def program():
lines = lexical.scanner()
results = [] # to store the information of expressions of statement
for line in lines:
dir = for_statement(line)
if dir:
results.append(dir)
print("<-------------- Structure of FOR Statement -------------->")
print("*************** Expression Tree of FROM ***************")
dir["FROM"].traverse()
print("*************** Expression Tree of TO ***************")
dir["TO"].traverse()
print("*************** Expression Tree of STEP ***************")
dir["STEP"].traverse()
print("*************** Expression Tree of X ***************")
dir["X"].traverse()
print("*************** Expression Tree of Y ***************")
dir["Y"].traverse()
continue
dir = scale_statement(line)
if dir:
results.append(dir)
print(
"<-------------- Structure of SCALE Statement -------------->")
print("*************** Expression Tree of X ***************")
dir["X"].traverse()
print("*************** Expression Tree of Y ***************")
dir["Y"].traverse()
continue
dir = rot_statement(line)
if dir:
results.append(dir)
print("<-------------- Structure of ROT Statement -------------->")
print("*************** Expression Tree of ANGLE ***************")
dir["ANGLE"].traverse()
continue
dir = origin_statement(line)
if dir:
results.append(dir)
print(
"<-------------- Structure of ORIGIN Statement -------------->"
)
print("*************** Expression Tree of X ***************")
dir["X"].traverse()
print("*************** Expression Tree of Y ***************")
dir["Y"].traverse()
continue
# if the statement is not matched, then error
raise exceptions.SyntaxNotMatched("Syntax not matched")
return {"lines": lines, "results": results}
ir = node.id if node.id else node.data
print(node.id)
while node.data != ";":
node = node.get_next()
if node.id:
ir += " " + node.id
elif node.data:
ir += " " + node.data
return ir
if __name__ == "__main__":
with open("testfiles/testfile_1.txt", 'r') as test:
code = test.read()
scan = scanner(code)
scan.lexical()
tokens = scan.tokens
for token in tokens:
print(token)
print()
parsing = parser(tokens, "grammar2.txt")
print("LL Grammar")
for i in parsing.grammar:
for j in parsing.grammar[i]:
if j[0] == '':
print(i, '->', "''")
else:
print(i, '->', ' '.join(j))