package parser import "git.tebibyte.media/arf/arf/types" import "git.tebibyte.media/arf/arf/lexer" import "git.tebibyte.media/arf/arf/infoerr" // parseEnumSection parses an enumerated type section. func (parser *ParsingOperation) parseEnumSection () ( section EnumSection, err error, ) { err = parser.expect(lexer.TokenKindName) if err != nil { return } section.location = parser.token.Location() // get permission err = parser.nextToken(lexer.TokenKindPermission) if err != nil { return } section.permission = parser.token.Value().(types.Permission) // get name err = parser.nextToken(lexer.TokenKindName) if err != nil { return } section.name = parser.token.Value().(string) // parse inherited type err = parser.nextToken(lexer.TokenKindColon) if err != nil { return } err = parser.nextToken() if err != nil { return } section.what, err = parser.parseType() if err != nil { return } err = parser.expect(lexer.TokenKindNewline) if err != nil { return } err = parser.nextToken() if err != nil { return } // parse members err = parser.parseEnumMembers(§ion) if err != nil { return } if len(section.members) == 0 { infoerr.NewError ( section.location, "defining an enum with no members", infoerr.ErrorKindWarn).Print() } return } // parseEnumMembers parses a list of members for an enum section. Indentation // level is assumed. func (parser *ParsingOperation) parseEnumMembers ( into *EnumSection, ) ( err error, ) { for { // if we've left the block, stop parsing if !parser.token.Is(lexer.TokenKindIndent) { return } if parser.token.Value().(int) != 1 { return } var member EnumMember member, err = parser.parseEnumMember() into.members = append(into.members, member) if err != nil { return } } } // parseEnumMember parses a single enum member. Indenttion level is assumed. func (parser *ParsingOperation) parseEnumMember () ( member EnumMember, err error, ) { err = parser.nextToken(lexer.TokenKindMinus) if err != nil { return } // get name err = parser.nextToken(lexer.TokenKindName) if err != nil { return } member.location = parser.token.Location() member.name = parser.token.Value().(string) // see if value exists err = parser.nextToken() if err != nil { return } if parser.token.Is(lexer.TokenKindNewline) { parser.nextToken() // if we have exited the member, return if !parser.token.Is(lexer.TokenKindIndent) { return } if parser.token.Value().(int) != 2 { return } err = parser.nextToken() if err != nil { return } } // get value member.argument, err = parser.parseArgument() err = parser.expect(lexer.TokenKindNewline) if err != nil { return } err = parser.nextToken() if err != nil { return } return }