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Index ¶
Examples ¶
Constants ¶
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Variables ¶
This section is empty.
Functions ¶
func And ¶
And parses with `parsers`. Succeeds if all parsers succeed, otherwise fails. Returns a slice with all values on success.
Example ¶
package main
import (
"fmt"
"github.com/flier/gocombine/pkg/parser/char"
"github.com/flier/gocombine/pkg/parser/choice"
)
func main() {
p := choice.And(char.Digit(), char.Char('i'))
fmt.Println(p([]rune("9i456")))
fmt.Println(p([]rune("123")))
}
Output: [57 105] [52 53 54] <nil> [49 50] [51] and, char, expected 'i', actual '2', unexpected
func Optional ¶
Optional parses `parser` and outputs `Some(value)` if it succeeds, `None` if it fails without consuming any input.
Example ¶
package main
import (
"fmt"
"github.com/flier/gocombine/pkg/parser/char"
"github.com/flier/gocombine/pkg/parser/choice"
"github.com/flier/gocombine/pkg/parser/to"
)
func main() {
p := choice.Optional(to.String(char.String("hello")))
fmt.Println(p([]rune("hello")))
fmt.Println(p([]rune("world")))
}
Output: hello [] <nil> <none> [119 111 114 108 100] <nil>
func Or ¶
Or returns a parser which attempts to parse using `parsers`.
Example ¶
package main
import (
"fmt"
"github.com/flier/gocombine/pkg/parser/char"
"github.com/flier/gocombine/pkg/parser/choice"
"github.com/flier/gocombine/pkg/parser/combinator"
"github.com/flier/gocombine/pkg/parser/to"
)
func main() {
p := choice.Or(
to.String(char.String("let")),
combinator.Map(char.Digit(), func(r rune) string { return "digit" }),
to.String(char.String("led")),
)
fmt.Println(p([]rune("let")))
fmt.Println(p([]rune("1")))
fmt.Println(p([]rune("lost")))
}
Output: let [] <nil> digit [] <nil> [115 116] or, 3 errors occurred: * map, string, cmp, expected "let", actual "lo", unexpected * map, digit, satisfy, actual 'l', unexpected * map, string, cmp, expected "led", actual "lo", unexpected
Types ¶
This section is empty.
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