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better read_line performance in preprocessor

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Jump out of read_line early if the line is an empty string or a newline.
This commit is contained in:
Bryan Bishop 2013-08-31 11:57:01 -05:00
parent 7eaf5bf726
commit 473bd192d9
1 changed files with 11 additions and 8 deletions
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15
preprocessor.py
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@ -427,11 +427,9 @@ def macro_test(asm, macro_table):
token = extract_token(asm)
# skip db and dw since rgbasm handles those and they aren't macros
if token not in ["db", "dw"]:
# check against all names
if token in macro_table:
if token is not None and token not in ["db", "dw"] and token in macro_table:
return (macro_table[token], token)
else:
return (None, None)
def is_based_on(something, base):
@ -611,6 +609,10 @@ def macro_translator(macro, token, line, show_original_lines=False, do_macro_san
def read_line(l, macro_table):
"""Preprocesses a given line of asm."""
if l in ["\n", ""]:
sys.stdout.write(l)
return # jump out early
# strip comments from asm
asm, comment = separate_comment(l)
@ -624,7 +626,7 @@ def read_line(l, macro_table):
sys.stdout.write(asm)
# ascii string macro preserves the bytes as ascii (skip the translator)
elif len(asm) > 6 and "ascii " == asm[:6] or "\tascii " == asm[:7]:
elif len(asm) > 6 and ("ascii " == asm[:6] or "\tascii " == asm[:7]):
asm = asm.replace("ascii", "db", 1)
sys.stdout.write(asm)
@ -640,7 +642,8 @@ def read_line(l, macro_table):
else:
sys.stdout.write(asm)
if comment: sys.stdout.write(comment)
if comment:
sys.stdout.write(comment)
def preprocess(macro_table, lines=None):
"""Main entry point for the preprocessor."""