82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
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package analyzer
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import "git.tebibyte.media/arf/arf/types"
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import "git.tebibyte.media/arf/arf/parser"
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import "git.tebibyte.media/arf/arf/infoerr"
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// DataSection represents a global variable section.
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type DataSection struct {
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sectionBase
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what Type
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argument Argument
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}
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// ToString returns all data stored within the data section, in string form.
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func (section DataSection) ToString (indent int) (output string) {
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output += doIndent(indent, "typeSection ")
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output += section.permission.ToString() + " "
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output += section.where.ToString()
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output += "\n"
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output += section.what.ToString(indent + 1)
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if section.argument != nil {
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output += section.argument.ToString(indent + 1)
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}
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return
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}
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// analyzeDataSection analyzes a data section.
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func (analyzer analysisOperation) analyzeDataSection () (
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section Section,
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err error,
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) {
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outputSection := DataSection { }
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outputSection.where = analyzer.currentPosition
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section = &outputSection
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analyzer.addSection(section)
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inputSection := analyzer.currentSection.(parser.DataSection)
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outputSection.location = analyzer.currentSection.Location()
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if inputSection.Permission() == types.PermissionReadWrite {
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err = inputSection.NewError (
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"read-write (rw) permission not understood in this " +
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"context, try read-only (ro)",
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infoerr.ErrorKindError)
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return
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}
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outputSection.permission = inputSection.Permission()
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// get inherited type
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outputSection.what, err = analyzer.analyzeType(inputSection.Type())
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if err != nil { return }
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// data sections are only allowed to inherit type, enum, and face sections
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_, inheritsFromTypeSection := outputSection.what.actual.(*TypeSection)
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_, inheritsFromEnumSection := outputSection.what.actual.(*EnumSection)
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// _, inheritsFromFaceSection := outputSection.what.actual.(*FaceSection)
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if !inheritsFromTypeSection && inheritsFromEnumSection {
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err = inputSection.Type().NewError (
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"type sections can only inherit from type, enum, and " +
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"face sections",
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infoerr.ErrorKindError)
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return
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}
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if !inputSection.Argument().Nil() {
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outputSection.argument,
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err = analyzer.analyzeArgument(inputSection.Argument())
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if err != nil { return }
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// type check default value
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err = analyzer.typeCheck (
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outputSection.argument,
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outputSection.what)
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if err != nil { return }
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}
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outputSection.complete = true
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return
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}
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