Refactored code structure

src/build/core/Compile.go

@@ -0,0 +1,55 @@
+package core
+
+import (
+	"git.akyoto.dev/cli/q/src/build/errors"
+)
+
+// Compile waits for the scan to finish and compiles all functions.
+func Compile(functions <-chan *Function, errs <-chan error) (Result, error) {
+	result := Result{}
+	allFunctions := map[string]*Function{}
+
+	for functions != nil || errs != nil {
+		select {
+		case err, ok := <-errs:
+			if !ok {
+				errs = nil
+				continue
+			}
+
+			return result, err
+
+		case function, ok := <-functions:
+			if !ok {
+				functions = nil
+				continue
+			}
+
+			function.functions = allFunctions
+			allFunctions[function.Name] = function
+		}
+	}
+
+	// Start parallel compilation
+	CompileAllFunctions(allFunctions)
+
+	// Report errors if any occurred
+	for _, function := range allFunctions {
+		if function.err != nil {
+			return result, function.err
+		}
+
+		result.InstructionCount += len(function.assembler.Instructions)
+	}
+
+	// Check for existence of `main`
+	main, exists := allFunctions["main"]
+
+	if !exists {
+		return result, errors.MissingMainFunction
+	}
+
+	result.Main = main
+	result.Functions = allFunctions
+	return result, nil
+}