PSSAI_Team/JobShopScheduling
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adjust code style to follow PEP8

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This commit is contained in:
Trolli Schmittlauch 2017-06-30 00:51:50 +02:00
parent 3edd920b0d
commit 40eaca47ae
3 changed files with 68 additions and 32 deletions
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45
src/Parser/__init__.py
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@ -1,4 +1,4 @@
from typing import List, Tuple, Sequence, Optional, Union, Any
from typing import List, Tuple
import arpeggio
from itertools import chain
@ -7,7 +7,8 @@ __all__ = ["jobshop1_parser", "jobshop2_parser"]
grammar = """
# starting point for jobshop1 input file
job_shop1 = skip_preface
# eat away lines of preface, until first problem_instance is encountered; then the list of instances start
# eat away lines of preface, until first problem_instance is
# encountered; then the list of instances start
skip_preface = (!problem_instance r"[^\n]+" skip_preface) / (eol skip_preface) / instance_list
instance_list = problem_instance (sep_line trim_ws eol problem_instance eol?)* eof_sep
problem_instance = trim_ws "instance" ' ' instance_name trim_ws eol trim_ws eol sep_line description eol problem_data
@ -31,18 +32,23 @@ grammar = """
machine = nonneg_num
duration = nonneg_num
# task data for 1 job
job_data = ' '* machine ' '+ duration (' '+ machine ' '+ duration)* trim_ws eol
job_data = ' '* machine ' '+ duration (' '+ machine ' '+ duration)* trim_ws eol
"""
class ParseError(Exception):
"""To be thrown when parsing goes wrong"""
def __init__(self, message: str) -> None:
self.message = message
class JobShopProblem(list):
def __init__(self, jobs: int, machines: int, problem_data: List[List[Tuple[int, int]]], name: str = 'unnamed', description: str = '') -> None:
def __init__(
self, jobs: int, machines: int,
problem_data: List[List[Tuple[int, int]]],
name: str = 'unnamed', description: str = '') -> None:
# check plausibility of input
if len(problem_data) != jobs:
raise ParseError("Given number of jobs for problem \"{}\" differs from actual job data.".format(name))
@ -58,47 +64,52 @@ class JobShopProblem(list):
def __str__(self) -> str:
return "JobShopProblem " + str(self.name)
class JobShopVisitor(arpeggio.PTNodeVisitor):
"""contains visitor functions needed for both jobshop1 (list of instances)
and jobshop2 (single instance without name & description) input data"""
def visit_nonneg_num(self, node: arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
def visit_nonneg_num(
self, node: arpeggio.ParseTreeNode,
children: arpeggio.SemanticActionResults) -> int:
if self.debug:
print("Converting non-negative integer", node.value)
return int(node.value)
def visit_machine(self, node:arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
def visit_machine(self, node: arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
return int(node.value)
def visit_duration(self, node:arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
def visit_duration(self, node: arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
return int(node.value)
def visit_num_machines(self, node:arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
def visit_num_machines(self, node: arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
return int(node.value)
def visit_num_jobs(self, node:arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
def visit_num_jobs(self, node: arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> int:
return int(node.value)
def visit_job_data(self, node:arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> List[Tuple[int, int]]:
def visit_job_data(self, node: arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> List[Tuple[int, int]]:
if self.debug:
print("Job data:\nnode:", type(node), "children:", children)
job_numbers = list(filter(lambda x: type(x) is int, children))
# job data needs to consist out of pairs of numbers
if len(job_numbers) % 2 ==1:
if len(job_numbers) % 2 == 1:
raise ParseError("Odd number of numbers in job data")
# returns list of (duration, machine) tuples
return list(zip(job_numbers[1::2], job_numbers[0::2])) # [::2] returns only every second element of the list
# [::2] returns only every second element of the list
return list(zip(job_numbers[1::2], job_numbers[0::2]))
def visit_problem_data(self, node: arpeggio.ParseTreeNode, children: arpeggio.SemanticActionResults) -> JobShopProblem:
def visit_problem_data(
self, node: arpeggio.ParseTreeNode,
children: arpeggio.SemanticActionResults) -> JobShopProblem:
if self.debug:
print("problem_data\nchildren:", children)
# filter out newlines or other strings
cleaned_data = list(filter(lambda x: type(x) is not str, children))
problem_data: List[List[Tuple[int, int]]] = [ cleaned_data[i] for i in range(2, len(cleaned_data))]
problem_data: List[List[Tuple[int, int]]] = [
cleaned_data[i] for i in range(2, len(cleaned_data))]
problem = JobShopProblem(children[0], children[1], problem_data)
if self.debug:
print("\nreturning a", type(problem), "\n")
print("problem_data:", problem_data)
return problem