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myrpal.py
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import Tokernizer
from Tokernizer import Screener
import controlStructure
from cseMachine import CSEMachine
import os
from ASTNode import ASTNode
BLACK = '\033[30m'
RED = '\033[31m'
GREEN = '\033[32m'
YELLOW = '\033[33m' # orange on some systems
BLUE = '\033[34m'
MAGENTA = '\033[35m'
CYAN = '\033[36m'
LIGHT_GRAY = '\033[37m'
DARK_GRAY = '\033[90m'
BRIGHT_RED = '\033[91m'
BRIGHT_GREEN = '\033[92m'
BRIGHT_YELLOW = '\033[93m'
BRIGHT_BLUE = '\033[94m'
BRIGHT_MAGENTA = '\033[95m'
BRIGHT_CYAN = '\033[96m'
WHITE = '\033[97m'
RESET = '\033[0m' # called to return to standard terminal text color
BLACK = '\033[30m'
RED = '\033[31m'
GREEN = '\033[32m'
YELLOW = '\033[33m' # orange on some systems
class ASTParsser:
def __int__(self, tokens1):
self.tokens = tokens1
self.current_token = None
self.index = 0
def read(self):
if self.current_token.type in [Tokernizer.TokenType.ID, Tokernizer.TokenType.INT,
Tokernizer.TokenType.STRING] :
terminalNode = ASTNode( str(self.current_token.type))
terminalNode.value= self.current_token.value
stack.append(terminalNode)
# #print stack
# #print("stack content after reading")
# for node in stack:
# #print(node.data)
if self.current_token.value in ['true', 'false', 'nil', 'dummy']:
# stack.append(ASTNode(self.current_token.value))
terminalNode = ASTNode(str(self.current_token.type))
terminalNode.value = self.current_token.value
stack.append(terminalNode)
#print("reading : " + str(self.current_token.value))
self.index += 1
if (self.index < len(self.tokens)):
self.current_token = self.tokens[self.index]
# elif self.index >=len(self.tokens):
def buildTree(self, token, ariness):
global stack
#print("stack content before ")
# for node in stack:
# node.print_tree_to_cmd()
# #print("building tree")
node = ASTNode(token)
node.value = None
node.sourceLineNumber = -1
node.child = None
node.sibling = None
node.previous = None
while ariness > 0:
# #print("error in while loop")
child = stack[-1]
stack.pop()
# Assuming pop() is a function that returns an ASTNode
if node.child is not None:
child.sibling = node.child
node.child.previous = child
# node.previous = child
node.child = child
node.sourceLineNumber = child.sourceLineNumber
ariness -= 1
# node.print_tree()
stack.append(node) # Assuming push() is a function that pushes a node onto a stack
# #print("stack content after")
for node in stack:
pass
# #print(node.type)
def procE(self):
#print('procE')
match self.current_token.value:
case 'let':
self.read()
self.procD()
if self.current_token.value != 'in':
# #print("Error: in is expected")
return
self.read()
#print("E->let D in E #####")
self.procE()
#print("E->let D in E #")
# #print('E->let D in E')
self.buildTree("let", 2)
case 'fn':
n = 0
self.read()
while self.current_token.type == Tokernizer.TokenType.ID or self.current_token.value == '(':
self.procVb()
n += 1
if n == 0:
#print("E: at least one 'Vb' expected\n")
return
if self.current_token.value != '.':
#print("Error: . is expected")
return
self.read()
self.procE()
# #print('E->fn Vb . E')
self.buildTree("lambda", n+1)
case _:
self.procEw()
# #print('E->Ew')
def procEw(self):
#print('procEw')
self.procT()
# #print('Ew->T')
if self.current_token.value == 'where':
self.read()
self.procDr()
# #print('Ew->T where Dr')
self.buildTree("where", 2)
def procT(self):
# print('procT')
self.procTa()
# print('T->Ta')
n = 0
while self.current_token.value == ',':
self.read()
self.procTa()
n += 1
# print('T->Ta , Ta')
if n > 0:
self.buildTree("tau", n + 1)
else:
pass
# print('T->Ta')
def procTa(self):
# print('procTa')
self.procTc()
# print('Ta->Tc')
while self.current_token.value == 'aug':
self.read()
self.procTc()
# print('Ta->Tc aug Tc')
self.buildTree("aug", 2)
def procTc(self):
# print('procTc')
self.procB()
# print('Tc->B')
if self.current_token.type == Tokernizer.TokenType.TERNARY_OPERATOR:
self.read()
self.procTc()
if self.current_token.value != '|':
print("Error: | is expected")
return
self.read()
self.procTc()
# print('Tc->B -> Tc | Tc')
self.buildTree("->", 3)
def procB(self):
# print('procB')
self.procBt()
# print('B->Bt')
while self.current_token.value == 'or':
self.read()
self.procBt()
# print('B->B or B')
self.buildTree("or", 2)
def procBt(self):
# print('procBt')
self.procBs()
# print('Bt->Bs')
while self.current_token.value == '&':
self.read()
self.procBs()
# print('Bt->Bs & Bs')
self.buildTree("&", 2)
def procBs(self):
# print('procBs')
if self.current_token.value == 'not':
self.read()
self.procBp()
# print('Bs->not Bp')
self.buildTree("not", 1)
else:
self.procBp()
# print('Bs->Bp')
def procBp(self):
# print('procBp')
self.procA()
# print('Bp->A')
# print(self.current_token.value+"######")
## Bp -> A ( 'gr' | '>') A
match self.current_token.value:
case '>':
self.read()
self.procA()
# print('Bp->A gr A')
self.buildTree("gr", 2)
case 'gr':
self.read()
self.procA()
# print('Bp->A gr A')
self.buildTree("gr", 2)
case 'ge':
self.read()
self.procA()
# print('Bp->A ge A')
self.buildTree("ge", 2)
case '>=':
self.read()
self.procA()
# print('Bp->A ge A')
self.buildTree("ge", 2)
case '<':
self.read()
self.procA()
# print('Bp->A ls A')
self.buildTree("ls", 2)
case 'ls':
self.read()
self.procA()
# print('Bp->A ls A')
self.buildTree("ls", 2)
case '<=':
self.read()
self.procA()
# print('Bp->A le A')
self.buildTree("le", 2)
case 'le':
self.read()
self.procA()
# print('Bp->A le A')
self.buildTree("le", 2)
case 'eq':
self.read()
self.procA()
# print('Bp->A eq A')
self.buildTree("eq", 2)
case 'ne':
self.read()
self.procA()
# print('Bp->A ne A')
self.buildTree("ne", 2)
case _:
return
def procA(self):
# print('procA')
if self.current_token.value == '+':
self.read()
self.procAt()
# print('A->+ At')
# self.buildTree("+", 1)
elif self.current_token.value == '-':
self.read()
self.procAt()
# print('A->- At')
self.buildTree("neg", 1)
else:
self.procAt()
# print('A->At')
plus = '+'
while self.current_token.value == '+' or self.current_token.value == '-':
if self.current_token.value=='-':
plus='-'
self.read()
self.procAt()
# print('A->A + / -At')
# print(self.current_token.value)
self.buildTree(plus, 2)
def procAt(self):
# print('procAt')
self.procAf()
# print('At->Af')
while self.current_token.value == '*' or self.current_token.value == '/':
self.read()
self.procAf()
# print('At->Af * Af')
# print("current token value " + self.current_token.value)
self.buildTree("*", 2)
def procAf(self):
# print('procAf')
self.procAp()
# print('Af->Ap')
while self.current_token.value == '**':
self.read()
self.procAf()
# print('Af->Ap ** Af')
self.buildTree("**", 2)
def procAp(self):
# print('procAp')
self.procR()
# print('Ap->R')
while self.current_token.value == '@':
self.read()
self.procR()
# print('Ap->R @ R')
self.buildTree("@", 2)
def procR(self):
# print('procR')
self.procRn()
# print('R->Rn')
# self.read()
while (self.current_token.type in [Tokernizer.TokenType.ID, Tokernizer.TokenType.INT,
Tokernizer.TokenType.STRING] or self.current_token.value in ['true', 'false',
'nil', 'dummy',
"("]):
if self.index >= len(self.tokens):
break
self.procRn()
# print('R->R Rn')
self.buildTree("gamma", 2)
# self.read()
def procRn(self):
# print("procRn")
if self.current_token.type in [Tokernizer.TokenType.ID, Tokernizer.TokenType.INT,
Tokernizer.TokenType.STRING]:
# print('Rn->' + str(self.current_token.value))
self.read()
# self.read()
# self.buildTree("id", 0)
elif self.current_token.value in ['true', 'false', 'nil', 'dummy']:
# print('Rn->' + self.current_token.value)
self.read()
# print("self.current_token.value" , self.current_token.value)
# self.buildTree(self.current_token.value, 0)
elif self.current_token.value == '(':
self.read()
self.procE()
if self.current_token.value != ')':
# print("Error: ) is expected")
return
self.read()
# print('Rn->( E )')
# self.buildTree("()", 1)
def procD(self):
# print('procD')
self.procDa()
# print('D->Da')
while self.current_token.value == 'within':
self.read()
self.procD()
# print('D->Da within D')
self.buildTree("within", 2)
def procDa(self):
# print('procDa')
self.procDr()
# print('Da->Dr')
n = 0
while self.current_token.value == 'and':
n += 1
self.read()
self.procDa()
# print('Da->and Dr')
# if n == 0:
# print("Error")
# return
if n > 0:
self.buildTree("and", n + 1)
def procDr(self):
# print('procDr')
if self.current_token.value == 'rec':
self.read()
self.procDb()
# print('Dr->rec Db')
self.buildTree("rec", 1)
self.procDb()
# print('Dr->Db')
def procDb(self):
# print('procDb')
if self.current_token.value == '(':
self.read()
self.procD()
if self.current_token.value != ')':
# print("Error: ) is expected")
return
self.read()
# print('Db->( D )')
self.buildTree("()", 1)
elif self.current_token.type == Tokernizer.TokenType.ID:
self.read()
if self.current_token.type == Tokernizer.TokenType.COMMA:
# Db -> Vl '=' E => '='
self.read()
self.procVb()
if self.current_token.value != '=':
print("Error: = is expected")
return
self.buildTree(",", 2)
self.read()
self.procE()
self.buildTree("=", 2)
else :
if self.current_token.value == '=':
self.read()
self.procE()
# print('Db->id = E')
self.buildTree("=", 2)
else :
n = 0
while self.current_token.type == Tokernizer.TokenType.ID or self.current_token.value == '(':
self.procVb()
n += 1
if n == 0:
print("Error: ID or ( is expected")
return
if self.current_token.value != '=':
print("Error: = is expected")
return
self.read()
self.procE()
# print('Db->identifier Vb+ = E')
self.buildTree("function_form", n + 2)
# else:
# self.procVL()
# print(self.current_token.value)
# if self.current_token.value != '=':
# print("Error: = is expected")
# return
# self.read()
# self.procE()
# print('Db->Vl = E')
# self.buildTree("=", 2)
def procVb(self):
# print('procVb')
if self.current_token.type == Tokernizer.TokenType.ID:
self.read()
# print('Vb->id')
# self.buildTree("id", 1)
elif self.current_token.value == '(':
self.read()
# print(self.current_token.value)
if self.current_token.type == ')':
# print('Vb->( )')
self.buildTree("()", 0)
self.read()
else:
self.procVL()
# print('Vb->( Vl )')
if self.current_token.value != ')':
print("Error: ) is expected")
return
self.read()
# self.buildTree("()", 1)
else:
print("Error: ID or ( is expected")
return
def procVL(self):
# print("procVL")
# print("559 "+str(self.current_token.value))
if self.current_token.type != Tokernizer.TokenType.ID:
pass
# print("562 VL: Identifier expected") # Replace with appropriate error handling
else:
pass
# print('VL->' + self.current_token.value)
self.read()
trees_to_pop = 0
while self.current_token.value == ',':
# Vl -> '<IDENTIFIER>' list ',' => ','?;
self.read()
if self.current_token.type != Tokernizer.TokenType.ID:
print(" 572 VL: Identifier expected") # Replace with appropriate error handling
self.read()
# print('VL->id , ?')
trees_to_pop += 1
# print('498')
if trees_to_pop > 0:
self.buildTree(',', trees_to_pop +1) # +1 for the child identifier
if __name__ == "__main__":
import sys
if len(sys.argv) > 1:
argv_idx = 1 # Index of file name in argv
ast_flag = 0 # Flag to check if AST or ST is to be printed
if len(sys.argv) == 3: # Check if AST or ST flag is present
argv_idx = 2
if sys.argv[2] == "-ast": # Check if AST flag is present
# print("AST flag is set")
ast_flag = 1
input_path = sys.argv[1]
else:
# print("Error: CSE machine not yet built . try -ast switch as second argument")
# sys.exit(1)
input_path = sys.argv[1]
with open(input_path) as file:
program = file.read();
stack = []
tokens = []
# tokenize input
tokenizer = Tokernizer.Tokenizer(program)
token = tokenizer.get_next_token()
while token.type != Tokernizer.TokenType.EOF:
tokens.append(token)
token = tokenizer.get_next_token()
# sreen tokens
screener = Screener(tokens)
tokens = screener.screen()
parser = ASTParsser()
parser.tokens = tokens
parser.current_token = tokens[0]
parser.index = 0
parser.procE()
# print(len(stack))
root = stack[0]
# root.print_tree()
with open("output_files/" + input_path.split("\\")[-1], "w") as file:
root.indentation = 0
root.print_tree_to_file(file)
if ast_flag == 1: root.print_tree_to_cmd()
if ast_flag == 0:
ASTStandarizer = ASTNode("ASTStandarizer")
root = ASTStandarizer.standarize(root)
with open( "output_files/"+input_path.split("\\")[-1] + "__standarized_output", "w") as file:
root.indentation = 0
root.print_tree_to_file(file)
ctrlStructGen = controlStructure.ControlStructureGenerator()
ctr_structures = ctrlStructGen.generate_control_structures(root)
# ctrlStructGen.print_ctrl_structs()
cseMachine = CSEMachine(ctr_structures, input_path)
result = cseMachine.execute()
# print("\n")