本文整理汇总了Golang中go/types.Var类的典型用法代码示例。如果您正苦于以下问题:Golang Var类的具体用法?Golang Var怎么用?Golang Var使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Var类的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: field
func (p *exporter) field(f *types.Var) {
if !f.IsField() {
log.Fatalf("gcimporter: field expected")
}
p.pos(f)
p.fieldName(f)
p.typ(f.Type())
}
示例2: addVariable
func (b *Builder) addVariable(u types.Universe, useName *types.Name, in *tc.Var) *types.Type {
name := tcVarNameToName(in.String())
if useName != nil {
name = *useName
}
out := u.Variable(name)
out.Kind = types.DeclarationOf
out.Underlying = b.walkType(u, nil, in.Type())
return out
}
示例3: genSetter
func (g *ObjcGen) genSetter(oName string, f *types.Var) {
t := f.Type()
g.Printf("- (void)set%s:(%s)v {\n", f.Name(), g.objcType(t))
g.Indent()
g.Printf("int32_t refnum = go_seq_go_to_refnum(self._ref);\n")
g.genWrite("v", f.Type(), modeRetained)
g.Printf("proxy%s_%s_%s_Set(refnum, _v);\n", g.pkgPrefix, oName, f.Name())
g.genRelease("v", f.Type(), modeRetained)
g.Outdent()
g.Printf("}\n\n")
}
示例4: genGetter
func (g *ObjcGen) genGetter(oName string, f *types.Var) {
t := f.Type()
g.Printf("- (%s)%s {\n", g.objcType(t), objcNameReplacer(lowerFirst(f.Name())))
g.Indent()
g.Printf("int32_t refnum = go_seq_go_to_refnum(self._ref);\n")
g.Printf("%s r0 = ", g.cgoType(f.Type()))
g.Printf("proxy%s_%s_%s_Get(refnum);\n", g.pkgPrefix, oName, f.Name())
g.genRead("_r0", "r0", f.Type(), modeRetained)
g.Printf("return _r0;\n")
g.Outdent()
g.Printf("}\n\n")
}
示例5: genVar
func (g *javaGen) genVar(o *types.Var) {
if t := o.Type(); !g.isSupported(t) {
g.Printf("// skipped variable %s with unsupported type: %T\n\n", o.Name(), t)
return
}
jType := g.javaType(o.Type())
// setter
g.Printf("public static native void set%s(%s v);\n", o.Name(), jType)
// getter
g.Printf("public static native %s get%s();\n\n", jType, o.Name())
}
示例6: varPtrName
func (c *funcContext) varPtrName(o *types.Var) string {
if isPkgLevel(o) && o.Exported() {
return c.pkgVar(o.Pkg()) + "." + o.Name() + "$ptr"
}
name, ok := c.p.varPtrNames[o]
if !ok {
name = c.newVariableWithLevel(o.Name()+"$ptr", isPkgLevel(o))
c.p.varPtrNames[o] = name
}
return name
}
示例7: field
func (p *exporter) field(f *types.Var) {
// anonymous fields have "" name
name := ""
if !f.Anonymous() {
name = f.Name()
}
// qualifiedName will always emit the field package for
// anonymous fields because "" is not an exported name.
p.qualifiedName(f.Pkg(), name)
p.typ(f.Type())
}
示例8: fieldName
// fieldName is like qualifiedName but it doesn't record the package
// for blank (_) or exported names.
func (p *exporter) fieldName(f *types.Var) {
name := f.Name()
// anonymous field with unexported base type name: use "?" as field name
// (bname != "" per spec, but we are conservative in case of errors)
if f.Anonymous() {
base := f.Type()
if ptr, ok := base.(*types.Pointer); ok {
base = ptr.Elem()
}
if named, ok := base.(*types.Named); ok && !named.Obj().Exported() {
name = "?"
}
}
p.string(name)
if name == "?" || name != "_" && !f.Exported() {
p.pkg(f.Pkg(), false)
}
}
示例9: genVar
func (g *goGen) genVar(o *types.Var) {
// TODO(hyangah): non-struct pointer types (*int), struct type.
v := fmt.Sprintf("%s.%s", g.pkg.Name(), o.Name())
// var I int
//
// func var_setI(out, in *seq.Buffer)
g.Printf("func var_set%s(out, in *seq.Buffer) {\n", o.Name())
g.Indent()
g.genRead("v", "in", o.Type())
g.Printf("%s = v\n", v)
g.Outdent()
g.Printf("}\n")
// func var_getI(out, in *seq.Buffer)
g.Printf("func var_get%s(out, in *seq.Buffer) {\n", o.Name())
g.Indent()
g.genWrite(v, "out", o.Type())
g.Outdent()
g.Printf("}\n")
}
示例10: checkVarValue
func checkVarValue(t *testing.T, prog *ssa.Program, pkg *ssa.Package, ref []ast.Node, obj *types.Var, expKind string, wantAddr bool) {
// The prefix of all assertions messages.
prefix := fmt.Sprintf("VarValue(%s @ L%d)",
obj, prog.Fset.Position(ref[0].Pos()).Line)
v, gotAddr := prog.VarValue(obj, pkg, ref)
// Kind is the concrete type of the ssa Value.
gotKind := "nil"
if v != nil {
gotKind = fmt.Sprintf("%T", v)[len("*ssa."):]
}
// fmt.Printf("%s = %v (kind %q; expect %q) wantAddr=%t gotAddr=%t\n", prefix, v, gotKind, expKind, wantAddr, gotAddr) // debugging
// Check the kinds match.
// "nil" indicates expected failure (e.g. optimized away).
if expKind != gotKind {
t.Errorf("%s concrete type == %s, want %s", prefix, gotKind, expKind)
}
// Check the types match.
// If wantAddr, the expected type is the object's address.
if v != nil {
expType := obj.Type()
if wantAddr {
expType = types.NewPointer(expType)
if !gotAddr {
t.Errorf("%s: got value, want address", prefix)
}
} else if gotAddr {
t.Errorf("%s: got address, want value", prefix)
}
if !types.Identical(v.Type(), expType) {
t.Errorf("%s.Type() == %s, want %s", prefix, v.Type(), expType)
}
}
}
示例11: VarValue
// VarValue returns the SSA Value that corresponds to a specific
// identifier denoting the source-level named variable obj.
//
// VarValue returns nil if a local variable was not found, perhaps
// because its package was not built, the debug information was not
// requested during SSA construction, or the value was optimized away.
//
// ref is the path to an ast.Ident (e.g. from PathEnclosingInterval),
// and that ident must resolve to obj.
//
// pkg is the package enclosing the reference. (A reference to a var
// always occurs within a function, so we need to know where to find it.)
//
// If the identifier is a field selector and its base expression is
// non-addressable, then VarValue returns the value of that field.
// For example:
// func f() struct {x int}
// f().x // VarValue(x) returns a *Field instruction of type int
//
// All other identifiers denote addressable locations (variables).
// For them, VarValue may return either the variable's address or its
// value, even when the expression is evaluated only for its value; the
// situation is reported by isAddr, the second component of the result.
//
// If !isAddr, the returned value is the one associated with the
// specific identifier. For example,
// var x int // VarValue(x) returns Const 0 here
// x = 1 // VarValue(x) returns Const 1 here
//
// It is not specified whether the value or the address is returned in
// any particular case, as it may depend upon optimizations performed
// during SSA code generation, such as registerization, constant
// folding, avoidance of materialization of subexpressions, etc.
//
func (prog *Program) VarValue(obj *types.Var, pkg *Package, ref []ast.Node) (value Value, isAddr bool) {
// All references to a var are local to some function, possibly init.
fn := EnclosingFunction(pkg, ref)
if fn == nil {
return // e.g. def of struct field; SSA not built?
}
id := ref[0].(*ast.Ident)
// Defining ident of a parameter?
if id.Pos() == obj.Pos() {
for _, param := range fn.Params {
if param.Object() == obj {
return param, false
}
}
}
// Other ident?
for _, b := range fn.Blocks {
for _, instr := range b.Instrs {
if dr, ok := instr.(*DebugRef); ok {
if dr.Pos() == id.Pos() {
return dr.X, dr.IsAddr
}
}
}
}
// Defining ident of package-level var?
if v := prog.packageLevelValue(obj); v != nil {
return v.(*Global), true
}
return // e.g. debug info not requested, or var optimized away
}
示例12: matchWildcard
func (tr *Transformer) matchWildcard(xobj *types.Var, y ast.Expr) bool {
name := xobj.Name()
if tr.verbose {
fmt.Fprintf(os.Stderr, "%s: wildcard %s -> %s?: ",
tr.fset.Position(y.Pos()), name, astString(tr.fset, y))
}
// Check that y is assignable to the declared type of the param.
yt := tr.info.TypeOf(y)
if yt == nil {
// y has no type.
// Perhaps it is an *ast.Ellipsis in [...]T{}, or
// an *ast.KeyValueExpr in T{k: v}.
// Clearly these pseudo-expressions cannot match a
// wildcard, but it would nice if we had a way to ignore
// the difference between T{v} and T{k:v} for structs.
return false
}
if !types.AssignableTo(yt, xobj.Type()) {
if tr.verbose {
fmt.Fprintf(os.Stderr, "%s not assignable to %s\n", yt, xobj.Type())
}
return false
}
// A wildcard matches any expression.
// If it appears multiple times in the pattern, it must match
// the same expression each time.
if old, ok := tr.env[name]; ok {
// found existing binding
tr.allowWildcards = false
r := tr.matchExpr(old, y)
if tr.verbose {
fmt.Fprintf(os.Stderr, "%t secondary match, primary was %s\n",
r, astString(tr.fset, old))
}
tr.allowWildcards = true
return r
}
if tr.verbose {
fmt.Fprintf(os.Stderr, "primary match\n")
}
tr.env[name] = y // record binding
return true
}
示例13: convertVar
func (c *converter) convertVar(v *gotypes.Var) *types.Var {
if v == nil {
return nil
}
if v, ok := c.converted[v]; ok {
return v.(*types.Var)
}
ret := types.NewVar(
token.Pos(v.Pos()),
c.ret,
v.Name(),
c.convertType(v.Type()),
)
c.converted[v] = ret
return ret
}
示例14: genSetter
func (g *objcGen) genSetter(desc string, f *types.Var) {
t := f.Type()
if isErrorType(t) {
t = types.Typ[types.String]
}
s := &funcSummary{
name: "set" + f.Name(),
ret: "void",
params: []paramInfo{{typ: t, name: "v"}},
}
g.Printf("- %s {\n", s.asMethod(g))
g.Indent()
g.genFunc(desc+"_DESCRIPTOR_", desc+"_FIELD_"+f.Name()+"_SET_", s, true)
g.Outdent()
g.Printf("}\n\n")
}
示例15: genGetter
func (g *objcGen) genGetter(desc string, f *types.Var) {
t := f.Type()
if isErrorType(t) {
t = types.Typ[types.String]
}
s := &funcSummary{
name: lowerFirst(f.Name()),
ret: g.objcType(t),
retParams: []paramInfo{{typ: t, name: "ret_"}},
}
g.Printf("- %s {\n", s.asMethod(g))
g.Indent()
g.genFunc(desc+"_DESCRIPTOR_", desc+"_FIELD_"+f.Name()+"_GET_", s, true)
g.Outdent()
g.Printf("}\n\n")
}