moved

python-prototype/il65/datatypes.py

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+"""
+Programming Language for 6502/6510 microprocessors, codename 'Sick'
+Here are the data type definitions and -conversions.
+
+Written by Irmen de Jong (irmen@razorvine.net) - license: GNU GPL 3.0
+"""
+
+import enum
+from functools import total_ordering
+
+
+@total_ordering
+class VarType(enum.Enum):
+    CONST = 1
+    MEMORY = 2
+    VAR = 3
+
+    def __lt__(self, other):
+        if self.__class__ == other.__class__:
+            return self.value < other.value
+        return NotImplemented
+
+
+@total_ordering
+class DataType(enum.Enum):
+    """The possible data types of values"""
+    BYTE = 1
+    WORD = 2
+    FLOAT = 3
+    BYTEARRAY = 4
+    WORDARRAY = 5
+    MATRIX = 6
+    STRING = 7
+    STRING_P = 8
+    STRING_S = 9
+    STRING_PS = 10
+
+    def __lt__(self, other):
+        if self.__class__ == other.__class__:
+            return self.value < other.value
+        return NotImplemented
+
+    def isnumeric(self) -> bool:
+        return self.value in (1, 2, 3)
+
+    def isinteger(self) -> bool:
+        return self.value in (1, 2)
+
+    def isarray(self) -> bool:
+        return self.value in (4, 5, 6)
+
+    def isstring(self) -> bool:
+        return self.value in (7, 8, 9, 10)
+
+
+STRING_DATATYPES = {DataType.STRING, DataType.STRING_P, DataType.STRING_S, DataType.STRING_PS}
+
+
+REGISTER_SYMBOLS = {"A", "X", "Y", "AX", "AY", "XY", "SC", "SI"}
+REGISTER_SYMBOLS_RETURNVALUES = REGISTER_SYMBOLS | {"SZ"}
+REGISTER_BYTES = {"A", "X", "Y"}
+REGISTER_SBITS = {"SC", "SI", "SZ"}
+REGISTER_WORDS = {"AX", "AY", "XY"}
+
+# 5-byte cbm MFLPT format limitations:
+FLOAT_MAX_POSITIVE = 1.7014118345e+38
+FLOAT_MAX_NEGATIVE = -1.7014118345e+38
+
+
+def char_to_bytevalue(character: str, petscii: bool=True) -> int:
+    assert len(character) == 1
+    if petscii:
+        return ord(character.translate(ascii_to_petscii_trans))
+    else:
+        raise NotImplementedError("screencode conversion not yet implemented for chars")
+
+
+# ASCII/UNICODE-to-PETSCII translation table
+# Unicode symbols supported that map to a PETSCII character:  £ ↑ ← ♠ ♥ ♦ ♣ π ● ○ and various others
+
+# @todo cbmcodecs pypi package?
+ascii_to_petscii_trans = str.maketrans({
+    '\f': 147,  # form feed becomes ClearScreen  "{clear}"
+    '\n': 13,   # line feed becomes a RETURN  "{cr}"  (not a line feed)
+    '\r': 17,   # CR becomes CursorDown  "{down}"
+    'a': 65,
+    'b': 66,
+    'c': 67,
+    'd': 68,
+    'e': 69,
+    'f': 70,
+    'g': 71,
+    'h': 72,
+    'i': 73,
+    'j': 74,
+    'k': 75,
+    'l': 76,
+    'm': 77,
+    'n': 78,
+    'o': 79,
+    'p': 80,
+    'q': 81,
+    'r': 82,
+    's': 83,
+    't': 84,
+    'u': 85,
+    'v': 86,
+    'w': 87,
+    'x': 88,
+    'y': 89,
+    'z': 90,
+    'A': 97,
+    'B': 98,
+    'C': 99,
+    'D': 100,
+    'E': 101,
+    'F': 102,
+    'G': 103,
+    'H': 104,
+    'I': 105,
+    'J': 106,
+    'K': 107,
+    'L': 108,
+    'M': 109,
+    'N': 110,
+    'O': 111,
+    'P': 112,
+    'Q': 113,
+    'R': 114,
+    'S': 115,
+    'T': 116,
+    'U': 117,
+    'V': 118,
+    'W': 119,
+    'X': 120,
+    'Y': 121,
+    'Z': 122,
+    '{': 179,       # left squiggle
+    '}': 235,       # right squiggle
+    '£': 92,        # pound currency sign
+    '^': 94,        # up arrow
+    '~': 126,       # pi math symbol
+    'π': 126,       # pi symbol
+    '`': 39,        # single quote
+    '✓': 250,       # check mark
+
+    '|': 221,       # vertical bar
+    '│': 221,       # vertical bar
+    '─': 96,        # horizontal bar
+    '┼': 123,       # vertical and horizontal bar
+
+    '↑': 94,        # up arrow
+    '←': 95,        # left arrow
+
+    '▔': 163,       # upper bar
+    '_': 164,       # lower bar (underscore)
+    '▁': 164,       # lower bar
+    '▎': 165,       # left bar
+
+    '♠': 97,        # spades
+    '●': 113,       # circle
+    '♥': 115,       # hearts
+    '○': 119,       # open circle
+    '♣': 120,       # clubs
+    '♦': 122,       # diamonds
+
+    '├': 171,       # vertical and right
+    '┤': 179,       # vertical and left
+    '┴': 177,       # horiz and up
+    '┬': 178,       # horiz and down
+    '└': 173,       # up right
+    '┐': 174,       # down left
+    '┌': 175,       # down right
+    '┘': 189,       # up left
+    '▗': 172,       # block lr
+    '▖': 187,       # block ll
+    '▝': 188,       # block ur
+    '▘': 190,       # block ul
+    '▚': 191,       # block ul and lr
+    '▌': 161,       # left half
+    '▄': 162,       # lower half
+    '▒': 230,       # raster
+})