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Before this commit, function declarations were making syscalls to
interrupt the flow. This is a fair approach considering all our examples
just have a main function. But won't work if the namespace has more then
a single function.
The return now always sets the return value on RAX and jumps to the
function return label.
The function return label, will restore RBP and jump back to callee's
next instruction using RET instruction.
Function labels are kept, which means that a function called my_fn will
have the assembly label my_fn, so then, they can have INTEROP with other
languages.
Signed-off-by: Carlos Maniero <carlos@maniero.me>
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Parsing can be a complex process, and it's not always easy to get a
clear picture of what's happening with the AST. This commit adds a new
feature to the CLI that allows us to pretty-print the AST (outputs to
stdout), making it easier to visualize the tree structure and understand
how the parser is working.
The new --ast-dump option generates a human-readable representation of
the AST, including node types, values, and child relationships. This
information can be invaluable for debugging and understanding the
parser's behavior.
Signed-off-by: Johnny Richard <johnny@johnnyrichard.com>
Reviewed-by: Carlos Maniero <carlos@maniero.me>
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I found easier to understand the application entrypoint by calling it
main.c.
Signed-off-by: Johnny Richard <johnny@johnnyrichard.com>
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