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Current Path: /opt/golang/1.19.4/src/cmd/compile/internal/noder

opt / golang / 1.19.4 / src / cmd / compile / internal / noder /

📁 ..
📄 codes.go(1.27 KB)
📄 decl.go(10.83 KB)
📄 export.go(800 B)
📄 expr.go(14.16 KB)
📄 func.go(1.9 KB)
📄 helpers.go(5.96 KB)
📄 import.go(10.31 KB)
📄 irgen.go(11.3 KB)
📄 lex.go(5.06 KB)
📄 lex_test.go(3.64 KB)
📄 linker.go(7.05 KB)
📄 noder.go(13.33 KB)
📄 object.go(5.56 KB)
📄 posmap.go(2.02 KB)
📄 quirks.go(1.8 KB)
📄 reader.go(58.09 KB)
📄 scopes.go(1.49 KB)
📄 sizes.go(4.04 KB)
📄 stencil.go(79.07 KB)
📄 stmt.go(8.67 KB)
📄 transform.go(28.22 KB)
📄 types.go(16.72 KB)
📄 unified.go(9.09 KB)
📄 validate.go(3.09 KB)
📄 writer.go(41.38 KB)

Editing: scopes.go

// Copyright 2021 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 noder

import (
	"strings"

"cmd/compile/internal/base"
	"cmd/compile/internal/ir"
	"cmd/compile/internal/syntax"
	"cmd/compile/internal/types2"
)

// recordScopes populates fn.Parents and fn.Marks based on the scoping
// information provided by types2.
func (g *irgen) recordScopes(fn *ir.Func, sig *syntax.FuncType) {
	scope, ok := g.info.Scopes[sig]
	if !ok {
		base.FatalfAt(fn.Pos(), "missing scope for %v", fn)
	}

for i, n := 0, scope.NumChildren(); i < n; i++ {
		g.walkScope(scope.Child(i))
	}

g.marker.WriteTo(fn)
}

func (g *irgen) walkScope(scope *types2.Scope) bool {
	// types2 doesn't provide a proper API for determining the
	// lexical element a scope represents, so we have to resort to
	// string matching. Conveniently though, this allows us to
	// skip both function types and function literals, neither of
	// which are interesting to us here.
	if strings.HasPrefix(scope.String(), "function scope ") {
		return false
	}

g.marker.Push(g.pos(scope))

haveVars := false
	for _, name := range scope.Names() {
		if obj, ok := scope.Lookup(name).(*types2.Var); ok && obj.Name() != "_" {
			haveVars = true
			break
		}
	}

for i, n := 0, scope.NumChildren(); i < n; i++ {
		if g.walkScope(scope.Child(i)) {
			haveVars = true
		}
	}

if haveVars {
		g.marker.Pop(g.end(scope))
	} else {
		g.marker.Unpush()
	}

return haveVars
}

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Editing: scopes.go

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