github.com/goplus/gox@v1.14.13-0.20240308130321-6ff7f61cfae8/c_test.go (about) 1 /* 2 Copyright 2022 The GoPlus Authors (goplus.org) 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 http://www.apache.org/licenses/LICENSE-2.0 7 Unless required by applicable law or agreed to in writing, software 8 distributed under the License is distributed on an "AS IS" BASIS, 9 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 10 See the License for the specific language governing permissions and 11 limitations under the License. 12 */ 13 14 package gox_test 15 16 import ( 17 "go/token" 18 "go/types" 19 "testing" 20 21 "github.com/goplus/gox" 22 ) 23 24 // ---------------------------------------------------------------------------- 25 26 func TestBitFields(t *testing.T) { 27 pkg := newMainPackage() 28 fields := []*types.Var{ 29 types.NewField(token.NoPos, pkg.Types, "x", types.Typ[types.Int], false), 30 types.NewField(token.NoPos, pkg.Types, "y", types.Typ[types.Uint], false), 31 } 32 tyT := pkg.NewType("T").InitType(pkg, types.NewStruct(fields, nil)) 33 pkg.SetVFields(tyT, gox.NewBitFields([]*gox.BitField{ 34 {Name: "z1", FldName: "x", Off: 0, Bits: 1}, 35 {Name: "z2", FldName: "x", Off: 1, Bits: 3}, 36 {Name: "u1", FldName: "y", Off: 0, Bits: 1}, 37 {Name: "u2", FldName: "y", Off: 1, Bits: 3}, 38 })) 39 cb := pkg.NewFunc(nil, "test", nil, nil, false).BodyStart(pkg). 40 NewVar(tyT, "a"). 41 NewVarStart(types.Typ[types.Int], "z"). 42 VarVal("a").MemberVal("z1").UnaryOp(token.SUB). 43 VarVal("a").MemberVal("z2"). 44 BinaryOp(token.MUL).EndInit(1). 45 NewVarStart(types.Typ[types.Uint], "u"). 46 VarVal("a").MemberVal("u1").UnaryOp(token.XOR). 47 VarVal("a").MemberVal("u2"). 48 BinaryOp(token.MUL).EndInit(1). 49 VarVal("a").MemberRef("z1").Val(1).Assign(1). 50 VarVal("a").MemberRef("z2").Val(1).Assign(1). 51 End() 52 domTest(t, pkg, `package main 53 54 type T struct { 55 x int 56 y uint 57 } 58 59 func test() { 60 var a T 61 var z int = -(a.x << 63 >> 63) * (a.x << 60 >> 61) 62 var u uint = ^(a.y & 1) * (a.y >> 1 & 7) 63 { 64 _autoGo_1 := &a.x 65 *_autoGo_1 = *_autoGo_1&^1 | 1&1 66 } 67 { 68 _autoGo_2 := &a.x 69 *_autoGo_2 = *_autoGo_2&^14 | 1&7<<1 70 } 71 } 72 `) 73 cb.NewVar(tyT, "a").VarVal("a") 74 func() { 75 defer func() { 76 if e := recover(); e == nil { 77 t.Fatal("TestBitFields: no error?") 78 } 79 }() 80 cb.MemberVal("z3") 81 }() 82 func() { 83 defer func() { 84 if e := recover(); e == nil { 85 t.Fatal("TestBitFields: no error?") 86 } 87 }() 88 cb.MemberRef("z3") 89 }() 90 } 91 92 func TestUnionFields(t *testing.T) { 93 pkg := newMainPackage() 94 fields := []*types.Var{ 95 types.NewField(token.NoPos, pkg.Types, "x", types.Typ[types.Int], false), 96 types.NewField(token.NoPos, pkg.Types, "y", types.Typ[types.String], false), 97 } 98 tyT := pkg.NewType("T").InitType(pkg, types.NewStruct(fields, nil)) 99 tyFlt := types.Typ[types.Float32] 100 pkg.SetVFields(tyT, gox.NewUnionFields([]*gox.UnionField{ 101 {Name: "z", Type: tyFlt}, 102 {Name: "val", Type: tyFlt, Off: 4}, 103 })) 104 barFields := []*types.Var{ 105 types.NewField(token.NoPos, pkg.Types, "a", types.Typ[types.Int], false), 106 types.NewField(token.NoPos, pkg.Types, "T", tyT, true), 107 } 108 tyBar := pkg.NewType("Bar").InitType(pkg, types.NewStruct(barFields, nil)) 109 cb := pkg.NewFunc(nil, "test", nil, nil, false).BodyStart(pkg). 110 NewVar(tyT, "a").NewVar(types.NewPointer(tyT), "b"). 111 NewVar(tyBar, "bara").NewVar(types.NewPointer(tyBar), "barb"). 112 NewVarStart(tyFlt, "z").VarVal("a").MemberVal("z").EndInit(1). 113 NewVarStart(tyFlt, "val").VarVal("a").MemberVal("val").EndInit(1). 114 NewVarStart(tyFlt, "z2").VarVal("b").MemberVal("z").EndInit(1). 115 NewVarStart(tyFlt, "val2").VarVal("b").MemberVal("val").EndInit(1). 116 NewVarStart(tyFlt, "barz").Val(ctxRef(pkg, "bara")).MemberVal("z").EndInit(1). 117 NewVarStart(tyFlt, "barval").Val(ctxRef(pkg, "bara")).MemberVal("val").EndInit(1). 118 NewVarStart(tyFlt, "barz2").Val(ctxRef(pkg, "barb")).MemberVal("z").EndInit(1). 119 NewVarStart(tyFlt, "barval2").Val(ctxRef(pkg, "barb")).MemberVal("val").EndInit(1). 120 VarVal("a").MemberRef("z").Val(1).Assign(1). 121 Val(ctxRef(pkg, "barb")).MemberRef("val").Val(1.2).Assign(1). 122 End() 123 domTest(t, pkg, `package main 124 125 import "unsafe" 126 127 type T struct { 128 x int 129 y string 130 } 131 type Bar struct { 132 a int 133 T 134 } 135 136 func test() { 137 var a T 138 var b *T 139 var bara Bar 140 var barb *Bar 141 var z float32 = *(*float32)(unsafe.Pointer(&a)) 142 var val float32 = *(*float32)(unsafe.Pointer(uintptr(unsafe.Pointer(&a)) + 4)) 143 var z2 float32 = *(*float32)(unsafe.Pointer(b)) 144 var val2 float32 = *(*float32)(unsafe.Pointer(uintptr(unsafe.Pointer(b)) + 4)) 145 var barz float32 = *(*float32)(unsafe.Pointer(&bara.T)) 146 var barval float32 = *(*float32)(unsafe.Pointer(uintptr(unsafe.Pointer(&bara.T)) + 4)) 147 var barz2 float32 = *(*float32)(unsafe.Pointer(&barb.T)) 148 var barval2 float32 = *(*float32)(unsafe.Pointer(uintptr(unsafe.Pointer(&barb.T)) + 4)) 149 *(*float32)(unsafe.Pointer(&a)) = 1 150 *(*float32)(unsafe.Pointer(uintptr(unsafe.Pointer(&barb.T)) + 4)) = 1.2 151 } 152 `) 153 defer func() { 154 if e := recover(); e == nil { 155 t.Fatal("TestUnionFields: no error?") 156 } 157 }() 158 cb.NewVar(tyT, "a").VarVal("a").MemberVal("unknown") 159 } 160 161 // ---------------------------------------------------------------------------- 162 163 func TestCFunc(t *testing.T) { 164 pkg := newMainPackage() 165 cfn := gox.NewCSignature(nil, nil, false) 166 pkg.NewFunc(nil, "test", nil, nil, false).BodyStart(pkg). 167 NewVar(cfn, "f"). 168 VarVal("f").Call(0).EndStmt(). 169 End() 170 domTest(t, pkg, `package main 171 172 func test() { 173 var f func() 174 f() 175 } 176 `) 177 } 178 179 // ----------------------------------------------------------------------------