def __init__(self, uri):
self.isArduino = False # geeft aan of de code moet worden gecompileerd naar een .ino bestand voor de Arduino
# TODO: Change to flag
lexer = Lexer(
) # TODO: the lexer now inherits from the parser. The Lexer should instead take in a parser
lexer.feed(uri)
lexed_elements = lexer.get_elements(
) # TODO: check performance of throwing this around
c = self.to_c(lexed_elements)
print(c)
# TODO: this is hardcoded
file = open("../working-code.c", "w") # Write the C code to a file
file.write(c)
file.close()
class Parser:
def __init__(self):
self.lex = Lexer()
self.path = None
self.prev_tok = None
self.this_tok = None
def parse(self, text):
self.lex.feed(text)
self.tok_next()
return self.program()
def program(self):
# program -> sub* "EOF"
sections = []
while not self.tok_is([Tok.EOF]):
sections.append(self.sub())
return Program(sections)
def sub(self):
# sub -> "sub" identifier "(" "args" "=" int "," "locs" "=" int ")" "do"
# (name? instruction)*
# "end"
args = 0
locs = 0
self.tok_consume(Tok.SUB, "Expected the beginning of a sub")
self.tok_consume(Tok.ID, "A sub name should follow the `sub` keyword")
id = self.prev_tok
self.tok_consume(Tok.LPAR, "Expected an opening paren after subroutine name")
self.tok_consume(Tok.ARGS, "Expected an \"args\" argument.")
self.tok_consume(Tok.EQ, "Expected an equals after \"args\" argument")
args = self.lit_i32()
self.tok_consume(Tok.COMMA, "Expected a comma separating \"args\" from \"locs\"")
self.tok_consume(Tok.LOCS, "Expected a \"locs\" argument.")
self.tok_consume(Tok.EQ, "Expected an equals after \"locs\" argument")
locs = self.lit_i32()
self.tok_consume(Tok.RPAR, "Expected a closing paren after subroutine "
"argument list")
self.tok_consume(Tok.DO, "Expected a `do ... end` block after sub definition")
ins = []
while not self.tok_is([Tok.END, Tok.EOF]):
if self.tok_is([Tok.LABEL]):
ins.append(self.label())
ins.append(self.ins())
self.tok_consume(Tok.END, "Missing `end` keyword after block")
return SubStm(id, ins, args, locs)
def ins(self):
if self.tok_matches(Tok.HALT_INS):
return HaltIns()
elif self.tok_matches(Tok.NOOP_INS):
return NoopIns()
elif self.tok_matches(Tok.I32_INS):
return self.i32_ins()
elif self.tok_matches(Tok.FLT_INS):
return self.flt_ins()
elif self.tok_matches(Tok.ADD_I32_INS):
return self.add_i32_ins()
elif self.tok_matches(Tok.SUB_I32_INS):
return self.sub_i32_ins()
elif self.tok_matches(Tok.MUL_I32_INS):
return self.mul_i32_ins()
elif self.tok_matches(Tok.DIV_I32_INS):
return self.div_i32_ins()
elif self.tok_matches(Tok.MOD_I32_INS):
return self.mod_i32_ins()
elif self.tok_matches(Tok.ADD_FLT_INS):
return self.add_flt_ins()
elif self.tok_matches(Tok.SUB_FLT_INS):
return self.sub_flt_ins()
elif self.tok_matches(Tok.MUL_FLT_INS):
return self.mul_flt_ins()
elif self.tok_matches(Tok.DIV_FLT_INS):
return self.div_flt_ins()
elif self.tok_matches(Tok.I32_FLT_INS):
return self.i32_flt_ins()
elif self.tok_matches(Tok.FLT_I32_INS):
return self.flt_i32_ins()
elif self.tok_matches(Tok.CALL_INS):
return self.call_ins()
elif self.tok_matches(Tok.RECEIVE_INS):
return self.receive_ins()
elif self.tok_matches(Tok.RETURN_INS):
return self.return_ins()
elif self.tok_matches(Tok.JMP_INS):
return self.jmp_ins()
elif self.tok_matches(Tok.JEQ_INS):
return self.jeq_ins()
elif self.tok_matches(Tok.JNE_INS):
return self.jne_ins()
elif self.tok_matches(Tok.JLT_INS):
return self.jlt_ins()
elif self.tok_matches(Tok.JLE_INS):
return self.jle_ins()
elif self.tok_matches(Tok.JGT_INS):
return self.jgt_ins()
elif self.tok_matches(Tok.JGE_INS):
return self.jge_ins()
elif self.tok_matches(Tok.JEQZ_INS):
return self.jeqz_ins()
elif self.tok_matches(Tok.JNEZ_INS):
return self.jnez_ins()
elif self.tok_matches(Tok.JLTZ_INS):
return self.jltz_ins()
elif self.tok_matches(Tok.JLEZ_INS):
return self.jlez_ins()
elif self.tok_matches(Tok.JGTZ_INS):
return self.jgtz_ins()
elif self.tok_matches(Tok.JGEZ_INS):
return self.jgez_ins()
elif self.tok_matches(Tok.MOVE_INS):
return self.move_ins()
elif self.tok_matches(Tok.PRINT_INS):
return self.print_ins()
else:
raise ParserError("Expected an instruction, got {}".format(self.this_tok.lexeme))
def i32_ins(self):
# i32_ins -> ^I32^ lit_i32 register
lit = self.lit_i32()
dest = self.register()
return CnsI32Ins(lit, dest)
def flt_ins(self):
# flt_ins -> ^FLT^ lit_flt register
lit = self.lit_flt()
dest = self.register()
return CnsFltIns(lit, dest)
def add_i32_ins(self):
# add_i32_ins -> ^ADD^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return AddI32Ins(src0, src1, dest)
def sub_i32_ins(self):
# sub_i32_ins -> ^SUB^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return SubI32Ins(src0, src1, dest)
def mul_i32_ins(self):
# mul_i32_ins -> ^MUL^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return MulI32Ins(src0, src1, dest)
def div_i32_ins(self):
# div_i32_ins -> ^DIV^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return DivI32Ins(src0, src1, dest)
def mod_i32_ins(self):
# mod_i32_ins -> ^MOD^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return ModI32Ins(src0, src1, dest)
def add_flt_ins(self):
# add_flt_ins -> ^ADD^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return AddFltIns(src0, src1, dest)
def sub_flt_ins(self):
# sub_flt_ins -> ^SUB^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return SubFltIns(src0, src1, dest)
def mul_flt_ins(self):
# mul_i32_ins -> ^MUL^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return MulFltIns(src0, src1, dest)
def div_flt_ins(self):
# div_i32_ins -> ^DIV^ register register register
src0 = self.register()
src1 = self.register()
dest = self.register()
return DivFltIns(src0, src1, dest)
def i32_flt_ins(self):
# i32_flt_ins -> ^I32.FLT^ register register
src0 = self.register()
dest = self.register()
return I32FltIns(src0, dest)
def flt_i32_ins(self):
# flt_i32_ins -> ^FLT.I32^ register register
src0 = self.register()
dest = self.register()
return FltI32Ins(src0, dest)
def call_ins(self):
# call_ins -> ^CALL^ id register*
self.tok_consume(Tok.ID, "Expected a subroutine name")
id = self.prev_tok
src = []
while self.tok_is([Tok.ID]):
src.append(self.register())
return CallIns(id, src)
def receive_ins(self):
# receive_ins -> ^RECEIVE^ register
return ReceiveIns(self.register())
def return_ins(self):
# return_ins -> ^RETURN^ register?
if self.tok_is([Tok.ID]):
return RetIns(self.register())
else:
return RetIns(None)
def jmp_ins(self):
# jmp_ins -> ^JMP^ at_location
return JmpIns(self.at_location())
def jeq_ins(self):
# jeq_ins -> ^JEQ^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JeqIns(at_location, src0, src1)
def jne_ins(self):
# jne_ins -> ^JNE^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JneIns(at_location, src0, src1)
def jlt_ins(self):
# jlt_ins -> ^JLT^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JltIns(at_location, src0, src1)
def jle_ins(self):
# jle_ins -> ^JLE^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JleIns(at_location, src0, src1)
def jgt_ins(self):
# jgt_ins -> ^JGT^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JgtIns(at_location, src0, src1)
def jge_ins(self):
# jge_ins -> ^JGE^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JgeIns(at_location, src0, src1)
def jeqz_ins(self):
# jeqz_ins -> ^JEQZ^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JeqzIns(at_location, src0, src1)
def jnez_ins(self):
# jnez_ins -> ^JNEZ^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JnezIns(at_location, src0, src1)
def jltz_ins(self):
# jltz_ins -> ^JLTZ^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JltzIns(at_location, src0, src1)
def jlez_ins(self):
# jlez_ins -> ^JLEZ^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JlezIns(at_location, src0, src1)
def jgtz_ins(self):
# jgtz_ins -> ^JGTZ^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JgtzIns(at_location, src0, src1)
def jgez_ins(self):
# jgez_ins -> ^JGEZ^ at_location register register
at_location = self.at_location()
src0 = self.register()
src1 = self.register()
return JgezIns(at_location, src0, src1)
def move_ins(self):
# move_ins -> ^MOVE^ register register
src0 = self.register()
dest = self.register()
return MoveIns(src0, dest)
def print_ins(self):
# print_ins -> ^PRINT^ register
return PrintIns(self.register())
def register(self):
if self.tok_matches(Tok.ID):
lexeme = self.prev_tok.lexeme.lower()
if lexeme.startswith("r"):
try:
reg_index = int(lexeme[1:])
return Register(reg_index)
except ValueError:
raise ParserError("[{}:{}] Not a valid register: {}"
.format(self.prev_tok.lineno,
self.prev_tok.colno,
lexeme))
else:
raise ParserError("[{}:{}] Expected a register"
.format(self.prev_tok.lineno, self.prev_tok.colno))
def lit_i32(self):
if self.tok_matches(Tok.I32_LIT):
return LitI32(self.prev_tok)
else:
raise ParserError(self.this_tok, "Expected a 32 bit integer")
def lit_flt(self):
if self.tok_matches(Tok.FLT_LIT):
return LitFlt(self.prev_tok)
else:
raise ParserError(self.this_tok, "Expected a float")
def label(self):
if self.tok_matches(Tok.LABEL):
return Label(self.prev_tok.lexeme.lower())
else:
raise ParserError("Expected a label")
def at_location(self):
if self.tok_matches(Tok.AT_LOCATION):
return AtLocation(self.prev_tok.lexeme.lower())
else:
raise ParserError("Expected an at-location")
def tok_next(self):
self.prev_tok = self.this_tok
self.this_tok = self.lex.get_tok()
return self.prev_tok
def tok_matches(self, kind):
if self.this_tok.kind == kind:
self.tok_next()
return True
else:
return False
def tok_consume(self, kind, msg):
if self.this_tok.kind == kind:
self.tok_next()
else:
raise ParserError(self.this_tok, msg)
def tok_is(self, kind_arr: List) -> bool:
return self.this_tok.kind in kind_arr
def __init__(self, source): lexer = Lexer() lexer.feed(source) self.tree = lexer.tree
