parser: add support for unary operators

2 files changed, 11 insertions, 0 deletions

diff --git a/lang/golang/go.go b/lang/golang/go.go
index 26af4f3..f5a6578 100644
--- a/lang/golang/go.go
+++ b/lang/golang/go.go
@@ -91,6 +91,7 @@ var GoSpec = &lang.Spec{
 		"<=": {TokenId: lang.LessEqual, Precedence: 3},
 		">=": {TokenId: lang.GreaterEqual, Precedence: 3},
 		"->": {TokenId: lang.Arrow},
+		"!":  {TokenId: lang.Not},
 		"++": {TokenId: lang.Inc, SkipSemi: true},
 		"--": {TokenId: lang.Dec, SkipSemi: true},
 
diff --git a/lang/token.go b/lang/token.go
index a894c98..4bf9bf2 100644
--- a/lang/token.go
+++ b/lang/token.go
@@ -116,6 +116,16 @@ const (
 	EqualSet
 )
 
+var UnaryOp = map[TokenId]TokenId{
+	Add:   Plus,    // +
+	And:   Address, // &
+	Not:   Not,     // !
+	Mul:   Deref,   // *
+	Sub:   Minus,   // -
+	Tilde: Tilde,   // ~
+	Xor:   BitComp, // ^
+}
+
 func (t TokenId) IsKeyword() bool   { return t >= Break && t <= Var }
 func (t TokenId) IsLiteral() bool   { return t >= Char && t <= String }
 func (t TokenId) IsOperator() bool  { return t >= Add && t <= Tilde }