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Diffstat (limited to 'spec')
-rw-r--r--spec/lexer.go25
-rw-r--r--spec/lexer_test.go14
-rw-r--r--spec/lexspec.json4
-rw-r--r--spec/parser.go35
-rw-r--r--spec/parser_test.go62
-rw-r--r--spec/syntax_error.go1
-rw-r--r--spec/vartan_lexer.go64
7 files changed, 56 insertions, 149 deletions
diff --git a/spec/lexer.go b/spec/lexer.go
index 51791be..6e9279d 100644
--- a/spec/lexer.go
+++ b/spec/lexer.go
@@ -7,7 +7,6 @@ import (
_ "embed"
"fmt"
"io"
- "strconv"
"strings"
verr "github.com/nihei9/vartan/error"
@@ -25,7 +24,6 @@ const (
tokenKindSemicolon = tokenKind(";")
tokenKindLabelMarker = tokenKind("@")
tokenKindDirectiveMarker = tokenKind("#")
- tokenKindPosition = tokenKind("$")
tokenKindExpantion = tokenKind("...")
tokenKindMetaDataMarker = tokenKind("%")
tokenKindNewline = tokenKind("newline")
@@ -48,7 +46,6 @@ func newPosition(row, col int) Position {
type token struct {
kind tokenKind
text string
- num int
pos Position
}
@@ -83,14 +80,6 @@ func newStringLiteralToken(text string, pos Position) *token {
}
}
-func newPositionToken(num int, pos Position) *token {
- return &token{
- kind: tokenKindPosition,
- num: num,
- pos: pos,
- }
-}
-
func newEOFToken() *token {
return &token{
kind: tokenKindEOF,
@@ -274,20 +263,6 @@ func (l *lexer) lexAndSkipWSs() (*token, error) {
return newSymbolToken(tokenKindLabelMarker, newPosition(tok.Row+1, tok.Col+1)), nil
case KindIDDirectiveMarker:
return newSymbolToken(tokenKindDirectiveMarker, newPosition(tok.Row+1, tok.Col+1)), nil
- case KindIDPosition:
- // Remove '$' character and convert to an integer.
- num, err := strconv.Atoi(string(tok.Lexeme)[1:])
- if err != nil {
- return nil, err
- }
- if num == 0 {
- return nil, &verr.SpecError{
- Cause: synErrZeroPos,
- Row: tok.Row + 1,
- Col: tok.Col + 1,
- }
- }
- return newPositionToken(num, newPosition(tok.Row+1, tok.Col+1)), nil
case KindIDExpansion:
return newSymbolToken(tokenKindExpantion, newPosition(tok.Row+1, tok.Col+1)), nil
case KindIDMetadataMarker:
diff --git a/spec/lexer_test.go b/spec/lexer_test.go
index 5588d0b..4fab8db 100644
--- a/spec/lexer_test.go
+++ b/spec/lexer_test.go
@@ -24,10 +24,6 @@ func TestLexer_Run(t *testing.T) {
return newSymbolToken(kind, newPosition(1, 0))
}
- posTok := func(num int) *token {
- return newPositionToken(num, newPosition(1, 0))
- }
-
invalidTok := func(text string) *token {
return newInvalidToken(text, newPosition(1, 0))
}
@@ -40,7 +36,7 @@ func TestLexer_Run(t *testing.T) {
}{
{
caption: "the lexer can recognize all kinds of tokens",
- src: `id"terminal"'string':|;@$1...#%`,
+ src: `id"terminal"'string':|;@...#%`,
tokens: []*token{
idTok("id"),
termPatTok("terminal"),
@@ -49,7 +45,6 @@ func TestLexer_Run(t *testing.T) {
symTok(tokenKindOr),
symTok(tokenKindSemicolon),
symTok(tokenKindLabelMarker),
- posTok(1),
symTok(tokenKindExpantion),
symTok(tokenKindDirectiveMarker),
symTok(tokenKindMetaDataMarker),
@@ -148,11 +143,6 @@ bar // This is the fourth comment.
err: synErrIncompletedEscSeq,
},
{
- caption: "a position must be greater than or equal to 1",
- src: `$0`,
- err: synErrZeroPos,
- },
- {
caption: "the lexer can recognize valid tokens following an invalid token",
src: `abc!!!def`,
tokens: []*token{
@@ -213,7 +203,7 @@ bar // This is the fourth comment.
func testToken(t *testing.T, tok, expected *token) {
t.Helper()
- if tok.kind != expected.kind || tok.text != expected.text || tok.num != expected.num {
+ if tok.kind != expected.kind || tok.text != expected.text {
t.Fatalf("unexpected token; want: %+v, got: %+v", expected, tok)
}
}
diff --git a/spec/lexspec.json b/spec/lexspec.json
index 838763b..ff8ff0d 100644
--- a/spec/lexspec.json
+++ b/spec/lexspec.json
@@ -110,10 +110,6 @@
"pattern": "@"
},
{
- "kind": "position",
- "pattern": "$(0|[1-9][0-9]*)"
- },
- {
"kind": "expansion",
"pattern": "\\.\\.\\."
},
diff --git a/spec/parser.go b/spec/parser.go
index a9e4d62..e092f59 100644
--- a/spec/parser.go
+++ b/spec/parser.go
@@ -55,14 +55,8 @@ type DirectiveNode struct {
}
type ParameterNode struct {
- ID string
- String string
- SymbolPosition *SymbolPositionNode
- Pos Position
-}
-
-type SymbolPositionNode struct {
- Position int
+ ID string
+ String string
Expansion bool
Pos Position
}
@@ -453,32 +447,25 @@ func (p *parser) parseDirective() *DirectiveNode {
}
func (p *parser) parseParameter() *ParameterNode {
+ var param *ParameterNode
switch {
case p.consume(tokenKindID):
- return &ParameterNode{
+ param = &ParameterNode{
ID: p.lastTok.text,
Pos: p.lastTok.pos,
}
case p.consume(tokenKindStringLiteral):
- return &ParameterNode{
+ param = &ParameterNode{
String: p.lastTok.text,
Pos: p.lastTok.pos,
}
- case p.consume(tokenKindPosition):
- symPos := &SymbolPositionNode{
- Position: p.lastTok.num,
- Pos: p.lastTok.pos,
- }
- if p.consume(tokenKindExpantion) {
- symPos.Expansion = true
- }
- return &ParameterNode{
- SymbolPosition: symPos,
- Pos: symPos.Pos,
- }
+ default:
+ return nil
}
-
- return nil
+ if p.consume(tokenKindExpantion) {
+ param.Expansion = true
+ }
+ return param
}
func (p *parser) consume(expected tokenKind) bool {
diff --git a/spec/parser_test.go b/spec/parser_test.go
index e81f95e..3cc772d 100644
--- a/spec/parser_test.go
+++ b/spec/parser_test.go
@@ -62,20 +62,9 @@ func TestParse(t *testing.T) {
ID: id,
}
}
- symPosParam := func(symPos *SymbolPositionNode) *ParameterNode {
- return &ParameterNode{
- SymbolPosition: symPos,
- }
- }
- symPos := func(symPos int, exp bool) *SymbolPositionNode {
- return &SymbolPositionNode{
- Position: symPos,
- Expansion: exp,
- }
- }
- withSymPosPos := func(symPos *SymbolPositionNode, pos Position) *SymbolPositionNode {
- symPos.Pos = pos
- return symPos
+ exp := func(param *ParameterNode) *ParameterNode {
+ param.Expansion = true
+ return param
}
withParamPos := func(param *ParameterNode, pos Position) *ParameterNode {
param.Pos = pos
@@ -393,14 +382,14 @@ s: foo; foo: "foo";
synErr: synErrSemicolonNoNewline,
},
{
- caption: "a grammar can contain 'ast' directives",
+ caption: "a grammar can contain 'ast' directives and expansion operator",
src: `
s
- : foo bar_list #ast $1 $2
+ : foo bar_list #ast foo bar_list
;
bar_list
- : bar_list bar #ast $1... $2
- | bar #ast $1
+ : bar_list bar #ast bar_list... bar
+ | bar #ast bar
;
foo: "foo";
bar: "bar";
@@ -410,17 +399,17 @@ bar: "bar";
prod("s",
withAltDir(
alt(id("foo"), id("bar_list")),
- dir("ast", symPosParam(symPos(1, false)), symPosParam(symPos(2, false))),
+ dir("ast", idParam("foo"), idParam("bar_list")),
),
),
prod("bar_list",
withAltDir(
alt(id("bar_list"), id("bar")),
- dir("ast", symPosParam(symPos(1, true)), symPosParam(symPos(2, false))),
+ dir("ast", exp(idParam("bar_list")), idParam("bar")),
),
withAltDir(
alt(id("bar")),
- dir("ast", symPosParam(symPos(1, false))),
+ dir("ast", idParam("bar")),
),
),
},
@@ -439,7 +428,7 @@ bar: "bar";
src: `
#mode default
exp
- : exp "\+" id #ast $1 $2
+ : exp "\+" id #ast exp id
| id
;
whitespace: "\u{0020}+" #skip;
@@ -462,18 +451,8 @@ fragment number: "[0-9]";
),
withDirPos(
dir("ast",
- withParamPos(
- symPosParam(
- withSymPosPos(symPos(1, false), newPos(4)),
- ),
- newPos(4),
- ),
- withParamPos(
- symPosParam(
- withSymPosPos(symPos(2, false), newPos(4)),
- ),
- newPos(4),
- ),
+ withParamPos(idParam("exp"), newPos(4)),
+ withParamPos(idParam("id"), newPos(4)),
),
newPos(4),
),
@@ -861,19 +840,8 @@ func testParameter(t *testing.T, param, expected *ParameterNode, checkPosition b
if param.String != expected.String {
t.Fatalf("unexpected string parameter; want: %v, got: %v", expected.ID, param.ID)
}
- if expected.SymbolPosition == nil && param.SymbolPosition != nil {
- t.Fatalf("unexpected symbol position parameter; want: nil, got: %+v", param.SymbolPosition)
- }
- if expected.SymbolPosition != nil {
- if param.SymbolPosition == nil {
- t.Fatalf("unexpected symbol position parameter; want: %+v, got: nil", expected.SymbolPosition)
- }
- if param.SymbolPosition.Position != expected.SymbolPosition.Position {
- t.Fatalf("unexpected symbol position; want: %v, got: %v", expected.SymbolPosition.Position, param.SymbolPosition.Position)
- }
- if checkPosition {
- testPosition(t, param.Pos, expected.Pos)
- }
+ if param.Expansion != expected.Expansion {
+ t.Fatalf("unexpected expansion; want: %v, got: %v", expected.Expansion, param.Expansion)
}
if checkPosition {
testPosition(t, param.Pos, expected.Pos)
diff --git a/spec/syntax_error.go b/spec/syntax_error.go
index 741d578..92348db 100644
--- a/spec/syntax_error.go
+++ b/spec/syntax_error.go
@@ -22,7 +22,6 @@ var (
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")
diff --git a/spec/vartan_lexer.go b/spec/vartan_lexer.go
index 3042243..8c9e7ad 100644
--- a/spec/vartan_lexer.go
+++ b/spec/vartan_lexer.go
@@ -354,17 +354,16 @@ const (
KindIDOr KindID = 9
KindIDSemicolon KindID = 10
KindIDLabelMarker KindID = 11
- KindIDPosition KindID = 12
- KindIDExpansion KindID = 13
- KindIDDirectiveMarker KindID = 14
- KindIDMetadataMarker KindID = 15
- KindIDPattern KindID = 16
- KindIDTerminalClose KindID = 17
- KindIDEscapeSymbol KindID = 18
- KindIDCharSeq KindID = 19
- KindIDEscapedQuot KindID = 20
- KindIDEscapedBackSlash KindID = 21
- KindIDStringLiteralClose KindID = 22
+ KindIDExpansion KindID = 12
+ KindIDDirectiveMarker KindID = 13
+ KindIDMetadataMarker KindID = 14
+ KindIDPattern KindID = 15
+ KindIDTerminalClose KindID = 16
+ KindIDEscapeSymbol KindID = 17
+ KindIDCharSeq KindID = 18
+ KindIDEscapedQuot KindID = 19
+ KindIDEscapedBackSlash KindID = 20
+ KindIDStringLiteralClose KindID = 21
)
const (
@@ -380,7 +379,6 @@ const (
KindNameOr = "or"
KindNameSemicolon = "semicolon"
KindNameLabelMarker = "label_marker"
- KindNamePosition = "position"
KindNameExpansion = "expansion"
KindNameDirectiveMarker = "directive_marker"
KindNameMetadataMarker = "metadata_marker"
@@ -420,8 +418,6 @@ func KindIDToName(id KindID) string {
return KindNameSemicolon
case KindIDLabelMarker:
return KindNameLabelMarker
- case KindIDPosition:
- return KindNamePosition
case KindIDExpansion:
return KindNameExpansion
case KindIDDirectiveMarker:
@@ -471,7 +467,7 @@ func NewLexSpec() *lexSpec {
pop: [][]bool{
nil,
{
- false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false,
+ false, false, false, false, false, false, false, false, false, false, false, false, false, false, false,
},
{
false, false, true, false,
@@ -483,7 +479,7 @@ func NewLexSpec() *lexSpec {
push: [][]ModeID{
nil,
{
- 0, 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0,
},
{
0, 0, 0, 0,
@@ -508,8 +504,8 @@ func NewLexSpec() *lexSpec {
nil,
{
0, 0, 1, 2, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 4, 5, 0, 12, 0, 0, 2, 6, 7,
- 8, 9, 10, 11, 12, 13, 14, 15,
+ 0, 0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 4, 5, 0, 0, 2, 6, 7, 8, 9,
+ 10, 11, 12, 13, 14,
},
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -538,7 +534,6 @@ func NewLexSpec() *lexSpec {
KindIDOr,
KindIDSemicolon,
KindIDLabelMarker,
- KindIDPosition,
KindIDExpansion,
KindIDDirectiveMarker,
KindIDMetadataMarker,
@@ -571,7 +566,6 @@ func NewLexSpec() *lexSpec {
KindNameOr,
KindNameSemicolon,
KindNameLabelMarker,
- KindNamePosition,
KindNameExpansion,
KindNameDirectiveMarker,
KindNameMetadataMarker,
@@ -592,8 +586,8 @@ func NewLexSpec() *lexSpec {
nil,
{
0, 1, 2, 3, 4, 5, 6, 7, 6, 8, 6, 9, 6, 10, 6, 11, 12, 6, 13, 14,
- 6, 15, 16, 6, 17, 18, 19, 20, 21, 22, 23, 24, 24, 25, 26, 27, 28, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
+ 6, 15, 16, 6, 17, 18, 19, 20, 21, 22, 23, 24, 24, 25, 26, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
},
{
0, 1, 2, 3, 2, 4, 2, 5, 2, 6, 2, 7, 8, 2, 9, 10, 2, 11, 12, 2,
@@ -610,8 +604,8 @@ func NewLexSpec() *lexSpec {
rowDisplacements: [][]int{
nil,
{
- 0, 236, 1574, 1575, 1576, 0, 237, 1323, 301, 1387, 365, 1291, 429, 493, 557, 1419, 621, 765, 840, 915,
- 990, 1065, 1140, 1215, 1290, 1515, 1525, 1578, 1579,
+ 0, 236, 1554, 1555, 1556, 0, 237, 1323, 301, 1387, 365, 1291, 429, 493, 557, 1419, 621, 765, 840, 915,
+ 990, 1065, 1140, 1215, 1290, 1558, 1559,
},
{
0, 0, 736, 2548, 852, 2612, 916, 2372, 980, 1044, 1108, 2839, 1172, 245, 2613, 1236, 2677, 1300, 2420, 1364,
@@ -639,7 +633,7 @@ func NewLexSpec() *lexSpec {
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 1, 1, -1, -1, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, 1, -1, 1, 1, -1, 1, -1, 1, -1, -1, -1, -1,
-1, -1, 1, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1, -1, -1, -1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, -1, -1, -1, -1, 1, -1, 1, 1, 1, 1, 1, 1, 1,
@@ -704,10 +698,9 @@ func NewLexSpec() *lexSpec {
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
- 15, 15, 15, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26,
- 26, 26, 26, 2, -1, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 15, 15, 15, 2, -1, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, 4, 27, 28, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, 4, 25, 26, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
@@ -984,13 +977,13 @@ func NewLexSpec() *lexSpec {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 11, 13, 13,
- 15, 18, 18, 18, 21, 2, 37, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 38, 46, 33, 47, 0, 39, 0, 0, 0, 0,
- 0, 0, 35, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 42, 0, 0, 0, 0,
- 43, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
+ 15, 18, 18, 18, 21, 2, 35, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 36, 43, 0, 44, 0, 37, 0, 0, 0, 0,
+ 0, 0, 33, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 38, 40, 0, 0, 0, 0,
+ 41, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 0, 0, 0, 0, 32, 0, 32, 32, 32, 32, 32, 24, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 0,
- 41, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 39, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
@@ -1050,10 +1043,9 @@ func NewLexSpec() *lexSpec {
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22,
- 22, 22, 22, 44, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
- 34, 34, 34, 2, 0, 37, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 22, 22, 22, 2, 0, 35, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 5, 36, 45, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 5, 34, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
generated by cgit v1.2.3 (git 2.49.0) at 2025-07-13 16:32:04 +0000