Language

!!!! WARNING:: The matrix is not fully implemented.

Content:

• Some reduction in function
• Formal record of the language's rules
• Formal ASM translation rules for CPU of mine
• Some code programms
• Error handler
• Tree view
  • Before optimization
  • After optimization
• What has been optimized
• ASM code

Some reduction in function

FuncInit -- Function initialization
FuncArguments -- Read function arguments

G -- Grammar
VU -- Variables using
IF -- If
WHILE -- While
SHOW -- Print on the screen
MLU -- Matrix and list using
FU -- Function using

LST -- List

VI -- Variables initialization
NVV -- New value of variables

COMP -- Compare
E -- Expression
T -- Term
D -- Degree
P -- Primary expression
MF -- Math functions
LI -- List item
V -- Variable
N -- Number

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Formal record of the language's rules

Expression list:

• Users function declaration
• Basic expressions
• List and matrix declaration
• Variable declaration and new value expression
• Elementary tokens
• Service tokens & others

User function declaration:

---

FuncInit::= function name_of_function ( FuncArguments ) { G }
{
   function name_of_function ( FuncArguments ) { G }
}* END_OF_TOKENS

FuncArguments::= [a-z,A-Z]+ { space [a-z,A-Z]+ }*

Basic expressions:

---

G::= { VU | IF | WHILE | SHOW |MLU | FU}*

VU::= { { @ VI ; } | { NVV ; } }*

IF::= if ( E ) true { G } else { G }

WHILE::= while (E) { G }

SHOW::= show [this V, N] ;

MLU::= let [a-z,A-Z]+ { , [a-z,A-Z]+}* as int MRX | LST { and MLU[without let]}* // int | dot

FU::= name_of_function ( E { , E }*)

List and matrix declaration:

---

MRX::= matrix (N * N)={N{,N}* }

LST::= list ( N ) = { N { , N}* } (list's variable that didn't initialized is declared zero value)

Variable declaration and new value expression:

---

VI::= [a-z,A-Z]+ { = VI | E { , VI }* }* (variable without equal sign is declared zero value)

NVV::= [a-z,A-Z]+ | LI = COMP

Elementary tokens:

---

COMP::= E{ [more, less, equal, leseq, greq] E }*

E::= T{ [+-] T }*

T::= D{ [* \ ] D }*

D::= P{ [^] P }*

P::= ( E ) | N | LI | V | MF

MF::= [sin, cos, tg, ln]( N ) (when calculating, the final value is multiplied by 100 and rounded to an integer)

LI::= [a-z,A-Z]+ [ N ]

V::= [a-z,A-Z]+

N::= [0-9]+

Service tokens & others:

---

END_OF_TOKENS -- special signal note of the end of programm
one line comments::= # some text 'new_line'
multi line comments::= ## some text ##

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Formal ASM translation rules for CPU of mine

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Some code programms

function examle ( argA argB)
{
  @bec = all = (1 + 2 + argA), x = y = 1, regC;
  
  @zero;

  if ( 12 )
  true
  {
    bec = 3 * 1 - 2;
  }
  else
  {}

  while ( bec )
  { 
    @DF;
  }

  let OneList   as
     #TwoList   as 
     #ThreeList as
  int list (3) = {2 + 1 * 13 - 12 - bec, 24}

  bec = 1;
}

function main () 
{
  @Zero;
  
  Zero = 1 more Zero + ln(10) / 100;

  let ThreeList as
  int list (3) = {2, 24}

  #ThreeList[1] = ThreeList[1] + 111;

  Zero = ThreeList[1] + 111;

  show this ThreeList;

  if(Zero) true{}
  else
  {
    show this Zero;
  }

  show 345;

  examle (1, ThreeList[2])
}

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Error handler

If you made any mistakes during the writing process (such as incorrect type or forgot to declare a variable, specified an incorrect function name, etc.), then on the command line, you will see the type of problem and in detail where it is located.

Looks like:

----     ERRORS     ----

noValue_examle ;
 ^
 ^ error here
Line 7, Column 10

variable noValue_examle didn't initialize.

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Tree view

Before the conversion to ASM code begins, the tree undergoes preliminary optimization (removing empty blocks, collapsing constants, and others).

Before optimization:

After optimization:

What has been optimized?

Unoptimized

Optimized

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ASM code

PUSH 0
POP [15]

PUSH [15]
PUSH 2
ADD

PUSH 1
	JA IF_END0
PUSH 0

JMP IF_FALSE0
	IF_END0:
PUSH 1

	IF_FALSE0:
POP [15]

PUSH 2
POP [16]

PUSH 24
POP [17]

PUSH 0
POP [18]

PUSH 3
POP [19]

PUSH [17]
PUSH 111
ADD

POP [15]

PUSH [19]
OUT

PUSH [15]
PUSH 0
 	JB IF_FALSE1

	JMP IF_END1
	IF_FALSE1:

PUSH [15]
OUT

	IF_END1:

PUSH 345
OUT

PUSH [18]

CALL examle
HLT


examle:

POP [2]
POP [1]

PUSH 3
PUSH [1]
ADD

POP [4]

PUSH [4]
POP [3]

PUSH 1
POP [6]

PUSH [6]
POP [5]

PUSH 0
POP [7]

PUSH 0
POP [8]

PUSH 12
PUSH 0
 	JB IF_FALSE2

PUSH 1
POP [3]

	JMP IF_END2
	IF_FALSE2:

	IF_END2:

	WHILE_HEAD3:

PUSH [3]
PUSH 0
 	JB WHILE_END3

PUSH 0
POP [9]

	JMP WHILE_HEAD3
	WHILE_END3:

PUSH 3
PUSH [3]
SUB

POP [10]

PUSH 24
POP [11]

PUSH 0
POP [12]

PUSH 3
POP [13]

PUSH 1
POP [3]

RET

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