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|
package lexer
import (
"strconv"
"github.com/vektah/gqlparser/ast"
)
const (
Invalid Type = iota
EOF
Bang
Dollar
Amp
ParenL
ParenR
Spread
Colon
Equals
At
BracketL
BracketR
BraceL
BraceR
Pipe
Name
Int
Float
String
BlockString
Comment
)
func (t Type) Name() string {
switch t {
case Invalid:
return "Invalid"
case EOF:
return "EOF"
case Bang:
return "Bang"
case Dollar:
return "Dollar"
case Amp:
return "Amp"
case ParenL:
return "ParenL"
case ParenR:
return "ParenR"
case Spread:
return "Spread"
case Colon:
return "Colon"
case Equals:
return "Equals"
case At:
return "At"
case BracketL:
return "BracketL"
case BracketR:
return "BracketR"
case BraceL:
return "BraceL"
case BraceR:
return "BraceR"
case Pipe:
return "Pipe"
case Name:
return "Name"
case Int:
return "Int"
case Float:
return "Float"
case String:
return "String"
case BlockString:
return "BlockString"
case Comment:
return "Comment"
}
return "Unknown " + strconv.Itoa(int(t))
}
func (t Type) String() string {
switch t {
case Invalid:
return "<Invalid>"
case EOF:
return "<EOF>"
case Bang:
return "!"
case Dollar:
return "$"
case Amp:
return "&"
case ParenL:
return "("
case ParenR:
return ")"
case Spread:
return "..."
case Colon:
return ":"
case Equals:
return "="
case At:
return "@"
case BracketL:
return "["
case BracketR:
return "]"
case BraceL:
return "{"
case BraceR:
return "}"
case Pipe:
return "|"
case Name:
return "Name"
case Int:
return "Int"
case Float:
return "Float"
case String:
return "String"
case BlockString:
return "BlockString"
case Comment:
return "Comment"
}
return "Unknown " + strconv.Itoa(int(t))
}
// Kind represents a type of token. The types are predefined as constants.
type Type int
type Token struct {
Kind Type // The token type.
Value string // The literal value consumed.
Pos ast.Position // The file and line this token was read from
}
func (t Token) String() string {
if t.Value != "" {
return t.Kind.String() + " " + strconv.Quote(t.Value)
}
return t.Kind.String()
}
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