106 lines
2.7 KiB
Go
106 lines
2.7 KiB
Go
package parser
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import "git.tebibyte.media/sashakoshka/arf/types"
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import "git.tebibyte.media/sashakoshka/arf/lexer"
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import "git.tebibyte.media/sashakoshka/arf/infoerr"
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// parseObjtSection parses an object type definition. This allows for structured
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// types to be defined, and for member variables to be added and overridden.
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func (parser *ParsingOperation) parseObjtSection () (
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section *ObjtSection,
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err error,
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) {
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err = parser.expect(lexer.TokenKindName)
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if err != nil { return }
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section = &ObjtSection {
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location: parser.token.Location(),
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members: make(map[string] ObjtMember),
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}
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// get permission
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err = parser.nextToken(lexer.TokenKindPermission)
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if err != nil { return }
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section.permission = parser.token.Value().(types.Permission)
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// get name
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err = parser.nextToken(lexer.TokenKindName)
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if err != nil { return }
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section.name = parser.token.Value().(string)
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// parse inherited type
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err = parser.nextToken(lexer.TokenKindColon)
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if err != nil { return }
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err = parser.nextToken()
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if err != nil { return }
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section.inherits, err = parser.parseType()
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if err != nil { return }
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err = parser.expect(lexer.TokenKindNewline)
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if err != nil { return }
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err = parser.nextToken()
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if err != nil { return }
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// parse members
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err = parser.parseObjtMembers(section)
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if len(section.members) == 0 {
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infoerr.NewError (
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section.location,
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"defining an object with no members",
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infoerr.ErrorKindWarn).Print()
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}
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return
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}
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func (parser *ParsingOperation) parseObjtMembers (
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into *ObjtSection,
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) (
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err error,
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) {
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for {
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// if we've left the block, stop parsing
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if !parser.token.Is(lexer.TokenKindIndent) { return }
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if parser.token.Value().(int) != 1 { return }
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// get permission
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err = parser.nextToken(lexer.TokenKindPermission)
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if err != nil { return }
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member := ObjtMember { }
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member.permission = parser.token.Value().(types.Permission)
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// get name
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err = parser.nextToken(lexer.TokenKindName)
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if err != nil { return }
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member.name = parser.token.Value().(string)
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// get type
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err = parser.nextToken(lexer.TokenKindColon)
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if err != nil { return }
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err = parser.nextToken()
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if err != nil { return }
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member.what, err = parser.parseType()
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if err != nil { return }
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// parse default value
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if parser.token.Is(lexer.TokenKindNewline) {
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err = parser.nextToken()
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if err != nil { return }
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member.defaultValue,
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err = parser.parseInitializationValues(1)
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if err != nil { return }
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} else {
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member.defaultValue, err = parser.parseArgument()
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if err != nil { return }
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err = parser.expect(lexer.TokenKindNewline)
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if err != nil { return }
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err = parser.nextToken()
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if err != nil { return }
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}
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// add member to object section
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into.members[member.name] = member
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}
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}
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