implementing constants

src/values.zig

@@ -0,0 +1,43 @@
+const std = @import("std");
+const debug = std.debug;
+
+const Allocator = std.mem.Allocator;
+
+const utils = @import("./utils.zig");
+
+pub const Value = f64;
+
+pub const ValueArray = struct {
+    capacity: usize,
+    count: usize,
+    values: []Value,
+
+    pub fn new() ValueArray {
+        return ValueArray{
+            .capacity = 0,
+            .count = 0,
+            .values = &.{},
+        };
+    }
+
+    pub fn write(self: *ValueArray, allocator: Allocator, value: Value) !void {
+        if (self.capacity < self.count + 1) {
+            const old_capacity = self.capacity;
+            self.capacity = utils.grow_capacity(old_capacity);
+            self.values = try allocator.realloc(self.values, self.capacity);
+        }
+
+        self.values[self.count] = value;
+        self.count += 1;
+    }
+
+    pub fn free(self: *ValueArray, allocator: Allocator) void {
+        if (self.capacity > 0) {
+            allocator.free(self.values);
+        }
+    }
+};
+
+pub fn print_value(value: Value) void {
+    debug.print("{any}", .{value});
+}