Programming language theory project. Java source code lexer, semantic analyzer, optimizer and code generator.
The compiler recognizes and can process the following elements of Java language:
- Classes
- Functions with parameters
- Data types
- Int
- Boolean
- Logical and arithmetic operations
- Operators
- Assignment
- If
- Operands
- Variables
- Constants (integers with base 10 or boolean)
For example, the following source code in Java:
class super{
class lapsha_s_sosiskami{
void lapsh_method(int param){
int var;
var = param;
}
int alesha;
int sosiska;
boolean kotiki;
}
void function(int ape){
boolean test, local_kek, result, kotiki;
int a, b, c;
kotiki = (true != (((1 * 2 + 3) % 7 - (18 / 9)) == ((((((2)))))))) == false == local_kek;
a = 4;
b = 2;
function(ape);
}
boolean global;
void lalala(int first_arg, boolean second_arg){
}
void main(int first_arg, boolean second_arg){
boolean var, test, local_kek, result, kotiki;
int a, b, c, global_int;
kotiki = (true != (((1 * 2 + 3) % 7 - (18 / 9)) == ((((((2)))))))) == false == local_kek;
a = 4;
b = 2;
var = true;
if (var && true){
var = false;
if (var){
a = 7;
}
else{
a = 10;
}
}
else{
var = true;
}
}
}will be translated to
.data
super@lapsha_s_sosiskami@alesha: dd 0
super@lapsha_s_sosiskami@sosiska: dd 0
super@lapsha_s_sosiskami@kotiki: db 0
super@global: db 0
.text
global _main
_lapsh_method
push ebp ;prolog
mov ebp, esp
sub esp, 4
push ebx
push esi
push edi
mov eax, [-4]
mov [0], eax
pop edi ;epilog
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
_function
push ebp ;prolog
mov ebp, esp
sub esp, 16
push ebx
push esi
push edi
mov eax, 2
mov ecx, 1
mul ecx
mov ebx, eax
mov eax, 3
add eax, ebx
mov ebx, eax
xor edx, edx
mov eax, 7
mov ecx, ebx
div ecx
mov ebx, edx
xor edx, edx
mov eax, 9
mov ecx, 18
div ecx
mov ebx, eax
mov eax, ebx
sub eax, ebx
mov ebx, eax
mov eax, ebx
mov [3], eax
mov eax, 4
mov [4], eax
mov eax, 2
mov [8], eax
mov eax, 2
mov ecx, 1
mul ecx
mov ebx, eax
mov eax, 3
add eax, ebx
mov ebx, eax
xor edx, edx
mov eax, 7
mov ecx, ebx
div ecx
mov ebx, edx
xor edx, edx
mov eax, 9
mov ecx, 18
div ecx
mov ebx, eax
mov eax, ebx
sub eax, ebx
mov ebx, eax
mov eax, ebx
mov [3], eax
mov eax, 4
mov [4], eax
mov eax, 2
mov [8], eax
mov eax, 2
mov ecx, 1
mul ecx
mov ebx, eax
mov eax, 3
add eax, ebx
mov ebx, eax
xor edx, edx
mov eax, 7
mov ecx, ebx
div ecx
mov ebx, edx
xor edx, edx
mov eax, 9
mov ecx, 18
div ecx
mov ebx, eax
mov eax, ebx
sub eax, ebx
mov ebx, eax
mov eax, ebx
mov [3], eax
mov eax, 4
mov [4], eax
mov eax, 2
mov [8], eax
mov eax, 2
mov ecx, 1
mul ecx
mov ebx, eax
mov eax, 3
add eax, ebx
mov ebx, eax
xor edx, edx
mov eax, 7
mov ecx, ebx
div ecx
mov ebx, edx
xor edx, edx
mov eax, 9
mov ecx, 18
div ecx
mov ebx, eax
mov eax, ebx
sub eax, ebx
mov ebx, eax
mov eax, ebx
mov [3], eax
mov eax, 4
mov [4], eax
mov eax, 2
mov [8], eax
mov eax, 2
mov ecx, 1
mul ecx
mov ebx, eax
mov eax, 3
add eax, ebx
mov ebx, eax
xor edx, edx
mov eax, 7
mov ecx, ebx
div ecx
mov ebx, edx
xor edx, edx
mov eax, 9
mov ecx, 18
div ecx
mov ebx, eax
mov eax, ebx
sub eax, ebx
mov ebx, eax
mov eax, ebx
mov [3], eax
mov eax, 4
mov [4], eax
mov eax, 2
mov [8], eax
mov eax, 2
mov ecx, 1
mul ecx
mov ebx, eax
mov eax, 3
add eax, ebx
mov ebx, eax
xor edx, edx
mov eax, 7
mov ecx, ebx
div ecx
mov ebx, edx
xor edx, edx
mov eax, 9
mov ecx, 18
div ecx
mov ebx, eax
mov eax, ebx
sub eax, ebx
mov ebx, eax
mov eax, ebx
mov [3], eax
mov eax, 4
mov [4], eax
mov eax, 2
mov [8], eax
push [-4]
call function
add esp, 4
pop edi ;epilog
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
_lalala
push ebp ;prolog
mov ebp, esp
push ebx
push esi
push edi
pop edi ;epilog
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
_main
push ebp ;prolog
mov ebp, esp
sub esp, 21
push ebx
push esi
push edi
mov eax, 2
mov ecx, 1
mul ecx
mov ebx, eax
mov eax, 3
add eax, ebx
mov ebx, eax
xor edx, edx
mov eax, 7
mov ecx, ebx
div ecx
mov ebx, edx
xor edx, edx
mov eax, 9
mov ecx, 18
div ecx
mov ebx, eax
mov eax, ebx
sub eax, ebx
mov ebx, eax
mov eax, ebx
mov [4], eax
mov eax, 4
mov [5], eax
mov eax, 2
mov [9], eax
mov eax, 1
mov [0], eax
mov eax, 1
and eax, [0]
mov ebx, eax
mov eax, 0
mov [0], eax
mov eax, 7
mov [5], eax
mov eax, 10
mov [5], eax
mov eax, 1
mov [0], eax
pop edi ;epilog
pop esi
pop ebx
mov esp, ebp
pop ebp
ret