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66 lines
1.3 KiB
66 lines
1.3 KiB
package scanner
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import (
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"github.com/brettlangdon/gython/token"
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)
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type Position struct {
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Line int
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Column int
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Char rune
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}
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type Positions struct {
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positions []*Position
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}
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func NewPositions() *Positions {
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return &Positions{
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positions: make([]*Position, 0),
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}
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}
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func (positions *Positions) Append(pos *Position) {
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positions.positions = append(positions.positions, pos)
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}
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func (positions *Positions) StartingLine() int {
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return positions.positions[0].Line
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}
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func (positions *Positions) EndingLine() int {
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last := len(positions.positions) - 1
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return positions.positions[last].Line
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}
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func (positions *Positions) StartingColumn() int {
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return positions.positions[0].Column
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}
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func (positions *Positions) EndingColumn() int {
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last := len(positions.positions) - 1
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return positions.positions[last].Column
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}
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func (positions *Positions) String() string {
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literal := ""
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for _, pos := range positions.positions {
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if pos.Char == EOF {
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continue
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}
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literal += string(pos.Char)
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}
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return literal
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}
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func (positions *Positions) AsToken(id token.TokenID) *token.Token {
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return &token.Token{
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ID: id,
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LineStart: positions.StartingLine(),
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ColumnStart: positions.StartingColumn(),
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LineEnd: positions.EndingLine(),
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ColumnEnd: positions.EndingColumn(),
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Literal: positions.String(),
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}
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}
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