import java util import java lang Object import java util ArrayList im

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import java.util.*;
import java.lang.Object;
import java.util.ArrayList;
import java.io.File;
import java.io.InputStreamReader;
import java.io.FileInputStream;
import java.lang.String;
class Reader {
private File openedFile_;
private BufferedReader reader_;
private ArrayList<String> readedText_;
public Reader(String path) {
openedFile_ = new File(path);
try {
reader_ = new BufferedReader(new InputStreamReader(new FileInputStream(openedFile_), "UTF-8"));
} catch (UnsupportedEncodingException exc) {
System.out.println(" UTF-8 exception. " + exc.getMessage());
} catch (FileNotFoundException exc) {
System.out.println("File Not Found. " + exc.getMessage());
}
readedText_ = new ArrayList<String>();
}
public ArrayList<String> Read() {
String currentString;
try {
while((currentString = reader_.readLine()) != null) {
readedText_.add(currentString);
}
} catch (IOException exc) {
System.out.println("IOException while reading file. " + exc.getMessage());
}
return new ArrayList<String>(readedText_);
}
}
public class Position implements Comparable<Position> {
private String text;
private int line, pos, index;
public Position (String text) {
this.text = text;
line = pos = 1;
index = 0;
}
public String Text(){return text;}
public int Line(){return line;}
public int Pos(){return pos;}
public int Index(){return index;}
public Position copyPos(){
return new Position(text, line, pos, index);
}
public int compareTo (Position other){
return Integer.compare(index, other.index);
}
public String toString(){
return "(" + line + ',' + pos + ')';
}
public int cP() {
if (index == text.length())
return -1;
return Character.codePointAt(text, index);
}
public boolean isWhiteSpace() {
return Character.isWhitespace(cP());
}
public boolean isLetter() {
return Character.isLetter(cP());
}
public boolean isLetterOrDigit() {
return Character.isLetterOrDigit(cP());
}
public boolean isDecimalDigit() {
return (index != text.length() &&
text.charAt(index) >= '0' && text.charAt(index) <= '9');
}
public boolean isNewLine() {
if (index == text.length())
return true;
if (text.charAt(index) == '\r' &&
index + 1 < text.length())
return (text.charAt(index + 1) == '\n');
return (text.charAt(index) == '\n');
}
public void iterate() {
if (index < text.length()) {
if (isNewLine()) {
if (text.charAt(index) == '\r')
index++;
line++;
pos = 1;
} else {
if (Character.isHighSurrogate(text.charAt(index))) {
index++;
}
pos++;
}
index++;
}
}
}
public class Fragment {
private Position starting, following;
public Fragment (Position starting , Position following)
{
this.starting = starting;
this.following = following;
}
public String toString()
{
return starting + " - " + following;
}
public Position Starting() { return starting; }
public Position Following() { return following; }
}
public abstract class Token {
private DomainTag tag;
private Fragment coords;
protected Token(DomainTag tag, Position starting, Position following) {
this.tag = tag;
coords = new Fragment(starting, following);
}
public DomainTag Tag() { return tag; }
public Fragment Coords() { return coords; }
}
public class IdentToken extends Token {
public int Code;
public IdentToken(int code, Position starting, Position following){
super(DomainTag.IDENT, starting, following);
Code = code;
}
}
public class NumberToken extends Token {
public long Value;
public NumberToken(long val, Position starting, Position following){
super(DomainTag.NUMBER, starting, following);
Value = val;
}
}
public class OperToken extends Token {
public String Num;
public OperToken(String num, Position starting, Position following){
super(DomainTag.OPER, starting, following);
Num = num;
}
}
public class Scanner {
public String program;
private Compiler compiler;
private Position cur;
private ArrayList<Fragment> comments;
public ArrayList<Fragment> Comments(){
return comments;
}
public Scanner (String program, Compiler compiler){
this.compiler = compiler;
cur = new Position(this.program = program);
comments = new ArrayList<Fragment>();
}
public Token NextToken(){
while (cur.cP() != -1){
while (cur.isWhiteSpace())
cur.iterate();
Position start = cur.copyPos();
switch (cur.cP()){
case '<':
cur.iterate();
if (cur.cP() == '='){
cur.iterate();
return new OperToken("<=", start, cur.copyPos());
}
if (cur.isDecimalDigit()){
long val = 0;
while(cur.isDecimalDigit()){
val *= 10;
val += cur.cP() - '0';
cur.iterate();
}
if (cur.cP() == '>' ) cur.iterate();
else compiler.AddMessage( true , cur.copyPos(), " > expected " );
return new NumberToken(val, start, cur.copyPos());
}
break;
case '=':
cur.iterate();
if (cur.cP() == '='){
cur.iterate();
return new OperToken("==", start, cur.copyPos());
}
return new OperToken("=", start, cur.copyPos());
default:
if (cur.cP() == 'e' || cur.cP() == 'u' || cur.cP() == 'i' || cur.cP() == 'o' || cur.cP() == 'a'){
String buf = "";
while(cur.isLetterOrDigit()){
buf += new String(Character.toChars(cur.cP()));
cur.iterate();
}
return new IdentToken(compiler.AddName(buf), start, cur.copyPos());
}
if(cur.cP() == -1)
return new SpecToken(DomainTag.END_OF_PROGRAM, cur.copyPos(), cur.copyPos() );
compiler.AddMessage( true , cur.copyPos(), "unexpected character " + new String(Character.toChars(cur.cP())) );
while (!cur.isWhiteSpace() && cur.cP() != -1)
cur.iterate();
break;
}
}
return new SpecToken(DomainTag.END_OF_PROGRAM, cur.copyPos(), cur.copyPos() );
}
}
public class main {
public static void main(String args[]) {
String program;
try {
File f = new File("C:/Users/Denis/file");
char[] CB = new char[(int) f.length()];
Reader reader = new InputStreamReader(new FileInputStream(f), "UTF-8");
reader.read(CB);
program = new String(CB);
} catch (Exception ex) {
System.out.println(ex);
return;
}
Compiler comp = new Compiler();
Scanner scan = new Scanner(program, comp);
Token t;
while( (t = scan.NextToken()).Tag != DomainTag.END_OF_PROGRAM){
System.out.print(t.Tag + " ");
System.out.print(t.Coords + " ");
switch (t.Tag){
case IDENT:
System.out.print(comp.GetName(((IdentToken) t).Code) + "\n");
break;
case OPER:
System.out.print(((OperToken)t).Num + "\n");
break;
case NUMBER:
System.out.print(((NumberToken)t).Value + "\n");
break;
}
}
comp.OutputMessages();
System.out.println("Program text:");
System.out.println(program);
}
}