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arf/analyzer/type-section.go

70 lines
2.0 KiB
Go

package analyzer
import "git.tebibyte.media/arf/arf/types"
import "git.tebibyte.media/arf/arf/parser"
import "git.tebibyte.media/arf/arf/infoerr"
// TypeSection represents a type definition section.
type TypeSection struct {
sectionBase
what Type
complete bool
// TODO: do not add members from parent type. instead have a member
// function to discern whether this type contains a particular member,
// and have it recurse all the way up the family tree. it will be the
// translator's job to worry about what members are placed where.
members []ObjectMember
}
// ObjectMember is a member of an object type.
type ObjectMember struct {
name string
// even if there is a private permission in another module, we still
// need to include it in the semantic analysis because we need to know
// how many members objects have.
permission types.Permission
what Type
}
func (member ObjectMember) ToString (indent int) (output string) {
output += doIndent (
indent,
member.name, " ",
member.permission.ToString(),
"\n")
output += member.what.ToString(indent + 1)
return
}
// ToString returns all data stored within the type section, in string form.
func (section TypeSection) ToString (indent int) (output string) {
output += doIndent(indent, "typeSection ", section.where.ToString(), "\n")
output += section.what.ToString(indent + 1)
return
}
// analyzeTypeSection analyzes a type section.
func (analyzer AnalysisOperation) analyzeTypeSection () (
section Section,
err error,
) {
inputSection := analyzer.currentSection.(parser.TypeSection)
if inputSection.Permission() == types.PermissionReadWrite {
err = inputSection.NewError (
"read-write (rw) permission not understood in this " +
"context, try read-only (ro)",
infoerr.ErrorKindError)
}
outputSection := TypeSection { }
outputSection.where = analyzer.currentPosition
outputSection.what, err = analyzer.analyzeType(inputSection.Type())
if err != nil { return }
outputSection.complete = true
return
}