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43 lines
1.3 KiB
Text
43 lines
1.3 KiB
Text
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Section 0: Notes on the existing codebase
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-----------------------------------------
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Not all parts of Yosys adhere to this coding styles for historical
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reasons. When adding code to existing parts of the system, adhere
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to this guide for the new code instead of trying to mimic to style
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of the surrounding code.
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Section 1: Formatting of code
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-----------------------------
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- Yosys code is using tabs for indentation. Tabs are 8 characters.
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- A continuation of a statement in the following line is indented by
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two additional tabs.
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- Lines are as long as you want them to be. A good rule of thumb is
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to break lines at about column 150.
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- Opening braces can be put on the same or next line as the statement
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opening the block (if, switch, for, while, do). Put the opening brace
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on its own line for larger blocks.
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- Otherwise stick to the Linux Kernel Coding Stlye:
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https://www.kernel.org/doc/Documentation/CodingStyle
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Section 2: C++ Langugage
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------------------------
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Yosys is written in C++11. At the moment only constructs supported by
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gcc 4.6 is allowed in Yosys code. This will change in future releases.
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In general Yosys uses "int" instead of "size_t". To avoid compiler
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warnings for implicit type casts, always use "SIZE(foobar)" instead
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of "foobar.size()". (the macro SIZE() is defined by kernel/yosys.h)
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Use range-based for loops whenever applicable.
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