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helpers.go
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/
helpers.go
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package abi
import (
"regexp"
"strings"
ast_pb "github.com/unpackdev/protos/dist/go/ast"
)
// normalizeStateMutability converts the provided Mutability value to its corresponding string representation.
func (b *Builder) normalizeStateMutability(m ast_pb.Mutability) string {
switch m {
case ast_pb.Mutability_PURE:
return "pure"
case ast_pb.Mutability_VIEW:
return "view"
case ast_pb.Mutability_NONPAYABLE:
return "nonpayable"
case ast_pb.Mutability_PAYABLE:
return "payable"
default:
return "view"
}
}
// isMappingType checks if the given type name represents a mapping type in Solidity.
func isMappingType(name string) bool {
return strings.Contains(name, "mapping")
}
// isContractType checks if the given type name represents a contract type in Solidity.
func isContractType(name string) bool {
return strings.Contains(name, "contract")
}
// isStructType checks if the given type name represents a enum type in Solidity.
func isEnumType(name string) bool {
return strings.Contains(name, "enum")
}
// isStructType checks if the given type name represents a enum type in Solidity.
func isStructType(name string) bool {
return strings.Contains(name, "struct")
}
// parseMappingType parses a Solidity ABI mapping type.
// It returns a boolean indicating success, a slice of key types, and a slice of value types.
func parseMappingType(typeName string) (bool, []string, []string) {
re := regexp.MustCompile(`mapping\((\w+)\s*=>\s*(.+)\)`)
matches := re.FindStringSubmatch(typeName)
if len(matches) < 3 {
return false, []string{}, []string{}
}
input := []string{matches[1]}
output := []string{matches[2]}
if isMappingType(output[0]) {
_, nestedInput, nestedOutput := parseMappingType(output[0])
input = append(input, nestedInput...)
output = nestedOutput
}
return true, input, output
}
// normalizeTypeName normalizes a Solidity type name to its canonical form.
func normalizeTypeName(typeName string) string {
isArray, _ := regexp.MatchString(`\[\d+\]`, typeName)
isSlice := strings.HasPrefix(typeName, "[]")
isSliceRight := strings.HasSuffix(typeName, "[]")
switch {
case isArray:
numberPart := typeName[strings.Index(typeName, "[")+1 : strings.Index(typeName, "]")]
typePart := typeName[strings.Index(typeName, "]")+1:]
return "[" + numberPart + "]" + normalizeTypeName(typePart)
case isSlice:
typePart := typeName[2:]
return "[]" + normalizeTypeName(typePart)
case isSliceRight:
typePart := typeName[:len(typeName)-2]
return normalizeTypeName(typePart) + "[]"
case strings.HasPrefix(typeName, "int_const"):
return "int256"
case strings.HasPrefix(typeName, "uint"):
if typeName == "uint" {
return "uint256"
}
return typeName
case strings.HasPrefix(typeName, "int"):
if typeName == "int" {
return "int256"
}
return typeName
case strings.HasPrefix(typeName, "enum"):
return "uint8"
case strings.HasPrefix(typeName, "bool"):
return typeName
case strings.HasPrefix(typeName, "bytes"):
return typeName
case typeName == "string":
return "string"
case typeName == "address":
return "address"
case typeName == "addresspayable":
return "address"
case typeName == "tuple":
return "tuple"
default:
return typeName
}
}
// normalizeTypeNameWithStatus normalizes a Solidity type name and returns a boolean indicating if the type is recognized.
func normalizeTypeNameWithStatus(typeName string) (string, bool) {
isArray, _ := regexp.MatchString(`\[\d+\]`, typeName)
isSlice := strings.HasPrefix(typeName, "[]")
isSliceRight := strings.HasSuffix(typeName, "[]")
switch {
case isArray:
numberPart := typeName[strings.Index(typeName, "[")+1 : strings.Index(typeName, "]")]
typePart := typeName[strings.Index(typeName, "]")+1:]
return "[" + numberPart + "]" + normalizeTypeName(typePart), true
case isSlice:
typePart := typeName[2:]
return "[]" + normalizeTypeName(typePart), true
case isSliceRight:
typePart := typeName[:len(typeName)-2]
return normalizeTypeName(typePart) + "[]", true
case strings.HasPrefix(typeName, "uint"):
if typeName == "uint" {
return "uint256", true
}
return typeName, true
case strings.HasPrefix(typeName, "int"):
if typeName == "int" {
return "int256", true
}
return typeName, true
case strings.HasPrefix(typeName, "enum"):
return "uint8", true
case strings.HasPrefix(typeName, "bool"):
return typeName, true
case strings.HasPrefix(typeName, "bytes"):
return typeName, true
case typeName == "string":
return "string", true
case typeName == "address":
return "address", true
case typeName == "addresspayable":
return "address", true
case typeName == "tuple":
return "tuple", true
default:
return typeName, false
}
}