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fix elif preprocessing, I believe #1197

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fix elif preprocessing, I believe #1197

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23899f2
fix elif preprocessing, I believe
JorgeG94 Oct 29, 2025
5d4739a
add ifdef elif else test
JorgeG94 Oct 30, 2025
f791261
proper software engineering, one test per case
JorgeG94 Oct 30, 2025
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27 changes: 27 additions & 0 deletions src/fpm_source_parsing.f90
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Original file line number Diff line number Diff line change
Expand Up @@ -191,6 +191,33 @@ subroutine parse_cpp_condition(lower_line, line, preprocess, is_active, macro_na
macro_name = trim(adjustl(line(start_pos:end_pos)))
is_active = macro_in_list(macro_name, preprocess%macros)
end if
elseif (index(lower_line, '#elif') == 1) then
! #elif defined(MACRO) or #elif !defined(MACRO)
if (index(lower_line, 'defined(') > 0) then
start_pos = index(lower_line, 'defined(') + 8
end_pos = index(lower_line(start_pos:), ')') - 1

start_pos = start_pos + heading_blanks
end_pos = end_pos + heading_blanks

if (end_pos > 0) then
macro_name = line(start_pos:start_pos + end_pos - 1)
if (index(lower_line, '!defined(') > 0) then
is_active = .not. macro_in_list(macro_name, preprocess%macros)
else
is_active = macro_in_list(macro_name, preprocess%macros)
end if
else
is_active = .false.
macro_name = ""
end if
else
! simple form: #elif MACRO
start_pos = 6 + heading_blanks ! skip "#elif "
end_pos = len_trim(lower_line) + heading_blanks
macro_name = trim(adjustl(line(start_pos:end_pos)))
is_active = macro_in_list(macro_name, preprocess%macros)
end if
else
is_active = .false.
end if
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