def expr():
t = term()
if cFunc.s == PLUS:
cFunc.getSym()
t2 = term()
print("sum: " + str(t) + ' ' + str(t2))
if cFunc.s == MINUS:
cFunc.getSym()
t2 = term()
print("min: " + str(t) + ' ' + str(t2))
return t
def term():
t = factor()
if cFunc.s == STAR:
cFunc.getSym()
t2 = factor()
print("mul: " + str(t) + ' ' + str(t2))
if cFunc.s == SLASH:
cFunc.getSym()
t2 = factor()
print("div: " + str(t) + ' ' + str(t2))
return t
def returnStmt():
global commset
code = ''
if cFunc.s == RETURN:
cFunc.getSym()
code = code + 'ret: e' + str(commset)
print(code)
print('e' + str(commset) + ':')
expr()
print('end e' + str(commset))
commset = commset + 1
def reassign():
global commset
if cFunc.s == IDENT:
i = cFunc.val
a = symtab.find(i)
if a == -1:
raise (Exception)
cFunc.getSym()
if cFunc.s == EQ:
cFunc.getSym()
print('set: ' + str(i) + ' e' + str(commset))
print('e' + str(commset) + ':')
expr()
print('end e' + str(commset))
commset = commset + 1
def default():
global cases
if cFunc.s == DEFAULT:
c = cases
cases = cases + 1
cFunc.getSym()
if cFunc.s == COLON:
print('c' + str(c) + ': s s')
cFunc.getSym()
i = cFunc.index
stmt()
while i != cFunc.index:
i = cFunc.index
stmt()
print('end c' + str(c))
def booleanStmt():
global boolean, maxbool
print('b' + str(boolean) + ':')
boolTerm()
if cFunc.s == OR:
print('end b' + str(boolean))
boolean = boolean + 1
if boolean > maxbool:
maxbool = boolean
cFunc.getSym()
booleanStmt()
else:
print('end b' + str(boolean))
if boolean > maxbool:
maxbool = boolean + 1
def factor():
if cFunc.s == NUM:
val = cFunc.val
print('get: ' + str(val))
cFunc.getSym()
return val
if cFunc.s == IDENT:
val = cFunc.val
print('get: ' + str(val))
cFunc.getSym()
return val
elif cFunc.s == LPAREN:
cFunc.getSym()
e = expr()
if cFunc.s == RPAREN:
cFunc.getSym()
return e
def simplesetstmt():
if cFunc.s == IDENT:
var = cFunc.val
cFunc.getSym()
if cFunc.s == EQ:
cFunc.getSym()
print('set: ' + str(var) + ' ' + str(expr()))
if cFunc.s == SEMICOLON:
cFunc.getSym()
else:
expr()
def simpleloadstmt():
if cFunc.s == IDENT:
var = cFunc.val
cFunc.getSym()
if cFunc.s == EQ:
cFunc.getSym()
e = expr()
symtab.newObj((var, e))
print('load: ' + var + ' ' + str(e))
if cFunc.s == SEMICOLON:
cFunc.getSym()
else:
expr()
def stmt():
global value
i = cFunc.index
compstmt()
if i == cFunc.index:
returnStmt()
if cFunc.s == SEMICOLON:
cFunc.getSym()
if i == cFunc.index:
if cFunc.s == INT: #replace with entire type set
cFunc.getSym()
simpleloadstmt()
elif cFunc.s == FLOAT: #replace with entire type set
cFunc.getSym()
simpleloadstmt()
elif cFunc.s == DOUBLE: #replace with entire type set
cFunc.getSym()
simpleloadstmt()
if i == cFunc.index:
simplesetstmt()
def case():
global cases
if cFunc.s == CASE:
c = cases
cases = cases + 1
cFunc.getSym()
if cFunc.s == IDENT or cFunc.s == NUM:
print('c' + str(c) + ': s ' + str(cFunc.val))
cFunc.getSym()
if cFunc.s == COLON:
cFunc.getSym()
i = cFunc.index
stmt()
while i != cFunc.index:
i = cFunc.index
stmt()
brkstmt()
print('end c' + str(c))
def boolFact():
global boolean, maxbool
comparison()
if cFunc.s == MINUS:
cFunc.getSym()
boolFact()
elif cFunc.s == LPAREN:
goto = boolean
boolean = boolean + 1
if boolean > maxbool:
maxbool = boolean
cFunc.getSym()
booleanStmt()
if cFunc.s == RPAREN:
print('end b' + str(boolean))
cFunc.getSym()
boolean = goto
print('end b' + str(boolean))
def boolTerm():
boolFact()
if cFunc.s == AND:
cFunc.getSym()
boolTerm()
def comparison():
if cFunc.s == IDENT:
v1 = cFunc.val
cFunc.getSym()
if cFunc.s == EQUAL:
cFunc.getSym()
if cFunc.s == IDENT:
print('EQ: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('EQ: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == GT:
cFunc.getSym()
if cFunc.s == IDENT:
print('GT: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('GT: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == LT:
cFunc.getSym()
if cFunc.s == IDENT:
print('LT: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('LT: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == GTE:
cFunc.getSym()
if cFunc.s == IDENT:
print('GTE: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('GTE: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == LTE:
cFunc.getSym()
if cFunc.s == IDENT:
print('LTE: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('LTE: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
if cFunc.s == NUM:
v1 = cFunc.val
cFunc.getSym()
if cFunc.s == EQ:
cFunc.getSym()
if cFunc.s == EQ:
cFunc.getSym()
if cFunc.s == IDENT:
print('EQ: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('EQ: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == GT:
cFunc.getSym()
if cFunc.s == IDENT:
print('GT: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('GT: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == LT:
cFunc.getSym()
if cFunc.s == IDENT:
print('LT: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('LT: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == GTE:
cFunc.getSym()
if cFunc.s == IDENT:
print('GTE: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('GTE: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == LTE:
cFunc.getSym()
if cFunc.s == IDENT:
print('LTE: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
elif cFunc.s == NUM:
print('LTE: ' + str(v1) + ' ' + str(cFunc.val))
cFunc.getSym()
def importStmt():
if cFunc.s == HASH:
cFunc.getSym()
if cFunc.s == INCLUDE:
cFunc.getSym()
code = 'fetch: '
if cFunc.s == LT:
cFunc.getSym()
if cFunc.s == IDENT:
code = code + cFunc.val
cFunc.getSym()
if cFunc.s == PERIOD:
code = code + '.'
cFunc.getSym()
if cFunc.s == IDENT:
code = code + cFunc.val
cFunc.getSym()
if cFunc.s == GT:
cFunc.getSym()
print(code)
code = ''
return
def program(): #(import)* type main(){ (stmt)* returnStmt() }
i = -1
while i != cFunc.index:
i = cFunc.index
importStmt()
if cFunc.s in {INT, FLOAT, BOOL, CHAR}:
cFunc.getSym()
if cFunc.s == MAIN:
cFunc.getSym()
if cFunc.s == LPAREN:
cFunc.getSym()
if cFunc.s == RPAREN:
cFunc.getSym()
if cFunc.s == LCURL:
print('main:')
print()
cFunc.getSym()
i = -1
while i != cFunc.index:
i = cFunc.index
stmt()
returnStmt()
if cFunc.s == RCURL:
cFunc.getSym()
return
def compstmt():
global loop, boolean, maxbool, maxloop, conditional
if cFunc.s == IF: #FIX THIS
condid = conditional
conditional = conditional + 1
cFunc.getSym()
if cFunc.s == LPAREN:
cFunc.getSym()
print('cond' + str(condid) + 'a:')
booleanStmt()
boolean = maxbool + 1
if cFunc.s == RPAREN:
cFunc.getSym()
if cFunc.s == LCURL:
cFunc.getSym()
i = -1
while i != cFunc.index:
i = cFunc.index
stmt()
if cFunc.s == RCURL:
cFunc.getSym()
print('end cond' + str(condid) + 'a')
if cFunc.s == ELSE:
print('fls: cond' + str(condid) + 'b')
print('cond' + str(condid) + 'b:')
cFunc.getSym()
if cFunc.s == LCURL:
cFunc.getSym()
i = -1
while i != cFunc.index:
i = cFunc.index
stmt()
if cFunc.s == RCURL:
cFunc.getSym()
print('end cond' + str(condid) + 'b')
elif cFunc.s == SWITCH: #Finish This
cFunc.getSym()
if cFunc.s == LPAREN:
cFunc.getSym()
if cFunc.s == IDENT:
print('set: s ' + cFunc.val)
cFunc.getSym()
if cFunc.s == RPAREN:
cFunc.getSym()
if cFunc.s == LCURL:
cFunc.getSym()
i = -1
while i != cFunc.index:
i = cFunc.index
case()
i = cFunc.index
default()
if i != cFunc.index:
if cFunc.s == RCURL:
cFunc.getSym()
return
elif cFunc.s == WHILE:
loopid = loop
loop = loop + 1
cFunc.getSym()
print('iter' + str(loopid) + ':')
if cFunc.s == LPAREN:
cFunc.getSym()
i = cFunc.index
print('while:')
booleanStmt()
if i != cFunc.index:
if cFunc.s == RPAREN:
cFunc.getSym()
if cFunc.s == LCURL:
cFunc.getSym()
i = -1
while i != cFunc.index:
i = cFunc.index
stmt()
if cFunc.s == RCURL:
cFunc.getSym()
print('jump: iter' + str(loopid))
return
elif cFunc.s == DO:
loopid = loop
loop = loop + 1
cFunc.getSym()
print('run' + str(loopid) + ':')
print()
if cFunc.s == LCURL:
cFunc.getSym()
i = -1
while i != cFunc.index:
i = cFunc.index
stmt()
if cFunc.s == RCURL:
cFunc.getSym()
if cFunc.s == WHILE:
cFunc.getSym()
print('if:')
if cFunc.s == LPAREN:
cFunc.getSym()
i = cFunc.index
booleanStmt()
if i != cFunc.index:
if cFunc.s == RPAREN:
cFunc.getSym()
if cFunc.s == SEMICOLON:
cFunc.getSym()
print('jump run' + str(loopid))
return
elif cFunc.s == FOR:
loopid = loop
code = 'iter ' + str(loopid) + ':'
loop = loop + 1
print(code)
cFunc.getSym()
if cFunc.s == LPAREN:
cFunc.getSym()
i = cFunc.index
print('start:')
stmt()
if cFunc.s != i:
print('while: ')
booleanStmt()
boolean = maxbool
if cFunc.s == SEMICOLON:
cFunc.getSym()
reassign()
if cFunc.s == RPAREN:
cFunc.getSym()
print()
if cFunc.s == LCURL:
cFunc.getSym()
i = -1
while i != cFunc.index:
i = cFunc.index
stmt()
if cFunc.s == RCURL:
cFunc.getSym()
print('jump: iter' + str(loopid))
print()
return
def brkstmt():
if cFunc.s == BREAK:
cFunc.getSym()
if cFunc.s == SEMICOLON:
cFunc.getSym()