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language.py
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language.py
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from FA import isNumber, isStringValid
STR_TO_GRAMMAR = {
# For Literals
"\n": "ENTER",
";" : ";",
"(": "(",
")": ")",
"{": "{",
"}": "}",
"[": "[",
"]": "]",
",": ",",
".": ".",
":": ":",
"=": "=",
# Loop Control
"do": "DO",
"while":"WHILE",
"break": "BREAK",
"continue": "CONTINUE",
"for": "FOR",
"in": "IN",
"of": "OF",
# Delete
"delete" : "DELETE",
# Conditional
"switch" : "SWITCH",
"case" : "CASE",
"default" : "DEFAULT",
"if" : "IF",
"else" : "ELSE",
# Functions
"return": "RETURN",
"async": "ASYNC",
"await": "AWAIT",
"function": "FUNCTION_C",
# Variables Definition
"var": "VAR",
"let": "LET",
"const": "CONST",
# Try Catch / Throw
"try": "TRY",
"catch": "CATCH",
"finally": "FINALLY",
"throw": "THROW",
# DATA TYPES
"true": "TRUE",
"false": "FALSE",
"null": "NULL",
# SPECIAL VALUES
"@CMT_SINGLE": "COMMENT_STMT",
"@CMT_MULTI": "COMMENT_STMT",
"@EXP": "EXPRESSION",
"@DEFS": "DEFS",
"@VAR": "VAR_NAME",
"@FCALL": "FUNCTION_CALL",
"" : "EPSILON",
"@NUM": "NUMBER",
"@STR": "STRING",
}
def rearrange_string(string):
#I.S. sebuah string
#F.S. string yang sudah lebih rapih spacingnya
NEED_SPACING = [
"(", ")", "{", "}", "[", "]", ",", ".", ":", "=", "+", "-", "*", "/", "%", "^", "<", ">", "<=", ">=", "==",
"!=", "&&", "||", "!", "===", "!==", ">>", "<<", ">>>", "&", "|", "~", "&&=", "||=", "&=", "|=",
"^=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=", "^=", "**", "**=", ";", "for", "in", "of", "while",
"do", "break", "continue", "return", "async", "await", "function", "var", "let", "const", "try", "catch",
"finally", "throw", "true", "false", "null", "\n"
]
DONT_SPACE = [
"//", "/*", "*/"
]
i = 0
while i < len(string) - 1:
if string[i] in NEED_SPACING:
j = i
while string[i:j+1] in NEED_SPACING:
j += 1
if not string[i:j+1] in DONT_SPACE:
string = string[:i] + " " + string[i:j] + " " + string[j:]
i = j + 2
else:
i = j + 1
else:
i += 1
return string
def remove_empty_str(list_of_str):
# I.S. list of string
# F.S. list of string yang sudah tidak ada string kosongnya
i = 0
while i < len(list_of_str):
if list_of_str[i] == "":
list_of_str.remove(list_of_str[i])
else:
i += 1
return list_of_str
def get_variable_from_defs(string):
# I.S. string yang berisi definisi variabel
# F.S. list of string yang berisi nama variabel
list_of_variable = []
string = string.split(" ")
string = remove_empty_str(string)
for i in range(len(string)):
if string[i] == "=":
if string[i-1] not in list_of_variable:
list_of_variable.append(string[i-1])
if string[i] == ",":
if string[i+1] not in list_of_variable:
list_of_variable.append(string[i+1])
return list_of_variable
def handle_special_value(string):
# I.S. string
# F.S. string yang special valuenya sudah dihandle
# special Value: COMMENT dan EXPRESSION
# mengembalikan string yang sudah dihandle dan list of extracted special value and variable
operator = [
"+", "-", "*", "/", "%", "^", "<", ">", "<=", ">=", "==", "!=", "&&", "||", "!", "===", "!==", ">>", "<<", ">>>", "&", "|", "~",
"&&=", "||=", "&=", "|=", "^=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=", "^=", "**", "**=", "="
]
object_operator = ["."]
defs = ["let", "var", "const"]
exp_start = ["(", "[", "{", "true", "false", "null", "function", "async", "await", "try", "throw", "for", "while", "do", "if", "switch", "return", "break", "continue", ";", "f, :", "\n"]
exp_end = [")", "]", "}", ";", "else", "catch", "finally", "in", "of", "for", "while", "do", "if", "switch", "return", "break", "continue", ":", "\n"]
def_end = [";", "\n", ""]
i = 0
list_of_expression = []
list_of_variable = []
while i <= len(string) - 1:
# Handle Comment
if string[i] == "/" and string[i+1] == "/":
j = i + 2
while not string[j] == "\n" and j < len(string) - 1:
j += 1
string = string[:i] + " @CMT_SINGLE " + string[j-1:]
i = j - 1
elif string[i] == "/" and string[i+1] == "*":
j = i + 2
while not (string[j] == "*" and string[j+1] == "/" and j < len(string) - 1):
j += 1
string = string[:i] + " @CMT_MULTI " + string[j+2:]
i = j -1
else:
if string[i] != " ":
current_str = string[i]
j = i + 1
while j < len(string) and string[j] != " ":
current_str += string[j]
j += 1
# Handling Variables Definition
if current_str in defs:
while string[j] not in def_end and j < len(string) - 1:
j += 1
list_of_variable += get_variable_from_defs(string[i:j])
string = string[:i] + " @DEFS " + string[j:]
i = i + 6
# Handling Expression
elif current_str in operator:
j_e = j
i_e = i - 1
successorWord = ""
while successorWord not in exp_end and j_e <= len(string) - 1:
successorWord = ""
j_s = j_e
while j_s < len(string) and string[j_s] == " ":
j_s += 1
j_e += 1
while j_e < len(string) and string[j_e] != " ":
successorWord += string[j_e]
j_e += 1
predecessorWord = ""
while predecessorWord not in exp_start and i_e >= 0:
predecessorWord = ""
i_s = i_e
while i_s >= 0 and string[i_s] == " " and i_s >= 0:
i_s -= 1
i_e -= 1
while i_e >= 0 and string[i_e] != " " and i_e > 0:
predecessorWord = string[i_e] + predecessorWord
i_e -= 1
list_of_expression.append(string[i_e+1:j_e])
string = string[:i_e+3] + " @EXP " + string[j_e-1:]
i = i_e + 9
else:
i = j
else:
while string[i] == " " and i < len(string):
i += 1
i = 0
while i <= len(string) - 1:
if string[i] != " ":
current_str = string[i]
j = i + 1
while j < len(string) and string[j] != " ":
current_str += string[j]
j += 1
# Handling Variables
if current_str not in STR_TO_GRAMMAR.keys() and not current_str.startswith("@"):
if current_str.startswith("\""):
while not current_str.endswith("\"") and j < len(string) - 1:
current_str += string[j]
j += 1
if isNumber(current_str):
string = string[:i] + " @NUM " + string[j:]
elif isStringValid(current_str.replace(" ", "")):
string = string[:i] + " @STR " + string[j:]
else:
list_of_variable.append(current_str)
string = string[:i] + " @VAR " + string[j:]
i = i + 6
else:
i = j
else:
while string[i] == " ":
i += 1
if i == len(string):
break
return string, list_of_expression, list_of_variable
def string_to_grammar(string):
converted_str = []
expressions = []
variables = []
init_str = rearrange_string(string)
init_str, expressions, variables = handle_special_value(init_str)
init_str = init_str.split(" ")
init_str = remove_empty_str(init_str)
for i in range(len(init_str)):
if len(init_str[i]) > 1 and init_str[i].endswith("\n"):
init_str[i] = init_str[i][:-1]
if init_str[i] in STR_TO_GRAMMAR.keys():
converted_str.append(STR_TO_GRAMMAR[init_str[i]])
converted_str.append(STR_TO_GRAMMAR["\n"])
continue
if init_str[i] in STR_TO_GRAMMAR.keys():
converted_str.append(STR_TO_GRAMMAR[init_str[i]])
else:
converted_str.append(init_str[i])
# print(converted_str)
return converted_str, expressions, variables