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commenting the grammar

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Trolli Schmittlauch 2017-06-25 20:40:50 +02:00
parent c62e012c97
commit 28eedd4579
1 changed files with 8 additions and 2 deletions
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10
src/JobShopParser/common.py
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@ -1,23 +1,29 @@
grammar = """
# starting point for jobshop1 input file
job_shop1 = skip_preface
# eat away lines of preface, until first problem_instance is encountered
# 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
description = r"[^\n]*"
instance_name = r"\w+"
sep_line = trim_ws plus_line trim_ws eol
# lines out of multiple + signs
plus_line = r"\+\+\++"
# EOF is a builtin rule matching end of file
eof_sep = trim_ws plus_line " EOF " plus_line trim_ws eol* EOF
# entry point for jobshop2 input files
job_shop2 = problem_data EOF
problem_data = trim_ws num_jobs ' ' num_machines eol job_data+
# used for skipping arbitrary number of non-breaking whitespace
trim_ws = r'[ \t]*'
# git may change line-endings on windows, so we have to match on both
eol = "\n" / "\r\n"
nonneg_num = r'\d+'
num_jobs = nonneg_num
num_machines = nonneg_num
machine = nonneg_num
duration = nonneg_num
# task data for 1 job
job_data = ' '* machine ' '+ duration (' '+ machine ' '+ duration)* trim_ws eol
"""