def parseSubroutine(self, s, bytecode_program, filename, line_number, column_number):
if BytecodeReader.looksLikeLiteral(s):
raise Exception('The name %s is not valid as a subroutine name (it looks like a number).' % s)
if s in Opcode.__members__:
raise Exception('The name %s is not valid as a subroutine name (it is a built-in command).' % s)
if s in Keyword.__members__:
raise Exception('The name %s is not valid as a subroutine name (it is a keyword).' % s)
bytecode_program.addInstruction(BytecodeInstruction.newSubroutine(s, filename, line_number, column_number))
self.mode = Mode.NORMAL
def parseString(self, s, bytecode_program, filename, line_number, column_number, isMiniMaestro):
try:
if BytecodeReader.looksLikeLiteral(s):
if s.startswith('0X'):
try:
num = int(s, 16)
except ValueError:
raise Exception('Value %s must be an integer.' % s)
if num > 65535 or num < 0:
raise Exception('Value %s is not in the allowed range of 0 to 65525.' % s)
else:
try:
num = int(s)
except ValueError:
raise Exception('Value %s must be an integer.' % s)
if num > 65535 or num < 0:
raise Exception('Value %s is not in the allowed range of 0 to 65525.' % s)
literal = (num % 65535)
bytecode_program.addLiteral(literal, filename, line_number, column_number, isMiniMaestro)
return
except Exception as ex:
raise Exception('Error parsing %s: %s' % (s, ex))
if s == 'GOTO':
self.mode = Mode.GOTO
elif s == 'SUB':
self.mode = Mode.SUBROUTINE
else:
match = re.match(r"(.*):$", s)
if match:
bytecode_program.addInstruction(BytecodeInstruction.newLabel(
'USER_%s' % match.group(1), filename, line_number, column_number))
elif s == 'BEGIN':
bytecode_program.openBlock(BlockType.BEGIN, filename, line_number, column_number)
elif s == 'WHILE':
if bytecode_program.getCurrentBlockType() != BlockType.BEGIN:
raise Exception('WHILE must be inside a BEGIN...REPEAT block')
bytecode_program.addInstruction(BytecodeInstruction.newConditionalJumpToLabel(
bytecode_program.getCurrentBlockEndLabel(), filename, line_number, column_number))
elif s == 'REPEAT':
try:
if bytecode_program.getCurrentBlockType() != BlockType.BEGIN:
raise Exception('REPEAT must end a BEGIN...REPEAT block')
bytecode_program.addInstruction(BytecodeInstruction.newJumpToLabel(
bytecode_program.getCurrentBlockStartLabel(), filename, line_number, column_number))
bytecode_program.closeBlock(filename, line_number, column_number)
except:
raise Exception('%s:%s:%s: Found REPEAT without a corresponding BEGIN.'
% (filename, line_number, column_number))
elif s == 'IF':
bytecode_program.openBlock(BlockType.IF, filename, line_number, column_number)
bytecode_program.addInstruction(BytecodeInstruction.newConditionalJumpToLabel(
bytecode_program.getCurrentBlockEndLabel(), filename, line_number, column_number))
elif s == 'ENDIF':
try:
if bytecode_program.getCurrentBlockType() != BlockType.IF and \
bytecode_program.getCurrentBlockType() != BlockType.ELSE:
raise Exception('ENDIF must end an IF...ENDIF or an IF...ELSE...ENDIF block.')
bytecode_program.closeBlock(filename, line_number, column_number)
except:
raise Exception('%s:%s:%s: Found ENDIF without a corresponding IF.'
% (filename, line_number, column_number))
elif s == 'ELSE':
try:
if bytecode_program.getCurrentBlockType() != BlockType.IF:
raise Exception('ELSE must be part of an IF...ELSE...ENDIF block.')
bytecode_program.addInstruction(BytecodeInstruction.newJumpToLabel(
bytecode_program.getNextBlockEndLabel(), filename, line_number, column_number))
bytecode_program.closeBlock(filename, line_number, column_number)
bytecode_program.openBlock(BlockType.ELSE, filename, line_number, column_number)
except:
raise Exception('%s:%s:%s: Found ELSE without a corresponding IF.'
% (filename, line_number, column_number))
else:
try:
op = Opcode[s]
if op in [Opcode.LITERAL, Opcode.LITERAL8, Opcode.LITERAL_N, Opcode.LITERAL8_N]:
raise Exception('%s:%s:%s: Literal commands may not be used directly in a program. '
'Integers should be entered directly.' % (filename, line_number, column_number))
elif op == Opcode.JUMP or op == Opcode.JUMP_Z:
raise Exception('%s:%s:%s: Jumps may not be used directly in a program.'
% (filename, line_number, column_number))
else:
if not isMiniMaestro and op >= 50:
raise Exception('%s:%s:%s: is only available on the Mini Maestro 12, 18, and 24.'
% (filename, line_number, column_number))
bytecode_program.addInstruction(BytecodeInstruction(op, filename, line_number, column_number))
except KeyError:
bytecode_program.addInstruction(
BytecodeInstruction.newCall(s, filename, line_number, column_number))
def closeBlock(self, filename, line_number, column_number):
self.addInstruction(BytecodeInstruction.newLabel('block_end_%s' % self.openBlocks.pop(), filename,
line_number, column_number))
self.openBlockTypes.pop()
def parseGoto(self, s, bytecode_program, filename, line_number, column_number):
bytecode_program.addInstruction(BytecodeInstruction.newJumpToLabel(
'USER_' + s, filename, line_number, column_number))
self.mode = Mode.NORMAL
def openBlock(self, blocktype, filename, line_number, column_number):
self.addInstruction(BytecodeInstruction.newLabel('block_start_%s' % self.maxBlock,
filename, line_number, column_number))
self.openBlocks.append(self.maxBlock)
self.openBlockTypes.append(blocktype)
self.maxBlock += 1
