blob: 741d578cd70430a2de9a788df251348bd2ca7db3 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
package spec
type SyntaxError struct {
message string
}
func newSyntaxError(message string) *SyntaxError {
return &SyntaxError{
message: message,
}
}
func (e *SyntaxError) Error() string {
return e.message
}
var (
// lexical errors
synErrAutoGenID = newSyntaxError("you cannot define an identifier beginning with an underscore")
synErrUnclosedTerminal = newSyntaxError("unclosed terminal")
synErrUnclosedString = newSyntaxError("unclosed string")
synErrIncompletedEscSeq = newSyntaxError("incompleted escape sequence; unexpected EOF following a backslash")
synErrEmptyPattern = newSyntaxError("a pattern must include at least one character")
synErrEmptyString = newSyntaxError("a string must include at least one character")
synErrZeroPos = newSyntaxError("a position must be greater than or equal to 1")
// syntax errors
synErrInvalidToken = newSyntaxError("invalid token")
synErrNoProductionName = newSyntaxError("a production name is missing")
synErrNoColon = newSyntaxError("the colon must precede alternatives")
synErrNoSemicolon = newSyntaxError("the semicolon is missing at the last of an alternative")
synErrLabelWithNoSymbol = newSyntaxError("a label must follow a symbol")
synErrNoLabel = newSyntaxError("an identifier that represents a label is missing after the label marker @")
synErrNoDirectiveName = newSyntaxError("a directive needs a name")
synErrProdDirNoNewline = newSyntaxError("a production directive must be followed by a newline")
synErrSemicolonNoNewline = newSyntaxError("a semicolon must be followed by a newline")
synErrFragmentNoPattern = newSyntaxError("a fragment needs one pattern element")
)
|
