# Token types INTEGER, PLUS, MINUS, EOF = 'INTEGER', 'PLUS', 'MINUS', 'EOF'
def advance(self): self.pos += 1 if self.pos > len(self.text) - 1: self.current_char = None else: self.current_char = self.text[self.pos]
while token.type != EOF: print(token) token = lexer.get_next_token() To get more information you may have to download and read the book with detailed explnation and examples
Please let me know if you need any further assistance or have any specific requests.
def skip_whitespace(self): while self.current_char is not None and self.current_char.isspace(): self.advance()
if self.current_char == '+': self.advance() return Token(PLUS, '+')
# Lexer class class Lexer: def __init__(self, text): self.text = text self.pos = 0 self.current_char = self.text[self.pos]
# Example usage lexer = Lexer('2 + 3') token = lexer.get_next_token()
# Token class class Token: def __init__(self, type, value): self.type = type self.value = value
import re
# Token types INTEGER, PLUS, MINUS, EOF = 'INTEGER', 'PLUS', 'MINUS', 'EOF'
def advance(self): self.pos += 1 if self.pos > len(self.text) - 1: self.current_char = None else: self.current_char = self.text[self.pos]
while token.type != EOF: print(token) token = lexer.get_next_token() To get more information you may have to download and read the book with detailed explnation and examples compiler design book of aa puntambekar pdf 71 2021
Please let me know if you need any further assistance or have any specific requests.
def skip_whitespace(self): while self.current_char is not None and self.current_char.isspace(): self.advance() # Token types INTEGER, PLUS, MINUS, EOF =
if self.current_char == '+': self.advance() return Token(PLUS, '+')
# Lexer class class Lexer: def __init__(self, text): self.text = text self.pos = 0 self.current_char = self.text[self.pos] # Token types INTEGER
# Example usage lexer = Lexer('2 + 3') token = lexer.get_next_token()
# Token class class Token: def __init__(self, type, value): self.type = type self.value = value
import re
