Files
Nassi-Shneiderman-Diagramm-…/draw/Iinstruction.py
2021-04-26 11:50:42 +02:00

228 lines
7.3 KiB
Python

"""Interafce for all instruction types"""
__author__ ="Weckyy702"
from abc import ABCMeta, abstractmethod
from typing import Tuple, List, Optional
from . import code_to_image as cti
class instruction(metaclass=ABCMeta):
def __init__(self, instruction_text: str) -> None:
self.instruction_text = instruction_text
@abstractmethod
def convert_to_image(self, x: int, y: int, width: int) -> int:
pass
@abstractmethod
def get_block_width(self):
return self.get_text_width()
@abstractmethod
def get_block_height(self):
return self.get_text_height()
def get_text_width(self):
return cti.get_text_size(self.instruction_text)[0]
def get_text_height(self):
return cti.get_text_size(self.instruction_text)[1]
class generic_instruction(instruction):
def __init__(self, instruction_text: str) -> None:
super().__init__(instruction_text)
def convert_to_image(self, x: int, y: int, width: int) -> int:
height = self.get_block_height()
return cti.draw_generic_instruction(self.instruction_text, x, y, width, height)
def get_block_width(self):
return super().get_block_width()
def get_block_height(self):
return super().get_block_height()
def __str__(self) -> str:
return self.instruction_text
class if_instruction(instruction):
def __init__(self, instruction_text: str, true_case: List[instruction], false_case: Optional[List[instruction]]) -> None:
super().__init__(instruction_text)
self.true_case = true_case
self.false_case = false_case
def convert_to_image(self, x: int, y: int, width: int) -> int:
true_width = self.get_true_width()
block_height = self.get_block_height()
true_x, true_y, false_x, false_y = cti.draw_if_statement(self.instruction_text, x, y, true_width, width, block_height)
self.draw_children(true_x, true_y, true_width, false_x, false_y, width-true_width)
return y + self.get_block_height()
def draw_children(self, true_x:int, true_y:int, true_width:int, false_x:int, false_y:int, false_width:int):
for instruction in self.true_case:
true_y = instruction.convert_to_image(true_x, true_y, true_width)
if self.false_case:
for instruction in self.false_case:
false_y = instruction.convert_to_image(false_x, false_y, false_width)
def get_block_width(self) -> int:
text_width = self.get_text_width()
true_width = self.get_true_width()
false_width = self.get_false_width()
return max(text_width, true_width + false_width)
def get_block_height(self):
text_height = self.get_text_height()
true_height = self.get_true_height()
false_height = self.get_false_height()
return text_height + max(true_height, false_height)
def get_text_width(self):
return int(super().get_text_width() * 1.5)
def get_true_width(self) -> int:
width = 200
for instruction in self.true_case:
width = max(width, instruction.get_block_width())
return width
def get_false_width(self) -> int:
width = 200
if self.false_case:
for instruction in self.false_case:
width = max(width, instruction.get_block_width())
return width
def get_true_height(self) -> int:
height = 0
for instruction in self.true_case:
height += instruction.get_block_height()
return height
def get_false_height(self) -> int:
height = 0
if self.false_case:
for instruction in self.false_case:
height += instruction.get_block_height()
return height
def __str__(self) -> str:
res = "if\n"
for instruction in self.true_case:
res += '\t' + str(instruction) + '\n'
if self.false_case:
res += "else\n"
for instruction in self.false_case:
res += '\t' + str(instruction) + '\n'
return res
class while_instruction_front(instruction):
def __init__(self, condition_text: str, child_instructions: List[instruction]) -> None:
super().__init__(condition_text)
self.children = child_instructions
def convert_to_image(self, x: int, y: int, width: int) -> int:
block_height = self.get_block_height()
children_x, children_y, children_width = cti.draw_while_loop_front(self.instruction_text, x, y, width, block_height)
self.draw_children(children_x, children_y, children_width)
return y + block_height
def draw_children(self, children_x:int, children_y:int, children_width:int):
for instruction in self.children:
children_y = instruction.convert_to_image(children_x, children_y, children_width)
def get_block_width(self):
width = self.get_text_width()
for instruction in self.children:
width = max(width, instruction.get_block_width() / (1 - cti.BLOCK_OFFSET_RATIO)) #instructions inside a bock take up more space, so compensate for that
return int(width)
def get_block_height(self):
height = self.get_text_height()
for instruction in self.children:
height += instruction.get_block_height()
return height
def __str__(self) -> str:
res = "while\n"
for instruction in self.children:
res += '\t' + str(instruction) + '\n'
return res
class while_instruction_back(while_instruction_front):
def __init__(self, condition_text: str, child_instructions: List[instruction]) -> None:
super().__init__(condition_text, child_instructions)
def convert_to_image(self, x: int, y: int, width: int) -> int:
block_height = self.get_block_height()
children_x, children_y, children_width = cti.draw_while_loop_back(self.instruction_text, x, y, width, block_height)
self.draw_children(children_x, children_y, children_width)
return y + block_height
def __str__(self) -> str:
res = "do\n"
for instruction in self.children:
res += '\t' + str(instruction) + '\n'
res += "while"
return res
class for_instruction(while_instruction_front):
def __init__(self, variable_text: str, condition_text: str, child_instruction: List[instruction]) -> None:
super().__init__(condition_text, child_instruction)
self.variable_instruction = generic_instruction(variable_text)
def convert_to_image(self, x: int, y: int, width: int) -> int:
block_height = super().get_block_height()
y = self.variable_instruction.convert_to_image(x, y, width)
children_x, children_y, children_width = cti.draw_while_loop_front(self.instruction_text, x, y, width, block_height)
self.draw_children(children_x, children_y, children_width)
return y + block_height
def get_block_width(self):
return max(super().get_block_width(), self.variable_instruction.get_block_width())
def get_block_height(self):
return super().get_block_height() + self.variable_instruction.get_block_height()
def __str__(self) -> str:
res = str(self.variable_instruction) + '\n'
res += "for\n"
for instruction in self.children:
res += "\t" + str(instruction) + '\n'
return res