiser Lang Compiler");
System.out.println("Authors: Dennis Kaiser and Marvin Kaiser");
System.out.println("");
System.out.println("Pass source code via stdin");
System.out.println("Last argument must be file");
System.out.println("");
System.out.println("Arguments:");
System.out.println("--out <file>:\t File to write to");
System.out.println("--evaluate:\t Evaluates the given source code");
System.out.println("--pretty:\t Pretty print the given source code");
System.out.println("--no-compile:\t Do not compile the source code");
System.out.println("--no-main:\t Do not generate main function, will be generated as 'start'. Useful for testing");
System.out
.println("--no-main:\t Do not generate main function, will be generated as 'start'. Useful for testing");
return;
}
if (arguments.contains("--evaluate")) {
@@ -41,15 +57,19 @@ public class Klang {
if (arguments.contains("--pretty")) {
prettyPrint = true;
}
if (arguments.contains("--no-compile")) {
compile = false;
}
if (arguments.contains("--no-main")) {
mainName = "start";
}
if (arguments.contains("-o")) {
if (arguments.size() <= 1) {
System.out.println("Must specify file name with -o");
return;
}
out = arguments.get(arguments.indexOf("-o") + 1);
}
// create a CharStream that reads from standard input
CharStream input = CharStreams.fromStream(System.in);
CharStream input = CharStreams.fromFileName(arguments.get(arguments.size() - 1));
// create a lexer that feeds off of input CharStream
KlangLexer lexer = new KlangLexer(input);
@@ -77,17 +97,8 @@ public class Klang {
PrettyPrintVisitor.ExWriter ex = new PrettyPrintVisitor.ExWriter(w);
PrettyPrintVisitor printVisitor = new PrettyPrintVisitor(ex);
node.welcome(printVisitor);
System.out.println(w.toString());
}
if (compile) {
// Generate assembler code
// System.out.println("\nPrinting the assembler code");
StringWriter wAsm = new StringWriter();
GenASM.ExWriter exAsm = new GenASM.ExWriter(wAsm);
GenASM genasm = new GenASM(exAsm, mainName);
node.welcome(genasm);
System.out.println(wAsm.toString());
generateOutput(out, w.toString());
return;
}
if (evaluate) {
@@ -96,10 +107,19 @@ public class Klang {
EvalVisitor evalVisitor = new EvalVisitor();
Value result = node.welcome(evalVisitor);
if (result != null) {
System.out.println("result: " + result.asInteger());
generateOutput(out, "Result was: TODO");
} else {
System.out.println("result was null");
}
return;
}
// Generate assembler code
// System.out.println("\nPrinting the assembler code");
StringWriter wAsm = new StringWriter();
GenASM.ExWriter exAsm = new GenASM.ExWriter(wAsm);
GenASM genasm = new GenASM(exAsm, mainName);
node.welcome(genasm);
generateOutput(out, wAsm.toString());
}
}