semantic analyzer to check for type errors, undefined variables, and other semantic errors in the program. Generating intermediate code from the AST, such as three-address code or bytecode. Optimizing the intermediate code to improve the efficiency of the generated machine code. Generating the final machine code, such as x86 assembly language, that can be executed on a computer.
Please edit my given code at the bottom to contain the following steps
Defining the syntax of the SPL, including its basic data types, control structures, and functions.
Implementing a parser to construct an abstract syntax tree (AST) from the token stream
that represents the structure of the
Implementing a semantic analyzer to check for type errors, undefined variables, and other
semantic errors in the program.
Generating intermediate code from the AST, such as three-address code or bytecode.
Optimizing the intermediate code to improve the efficiency of the generated machine code.
Generating the final machine code, such as x86 assembly language, that can be executed
on a computer.
I need an original answer. Don't copy paste answers from other questions and I need an actual compiler. Pleases show the output/results. It needs to be in Java
import java.util.*;
public class SimpleCalculator {
private final String input;
private int position;
public SimpleCalculator(String input) {
this.input = input;
this.position = 0;
}
public static void main(String[] args) {
SimpleCalculator calculator = new SimpleCalculator("3 + 5 * (2 - 1)");
int result = calculator.parseExpression();
System.out.println("Result: " + result);
}
public int parseExpression() {
int value = parseTerm();
while (true) {
if (consume('+')) {
value += parseTerm();
} else if (consume('-')) {
value -= parseTerm();
} else {
break;
}
}
return value;
}
public int parseTerm() {
int value = parseFactor();
while (true) {
if (consume('*')) {
value *= parseFactor();
} else if (consume('/')) {
value /= parseFactor();
} else {
break;
}
}
return value;
}
public int parseFactor() {
if (consume('(')) {
int value = parseExpression();
consume(')');
return value;
}
StringBuilder sb = new StringBuilder();
while (Character.isDigit(peek())) {
sb.append(consume());
}
return Integer.parseInt(sb.toString());
}
private char consume() {
return input.charAt(position++);
}
private boolean consume(char c) {
if (peek() == c) {
position++;
return true;
}
return false;
}
private char peek() {
return position < input.length() ? input.charAt(position) : '\0';
}
}
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