plexx-dev/Nassi-Shneiderman-Diagramm-Generator
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

further improvements to the interpreter WIP

Browse Source
This commit is contained in:
weckyy702
2020-12-26 21:12:34 +01:00
parent 1df4f18a5a
commit de7a71b15b
3 changed files with 105 additions and 80 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
interpreter/interpret_source.py
View File

@@ -6,8 +6,9 @@ from typing import List, Text, Tuple
from draw.Iinstruction import *
COMMENT_REGEX = r"""^//|^#|^COMMENT|^--"""
REMOVE_KEYWORDS = [' ', "public", "private", "void"]
WHILE_TAG = "solange " #german for 'while'. Change this depending on your language
REMOVE_KEYWORDS = (' ', "public", "private", "void")
REPLACE = dict((re.escape(k), '') for k in REMOVE_KEYWORDS)
remove_pattern = re.compile("|".join(REPLACE.keys()))
@@ -42,21 +43,25 @@ def load_src(filepath: str) -> List[str]:
return lines
def get_scope_start_offset(src: List[str], start_idx: int) -> int:
def get_next_occurence_of(src: List[str], start_idx:int, tag:str) -> int:
i = start_idx
while i < len(src):
line = src[i]
if line.__contains__("{"):
return i - start_idx + 1
if src[i].__contains__(tag):
return i
i += 1
def get_scope_start_offset(src: List[str], start_idx: int) -> int:
i = get_next_occurence_of(src, start_idx, '{')
if i != len(src):
return i + 1
raise ScopeNotFoundException("Unable to find scope start. Is the program ill-formed?")
def get_instructions_in_scope(src: List[str], start_idx: int = 0) -> Tuple[List[Iinstruction], int]:
outer_scope: List[Iinstruction] = []
i = start_idx
while i < len(src):
line = src[i]
logging.debug(line)
try:
if line.__contains__('}'): #We exited this scope, return it
return outer_scope, i
@@ -82,10 +87,16 @@ def get_instructions_in_scope(src: List[str], start_idx: int = 0) -> Tuple[List[
true_instructions, i = get_instructions_in_scope(src, i+brace_offset)
false_instructions = None
if src[i].__contains__("else"): #if there is an else statement, check it
#if there is an else statement, check it
if src[i].__contains__("else"):
logging.debug("found else construct in line: %i", i+1)
brace_offset = get_scope_start_offset(src, i)
false_instructions, i = get_instructions_in_scope(src, i+2)
false_instructions, i = get_instructions_in_scope(src, i+brace_offset)
elif src[i+1].__contains__("else"):
logging.debug("found else construct in line: %i", i+2)
brace_offset = get_scope_start_offset(src, i+1)
false_instructions, i = get_instructions_in_scope(src, i+1+brace_offset)
outer_scope.append(if_instruction(instruction_txt, true_instructions, false_instructions))
@@ -105,7 +116,7 @@ def get_instructions_in_scope(src: List[str], start_idx: int = 0) -> Tuple[List[
logging.debug("Found generic instruction in line: %i", i+1)
outer_scope.append(generic_instruction(line))
except:
logging.error("Encountered error in line: %i", i)
logging.error("Encountered error in line: %i", i+1)
raise # rethrow
i += 1
return outer_scope, 0