Return values got broken in nested function calls

[genkami]

Environment:

$ amber --version
amber 0.3.3-alpha

When calling the same function more then once as an argument to another function, the return value of the function seems to get overwritten by the last function call.

Example:

fun double(n: Num): Num {
    return n * 2
}

fun add(a: Num, b: Num): Num {
    return a + b
}

echo add(double(2), double(3))
// Expected output: 4 + 6 == 10
// Actual output: 6 + 6 == 12

Compiled bash code:

#!/usr/bin/env bash
# Written in [Amber](https://amber-lang.com/)

function double__0_v0 {
    local n=$1
    __AF_double0_v0=$(echo ${n} '*' 2 | bc -l | sed '/\./ s/\.\{0,1\}0\{1,\}$//');
    return 0
}
function add__1_v0 {
    local a=$1
    local b=$2
    __AF_add1_v0=$(echo ${a} '+' ${b} | bc -l | sed '/\./ s/\.\{0,1\}0\{1,\}$//');
    return 0
}
double__0_v0 2;
__AF_double0_v0__9=$__AF_double0_v0;
double__0_v0 3;
__AF_double0_v0__9=$__AF_double0_v0;
add__1_v0 $__AF_double0_v0__9 $__AF_double0_v0__9;
__AF_add1_v0__9=$__AF_add1_v0;
echo $__AF_add1_v0__9

This is because the same variable __AF_double0_v0__9 is used to store both of the function calls in this case.

[Ph0enixKM]

This was fixed in #169

[Ph0enixKM]

New Amber version will be published this week