From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified
 gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream
 tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.
---
 libgo/go/exp/eval/compiler.go | 92 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 libgo/go/exp/eval/compiler.go

(limited to 'libgo/go/exp/eval/compiler.go')

diff --git a/libgo/go/exp/eval/compiler.go b/libgo/go/exp/eval/compiler.go
new file mode 100644
index 000000000..9d2923bfc
--- /dev/null
+++ b/libgo/go/exp/eval/compiler.go
@@ -0,0 +1,92 @@
+// 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 (
+	"fmt"
+	"go/scanner"
+	"go/token"
+)
+
+
+// A compiler captures information used throughout an entire
+// compilation.  Currently it includes only the error handler.
+//
+// TODO(austin) This might actually represent package level, in which
+// case it should be package compiler.
+type compiler struct {
+	fset         *token.FileSet
+	errors       scanner.ErrorHandler
+	numErrors    int
+	silentErrors int
+}
+
+func (a *compiler) diagAt(pos token.Pos, format string, args ...interface{}) {
+	a.errors.Error(a.fset.Position(pos), fmt.Sprintf(format, args...))
+	a.numErrors++
+}
+
+func (a *compiler) numError() int { return a.numErrors + a.silentErrors }
+
+// The universal scope
+func newUniverse() *Scope {
+	sc := &Scope{nil, 0}
+	sc.block = &block{
+		offset: 0,
+		scope:  sc,
+		global: true,
+		defs:   make(map[string]Def),
+	}
+	return sc
+}
+
+var universe *Scope = newUniverse()
+
+
+// TODO(austin) These can all go in stmt.go now
+type label struct {
+	name string
+	desc string
+	// The PC goto statements should jump to, or nil if this label
+	// cannot be goto'd (such as an anonymous for loop label).
+	gotoPC *uint
+	// The PC break statements should jump to, or nil if a break
+	// statement is invalid.
+	breakPC *uint
+	// The PC continue statements should jump to, or nil if a
+	// continue statement is invalid.
+	continuePC *uint
+	// The position where this label was resolved.  If it has not
+	// been resolved yet, an invalid position.
+	resolved token.Pos
+	// The position where this label was first jumped to.
+	used token.Pos
+}
+
+// A funcCompiler captures information used throughout the compilation
+// of a single function body.
+type funcCompiler struct {
+	*compiler
+	fnType *FuncType
+	// Whether the out variables are named.  This affects what
+	// kinds of return statements are legal.
+	outVarsNamed bool
+	*codeBuf
+	flow   *flowBuf
+	labels map[string]*label
+}
+
+// A blockCompiler captures information used throughout the compilation
+// of a single block within a function.
+type blockCompiler struct {
+	*funcCompiler
+	block *block
+	// The label of this block, used for finding break and
+	// continue labels.
+	label *label
+	// The blockCompiler for the block enclosing this one, or nil
+	// for a function-level block.
+	parent *blockCompiler
+}
-- 
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