106 lines
2.6 KiB
Plaintext
Executable File
106 lines
2.6 KiB
Plaintext
Executable File
#!@PYTHON3@
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# makes the "database.h" (1st argument, $1) file from "database.h.in"
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# (2nd argument, $2), setting various mask operation definitions
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# according to the number of words implied by the value of TT_MAXTYPES
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import re
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import sys
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database_h_in = open(sys.argv[1], encoding="utf8").read()
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maxtypes_rx = re.compile(r"#define\s+TT_MAXTYPES\s+(\d+)")
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match = maxtypes_rx.findall(database_h_in)
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if len(match) == 0:
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print("Bad regular expression in " + sys.argv[0] + ": Cannot "
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+ "generate database/database.h!", file=sys.stderr)
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exit(-1)
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maxtypes = int(match[0])
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# Find derived values from bits per word
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# Note that bits-per-word should be determined from the compiler, but
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# 32 bits per word has always been hardwired into magic.
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#
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bpw = 32
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maskwords = (maxtypes + bpw - 1) // bpw
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# Prepare Output String
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out_string = database_h_in
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def p(string):
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global out_string
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out_string += string
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# Generated macros
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def add_generated_mask_macro(name, expression, *, connector=","):
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global maskwords
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p("#define " + name + " ( \\\n")
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for i in reversed(range(maskwords)):
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p("\t" + expression.format(i=i))
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if i == 0:
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p(")\n\n")
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else:
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p(connector + " \\\n")
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add_generated_mask_macro(
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"TTMaskZero(m)",
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"(m)->tt_words[{i}] = 0",
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)
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add_generated_mask_macro(
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"TTMaskIsZero(m)",
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"(m)->tt_words[{i}] == 0",
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connector=" &&",
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)
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add_generated_mask_macro(
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"TTMaskEqual(m, n)",
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"(m)->tt_words[{i}] == (n)->tt_words[{i}]",
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connector=" &&",
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)
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add_generated_mask_macro(
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"TTMaskIntersect(m, n)",
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"((m)->tt_words[{i}] & (n)->tt_words[{i}])",
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connector=" ||",
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)
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add_generated_mask_macro(
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"TTMaskCom(m)",
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"((m)->tt_words[{i}] = ~(m)->tt_words[{i}])",
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)
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add_generated_mask_macro(
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"TTMaskCom2(m, n)",
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"((m)->tt_words[{i}] = ~(n)->tt_words[{i}])",
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)
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add_generated_mask_macro(
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"TTMaskSetMask(m, n)",
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"((m)->tt_words[{i}] |= (n)->tt_words[{i}])",
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)
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add_generated_mask_macro(
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"TTMaskSetMask3(m, n, o)",
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"((m)->tt_words[{i}] |= (n)->tt_words[{i}] | (o)->tt_words[{i}])",
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)
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add_generated_mask_macro(
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"TTMaskAndMask(m, n)",
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"((m)->tt_words[{i}] &= (n)->tt_words[{i}])",
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)
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add_generated_mask_macro(
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"TTMaskAndMask3(m, n, o)",
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"((m)->tt_words[{i}] = (n)->tt_words[{i}] & (o)->tt_words[{i}])",
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)
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add_generated_mask_macro(
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"TTMaskClearMask(m, n)",
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"((m)->tt_words[{i}] &= ~(n)->tt_words[{i}])",
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)
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add_generated_mask_macro(
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"TTMaskClearMask3(m, n, o)",
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"((m)->tt_words[{i}] = (n)->tt_words[{i}] & ~(o)->tt_words[{i}])",
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)
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p("#endif /* _DATABASE_H */\n")
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with open(sys.argv[2], "w", encoding="utf8") as f:
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f.write(out_string)
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