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fxconv: add i8/i16/i32, with range checks

This commit is contained in:
Lephenixnoir 2023-10-17 20:14:45 +02:00
parent be8c1f0d94
commit 88235041a3
Signed by: Lephenixnoir
GPG Key ID: 1BBA026E13FC0495
1 changed files with 23 additions and 4 deletions
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27
fxconv/fxconv.py
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@ -15,7 +15,7 @@ __all__ = [
# Color names
"FX_BLACK", "FX_DARK", "FX_LIGHT", "FX_WHITE", "FX_ALPHA",
# Conversion mechanisms
"ObjectData", "u8", "u16", "u32", "ref", "sym",
"ObjectData", "u8", "u16", "u32", "i8", "i16", "i32", "ref", "sym",
# Functions
"quantize", "convert", "elf",
# Reusable classes
@ -167,11 +167,30 @@ FX_CHARSETS = {
# Conversion mechanisms
#
def u8(x):
def u8(x, check=False):
if check and not (0 <= x < 2**8):
raise FxconvError(f"integer {x} out of range for u8")
return bytes([ x & 255 ])
def u16(x):
def u16(x, check=False):
if check and not (0 <= x < 2**16):
raise FxconvError(f"integer {x} out of range for u8")
return bytes([ (x >> 8) & 255, x & 255 ])
def u32(x):
def u32(x, check=False):
if check and not (0 <= x < 2**32):
raise FxconvError(f"integer {x} out of range for u8")
return bytes([ (x >> 24) & 255, (x >> 16) & 255, (x >> 8) & 255, x & 255 ])
def i8(x, check=True):
if check and not (-2**7 <= x < 2**7):
raise FxconvError(f"integer {x} out of range for u8")
return bytes([ x & 255 ])
def i16(x, check=True):
if check and not (-2**15 <= x < 2**15):
raise FxconvError(f"integer {x} out of range for u8")
return bytes([ (x >> 8) & 255, x & 255 ])
def i32(x, check=True):
if check and not (-2**31 <= x < 2**31):
raise FxconvError(f"integer {x} out of range for u8")
return bytes([ (x >> 24) & 255, (x >> 16) & 255, (x >> 8) & 255, x & 255 ])
def ref(base, offset=None, padding=None, prefix_underscore=True, align=None):