1 //===- string.go - Stringer implementation for Type -----------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the Stringer interface for the Type type. 11 // 12 //===----------------------------------------------------------------------===// 13 14 package llvm 15 16 import "fmt" 17 18 func (t TypeKind) String() string { 19 switch t { 20 case VoidTypeKind: 21 return "VoidTypeKind" 22 case FloatTypeKind: 23 return "FloatTypeKind" 24 case DoubleTypeKind: 25 return "DoubleTypeKind" 26 case X86_FP80TypeKind: 27 return "X86_FP80TypeKind" 28 case FP128TypeKind: 29 return "FP128TypeKind" 30 case PPC_FP128TypeKind: 31 return "PPC_FP128TypeKind" 32 case LabelTypeKind: 33 return "LabelTypeKind" 34 case IntegerTypeKind: 35 return "IntegerTypeKind" 36 case FunctionTypeKind: 37 return "FunctionTypeKind" 38 case StructTypeKind: 39 return "StructTypeKind" 40 case ArrayTypeKind: 41 return "ArrayTypeKind" 42 case PointerTypeKind: 43 return "PointerTypeKind" 44 case VectorTypeKind: 45 return "VectorTypeKind" 46 case MetadataTypeKind: 47 return "MetadataTypeKind" 48 } 49 panic("unreachable") 50 } 51 52 func (t Type) String() string { 53 ts := typeStringer{s: make(map[Type]string)} 54 return ts.typeString(t) 55 } 56 57 type typeStringer struct { 58 s map[Type]string 59 } 60 61 func (ts *typeStringer) typeString(t Type) string { 62 if s, ok := ts.s[t]; ok { 63 return s 64 } 65 66 k := t.TypeKind() 67 s := k.String() 68 s = s[:len(s)-len("Kind")] 69 70 switch k { 71 case ArrayTypeKind: 72 s += fmt.Sprintf("(%v[%v])", ts.typeString(t.ElementType()), t.ArrayLength()) 73 case PointerTypeKind: 74 s += fmt.Sprintf("(%v)", ts.typeString(t.ElementType())) 75 case FunctionTypeKind: 76 params := t.ParamTypes() 77 s += "(" 78 if len(params) > 0 { 79 s += fmt.Sprintf("%v", ts.typeString(params[0])) 80 for i := 1; i < len(params); i++ { 81 s += fmt.Sprintf(", %v", ts.typeString(params[i])) 82 } 83 } 84 s += fmt.Sprintf("):%v", ts.typeString(t.ReturnType())) 85 case StructTypeKind: 86 if name := t.StructName(); name != "" { 87 ts.s[t] = "%" + name 88 s = fmt.Sprintf("%%%s: %s", name, s) 89 } 90 etypes := t.StructElementTypes() 91 s += "(" 92 if n := len(etypes); n > 0 { 93 s += ts.typeString(etypes[0]) 94 for i := 1; i < n; i++ { 95 s += fmt.Sprintf(", %v", ts.typeString(etypes[i])) 96 } 97 } 98 s += ")" 99 case IntegerTypeKind: 100 s += fmt.Sprintf("(%d bits)", t.IntTypeWidth()) 101 } 102 103 ts.s[t] = s 104 return s 105 } 106
