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This commit introduces a few changes in pipalang syntax. Now, both
functions and variables requires keywords to be defined.
before:
main(): i32 {
a: i32 = 2;
return a;
}
now:
fn main(): i32 {
let a: i32 = 2;
return a;
}
Signed-off-by: Carlos Maniero <carlos@maniero.me>
Reviewed-by: Johnny Richard <johnny@johnnyrichard.com>
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This commit introduces variable assignment making it possible to
change a variable value. Example:
myvar: i32 = 1;
myvar = 2;
Signed-off-by: Johnny Richard <johnny@johnnyrichard.com>
Co-authored-by: Carlos Maniero <carlos@maniero.me>
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We were moving the stack data for variable reference to another stack
position ending up with two pointer to the same value.
// a: i32 = 1;
mov $1, -8(%rbp)
// b: i32 = a;
mov -8(%rbp), %rax
mov %rax, -24(%rbp)
mov -24(%rbp), %rax
mov %rax, -16(%rbp)
After this changes, we wont create a new temp space on stack if we don't
need it. See bellow the example after the optimization:
// a: i32 = 1;
mov $1, -8(%rbp)
// b: i32 = a;
mov -8(%rbp), %rax
mov %rax, -16(%rbp)
Signed-off-by: Johnny Richard <johnny@johnnyrichard.com>
Co-authored-by: Carlos Maniero <carlosmaniero@gmail.com>
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This patch adds the variable compilation and uses a scope (a stack of
map) to lookup for identities.
Today we use a vector + ref_entry structs in order to achieve the scope
implementation. The ref_entry lacks memory management, we are still no
sure who will be the owner of the pointer.
We also want to replace the scope a hashtable_t type as soon as we get
one.
Signed-off-by: Johnny Richard <johnny@johnnyrichard.com>
Co-authored-by: Carlos Maniero <carlosmaniero@gmail.com>
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