97 lines
2.1 KiB
Go
97 lines
2.1 KiB
Go
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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// TypeKind represents what kind of type a type is.
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type TypeKind int
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const (
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// TypeKindBasic means it's a single value.
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TypeKindBasic TypeKind = iota
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// TypeKindPointer means it's a pointer
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TypeKindPointer
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// TypeKindVariableArray means it's an array of variable length.
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TypeKindVariableArray
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// TypeKindObject means it's a structured type with members.
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TypeKindObject
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)
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// Type represents a description of a type. It must eventually point to a
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// TypeSection.
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type Type struct {
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// one of these must be nil.
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actual Section
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points *Type
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mutable bool
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kind TypeKind
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// if this is greater than 1, it means that this is a fixed-length array
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// of whatever the type is. even if the type is a variable length array.
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// because literally why not.
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length uint64
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}
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// ToString returns all data stored within the type, in string form.
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func (what Type) ToString (indent int) (output string) {
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output += doIndent(indent, "type ", what.length)
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if what.mutable {
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output += " mutable"
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}
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switch what.kind {
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case TypeKindBasic:
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output += " basic"
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case TypeKindPointer:
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output += " pointer"
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case TypeKindVariableArray:
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output += " variableArray"
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case TypeKindObject:
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output += " object"
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}
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if what.points != nil {
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output += " {\n"
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output += what.points.ToString(indent + 1)
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output += doIndent(indent, "}")
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}
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if what.actual != nil {
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output += what.actual.Name()
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}
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return
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}
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// analyzeType analyzes a type specifier.
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func (analyzer AnalysisOperation) analyzeType (
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inputType parser.Type,
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) (
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outputType Type,
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err error,
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) {
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outputType.mutable = inputType.Mutable()
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if outputType.length < 1 {
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err = inputType.NewError (
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"cannot specify a length of zero",
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infoerr.ErrorKindError)
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return
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}
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// analyze type this type points to, if it exists
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if inputType.Kind() != parser.TypeKindBasic {
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var points Type
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points, err = analyzer.analyzeType(inputType.Points())
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outputType.points = &points
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}
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// TODO
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return
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}
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