cadey
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hlang
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use hlib

master
Cadey Ratio 2 years ago
parent
43e83607c0
commit
03d9ddbf63
5 changed files with 903 additions and 1 deletions
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  1. 2
      compile.go
  2. 12
      h/h.peg
  3. 789
      h/h_gen.go
  4. 42
      h/parser.go
  5. 59
      h/simplify.go

2
compile.go
View File

@ -12,7 +12,7 @@ import (
"time"
"github.com/eaburns/peggy/peg"
"within.website/x/h"
"tulpa.dev/hlang/h"
)
var (

12
h/h.peg
View File

@ -0,0 +1,12 @@
{
package h
import (
"github.com/eaburns/peggy/peg"
)
}
sep <- space+h
space <- ' '
h <- 'h' / "'"
H <- h+sep+ / h

789
h/h_gen.go
View File

@ -0,0 +1,789 @@
package h
import (
"github.com/eaburns/peggy/peg"
)
type _Parser struct {
text string
deltaPos []_Rules
deltaErr []_Rules
node map[_key]*peg.Node
fail map[_key]*peg.Fail
lastFail int
data interface{}
}
type _key struct {
start int
name string
}
func _NewParser(text string) *_Parser {
return &_Parser{
text: text,
deltaPos: make([]_Rules, len(text)+1),
deltaErr: make([]_Rules, len(text)+1),
node: make(map[_key]*peg.Node),
fail: make(map[_key]*peg.Fail),
}
}
type _Rules struct {
sep int32
space int32
h int32
H int32
}
func _max(a, b int) int {
if a > b {
return a
}
return b
}
func _next(parser *_Parser, pos int) (rune, int) {
r, w := peg.DecodeRuneInString(parser.text[pos:])
return r, w
}
func _node(name string) *peg.Node {
return &peg.Node{Name: name}
}
func _sub(parser *_Parser, start, end int, kids []*peg.Node) *peg.Node {
node := &peg.Node{
Text: parser.text[start:end],
Kids: make([]*peg.Node, len(kids)),
}
copy(node.Kids, kids)
return node
}
func _leaf(parser *_Parser, start, end int) *peg.Node {
return &peg.Node{Text: parser.text[start:end]}
}
func _sepAccepts(parser *_Parser, start int) (deltaPos, deltaErr int) {
if dp := parser.deltaPos[start].sep; dp != 0 {
de := parser.deltaErr[start].sep - 1
if dp > 0 {
dp--
}
return int(dp), int(de)
}
pos, perr := start, -1
// space+ h
// space+
// space
if dp, de := _spaceAccepts(parser, pos); dp < 0 {
perr = _max(perr, pos+de)
goto fail
} else {
perr = _max(perr, pos+de)
pos += dp
}
for {
pos1 := pos
// space
if dp, de := _spaceAccepts(parser, pos); dp < 0 {
perr = _max(perr, pos+de)
goto fail2
} else {
perr = _max(perr, pos+de)
pos += dp
}
continue
fail2:
pos = pos1
break
}
// h
if dp, de := _hAccepts(parser, pos); dp < 0 {
perr = _max(perr, pos+de)
goto fail
} else {
perr = _max(perr, pos+de)
pos += dp
}
parser.deltaPos[start].sep = int32(pos-start) + 1
parser.deltaErr[start].sep = int32(perr-start) + 1
parser.lastFail = perr
return pos - start, perr - start
fail:
parser.deltaPos[start].sep = -1
parser.deltaErr[start].sep = int32(perr-start) + 1
parser.lastFail = perr
return -1, perr - start
}
func _sepNode(parser *_Parser, start int) (int, *peg.Node) {
dp := parser.deltaPos[start].sep
if dp < 0 {
return -1, nil
}
key := _key{start: start, name: "sep"}
node := parser.node[key]
if node != nil {
return start + int(dp-1), node
}
pos := start
node = _node("sep")
// space+ h
// space+
// space
if p, kid := _spaceNode(parser, pos); kid == nil {
goto fail
} else {
node.Kids = append(node.Kids, kid)
pos = p
}
for {
nkids0 := len(node.Kids)
pos1 := pos
// space
if p, kid := _spaceNode(parser, pos); kid == nil {
goto fail2
} else {
node.Kids = append(node.Kids, kid)
pos = p
}
continue
fail2:
node.Kids = node.Kids[:nkids0]
pos = pos1
break
}
// h
if p, kid := _hNode(parser, pos); kid == nil {
goto fail
} else {
node.Kids = append(node.Kids, kid)
pos = p
}
node.Text = parser.text[start:pos]
parser.node[key] = node
return pos, node
fail:
return -1, nil
}
func _sepFail(parser *_Parser, start, errPos int) (int, *peg.Fail) {
if start > parser.lastFail {
return -1, &peg.Fail{}
}
dp := parser.deltaPos[start].sep
de := parser.deltaErr[start].sep
if start+int(de-1) < errPos {
if dp > 0 {
return start + int(dp-1), &peg.Fail{}
}
return -1, &peg.Fail{}
}
key := _key{start: start, name: "sep"}
failure := parser.fail[key]
if dp < 0 && failure != nil {
return -1, failure
}
if dp > 0 && failure != nil {
return start + int(dp-1), failure
}
pos := start
failure = &peg.Fail{
Name: "sep",
Pos: int(start),
}
// space+ h
// space+
// space
{
p, kid := _spaceFail(parser, pos, errPos)
if kid.Want != "" || len(kid.Kids) > 0 {
failure.Kids = append(failure.Kids, kid)
}
if p < 0 {
goto fail
}
pos = p
}
for {
pos1 := pos
// space
{
p, kid := _spaceFail(parser, pos, errPos)
if kid.Want != "" || len(kid.Kids) > 0 {
failure.Kids = append(failure.Kids, kid)
}
if p < 0 {
goto fail2
}
pos = p
}
continue
fail2:
pos = pos1
break
}
// h
{
p, kid := _hFail(parser, pos, errPos)
if kid.Want != "" || len(kid.Kids) > 0 {
failure.Kids = append(failure.Kids, kid)
}
if p < 0 {
goto fail
}
pos = p
}
parser.fail[key] = failure
return pos, failure
fail:
parser.fail[key] = failure
return -1, failure
}
func _spaceAccepts(parser *_Parser, start int) (deltaPos, deltaErr int) {
if dp := parser.deltaPos[start].space; dp != 0 {
de := parser.deltaErr[start].space - 1
if dp > 0 {
dp--
}
return int(dp), int(de)
}
pos, perr := start, -1
// " "
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != " " {
perr = _max(perr, pos)
goto fail
}
pos++
parser.deltaPos[start].space = int32(pos-start) + 1
parser.deltaErr[start].space = int32(perr-start) + 1
parser.lastFail = perr
return pos - start, perr - start
fail:
parser.deltaPos[start].space = -1
parser.deltaErr[start].space = int32(perr-start) + 1
parser.lastFail = perr
return -1, perr - start
}
func _spaceNode(parser *_Parser, start int) (int, *peg.Node) {
dp := parser.deltaPos[start].space
if dp < 0 {
return -1, nil
}
key := _key{start: start, name: "space"}
node := parser.node[key]
if node != nil {
return start + int(dp-1), node
}
pos := start
node = _node("space")
// " "
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != " " {
goto fail
}
node.Kids = append(node.Kids, _leaf(parser, pos, pos+1))
pos++
node.Text = parser.text[start:pos]
parser.node[key] = node
return pos, node
fail:
return -1, nil
}
func _spaceFail(parser *_Parser, start, errPos int) (int, *peg.Fail) {
if start > parser.lastFail {
return -1, &peg.Fail{}
}
dp := parser.deltaPos[start].space
de := parser.deltaErr[start].space
if start+int(de-1) < errPos {
if dp > 0 {
return start + int(dp-1), &peg.Fail{}
}
return -1, &peg.Fail{}
}
key := _key{start: start, name: "space"}
failure := parser.fail[key]
if dp < 0 && failure != nil {
return -1, failure
}
if dp > 0 && failure != nil {
return start + int(dp-1), failure
}
pos := start
failure = &peg.Fail{
Name: "space",
Pos: int(start),
}
// " "
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != " " {
if pos >= errPos {
failure.Kids = append(failure.Kids, &peg.Fail{
Pos: int(pos),
Want: "\" \"",
})
}
goto fail
}
pos++
parser.fail[key] = failure
return pos, failure
fail:
parser.fail[key] = failure
return -1, failure
}
func _hAccepts(parser *_Parser, start int) (deltaPos, deltaErr int) {
if dp := parser.deltaPos[start].h; dp != 0 {
de := parser.deltaErr[start].h - 1
if dp > 0 {
dp--
}
return int(dp), int(de)
}
pos, perr := start, -1
// "h"/"'"
{
pos2 := pos
// "h"
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != "h" {
perr = _max(perr, pos)
goto fail3
}
pos++
goto ok0
fail3:
pos = pos2
// "'"
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != "'" {
perr = _max(perr, pos)
goto fail4
}
pos++
goto ok0
fail4:
pos = pos2
goto fail
ok0:
}
parser.deltaPos[start].h = int32(pos-start) + 1
parser.deltaErr[start].h = int32(perr-start) + 1
parser.lastFail = perr
return pos - start, perr - start
fail:
parser.deltaPos[start].h = -1
parser.deltaErr[start].h = int32(perr-start) + 1
parser.lastFail = perr
return -1, perr - start
}
func _hNode(parser *_Parser, start int) (int, *peg.Node) {
dp := parser.deltaPos[start].h
if dp < 0 {
return -1, nil
}
key := _key{start: start, name: "h"}
node := parser.node[key]
if node != nil {
return start + int(dp-1), node
}
pos := start
node = _node("h")
// "h"/"'"
{
pos2 := pos
nkids1 := len(node.Kids)
// "h"
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != "h" {
goto fail3
}
node.Kids = append(node.Kids, _leaf(parser, pos, pos+1))
pos++
goto ok0
fail3:
node.Kids = node.Kids[:nkids1]
pos = pos2
// "'"
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != "'" {
goto fail4
}
node.Kids = append(node.Kids, _leaf(parser, pos, pos+1))
pos++
goto ok0
fail4:
node.Kids = node.Kids[:nkids1]
pos = pos2
goto fail
ok0:
}
node.Text = parser.text[start:pos]
parser.node[key] = node
return pos, node
fail:
return -1, nil
}
func _hFail(parser *_Parser, start, errPos int) (int, *peg.Fail) {
if start > parser.lastFail {
return -1, &peg.Fail{}
}
dp := parser.deltaPos[start].h
de := parser.deltaErr[start].h
if start+int(de-1) < errPos {
if dp > 0 {
return start + int(dp-1), &peg.Fail{}
}
return -1, &peg.Fail{}
}
key := _key{start: start, name: "h"}
failure := parser.fail[key]
if dp < 0 && failure != nil {
return -1, failure
}
if dp > 0 && failure != nil {
return start + int(dp-1), failure
}
pos := start
failure = &peg.Fail{
Name: "h",
Pos: int(start),
}
// "h"/"'"
{
pos2 := pos
// "h"
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != "h" {
if pos >= errPos {
failure.Kids = append(failure.Kids, &peg.Fail{
Pos: int(pos),
Want: "\"h\"",
})
}
goto fail3
}
pos++
goto ok0
fail3:
pos = pos2
// "'"
if len(parser.text[pos:]) < 1 || parser.text[pos:pos+1] != "'" {
if pos >= errPos {
failure.Kids = append(failure.Kids, &peg.Fail{
Pos: int(pos),
Want: "\"'\"",
})
}
goto fail4
}
pos++
goto ok0
fail4:
pos = pos2
goto fail
ok0:
}
parser.fail[key] = failure
return pos, failure
fail:
parser.fail[key] = failure
return -1, failure
}
func _HAccepts(parser *_Parser, start int) (deltaPos, deltaErr int) {
if dp := parser.deltaPos[start].H; dp != 0 {
de := parser.deltaErr[start].H - 1
if dp > 0 {
dp--
}
return int(dp), int(de)
}
pos, perr := start, -1
// h+ sep+/h
{
pos2 := pos
// h+ sep+
// h+
// h
if dp, de := _hAccepts(parser, pos); dp < 0 {
perr = _max(perr, pos+de)
goto fail3
} else {
perr = _max(perr, pos+de)
pos += dp
}
for {
pos5 := pos
// h
if dp, de := _hAccepts(parser, pos); dp < 0 {
perr = _max(perr, pos+de)
goto fail6
} else {
perr = _max(perr, pos+de)
pos += dp
}
continue
fail6:
pos = pos5
break
}
// sep+
// sep
if dp, de := _sepAccepts(parser, pos); dp < 0 {
perr = _max(perr, pos+de)
goto fail3
} else {
perr = _max(perr, pos+de)
pos += dp
}
for {
pos8 := pos
// sep
if dp, de := _sepAccepts(parser, pos); dp < 0 {
perr = _max(perr, pos+de)
goto fail9
} else {
perr = _max(perr, pos+de)
pos += dp
}
continue
fail9:
pos = pos8
break
}
goto ok0
fail3:
pos = pos2
// h
if dp, de := _hAccepts(parser, pos); dp < 0 {
perr = _max(perr, pos+de)
goto fail10
} else {
perr = _max(perr, pos+de)
pos += dp
}
goto ok0
fail10:
pos = pos2
goto fail
ok0:
}
parser.deltaPos[start].H = int32(pos-start) + 1
parser.deltaErr[start].H = int32(perr-start) + 1
parser.lastFail = perr
return pos - start, perr - start
fail:
parser.deltaPos[start].H = -1
parser.deltaErr[start].H = int32(perr-start) + 1
parser.lastFail = perr
return -1, perr - start
}
func _HNode(parser *_Parser, start int) (int, *peg.Node) {
dp := parser.deltaPos[start].H
if dp < 0 {
return -1, nil
}
key := _key{start: start, name: "H"}
node := parser.node[key]
if node != nil {
return start + int(dp-1), node
}
pos := start
node = _node("H")
// h+ sep+/h
{
pos2 := pos
nkids1 := len(node.Kids)
// h+ sep+
// h+
// h
if p, kid := _hNode(parser, pos); kid == nil {
goto fail3
} else {
node.Kids = append(node.Kids, kid)
pos = p
}
for {
nkids4 := len(node.Kids)
pos5 := pos
// h
if p, kid := _hNode(parser, pos); kid == nil {
goto fail6
} else {
node.Kids = append(node.Kids, kid)
pos = p
}
continue
fail6:
node.Kids = node.Kids[:nkids4]
pos = pos5
break
}
// sep+
// sep
if p, kid := _sepNode(parser, pos); kid == nil {
goto fail3
} else {
node.Kids = append(node.Kids, kid)
pos = p
}
for {
nkids7 := len(node.Kids)
pos8 := pos
// sep
if p, kid := _sepNode(parser, pos); kid == nil {
goto fail9
} else {
node.Kids = append(node.Kids, kid)
pos = p
}
continue
fail9:
node.Kids = node.Kids[:nkids7]
pos = pos8
break
}
goto ok0
fail3:
node.Kids = node.Kids[:nkids1]
pos = pos2
// h
if p, kid := _hNode(parser, pos); kid == nil {
goto fail10
} else {
node.Kids = append(node.Kids, kid)
pos = p
}
goto ok0
fail10:
node.Kids = node.Kids[:nkids1]
pos = pos2
goto fail
ok0:
}
node.Text = parser.text[start:pos]
parser.node[key] = node
return pos, node
fail:
return -1, nil
}
func _HFail(parser *_Parser, start, errPos int) (int, *peg.Fail) {
if start > parser.lastFail {
return -1, &peg.Fail{}
}
dp := parser.deltaPos[start].H
de := parser.deltaErr[start].H
if start+int(de-1) < errPos {
if dp > 0 {
return start + int(dp-1), &peg.Fail{}
}
return -1, &peg.Fail{}
}
key := _key{start: start, name: "H"}
failure := parser.fail[key]
if dp < 0 && failure != nil {
return -1, failure
}
if dp > 0 && failure != nil {
return start + int(dp-1), failure
}
pos := start
failure = &peg.Fail{
Name: "H",
Pos: int(start),
}
// h+ sep+/h
{
pos2 := pos
// h+ sep+
// h+
// h
{
p, kid := _hFail(parser, pos, errPos)
if kid.Want != "" || len(kid.Kids) > 0 {
failure.Kids = append(failure.Kids, kid)
}
if p < 0 {
goto fail3
}
pos = p
}
for {
pos5 := pos
// h
{
p, kid := _hFail(parser, pos, errPos)
if kid.Want != "" || len(kid.Kids) > 0 {
failure.Kids = append(failure.Kids, kid)
}
if p < 0 {
goto fail6
}
pos = p
}
continue
fail6:
pos = pos5
break
}
// sep+
// sep
{
p, kid := _sepFail(parser, pos, errPos)
if kid.Want != "" || len(kid.Kids) > 0 {
failure.Kids = append(failure.Kids, kid)
}
if p < 0 {
goto fail3
}
pos = p
}
for {
pos8 := pos
// sep
{
p, kid := _sepFail(parser, pos, errPos)
if kid.Want != "" || len(kid.Kids) > 0 {
failure.Kids = append(failure.Kids, kid)
}
if p < 0 {
goto fail9
}
pos = p
}
continue
fail9:
pos = pos8
break
}
goto ok0
fail3:
pos = pos2
// h
{
p, kid := _hFail(parser, pos, errPos)
if kid.Want != "" || len(kid.Kids) > 0 {
failure.Kids = append(failure.Kids, kid)
}
if p < 0 {
goto fail10
}
pos = p
}
goto ok0
fail10:
pos = pos2
goto fail
ok0:
}
parser.fail[key] = failure
return pos, failure
fail:
parser.fail[key] = failure
return -1, failure
}

42
h/parser.go
View File

@ -0,0 +1,42 @@
package h
//go:generate peggy -o h_gen.go h.peg
import (
"fmt"
"github.com/eaburns/peggy/peg"
"within.website/x/jbo/namcu"
)
func (p *_Parser) Parse() (int, bool) {
pos, perr := _HAccepts(p, 0)
return perr, pos >= 0
}
func (p *_Parser) ErrorTree(minPos int) *peg.Fail {
p.fail = make(map[_key]*peg.Fail) // reset fail memo table
_, tree := _HFail(p, 0, minPos)
return tree
}
func (p *_Parser) ParseTree() *peg.Node {
_, tree := _HNode(p, 0)
return tree
}
// Parse parses h.
// On success, the parseTree is returned.
// On failure, both the word-level and the raw, morphological errors are returned.
func Parse(text string) (*peg.Node, error) {
p := _NewParser(text)
if perr, ok := p.Parse(); !ok {
return nil, fmt.Errorf("h: gentoldra fi'o zvati fe li %s", namcu.Lerfu(perr))
}
tree := p.ParseTree()
RemoveSpace(tree)
CollapseLists(tree)
return tree, nil
}

59
h/simplify.go
View File

@ -0,0 +1,59 @@
package h
import (
"strings"
"github.com/eaburns/peggy/peg"
)
// RemoveSpace removes whitespace-only nodes.
func RemoveSpace(n *peg.Node) { removeSpace(n) }
func removeSpace(n *peg.Node) bool {
if whitespace(n.Text) {
return false
}
if len(n.Kids) == 0 {
return true
}
var kids []*peg.Node
for _, k := range n.Kids {
if removeSpace(k) {
kids = append(kids, k)
}
}
n.Kids = kids
return len(n.Kids) > 0
}
// SpaceChars is the string of all whitespace characters.
const SpaceChars = "\x20"
func whitespace(s string) bool {
for _, r := range s {
if !strings.ContainsRune(SpaceChars, r) {
return false
}
}
return true
}
// CollapseLists collapses chains of single-kid nodes.
func CollapseLists(n *peg.Node) {
if collapseLists(n) == 1 {
n.Kids = n.Kids[0].Kids
}
}
func collapseLists(n *peg.Node) int {
var kids []*peg.Node
for _, k := range n.Kids {
if gk := collapseLists(k); gk == 1 {
kids = append(kids, k.Kids[0])
} else {
kids = append(kids, k)
}
}
n.Kids = kids
return len(n.Kids)
}
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