func (linker *_Linker) linkConstantRef(script *ast.Script, constantRef *ast.ConstantRef) {
nodes := strings.Split(constantRef.Name(), ".")
if len(nodes) < 2 {
linker.errorf(ErrTypeNotFound, constantRef, "unknown constant val (%s)", constantRef.Name())
return
}
name := nodes[len(nodes)-1]
typeRef := ast.NewTypeRef(strings.Join(nodes[0:len(nodes)-1], "."))
start, end := Pos(constantRef)
_setNodePos(typeRef, start, end)
linker.linkTypeRef(script, typeRef)
if typeRef.Ref != nil {
enum := typeRef.Ref.(*ast.Enum)
for _, constant := range enum.Constants {
if constant.Name() == name {
constantRef.Value = constant
return
}
}
linker.errorf(ErrVariableName, constantRef, "unknown enum(%s) constant filed :%s", enum, name)
}
}
func (parser *Parser) expectTypeDecl(fmtstring string, args ...interface{}) (typeDecl ast.Type) {
msg := fmt.Sprintf(fmtstring, args...)
for {
token := parser.peek()
switch token.Type {
case lexer.KeyByte, lexer.KeySByte, lexer.KeyInt16, lexer.KeyUInt16,
lexer.KeyInt32, lexer.KeyUInt32, lexer.KeyInt64, lexer.KeyUInt64,
lexer.KeyFloat32, lexer.KeyFloat64, lexer.KeyString, lexer.KeyBool, lexer.KeyVoid:
typeDecl = ast.NewBuiltinType(token.Type)
_setNodePos(typeDecl, token.Start, token.End)
parser.next()
case lexer.TokenID:
name, star, end := parser.expectFullName("expect type declare")
typeDecl = ast.NewTypeRef(name)
_setNodePos(typeDecl, star, end)
default:
parser.errorf(token.Start, "%s\n\tunexpect token %s", msg, token)
continue
}
for {
if seqType, ok := parser.parseSeq(typeDecl); ok {
typeDecl = seqType
continue
}
break
}
return
}
}