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When the assignment value is a literal, it just assigns zero or one to
the variable stack's location. If the value is an expression, it
compiles the expression and assign zeros and ones based on expression
result.
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Now if statements are complete! The function
%gas_assembly_generator_compile_condition% is generic and will be used
for any other flow-control statment. The only requirement to it work is
having two labels: One to jump when the condition is true, and another
one when the condition is false.
Signed-off-by: Carlos Maniero <carlos@maniero.me>
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If statements are now working, the only exception is for the comparators
|| and && that will be addressed in a further commit. Checks tested:
fn main(): i32 {
let n: i32 = 11;
if (n == 11) {
if n != 12 {
if n < 12 {
if n <= 11 {
if n > 10 {
if n >= 11 {
return 42;
}
}
}
}
}
}
return n;
}
To compile the && and || a precedence issue must be addressed: they must
have the highest precedence, witch is not working now:
1 == 2 || 3 != 2
The or should be the higher level of the tree in the example above.
Signed-off-by: Carlos Maniero <carlos@maniero.me>
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This commit parses a if statement following the grammar bellow:
if boolean_expression {
n_epressions;
}
No else neither code generation was implemented.
Signed-off-by: Carlos Maniero <carlos@maniero.me>
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