Add soong_build primary builder
Initial build logic for building android with soong. It can build
a variety of C and C++ files for arm/arm64 and host.
Change-Id: I10eb37c2c2a50be6af1bb5fd568c0962b9476bf0
diff --git a/androidmk/parser/scope.go b/androidmk/parser/scope.go
new file mode 100644
index 0000000..742ad38
--- /dev/null
+++ b/androidmk/parser/scope.go
@@ -0,0 +1,88 @@
+package parser
+
+import "strings"
+
+type Scope interface {
+ Get(name string) string
+ Set(name, value string)
+ Call(name string, args []string) string
+ SetFunc(name string, f func([]string) string)
+}
+
+type scope struct {
+ variables map[string]string
+ functions map[string]func([]string) string
+ parent Scope
+}
+
+func (s *scope) Get(name string) string {
+ if val, ok := s.variables[name]; ok {
+ return val
+ } else if s.parent != nil {
+ return s.parent.Get(name)
+ } else if val, ok := builtinScope[name]; ok {
+ return val
+ } else {
+ return "<'" + name + "' unset>"
+ }
+}
+
+func (s *scope) Set(name, value string) {
+ s.variables[name] = value
+}
+
+func (s *scope) Call(name string, args []string) string {
+ if f, ok := s.functions[name]; ok {
+ return f(args)
+ }
+
+ return "<func:'" + name + "' unset>"
+}
+
+func (s *scope) SetFunc(name string, f func([]string) string) {
+ s.functions[name] = f
+}
+
+func NewScope(parent Scope) Scope {
+ return &scope{
+ variables: make(map[string]string),
+ functions: make(map[string]func([]string) string),
+ parent: parent,
+ }
+}
+
+var builtinScope map[string]string
+
+func init() {
+ builtinScope := make(map[string]string)
+ builtinScope["__builtin_dollar"] = "$"
+}
+
+func (v Variable) Value(scope Scope) string {
+ f := v.Name.SplitN(" \t", 2)
+ if len(f) > 1 && f[0].Const() {
+ fname := f[0].Value(nil)
+ if isFunctionName(fname) {
+ args := f[1].Split(",")
+ argVals := make([]string, len(args))
+ for i, a := range args {
+ argVals[i] = a.Value(scope)
+ }
+
+ if fname == "call" {
+ return scope.Call(argVals[0], argVals[1:])
+ } else {
+ return "__builtin_func:" + fname + " " + strings.Join(argVals, " ")
+ }
+ }
+ }
+
+ return scope.Get(v.Name.Value(scope))
+}
+
+func toVariable(ms *MakeString) (Variable, bool) {
+ if len(ms.Variables) == 1 && ms.Strings[0] == "" && ms.Strings[1] == "" {
+ return ms.Variables[0], true
+ }
+ return Variable{}, false
+}