Steps towards tracking scopes for identifiers.

	- Identifiers refer now to the language entity (Object)
	  that they denote. At the moment this is at best an
	  approximation.

	- Initial data structures for language entities (Objects)
          and expression types (Type) independent of the actual
	  type notations.

	- Initial support for declaring and looking up identifiers.

	- Updated various dependent files and added support functions.

	- Extensively tested to avoid breakage. This is an AST change.

R=rsc
CC=golang-dev, rog
http://codereview.appspot.com/189080

1 files changed, 2 insertions, 2 deletions

diff --git a/src/pkg/exp/eval/expr.go b/src/pkg/exp/eval/expr.go
index 8e161e522..27aea0877 100644
--- a/src/pkg/exp/eval/expr.go
+++ b/src/pkg/exp/eval/expr.go
@@ -578,7 +578,7 @@ func (a *exprCompiler) compile(x ast.Expr, callCtx bool) *expr {
 		}
 
 	case *ast.Ident:
-		return ei.compileIdent(a.block, a.constant, callCtx, x.Value)
+		return ei.compileIdent(a.block, a.constant, callCtx, x.Name())
 
 	case *ast.IndexExpr:
 		l, r := a.compile(x.X, false), a.compile(x.Index, false)
@@ -612,7 +612,7 @@ func (a *exprCompiler) compile(x ast.Expr, callCtx bool) *expr {
 		if v == nil {
 			return nil
 		}
-		return ei.compileSelectorExpr(v, x.Sel.Value)
+		return ei.compileSelectorExpr(v, x.Sel.Name())
 
 	case *ast.StarExpr:
 		// We pass down our call context because this could be