1 files changed, 0 insertions, 189 deletions
diff --git a/usr/austin/eval/world.go b/usr/austin/eval/world.go
deleted file mode 100644
index 6d547f6e8..000000000
--- a/usr/austin/eval/world.go
+++ /dev/null
@@ -1,189 +0,0 @@
-// Copyright 2009 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package eval
-
-import (
-	"go/ast";
-	"go/parser";
-	"go/scanner";
-	"go/token";
-	"os";
-)
-
-type World struct {
-	scope *Scope;
-	frame *Frame;
-}
-
-func NewWorld() (*World) {
-	w := new(World);
-	w.scope = universe.ChildScope();
-	w.scope.global = true;	// this block's vars allocate directly
-	return w;
-}
-
-type Code interface {
-	// The type of the value Run returns, or nil if Run returns nil.
-	Type() Type;
-
-	// Run runs the code; if the code is a single expression
-	// with a value, it returns the value; otherwise it returns nil.
-	Run() (Value, os.Error);
-}
-
-type stmtCode struct {
-	w *World;
-	code code;
-}
-
-func (w *World) CompileStmtList(stmts []ast.Stmt) (Code, os.Error) {
-	if len(stmts) == 1 {
-		if s, ok := stmts[0].(*ast.ExprStmt); ok {
-			return w.CompileExpr(s.X);
-		}
-	}
-	errors := scanner.NewErrorVector();
-	cc := &compiler{errors, 0, 0};
-	cb := newCodeBuf();
-	fc := &funcCompiler{
-		compiler: cc,
-		fnType: nil,
-		outVarsNamed: false,
-		codeBuf: cb,
-		flow: newFlowBuf(cb),
-		labels: make(map[string] *label),
-	};
-	bc := &blockCompiler{
-		funcCompiler: fc,
-		block: w.scope.block,
-	};
-	nerr := cc.numError();
-	for _, stmt := range stmts {
-		bc.compileStmt(stmt);
-	}
-	fc.checkLabels();
-	if nerr != cc.numError() {
-		return nil, errors.GetError(scanner.Sorted);
-	}
-	return &stmtCode{w, fc.get()}, nil;
-}
-
-func (w *World) CompileDeclList(decls []ast.Decl) (Code, os.Error) {
-	stmts := make([]ast.Stmt, len(decls));
-	for i, d := range decls {
-		stmts[i] = &ast.DeclStmt{d};
-	}
-	return w.CompileStmtList(stmts);
-}
-
-func (s *stmtCode) Type() Type {
-	return nil;
-}
-
-func (s *stmtCode) Run() (Value, os.Error) {
-	t := new(Thread);
-	t.f = s.w.scope.NewFrame(nil);
-	return nil, t.Try(func(t *Thread){s.code.exec(t)});
-}
-
-type exprCode struct {
-	w *World;
-	e *expr;
-	eval func(Value, *Thread);
-}
-
-func (w *World) CompileExpr(e ast.Expr) (Code, os.Error) {
-	errors := scanner.NewErrorVector();
-	cc := &compiler{errors, 0, 0};
-
-	ec := cc.compileExpr(w.scope.block, false, e);
-	if ec == nil {
-		return nil, errors.GetError(scanner.Sorted);
-	}
-	var eval func(Value, *Thread);
-	switch t := ec.t.(type) {
-	case *idealIntType:
-		// nothing
-	case *idealFloatType:
-		// nothing
-	case *MultiType:
-		if len(t.Elems) == 0 {
-			return &stmtCode{w, code{ec.exec}}, nil;
-		}
-		fallthrough;
-	default:
-		eval = genAssign(ec.t, ec);
-	}
-	return &exprCode{w, ec, eval}, nil;
-}
-
-func (e *exprCode) Type() Type {
-	return e.e.t;
-}
-
-func (e *exprCode) Run() (Value, os.Error) {
-	t := new(Thread);
-	t.f = e.w.scope.NewFrame(nil);
-	switch e.e.t.(type) {
-	case *idealIntType:
-		return &idealIntV{e.e.asIdealInt()()}, nil;
-	case *idealFloatType:
-		return &idealFloatV{e.e.asIdealFloat()()}, nil;
-	}
-	v := e.e.t.Zero();
-	eval := e.eval;
-	err := t.Try(func(t *Thread){eval(v, t)});
-	return v, err;
-}
-
-func (w *World) Compile(text string) (Code, os.Error) {
-	stmts, err := parser.ParseStmtList("input", text);
-	if err == nil {
-		return w.CompileStmtList(stmts);
-	}
-
-	// Otherwise try as DeclList.
-	decls, err1 := parser.ParseDeclList("input", text);
-	if err1 == nil {
-		return w.CompileDeclList(decls);
-	}
-
-	// Have to pick an error.
-	// Parsing as statement list admits more forms,
-	// its error is more likely to be useful.
-	return nil, err;
-}
-
-type RedefinitionError struct {
-	Name string;
-	Prev Def;
-}
-
-func (e *RedefinitionError) String() string {
-	res := "identifier " + e.Name + " redeclared";
-	pos := e.Prev.Pos();
-	if pos.IsValid() {
-		res += "; previous declaration at " + pos.String();
-	}
-	return res;
-}
-
-func (w *World) DefineConst(name string, t Type, val Value) os.Error {
-	_, prev := w.scope.DefineConst(name, token.Position{}, t, val);
-	if prev != nil {
-		return &RedefinitionError{name, prev};
-	}
-	return nil;
-}
-
-func (w *World) DefineVar(name string, t Type, val Value) os.Error {
-	v, prev := w.scope.DefineVar(name, token.Position{}, t);
-	if prev != nil {
-		return &RedefinitionError{name, prev};
-	}
-	v.Init = val;
-	return nil;
-}
-