package parser import "git.tebibyte.media/arf/arf/types" import "git.tebibyte.media/arf/arf/lexer" import "git.tebibyte.media/arf/arf/infoerr" // parseFaceSection parses an interface section. func (parser *ParsingOperation) parseFaceSection () ( section *FaceSection, err error, ) { err = parser.expect(lexer.TokenKindName) if err != nil { return } section = &FaceSection { location: parser.token.Location(), behaviors: make(map[string] FaceBehavior), } // 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 interface err = parser.nextToken(lexer.TokenKindColon) if err != nil { return } err = parser.nextToken(lexer.TokenKindName) if err != nil { return } section.inherits, err = parser.parseIdentifier() if err != nil { return } err = parser.nextToken(lexer.TokenKindNewline) if err != nil { return } err = parser.nextToken() if err != nil { return } // parse members for { // if we've left the block, stop parsing if !parser.token.Is(lexer.TokenKindIndent) { return } if parser.token.Value().(int) != 1 { return } // parse behavior behaviorBeginning := parser.token.Location() var behavior FaceBehavior behavior, err = parser.parseFaceBehavior() // add to section _, exists := section.behaviors[behavior.name] if exists { err = infoerr.NewError ( behaviorBeginning, "multiple behaviors named " + behavior.name + " in this interface", infoerr.ErrorKindError) return } section.behaviors[behavior.name] = behavior if err != nil { return } } return } // parseFaceBehavior parses a single interface behavior. Indentation level is // assumed. func (parser *ParsingOperation) parseFaceBehavior () ( behavior FaceBehavior, err error, ) { err = parser.expect(lexer.TokenKindIndent) if err != nil { return } // get name err = parser.nextToken(lexer.TokenKindName) if err != nil { return } behavior.name = parser.token.Value().(string) err = parser.nextToken(lexer.TokenKindNewline) if err != nil { return } err = parser.nextToken() if err != nil { return } for { // if we've left the block, stop parsing if !parser.token.Is(lexer.TokenKindIndent) { return } if parser.token.Value().(int) != 2 { return } // get preceding symbol err = parser.nextToken ( lexer.TokenKindGreaterThan, lexer.TokenKindLessThan) if err != nil { return } kind := parser.token.Kind() var declaration Declaration // get name err = parser.nextToken(lexer.TokenKindName) if err != nil { return } declaration.name = parser.token.Value().(string) // parse inherited type err = parser.nextToken(lexer.TokenKindColon) if err != nil { return } err = parser.nextToken() if err != nil { return } declaration.what, err = parser.parseType() if err != nil { return } err = parser.expect(lexer.TokenKindNewline) if err != nil { return } err = parser.nextToken() if err != nil { return } if kind == lexer.TokenKindGreaterThan { behavior.inputs = append ( behavior.inputs, declaration) } else { behavior.outputs = append ( behavior.outputs, declaration) } } return }