univer-6th-semester/mathlogic
Code Actions Releases 5

Семантические действия

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This commit is contained in:
Артём Тищенко
2025-05-21 19:34:08 +03:00
parent 4448c675dd
commit fb67acc55e
2 changed files with 57 additions and 24 deletions
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45
lab5/programm/main.py
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@@ -1,11 +1,30 @@
from grammar import Grammar
from grammar import ActionsListWithAppliedCount, Grammar
def load_grammar(filename: str = "grammar.txt") -> Grammar | None:
try:
# #b - 2 * #a + 3 * #c
actions = [
lambda rule_number, applied_count, _: print(
f"Rule #{rule_number} (applied x{applied_count} times): iconst_1"
),
lambda rule_number, applied_count, _: print(
f"Rule #{rule_number} (applied x{applied_count} times): iconst_2 isub"
),
lambda rule_number, applied_count, _: print(
f"Rule #{rule_number} (applied x{applied_count} times): iconst_1 iadd"
),
lambda rule_number, applied_count, _: print(
f"Rule #{rule_number} (applied x{applied_count} times): iconst_1 iadd"
),
lambda rule_number, applied_count, _: print(
f"Rule #{rule_number} (applied x{applied_count} times): iconst_3 iadd"
),
]
with open(filename, "r", encoding="utf-8") as file:
text = file.read()
grammar = Grammar(text)
grammar = Grammar(text, ActionsListWithAppliedCount(actions))
# Сохраняем информацию о грамматике в файлы
with open("grammar_rules.txt", "w", encoding="utf-8") as output_file:
@@ -40,7 +59,6 @@ def load_grammar(filename: str = "grammar.txt") -> Grammar | None:
def tokenize_string(input_string: str) -> list[str]:
input_string = input_string.replace(",", " , ").replace(".", " . ")
return input_string.split()
@@ -52,16 +70,7 @@ def check_string(grammar: Grammar | None, input_string: str) -> None:
print(f"Проверка строки: '{input_string}'")
try:
input_tokens = tokenize_string(input_string)
if not input_tokens:
parse_result = grammar.analyze(input_tokens)
else:
try:
input_tokens[0] = input_tokens[0][0].lower() + input_tokens[0][1:]
parse_result = grammar.analyze(input_tokens)
except ValueError as e:
input_tokens[0] = input_tokens[0][0].upper() + input_tokens[0][1:]
parse_result = grammar.analyze(input_tokens)
parse_result = grammar.analyze(input_tokens)
print(f"Результат: Строка соответствует грамматике")
print(f"Применённые правила: {parse_result}")
@@ -86,15 +95,6 @@ def check_string(grammar: Grammar | None, input_string: str) -> None:
print(f"Произошла ошибка при анализе: {e}")
def post_process_string(string: str) -> str:
if string:
string = string[0].upper() + string[1:]
string = string.replace(" ,", ",")
string = string.replace(" .", ".")
string = string.replace(",.", ".")
return string
def generate_string(grammar: Grammar | None) -> None:
if not grammar:
print("Ошибка: Грамматика не загружена")
@@ -103,7 +103,6 @@ def generate_string(grammar: Grammar | None) -> None:
try:
terminals, rules = grammar.generate()
generated_string = " ".join(terminals)
generated_string = post_process_string(generated_string)
print(f"Сгенерированная строка: {generated_string}")
print(f"Применённые правила: {rules}")