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import java.io.*;
import java.util.ArrayList;
import cs132.util.ProblemException;
import cs132.vapor.parser.VaporParser;
import cs132.vapor.ast.VaporProgram;
import cs132.vapor.ast.VBuiltIn.Op;
import cs132.vapor.ast.VDataSegment;
import cs132.vapor.ast.VFunction;
import cs132.vapor.ast.VInstr;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.PrintStream;
import cfg.*;
import misc.*;
import vaporize.library.*;
public class V2VM {
public static void main(String[] args) {
try {
System.in.mark(-1);
InputStream systemInCopy = createCopyOfSystemIn();
System.in.reset();
ArrayList<String> strProg = inputStreamToArrayList(systemInCopy);
VaporProgram prog = parseVapor(System.in, System.out);
MinimalLogger.info(String.format("Generating CFGs..."));
CFGSimp cfv = new CFGSimp(prog, strProg);
ArrayList<ControlFlowGraph> cfgs = cfv.getCFGs();
// MinimalLogger.info(String.format("Spilling Everywhere..."));
// SpillEverywhere spill = new SpillEverywhere(prog, strProg);
} catch (IOException e) {
System.out.println(e.toString());
System.exit(1);
}
}
public static VaporProgram parseVapor(InputStream in, PrintStream err) throws IOException {
Op[] ops = {
Op.Add, Op.Sub, Op.MulS, Op.Eq, Op.Lt, Op.LtS,
Op.PrintIntS, Op.HeapAllocZ, Op.Error,
};
boolean allowLocals = true;
String[] registers = {
"v0", "v1",
"a0", "a1", "a2", "a3",
"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
"t8",
};
boolean allowStack = false;
VaporProgram program;
try {
program = VaporParser.run(new InputStreamReader(in), 1, 1,
java.util.Arrays.asList(ops),
allowLocals, registers, allowStack);
} catch (ProblemException ex) {
err.println(ex.getMessage());
return null;
}
return program;
}
public static ArrayList<String> inputStreamToArrayList(InputStream inputStream) {
ArrayList<String> lines = new ArrayList<>();
try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
String line;
while ((line = reader.readLine()) != null) {
lines.add(line);
}
} catch (IOException e) {
e.printStackTrace();
}
return lines;
}
private static InputStream createCopyOfSystemIn() {
byte[] buffer = new byte[1024];
int bytesRead;
ByteArrayInputStream bais = new ByteArrayInputStream(buffer);
try {
bytesRead = System.in.read(buffer);
bais = new ByteArrayInputStream(buffer, 0, bytesRead);
} catch (IOException e) {
e.printStackTrace();
}
return bais;
}
}
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