salix/parser/parser.go

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// Code generated by pigeon; DO NOT EDIT.
package parser
import (
"bytes"
"errors"
"fmt"
"io"
"math"
"os"
"sort"
"strconv"
"strings"
"unicode"
"unicode/utf8"
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"go.elara.ws/salix/ast"
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)
func toAnySlice(v any) []any {
if v == nil {
return nil
}
return v.([]any)
}
func toNodeSlice(v any) []ast.Node {
if v == nil {
return nil
}
return v.([]ast.Node)
}
func getPos(c *current) ast.Position {
return ast.Position{
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Name: c.globalStore["name"].(string),
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Line: c.pos.line,
Col: c.pos.col,
}
}
func toExpr(c *current, first, rest any) ast.Node {
restSlice := toAnySlice(rest)
if len(restSlice) == 0 {
return first.(ast.Node)
}
out := ast.Expr{First: first.(ast.Node), Position: getPos(c)}
for _, restValue := range restSlice {
valueSlice := toAnySlice(restValue)
out.Rest = append(out.Rest, ast.Expr{
Operator: valueSlice[1].(ast.Operator),
First: valueSlice[3].(ast.Node),
Position: valueSlice[3].(ast.Node).Pos(),
})
}
return out
}
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var g = &grammar{
rules: []*rule{
{
name: "Root",
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pos: position{line: 53, col: 1, offset: 1001},
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expr: &actionExpr{
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pos: position{line: 53, col: 8, offset: 1008},
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run: (*parser).callonRoot1,
expr: &labeledExpr{
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pos: position{line: 53, col: 8, offset: 1008},
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label: "items",
expr: &zeroOrMoreExpr{
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pos: position{line: 53, col: 14, offset: 1014},
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expr: &choiceExpr{
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pos: position{line: 53, col: 15, offset: 1015},
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alternatives: []any{
&ruleRefExpr{
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pos: position{line: 53, col: 15, offset: 1015},
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name: "Tag",
},
&ruleRefExpr{
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pos: position{line: 53, col: 21, offset: 1021},
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name: "ExprTag",
},
&actionExpr{
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pos: position{line: 71, col: 10, offset: 1455},
run: (*parser).callonRoot7,
expr: &seqExpr{
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pos: position{line: 71, col: 10, offset: 1455},
exprs: []any{
&litMatcher{
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pos: position{line: 71, col: 10, offset: 1455},
val: "#!",
ignoreCase: false,
want: "\"#!\"",
},
&labeledExpr{
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pos: position{line: 71, col: 15, offset: 1460},
label: "name",
expr: &actionExpr{
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pos: position{line: 215, col: 9, offset: 5217},
run: (*parser).callonRoot11,
expr: &seqExpr{
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pos: position{line: 215, col: 9, offset: 5217},
exprs: []any{
&charClassMatcher{
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pos: position{line: 215, col: 9, offset: 5217},
val: "[a-z]i",
ranges: []rune{'a', 'z'},
ignoreCase: true,
inverted: false,
},
&zeroOrMoreExpr{
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pos: position{line: 215, col: 16, offset: 5224},
expr: &charClassMatcher{
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pos: position{line: 215, col: 16, offset: 5224},
val: "[_a-z0-9]i",
chars: []rune{'_'},
ranges: []rune{'a', 'z', '0', '9'},
ignoreCase: true,
inverted: false,
},
},
},
},
},
},
},
},
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},
&actionExpr{
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pos: position{line: 295, col: 8, offset: 6924},
run: (*parser).callonRoot16,
expr: &seqExpr{
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pos: position{line: 295, col: 8, offset: 6924},
exprs: []any{
&anyMatcher{
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line: 295, col: 8, offset: 6924,
},
&zeroOrMoreExpr{
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pos: position{line: 295, col: 10, offset: 6926},
expr: &charClassMatcher{
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pos: position{line: 295, col: 10, offset: 6926},
val: "[^#]",
chars: []rune{'#'},
ignoreCase: false,
inverted: true,
},
},
},
},
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},
},
},
},
},
},
leader: false,
leftRecursive: false,
},
{
name: "Tag",
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pos: position{line: 62, col: 1, offset: 1226},
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expr: &actionExpr{
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pos: position{line: 62, col: 7, offset: 1232},
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run: (*parser).callonTag1,
expr: &seqExpr{
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pos: position{line: 62, col: 7, offset: 1232},
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exprs: []any{
&litMatcher{
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pos: position{line: 62, col: 7, offset: 1232},
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val: "#",
ignoreCase: false,
want: "\"#\"",
},
&labeledExpr{
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pos: position{line: 62, col: 11, offset: 1236},
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label: "name",
expr: &actionExpr{
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pos: position{line: 215, col: 9, offset: 5217},
run: (*parser).callonTag5,
expr: &seqExpr{
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pos: position{line: 215, col: 9, offset: 5217},
exprs: []any{
&charClassMatcher{
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pos: position{line: 215, col: 9, offset: 5217},
val: "[a-z]i",
ranges: []rune{'a', 'z'},
ignoreCase: true,
inverted: false,
},
&zeroOrMoreExpr{
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pos: position{line: 215, col: 16, offset: 5224},
expr: &charClassMatcher{
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pos: position{line: 215, col: 16, offset: 5224},
val: "[_a-z0-9]i",
chars: []rune{'_'},
ranges: []rune{'a', 'z', '0', '9'},
ignoreCase: true,
inverted: false,
},
},
},
},
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},
},
&labeledExpr{
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pos: position{line: 62, col: 22, offset: 1247},
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label: "params",
expr: &zeroOrOneExpr{
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pos: position{line: 62, col: 29, offset: 1254},
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expr: &ruleRefExpr{
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pos: position{line: 62, col: 29, offset: 1254},
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name: "ParamList",
},
},
},
&labeledExpr{
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pos: position{line: 62, col: 40, offset: 1265},
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label: "body",
expr: &zeroOrOneExpr{
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pos: position{line: 62, col: 45, offset: 1270},
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expr: &litMatcher{
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pos: position{line: 62, col: 45, offset: 1270},
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val: ":",
ignoreCase: false,
want: "\":\"",
},
},
},
},
},
},
leader: false,
leftRecursive: false,
},
{
name: "ExprTag",
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pos: position{line: 78, col: 1, offset: 1575},
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expr: &actionExpr{
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pos: position{line: 78, col: 11, offset: 1585},
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run: (*parser).callonExprTag1,
expr: &seqExpr{
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pos: position{line: 78, col: 11, offset: 1585},
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exprs: []any{
&litMatcher{
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pos: position{line: 78, col: 11, offset: 1585},
val: "#",
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ignoreCase: false,
want: "\"#\"",
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},
&labeledExpr{
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pos: position{line: 78, col: 15, offset: 1589},
label: "ignoreErr",
expr: &zeroOrOneExpr{
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pos: position{line: 78, col: 25, offset: 1599},
expr: &litMatcher{
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pos: position{line: 78, col: 25, offset: 1599},
val: "?",
ignoreCase: false,
want: "\"?\"",
},
},
},
&litMatcher{
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pos: position{line: 78, col: 30, offset: 1604},
val: "(",
ignoreCase: false,
want: "\"(\"",
},
&labeledExpr{
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pos: position{line: 78, col: 34, offset: 1608},
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label: "item",
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expr: &ruleRefExpr{
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pos: position{line: 78, col: 39, offset: 1613},
name: "Expr",
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},
},
&litMatcher{
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pos: position{line: 78, col: 44, offset: 1618},
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val: ")",
ignoreCase: false,
want: "\")\"",
},
},
},
},
leader: false,
leftRecursive: false,
},
{
name: "Expr",
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pos: position{line: 86, col: 1, offset: 1771},
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expr: &choiceExpr{
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pos: position{line: 86, col: 8, offset: 1778},
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alternatives: []any{
&ruleRefExpr{
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pos: position{line: 86, col: 8, offset: 1778},
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name: "Assignment",
},
&ruleRefExpr{
pos: position{line: 86, col: 21, offset: 1791},
name: "TernaryExpr",
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},
},
},
leader: false,
leftRecursive: false,
},
{
name: "Assignable",
pos: position{line: 87, col: 1, offset: 1803},
expr: &ruleRefExpr{
pos: position{line: 87, col: 14, offset: 1816},
name: "TernaryExpr",
},
leader: false,
leftRecursive: false,
},
{
name: "TernaryExpr",
pos: position{line: 89, col: 1, offset: 1829},
expr: &actionExpr{
pos: position{line: 89, col: 15, offset: 1843},
run: (*parser).callonTernaryExpr1,
expr: &seqExpr{
pos: position{line: 89, col: 15, offset: 1843},
exprs: []any{
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
},
&labeledExpr{
pos: position{line: 89, col: 17, offset: 1845},
label: "cond",
expr: &ruleRefExpr{
pos: position{line: 89, col: 22, offset: 1850},
name: "LogicalExpr",
},
},
&labeledExpr{
pos: position{line: 89, col: 34, offset: 1862},
label: "vals",
expr: &zeroOrOneExpr{
pos: position{line: 89, col: 39, offset: 1867},
expr: &seqExpr{
pos: position{line: 89, col: 40, offset: 1868},
exprs: []any{
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
},
&litMatcher{
pos: position{line: 89, col: 42, offset: 1870},
val: "?",
ignoreCase: false,
want: "\"?\"",
},
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
},
&ruleRefExpr{
pos: position{line: 89, col: 48, offset: 1876},
name: "Value",
},
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
},
&litMatcher{
pos: position{line: 89, col: 56, offset: 1884},
val: ":",
ignoreCase: false,
want: "\":\"",
},
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
},
&ruleRefExpr{
pos: position{line: 89, col: 62, offset: 1890},
name: "Value",
},
},
},
},
},
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},
},
},
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leader: false,
leftRecursive: false,
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},
{
name: "LogicalExpr",
pos: position{line: 102, col: 1, offset: 2161},
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expr: &actionExpr{
pos: position{line: 102, col: 15, offset: 2175},
run: (*parser).callonLogicalExpr1,
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expr: &seqExpr{
pos: position{line: 102, col: 15, offset: 2175},
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exprs: []any{
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
},
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&labeledExpr{
pos: position{line: 102, col: 17, offset: 2177},
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label: "first",
expr: &ruleRefExpr{
pos: position{line: 102, col: 23, offset: 2183},
name: "ComparisonExpr",
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},
},
&labeledExpr{
pos: position{line: 102, col: 38, offset: 2198},
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label: "rest",
expr: &zeroOrMoreExpr{
pos: position{line: 102, col: 43, offset: 2203},
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expr: &seqExpr{
pos: position{line: 102, col: 44, offset: 2204},
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exprs: []any{
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
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},
&actionExpr{
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pos: position{line: 270, col: 13, offset: 6421},
run: (*parser).callonLogicalExpr12,
expr: &choiceExpr{
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pos: position{line: 270, col: 14, offset: 6422},
alternatives: []any{
&litMatcher{
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pos: position{line: 270, col: 14, offset: 6422},
val: "||",
ignoreCase: false,
want: "\"||\"",
},
&litMatcher{
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pos: position{line: 270, col: 21, offset: 6429},
val: "&&",
ignoreCase: false,
want: "\"&&\"",
},
},
},
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},
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
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},
&ruleRefExpr{
pos: position{line: 102, col: 58, offset: 2218},
name: "ComparisonExpr",
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},
},
},
},
},
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
},
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},
},
},
leader: false,
leftRecursive: false,
},
{
name: "ComparisonExpr",
pos: position{line: 106, col: 1, offset: 2281},
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expr: &actionExpr{
pos: position{line: 106, col: 18, offset: 2298},
run: (*parser).callonComparisonExpr1,
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expr: &seqExpr{
pos: position{line: 106, col: 18, offset: 2298},
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exprs: []any{
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
},
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&labeledExpr{
pos: position{line: 106, col: 20, offset: 2300},
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label: "first",
expr: &ruleRefExpr{
pos: position{line: 106, col: 26, offset: 2306},
name: "ArithmeticExpr",
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},
},
&labeledExpr{
pos: position{line: 106, col: 41, offset: 2321},
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label: "rest",
expr: &zeroOrMoreExpr{
pos: position{line: 106, col: 46, offset: 2326},
2023-10-29 01:10:17 +00:00
expr: &seqExpr{
pos: position{line: 106, col: 47, offset: 2327},
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exprs: []any{
&zeroOrMoreExpr{
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pos: position{line: 297, col: 18, offset: 7012},
expr: &charClassMatcher{
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pos: position{line: 297, col: 18, offset: 7012},
val: "[ \\t\\r\\n]",
chars: []rune{' ', '\t', '\r', '\n'},
ignoreCase: false,
inverted: false,
},
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},
&actionExpr{
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pos: position{line: 277, col: 16, offset: 6554},
run: (*parser).callonComparisonExpr12,
expr: &choiceExpr{
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pos: position{line: 277, col: 17, offset: 6555},
alternatives: []any{
&litMatcher{
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pos: position{line: 277, col: 17, offset: 6555},
val: "==",
ignoreCase: false,
want: "\"==\"",
},
&litMatcher{
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pos: position{line: 277, col: 24, offset: 6562},
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val: "!=",
ignoreCase: false,
want: "\"!=\"",
},
&litMatcher{
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pos: position{line: 277, col: 31, offset: 6569},
val: "<=",
ignoreCase: false,
want: "\"<=\"",
},
&litMatcher{
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pos: position{line: 277, col: 38, offset: 6576},
val: ">=",
ignoreCase: false,
want: "\">=\"",
},
&charClassMatcher{
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pos: position{line: 277, col: 45, offset: 6583},
val: "[<>]",
chars: []rune{'<', '>'},
ignoreCase: false,
inverted: false,
},
&litMatcher{
2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2023-10-30 22:10:55 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 22:10:55 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2023-10-29 01:10:17 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2024-06-07 02:06:45 +00:00
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2024-03-07 22:06:59 +00:00
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2023-10-30 15:52:02 +00:00
{
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
expr: &actionExpr{
2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
run: (*parser).callonVariableOr1,
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
label: "variable",
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
run: (*parser).callonVariableOr4,
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-30 15:52:02 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
run: (*parser).callonAssignment1,
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
run: (*parser).callonAssignment4,
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-31 20:45:00 +00:00
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2023-10-30 15:52:02 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
expr: &actionExpr{
2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
run: (*parser).callonMethodCall1,
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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2024-06-07 02:06:45 +00:00
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2023-10-29 01:10:17 +00:00
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ignoreCase: false,
want: "\".\"",
},
&labeledExpr{
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pos: position{line: 190, col: 30, offset: 4633},
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label: "name",
expr: &actionExpr{
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pos: position{line: 215, col: 9, offset: 5217},
run: (*parser).callonMethodCall7,
expr: &seqExpr{
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pos: position{line: 215, col: 9, offset: 5217},
exprs: []any{
&charClassMatcher{
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pos: position{line: 215, col: 9, offset: 5217},
val: "[a-z]i",
ranges: []rune{'a', 'z'},
ignoreCase: true,
inverted: false,
},
&zeroOrMoreExpr{
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pos: position{line: 215, col: 16, offset: 5224},
expr: &charClassMatcher{
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pos: position{line: 215, col: 16, offset: 5224},
val: "[_a-z0-9]i",
chars: []rune{'_'},
ranges: []rune{'a', 'z', '0', '9'},
ignoreCase: true,
inverted: false,
},
},
},
},
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},
},
&labeledExpr{
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pos: position{line: 190, col: 41, offset: 4644},
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label: "params",
expr: &ruleRefExpr{
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pos: position{line: 190, col: 48, offset: 4651},
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name: "ParamList",
},
},
},
},
},
leader: false,
leftRecursive: true,
},
{
name: "Index",
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pos: position{line: 199, col: 1, offset: 4844},
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expr: &actionExpr{
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pos: position{line: 199, col: 9, offset: 4852},
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run: (*parser).callonIndex1,
expr: &seqExpr{
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pos: position{line: 199, col: 9, offset: 4852},
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exprs: []any{
&labeledExpr{
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pos: position{line: 199, col: 9, offset: 4852},
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label: "value",
expr: &ruleRefExpr{
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pos: position{line: 199, col: 15, offset: 4858},
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name: "Value",
},
},
&litMatcher{
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pos: position{line: 199, col: 21, offset: 4864},
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val: "[",
ignoreCase: false,
want: "\"[\"",
},
&labeledExpr{
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pos: position{line: 199, col: 25, offset: 4868},
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label: "index",
expr: &ruleRefExpr{
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pos: position{line: 199, col: 31, offset: 4874},
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name: "Value",
},
},
&litMatcher{
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pos: position{line: 199, col: 37, offset: 4880},
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val: "]",
ignoreCase: false,
want: "\"]\"",
},
},
},
},
leader: false,
leftRecursive: true,
},
{
name: "FieldAccess",
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pos: position{line: 207, col: 1, offset: 5023},
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expr: &actionExpr{
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pos: position{line: 207, col: 15, offset: 5037},
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run: (*parser).callonFieldAccess1,
expr: &seqExpr{
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pos: position{line: 207, col: 15, offset: 5037},
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exprs: []any{
&labeledExpr{
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pos: position{line: 207, col: 15, offset: 5037},
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label: "value",
expr: &ruleRefExpr{
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pos: position{line: 207, col: 21, offset: 5043},
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name: "Value",
},
},
&litMatcher{
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pos: position{line: 207, col: 27, offset: 5049},
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val: ".",
ignoreCase: false,
want: "\".\"",
},
&labeledExpr{
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pos: position{line: 207, col: 31, offset: 5053},
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label: "name",
expr: &actionExpr{
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pos: position{line: 215, col: 9, offset: 5217},
run: (*parser).callonFieldAccess7,
expr: &seqExpr{
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pos: position{line: 215, col: 9, offset: 5217},
exprs: []any{
&charClassMatcher{
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pos: position{line: 215, col: 9, offset: 5217},
val: "[a-z]i",
ranges: []rune{'a', 'z'},
ignoreCase: true,
inverted: false,
},
&zeroOrMoreExpr{
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pos: position{line: 215, col: 16, offset: 5224},
expr: &charClassMatcher{
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pos: position{line: 215, col: 16, offset: 5224},
val: "[_a-z0-9]i",
chars: []rune{'_'},
ranges: []rune{'a', 'z', '0', '9'},
ignoreCase: true,
inverted: false,
},
},
},
},
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},
},
},
},
},
leader: false,
leftRecursive: true,
},
{
name: "FuncCall",
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pos: position{line: 222, col: 1, offset: 5338},
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expr: &actionExpr{
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pos: position{line: 222, col: 12, offset: 5349},
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run: (*parser).callonFuncCall1,
expr: &seqExpr{
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pos: position{line: 222, col: 12, offset: 5349},
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exprs: []any{
&labeledExpr{
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pos: position{line: 222, col: 12, offset: 5349},
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label: "name",
expr: &actionExpr{
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pos: position{line: 215, col: 9, offset: 5217},
run: (*parser).callonFuncCall4,
expr: &seqExpr{
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pos: position{line: 215, col: 9, offset: 5217},
exprs: []any{
&charClassMatcher{
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pos: position{line: 215, col: 9, offset: 5217},
val: "[a-z]i",
ranges: []rune{'a', 'z'},
ignoreCase: true,
inverted: false,
},
&zeroOrMoreExpr{
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pos: position{line: 215, col: 16, offset: 5224},
expr: &charClassMatcher{
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pos: position{line: 215, col: 16, offset: 5224},
val: "[_a-z0-9]i",
chars: []rune{'_'},
ranges: []rune{'a', 'z', '0', '9'},
ignoreCase: true,
inverted: false,
},
},
},
},
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},
},
&labeledExpr{
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pos: position{line: 222, col: 23, offset: 5360},
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label: "params",
expr: &ruleRefExpr{
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pos: position{line: 222, col: 30, offset: 5367},
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name: "ParamList",
},
},
},
},
},
leader: false,
leftRecursive: false,
},
},
}
func (c *current) onRoot11() (any, error) {
return ast.Ident{
Value: string(c.text),
Position: getPos(c),
}, nil
}
func (p *parser) callonRoot11() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onRoot11()
}
func (c *current) onRoot7(name any) (any, error) {
return ast.EndTag{
Name: name.(ast.Ident),
Position: getPos(c),
}, nil
}
func (p *parser) callonRoot7() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onRoot7(stack["name"])
}
func (c *current) onRoot16() (any, error) {
return ast.Text{Data: c.text, Position: getPos(c)}, nil
}
func (p *parser) callonRoot16() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onRoot16()
}
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func (c *current) onRoot1(items any) (any, error) {
itemSlice := toAnySlice(items)
out := make([]ast.Node, len(itemSlice))
for i, item := range itemSlice {
out[i] = item.(ast.Node)
}
return out, nil
}
func (p *parser) callonRoot1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onRoot1(stack["items"])
}
func (c *current) onTag5() (any, error) {
return ast.Ident{
Value: string(c.text),
Position: getPos(c),
}, nil
}
func (p *parser) callonTag5() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onTag5()
}
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func (c *current) onTag1(name, params, body any) (any, error) {
return ast.Tag{
Name: name.(ast.Ident),
Params: toNodeSlice(params),
HasBody: body != nil,
Position: getPos(c),
}, nil
}
func (p *parser) callonTag1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onTag1(stack["name"], stack["params"], stack["body"])
}
func (c *current) onExprTag1(ignoreErr, item any) (any, error) {
return ast.ExprTag{
Value: item.(ast.Node),
IgnoreError: ignoreErr != nil,
Position: getPos(c),
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}, nil
}
func (p *parser) callonExprTag1() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onExprTag1(stack["ignoreErr"], stack["item"])
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}
func (c *current) onTernaryExpr1(cond, vals any) (any, error) {
if vals == nil {
return cond, nil
} else {
s := toAnySlice(vals)
return ast.Ternary{
Condition: cond.(ast.Node),
IfTrue: s[3].(ast.Node),
Else: s[7].(ast.Node),
}, nil
}
}
func (p *parser) callonTernaryExpr1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onTernaryExpr1(stack["cond"], stack["vals"])
}
func (c *current) onLogicalExpr12() (any, error) {
return ast.Operator{
Value: string(c.text),
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Position: getPos(c),
}, nil
}
func (p *parser) callonLogicalExpr12() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onLogicalExpr12()
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}
func (c *current) onLogicalExpr1(first, rest any) (any, error) {
return toExpr(c, first, rest), nil
}
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func (p *parser) callonLogicalExpr1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onLogicalExpr1(stack["first"], stack["rest"])
}
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func (c *current) onComparisonExpr12() (any, error) {
return ast.Operator{
Value: string(c.text),
Position: getPos(c),
}, nil
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}
func (p *parser) callonComparisonExpr12() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onComparisonExpr12()
}
func (c *current) onComparisonExpr1(first, rest any) (any, error) {
return toExpr(c, first, rest), nil
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}
func (p *parser) callonComparisonExpr1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onComparisonExpr1(stack["first"], stack["rest"])
}
func (c *current) onArithmeticExpr12() (any, error) {
return ast.Operator{
Value: string(c.text),
Position: getPos(c),
}, nil
}
func (p *parser) callonArithmeticExpr12() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onArithmeticExpr12()
}
func (c *current) onArithmeticExpr1(first, rest any) (any, error) {
return toExpr(c, first, rest), nil
}
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func (p *parser) callonArithmeticExpr1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onArithmeticExpr1(stack["first"], stack["rest"])
}
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func (c *current) onParenExpr1(expr any) (any, error) {
return expr, nil
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}
func (p *parser) callonParenExpr1() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onParenExpr1(stack["expr"])
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}
func (c *current) onParamList1(params any) (any, error) {
paramSlice := toAnySlice(params)
if len(paramSlice) == 0 {
return []ast.Node{}, nil
}
out := []ast.Node{paramSlice[0].(ast.Node)}
restSlice := toAnySlice(paramSlice[1])
for _, value := range restSlice {
valueSlice := toAnySlice(value)
out = append(out, valueSlice[2].(ast.Node))
}
return out, nil
}
func (p *parser) callonParamList1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onParamList1(stack["params"])
}
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func (c *current) onValue8() (any, error) {
return ast.Nil{Position: getPos(c)}, nil
}
func (p *parser) callonValue8() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onValue8()
}
func (c *current) onValue13(value any) (any, error) {
s, err := strconv.Unquote(string(c.text))
return ast.String{
Value: s,
Position: getPos(c),
}, err
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}
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func (p *parser) callonValue13() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
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return p.cur.onValue13(stack["value"])
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}
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func (c *current) onValue20(value any) (any, error) {
s, err := strconv.Unquote(string(c.text))
return ast.String{
Value: s,
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Position: getPos(c),
}, err
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}
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func (p *parser) callonValue20() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
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return p.cur.onValue20(stack["value"])
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}
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func (c *current) onValue27(value any) (any, error) {
f, err := strconv.ParseFloat(string(c.text), 64)
return ast.Float{
Value: f,
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Position: getPos(c),
}, err
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}
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func (p *parser) callonValue27() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
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return p.cur.onValue27(stack["value"])
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}
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func (c *current) onValue38() (any, error) {
i, err := strconv.ParseInt(string(c.text), 0, 64)
return ast.Integer{
Value: i,
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Position: getPos(c),
}, err
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}
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func (p *parser) callonValue38() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
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return p.cur.onValue38()
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}
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func (c *current) onValue57() (any, error) {
b, err := strconv.ParseBool(string(c.text))
return ast.Bool{
Value: b,
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Position: getPos(c),
}, err
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}
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func (p *parser) callonValue57() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
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return p.cur.onValue57()
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}
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func (c *current) onValue63() (any, error) {
return ast.Ident{
Value: string(c.text),
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Position: getPos(c),
}, nil
}
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func (p *parser) callonValue63() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
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return p.cur.onValue63()
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}
func (c *current) onValue1(not, node any) (any, error) {
return ast.Value{
Node: node.(ast.Node),
Not: not != nil,
}, nil
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}
func (p *parser) callonValue1() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onValue1(stack["not"], stack["node"])
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}
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func (c *current) onMap1(fpair, pairs any) (any, error) {
out := ast.Map{
Map: map[ast.Node]ast.Node{},
Position: getPos(c),
}
fpairSlice := toAnySlice(fpair)
if fpairSlice == nil {
return out, nil
} else {
out.Map[fpairSlice[0].(ast.Node)] = fpairSlice[4].(ast.Node)
for _, pair := range toAnySlice(pairs) {
pairSlice := toAnySlice(pair)
out.Map[pairSlice[2].(ast.Node)] = pairSlice[6].(ast.Node)
}
}
return out, nil
}
func (p *parser) callonMap1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onMap1(stack["fpair"], stack["pairs"])
}
func (c *current) onArray1(fval, vals any) (any, error) {
out := ast.Array{Position: getPos(c)}
if fval == nil {
return out, nil
} else {
out.Array = append(out.Array, fval.(ast.Node))
for _, val := range toAnySlice(vals) {
valSlice := toAnySlice(val)
out.Array = append(out.Array, valSlice[2].(ast.Node))
}
}
return out, nil
}
func (p *parser) callonArray1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onArray1(stack["fval"], stack["vals"])
}
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func (c *current) onVariableOr4() (any, error) {
return ast.Ident{
Value: string(c.text),
Position: getPos(c),
}, nil
}
func (p *parser) callonVariableOr4() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onVariableOr4()
}
func (c *current) onVariableOr1(variable, or any) (any, error) {
return ast.VariableOr{
Variable: variable.(ast.Ident),
Or: or.(ast.Node),
}, nil
}
func (p *parser) callonVariableOr1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onVariableOr1(stack["variable"], stack["or"])
}
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func (c *current) onAssignment4() (any, error) {
return ast.Ident{
Value: string(c.text),
Position: getPos(c),
}, nil
}
func (p *parser) callonAssignment4() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onAssignment4()
}
func (c *current) onAssignment1(name, value any) (any, error) {
return ast.Assignment{
Name: name.(ast.Ident),
Value: value.(ast.Node),
Position: getPos(c),
}, nil
}
func (p *parser) callonAssignment1() (any, error) {
stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onAssignment1(stack["name"], stack["value"])
}
func (c *current) onMethodCall7() (any, error) {
return ast.Ident{
Value: string(c.text),
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Position: getPos(c),
}, nil
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}
func (p *parser) callonMethodCall7() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onMethodCall7()
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}
func (c *current) onMethodCall1(value, name, params any) (any, error) {
return ast.MethodCall{
Value: value.(ast.Node),
Name: name.(ast.Ident),
Params: toNodeSlice(params),
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Position: getPos(c),
}, nil
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}
func (p *parser) callonMethodCall1() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onMethodCall1(stack["value"], stack["name"], stack["params"])
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}
func (c *current) onIndex1(value, index any) (any, error) {
return ast.Index{
Value: value.(ast.Node),
Index: index.(ast.Node),
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Position: getPos(c),
}, nil
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}
func (p *parser) callonIndex1() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onIndex1(stack["value"], stack["index"])
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}
func (c *current) onFieldAccess7() (any, error) {
return ast.Ident{
Value: string(c.text),
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Position: getPos(c),
}, nil
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}
func (p *parser) callonFieldAccess7() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onFieldAccess7()
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}
func (c *current) onFieldAccess1(value, name any) (any, error) {
return ast.FieldAccess{
Value: value.(ast.Node),
Name: name.(ast.Ident),
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Position: getPos(c),
}, nil
}
func (p *parser) callonFieldAccess1() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onFieldAccess1(stack["value"], stack["name"])
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}
func (c *current) onFuncCall4() (any, error) {
return ast.Ident{
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Value: string(c.text),
Position: getPos(c),
}, nil
}
func (p *parser) callonFuncCall4() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onFuncCall4()
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}
func (c *current) onFuncCall1(name, params any) (any, error) {
return ast.FuncCall{
Name: name.(ast.Ident),
Params: toNodeSlice(params),
Position: getPos(c),
}, nil
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}
func (p *parser) callonFuncCall1() (any, error) {
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stack := p.vstack[len(p.vstack)-1]
_ = stack
return p.cur.onFuncCall1(stack["name"], stack["params"])
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}
var (
// errNoRule is returned when the grammar to parse has no rule.
errNoRule = errors.New("grammar has no rule")
// errInvalidEntrypoint is returned when the specified entrypoint rule
// does not exit.
errInvalidEntrypoint = errors.New("invalid entrypoint")
// errInvalidEncoding is returned when the source is not properly
// utf8-encoded.
errInvalidEncoding = errors.New("invalid encoding")
// errMaxExprCnt is used to signal that the maximum number of
// expressions have been parsed.
errMaxExprCnt = errors.New("max number of expresssions parsed")
)
// Option is a function that can set an option on the parser. It returns
// the previous setting as an Option.
type Option func(*parser) Option
// MaxExpressions creates an Option to stop parsing after the provided
// number of expressions have been parsed, if the value is 0 then the parser will
// parse for as many steps as needed (possibly an infinite number).
//
// The default for maxExprCnt is 0.
func MaxExpressions(maxExprCnt uint64) Option {
return func(p *parser) Option {
oldMaxExprCnt := p.maxExprCnt
p.maxExprCnt = maxExprCnt
return MaxExpressions(oldMaxExprCnt)
}
}
// Entrypoint creates an Option to set the rule name to use as entrypoint.
// The rule name must have been specified in the -alternate-entrypoints
// if generating the parser with the -optimize-grammar flag, otherwise
// it may have been optimized out. Passing an empty string sets the
// entrypoint to the first rule in the grammar.
//
// The default is to start parsing at the first rule in the grammar.
func Entrypoint(ruleName string) Option {
return func(p *parser) Option {
oldEntrypoint := p.entrypoint
p.entrypoint = ruleName
if ruleName == "" {
p.entrypoint = g.rules[0].name
}
return Entrypoint(oldEntrypoint)
}
}
// AllowInvalidUTF8 creates an Option to allow invalid UTF-8 bytes.
// Every invalid UTF-8 byte is treated as a utf8.RuneError (U+FFFD)
// by character class matchers and is matched by the any matcher.
// The returned matched value, c.text and c.offset are NOT affected.
//
// The default is false.
func AllowInvalidUTF8(b bool) Option {
return func(p *parser) Option {
old := p.allowInvalidUTF8
p.allowInvalidUTF8 = b
return AllowInvalidUTF8(old)
}
}
// Recover creates an Option to set the recover flag to b. When set to
// true, this causes the parser to recover from panics and convert it
// to an error. Setting it to false can be useful while debugging to
// access the full stack trace.
//
// The default is true.
func Recover(b bool) Option {
return func(p *parser) Option {
old := p.recover
p.recover = b
return Recover(old)
}
}
// GlobalStore creates an Option to set a key to a certain value in
// the globalStore.
func GlobalStore(key string, value any) Option {
return func(p *parser) Option {
old := p.cur.globalStore[key]
p.cur.globalStore[key] = value
return GlobalStore(key, old)
}
}
// ParseFile parses the file identified by filename.
func ParseFile(filename string, opts ...Option) (i any, err error) {
f, err := os.Open(filename)
if err != nil {
return nil, err
}
defer func() {
if closeErr := f.Close(); closeErr != nil {
err = closeErr
}
}()
return ParseReader(filename, f, opts...)
}
// ParseReader parses the data from r using filename as information in the
// error messages.
func ParseReader(filename string, r io.Reader, opts ...Option) (any, error) {
b, err := io.ReadAll(r)
if err != nil {
return nil, err
}
return Parse(filename, b, opts...)
}
// Parse parses the data from b using filename as information in the
// error messages.
func Parse(filename string, b []byte, opts ...Option) (any, error) {
return newParser(filename, b, opts...).parse(g)
}
// position records a position in the text.
type position struct {
line, col, offset int
}
func (p position) String() string {
return strconv.Itoa(p.line) + ":" + strconv.Itoa(p.col) + " [" + strconv.Itoa(p.offset) + "]"
}
// savepoint stores all state required to go back to this point in the
// parser.
type savepoint struct {
position
rn rune
w int
}
type current struct {
pos position // start position of the match
text []byte // raw text of the match
// globalStore is a general store for the user to store arbitrary key-value
// pairs that they need to manage and that they do not want tied to the
// backtracking of the parser. This is only modified by the user and never
// rolled back by the parser. It is always up to the user to keep this in a
// consistent state.
globalStore storeDict
}
type storeDict map[string]any
// the AST types...
type grammar struct {
pos position
rules []*rule
}
type rule struct {
pos position
name string
displayName string
expr any
leader bool
leftRecursive bool
}
type choiceExpr struct {
pos position
alternatives []any
}
type actionExpr struct {
pos position
expr any
run func(*parser) (any, error)
}
type recoveryExpr struct {
pos position
expr any
recoverExpr any
failureLabel []string
}
type seqExpr struct {
pos position
exprs []any
}
type throwExpr struct {
pos position
label string
}
type labeledExpr struct {
pos position
label string
expr any
}
type expr struct {
pos position
expr any
}
type (
andExpr expr
notExpr expr
zeroOrOneExpr expr
zeroOrMoreExpr expr
oneOrMoreExpr expr
)
type ruleRefExpr struct {
pos position
name string
}
type andCodeExpr struct {
pos position
run func(*parser) (bool, error)
}
type notCodeExpr struct {
pos position
run func(*parser) (bool, error)
}
type litMatcher struct {
pos position
val string
ignoreCase bool
want string
}
type charClassMatcher struct {
pos position
val string
basicLatinChars [128]bool
chars []rune
ranges []rune
classes []*unicode.RangeTable
ignoreCase bool
inverted bool
}
type anyMatcher position
// errList cumulates the errors found by the parser.
type errList []error
func (e *errList) add(err error) {
*e = append(*e, err)
}
func (e errList) err() error {
if len(e) == 0 {
return nil
}
e.dedupe()
return e
}
func (e *errList) dedupe() {
var cleaned []error
set := make(map[string]bool)
for _, err := range *e {
if msg := err.Error(); !set[msg] {
set[msg] = true
cleaned = append(cleaned, err)
}
}
*e = cleaned
}
func (e errList) Error() string {
switch len(e) {
case 0:
return ""
case 1:
return e[0].Error()
default:
var buf bytes.Buffer
for i, err := range e {
if i > 0 {
buf.WriteRune('\n')
}
buf.WriteString(err.Error())
}
return buf.String()
}
}
// parserError wraps an error with a prefix indicating the rule in which
// the error occurred. The original error is stored in the Inner field.
type parserError struct {
Inner error
pos position
prefix string
expected []string
}
// Error returns the error message.
func (p *parserError) Error() string {
return p.prefix + ": " + p.Inner.Error()
}
// newParser creates a parser with the specified input source and options.
func newParser(filename string, b []byte, opts ...Option) *parser {
stats := Stats{
ChoiceAltCnt: make(map[string]map[string]int),
}
p := &parser{
filename: filename,
errs: new(errList),
data: b,
pt: savepoint{position: position{line: 1}},
recover: true,
cur: current{
globalStore: make(storeDict),
},
maxFailPos: position{col: 1, line: 1},
maxFailExpected: make([]string, 0, 20),
Stats: &stats,
// start rule is rule [0] unless an alternate entrypoint is specified
entrypoint: g.rules[0].name,
}
p.setOptions(opts)
if p.maxExprCnt == 0 {
p.maxExprCnt = math.MaxUint64
}
return p
}
// setOptions applies the options to the parser.
func (p *parser) setOptions(opts []Option) {
for _, opt := range opts {
opt(p)
}
}
type resultTuple struct {
v any
b bool
end savepoint
}
const choiceNoMatch = -1
// Stats stores some statistics, gathered during parsing
type Stats struct {
// ExprCnt counts the number of expressions processed during parsing
// This value is compared to the maximum number of expressions allowed
// (set by the MaxExpressions option).
ExprCnt uint64
// ChoiceAltCnt is used to count for each ordered choice expression,
// which alternative is used how may times.
// These numbers allow to optimize the order of the ordered choice expression
// to increase the performance of the parser
//
// The outer key of ChoiceAltCnt is composed of the name of the rule as well
// as the line and the column of the ordered choice.
// The inner key of ChoiceAltCnt is the number (one-based) of the matching alternative.
// For each alternative the number of matches are counted. If an ordered choice does not
// match, a special counter is incremented. The name of this counter is set with
// the parser option Statistics.
// For an alternative to be included in ChoiceAltCnt, it has to match at least once.
ChoiceAltCnt map[string]map[string]int
}
type ruleWithExpsStack struct {
rule *rule
estack []any
}
type parser struct {
filename string
pt savepoint
cur current
data []byte
errs *errList
depth int
recover bool
// memoization table for the packrat algorithm:
// map[offset in source] map[expression or rule] {value, match}
memo map[int]map[any]resultTuple
// rules table, maps the rule identifier to the rule node
rules map[string]*rule
// variables stack, map of label to value
vstack []map[string]any
// rule stack, allows identification of the current rule in errors
rstack []*rule
// parse fail
maxFailPos position
maxFailExpected []string
maxFailInvertExpected bool
// max number of expressions to be parsed
maxExprCnt uint64
// entrypoint for the parser
entrypoint string
allowInvalidUTF8 bool
*Stats
choiceNoMatch string
// recovery expression stack, keeps track of the currently available recovery expression, these are traversed in reverse
recoveryStack []map[string]any
}
// push a variable set on the vstack.
func (p *parser) pushV() {
if cap(p.vstack) == len(p.vstack) {
// create new empty slot in the stack
p.vstack = append(p.vstack, nil)
} else {
// slice to 1 more
p.vstack = p.vstack[:len(p.vstack)+1]
}
// get the last args set
m := p.vstack[len(p.vstack)-1]
if m != nil && len(m) == 0 {
// empty map, all good
return
}
m = make(map[string]any)
p.vstack[len(p.vstack)-1] = m
}
// pop a variable set from the vstack.
func (p *parser) popV() {
// if the map is not empty, clear it
m := p.vstack[len(p.vstack)-1]
if len(m) > 0 {
// GC that map
p.vstack[len(p.vstack)-1] = nil
}
p.vstack = p.vstack[:len(p.vstack)-1]
}
// push a recovery expression with its labels to the recoveryStack
func (p *parser) pushRecovery(labels []string, expr any) {
if cap(p.recoveryStack) == len(p.recoveryStack) {
// create new empty slot in the stack
p.recoveryStack = append(p.recoveryStack, nil)
} else {
// slice to 1 more
p.recoveryStack = p.recoveryStack[:len(p.recoveryStack)+1]
}
m := make(map[string]any, len(labels))
for _, fl := range labels {
m[fl] = expr
}
p.recoveryStack[len(p.recoveryStack)-1] = m
}
// pop a recovery expression from the recoveryStack
func (p *parser) popRecovery() {
// GC that map
p.recoveryStack[len(p.recoveryStack)-1] = nil
p.recoveryStack = p.recoveryStack[:len(p.recoveryStack)-1]
}
func (p *parser) addErr(err error) {
p.addErrAt(err, p.pt.position, []string{})
}
func (p *parser) addErrAt(err error, pos position, expected []string) {
var buf bytes.Buffer
if p.filename != "" {
buf.WriteString(p.filename)
}
if buf.Len() > 0 {
buf.WriteString(":")
}
buf.WriteString(fmt.Sprintf("%d:%d (%d)", pos.line, pos.col, pos.offset))
if len(p.rstack) > 0 {
if buf.Len() > 0 {
buf.WriteString(": ")
}
rule := p.rstack[len(p.rstack)-1]
if rule.displayName != "" {
buf.WriteString("rule " + rule.displayName)
} else {
buf.WriteString("rule " + rule.name)
}
}
pe := &parserError{Inner: err, pos: pos, prefix: buf.String(), expected: expected}
p.errs.add(pe)
}
func (p *parser) failAt(fail bool, pos position, want string) {
// process fail if parsing fails and not inverted or parsing succeeds and invert is set
if fail == p.maxFailInvertExpected {
if pos.offset < p.maxFailPos.offset {
return
}
if pos.offset > p.maxFailPos.offset {
p.maxFailPos = pos
p.maxFailExpected = p.maxFailExpected[:0]
}
if p.maxFailInvertExpected {
want = "!" + want
}
p.maxFailExpected = append(p.maxFailExpected, want)
}
}
// read advances the parser to the next rune.
func (p *parser) read() {
p.pt.offset += p.pt.w
rn, n := utf8.DecodeRune(p.data[p.pt.offset:])
p.pt.rn = rn
p.pt.w = n
p.pt.col++
if rn == '\n' {
p.pt.line++
p.pt.col = 0
}
if rn == utf8.RuneError && n == 1 { // see utf8.DecodeRune
if !p.allowInvalidUTF8 {
p.addErr(errInvalidEncoding)
}
}
}
// restore parser position to the savepoint pt.
func (p *parser) restore(pt savepoint) {
if pt.offset == p.pt.offset {
return
}
p.pt = pt
}
// get the slice of bytes from the savepoint start to the current position.
func (p *parser) sliceFrom(start savepoint) []byte {
return p.data[start.position.offset:p.pt.position.offset]
}
func (p *parser) getMemoized(node any) (resultTuple, bool) {
if len(p.memo) == 0 {
return resultTuple{}, false
}
m := p.memo[p.pt.offset]
if len(m) == 0 {
return resultTuple{}, false
}
res, ok := m[node]
return res, ok
}
func (p *parser) setMemoized(pt savepoint, node any, tuple resultTuple) {
if p.memo == nil {
p.memo = make(map[int]map[any]resultTuple)
}
m := p.memo[pt.offset]
if m == nil {
m = make(map[any]resultTuple)
p.memo[pt.offset] = m
}
m[node] = tuple
}
func (p *parser) buildRulesTable(g *grammar) {
p.rules = make(map[string]*rule, len(g.rules))
for _, r := range g.rules {
p.rules[r.name] = r
}
}
func (p *parser) parse(g *grammar) (val any, err error) {
if len(g.rules) == 0 {
p.addErr(errNoRule)
return nil, p.errs.err()
}
// TODO : not super critical but this could be generated
p.buildRulesTable(g)
if p.recover {
// panic can be used in action code to stop parsing immediately
// and return the panic as an error.
defer func() {
if e := recover(); e != nil {
val = nil
switch e := e.(type) {
case error:
p.addErr(e)
default:
p.addErr(fmt.Errorf("%v", e))
}
err = p.errs.err()
}
}()
}
startRule, ok := p.rules[p.entrypoint]
if !ok {
p.addErr(errInvalidEntrypoint)
return nil, p.errs.err()
}
p.read() // advance to first rune
val, ok = p.parseRuleWrap(startRule)
if !ok {
if len(*p.errs) == 0 {
// If parsing fails, but no errors have been recorded, the expected values
// for the farthest parser position are returned as error.
maxFailExpectedMap := make(map[string]struct{}, len(p.maxFailExpected))
for _, v := range p.maxFailExpected {
maxFailExpectedMap[v] = struct{}{}
}
expected := make([]string, 0, len(maxFailExpectedMap))
eof := false
if _, ok := maxFailExpectedMap["!."]; ok {
delete(maxFailExpectedMap, "!.")
eof = true
}
for k := range maxFailExpectedMap {
expected = append(expected, k)
}
sort.Strings(expected)
if eof {
expected = append(expected, "EOF")
}
p.addErrAt(errors.New("no match found, expected: "+listJoin(expected, ", ", "or")), p.maxFailPos, expected)
}
return nil, p.errs.err()
}
return val, p.errs.err()
}
func listJoin(list []string, sep string, lastSep string) string {
switch len(list) {
case 0:
return ""
case 1:
return list[0]
default:
return strings.Join(list[:len(list)-1], sep) + " " + lastSep + " " + list[len(list)-1]
}
}
func (p *parser) parseRuleRecursiveLeader(rule *rule) (any, bool) {
result, ok := p.getMemoized(rule)
if ok {
p.restore(result.end)
return result.v, result.b
}
var (
depth = 0
startMark = p.pt
lastResult = resultTuple{nil, false, startMark}
lastErrors = *p.errs
)
for {
p.setMemoized(startMark, rule, lastResult)
val, ok := p.parseRule(rule)
endMark := p.pt
if (!ok) || (endMark.offset <= lastResult.end.offset && depth != 0) {
*p.errs = lastErrors
break
}
lastResult = resultTuple{val, ok, endMark}
lastErrors = *p.errs
p.restore(startMark)
depth++
}
p.restore(lastResult.end)
p.setMemoized(startMark, rule, lastResult)
return lastResult.v, lastResult.b
}
func (p *parser) parseRuleRecursiveNoLeader(rule *rule) (any, bool) {
return p.parseRule(rule)
}
func (p *parser) parseRuleWrap(rule *rule) (any, bool) {
var (
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val any
ok bool
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)
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if rule.leftRecursive {
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if rule.leader {
val, ok = p.parseRuleRecursiveLeader(rule)
} else {
val, ok = p.parseRuleRecursiveNoLeader(rule)
}
} else {
val, ok = p.parseRule(rule)
}
return val, ok
}
func (p *parser) parseRule(rule *rule) (any, bool) {
p.rstack = append(p.rstack, rule)
p.pushV()
val, ok := p.parseExprWrap(rule.expr)
p.popV()
p.rstack = p.rstack[:len(p.rstack)-1]
return val, ok
}
func (p *parser) parseExprWrap(expr any) (any, bool) {
val, ok := p.parseExpr(expr)
return val, ok
}
func (p *parser) parseExpr(expr any) (any, bool) {
p.ExprCnt++
if p.ExprCnt > p.maxExprCnt {
panic(errMaxExprCnt)
}
var val any
var ok bool
switch expr := expr.(type) {
case *actionExpr:
val, ok = p.parseActionExpr(expr)
case *andCodeExpr:
val, ok = p.parseAndCodeExpr(expr)
case *andExpr:
val, ok = p.parseAndExpr(expr)
case *anyMatcher:
val, ok = p.parseAnyMatcher(expr)
case *charClassMatcher:
val, ok = p.parseCharClassMatcher(expr)
case *choiceExpr:
val, ok = p.parseChoiceExpr(expr)
case *labeledExpr:
val, ok = p.parseLabeledExpr(expr)
case *litMatcher:
val, ok = p.parseLitMatcher(expr)
case *notCodeExpr:
val, ok = p.parseNotCodeExpr(expr)
case *notExpr:
val, ok = p.parseNotExpr(expr)
case *oneOrMoreExpr:
val, ok = p.parseOneOrMoreExpr(expr)
case *recoveryExpr:
val, ok = p.parseRecoveryExpr(expr)
case *ruleRefExpr:
val, ok = p.parseRuleRefExpr(expr)
case *seqExpr:
val, ok = p.parseSeqExpr(expr)
case *throwExpr:
val, ok = p.parseThrowExpr(expr)
case *zeroOrMoreExpr:
val, ok = p.parseZeroOrMoreExpr(expr)
case *zeroOrOneExpr:
val, ok = p.parseZeroOrOneExpr(expr)
default:
panic(fmt.Sprintf("unknown expression type %T", expr))
}
return val, ok
}
func (p *parser) parseActionExpr(act *actionExpr) (any, bool) {
start := p.pt
val, ok := p.parseExprWrap(act.expr)
if ok {
p.cur.pos = start.position
p.cur.text = p.sliceFrom(start)
actVal, err := act.run(p)
if err != nil {
p.addErrAt(err, start.position, []string{})
}
val = actVal
}
return val, ok
}
func (p *parser) parseAndCodeExpr(and *andCodeExpr) (any, bool) {
ok, err := and.run(p)
if err != nil {
p.addErr(err)
}
return nil, ok
}
func (p *parser) parseAndExpr(and *andExpr) (any, bool) {
pt := p.pt
p.pushV()
_, ok := p.parseExprWrap(and.expr)
p.popV()
p.restore(pt)
return nil, ok
}
func (p *parser) parseAnyMatcher(any *anyMatcher) (any, bool) {
if p.pt.rn == utf8.RuneError && p.pt.w == 0 {
// EOF - see utf8.DecodeRune
p.failAt(false, p.pt.position, ".")
return nil, false
}
start := p.pt
p.read()
p.failAt(true, start.position, ".")
return p.sliceFrom(start), true
}
func (p *parser) parseCharClassMatcher(chr *charClassMatcher) (any, bool) {
cur := p.pt.rn
start := p.pt
// can't match EOF
if cur == utf8.RuneError && p.pt.w == 0 { // see utf8.DecodeRune
p.failAt(false, start.position, chr.val)
return nil, false
}
if chr.ignoreCase {
cur = unicode.ToLower(cur)
}
// try to match in the list of available chars
for _, rn := range chr.chars {
if rn == cur {
if chr.inverted {
p.failAt(false, start.position, chr.val)
return nil, false
}
p.read()
p.failAt(true, start.position, chr.val)
return p.sliceFrom(start), true
}
}
// try to match in the list of ranges
for i := 0; i < len(chr.ranges); i += 2 {
if cur >= chr.ranges[i] && cur <= chr.ranges[i+1] {
if chr.inverted {
p.failAt(false, start.position, chr.val)
return nil, false
}
p.read()
p.failAt(true, start.position, chr.val)
return p.sliceFrom(start), true
}
}
// try to match in the list of Unicode classes
for _, cl := range chr.classes {
if unicode.Is(cl, cur) {
if chr.inverted {
p.failAt(false, start.position, chr.val)
return nil, false
}
p.read()
p.failAt(true, start.position, chr.val)
return p.sliceFrom(start), true
}
}
if chr.inverted {
p.read()
p.failAt(true, start.position, chr.val)
return p.sliceFrom(start), true
}
p.failAt(false, start.position, chr.val)
return nil, false
}
func (p *parser) parseChoiceExpr(ch *choiceExpr) (any, bool) {
for altI, alt := range ch.alternatives {
// dummy assignment to prevent compile error if optimized
_ = altI
p.pushV()
val, ok := p.parseExprWrap(alt)
p.popV()
if ok {
return val, ok
}
}
return nil, false
}
func (p *parser) parseLabeledExpr(lab *labeledExpr) (any, bool) {
p.pushV()
val, ok := p.parseExprWrap(lab.expr)
p.popV()
if ok && lab.label != "" {
m := p.vstack[len(p.vstack)-1]
m[lab.label] = val
}
return val, ok
}
func (p *parser) parseLitMatcher(lit *litMatcher) (any, bool) {
start := p.pt
for _, want := range lit.val {
cur := p.pt.rn
if lit.ignoreCase {
cur = unicode.ToLower(cur)
}
if cur != want {
p.failAt(false, start.position, lit.want)
p.restore(start)
return nil, false
}
p.read()
}
p.failAt(true, start.position, lit.want)
return p.sliceFrom(start), true
}
func (p *parser) parseNotCodeExpr(not *notCodeExpr) (any, bool) {
ok, err := not.run(p)
if err != nil {
p.addErr(err)
}
return nil, !ok
}
func (p *parser) parseNotExpr(not *notExpr) (any, bool) {
pt := p.pt
p.pushV()
p.maxFailInvertExpected = !p.maxFailInvertExpected
_, ok := p.parseExprWrap(not.expr)
p.maxFailInvertExpected = !p.maxFailInvertExpected
p.popV()
p.restore(pt)
return nil, !ok
}
func (p *parser) parseOneOrMoreExpr(expr *oneOrMoreExpr) (any, bool) {
var vals []any
for {
p.pushV()
val, ok := p.parseExprWrap(expr.expr)
p.popV()
if !ok {
if len(vals) == 0 {
// did not match once, no match
return nil, false
}
return vals, true
}
vals = append(vals, val)
}
}
func (p *parser) parseRecoveryExpr(recover *recoveryExpr) (any, bool) {
p.pushRecovery(recover.failureLabel, recover.recoverExpr)
val, ok := p.parseExprWrap(recover.expr)
p.popRecovery()
return val, ok
}
func (p *parser) parseRuleRefExpr(ref *ruleRefExpr) (any, bool) {
if ref.name == "" {
panic(fmt.Sprintf("%s: invalid rule: missing name", ref.pos))
}
rule := p.rules[ref.name]
if rule == nil {
p.addErr(fmt.Errorf("undefined rule: %s", ref.name))
return nil, false
}
return p.parseRuleWrap(rule)
}
func (p *parser) parseSeqExpr(seq *seqExpr) (any, bool) {
vals := make([]any, 0, len(seq.exprs))
pt := p.pt
for _, expr := range seq.exprs {
val, ok := p.parseExprWrap(expr)
if !ok {
p.restore(pt)
return nil, false
}
vals = append(vals, val)
}
return vals, true
}
func (p *parser) parseThrowExpr(expr *throwExpr) (any, bool) {
for i := len(p.recoveryStack) - 1; i >= 0; i-- {
if recoverExpr, ok := p.recoveryStack[i][expr.label]; ok {
if val, ok := p.parseExprWrap(recoverExpr); ok {
return val, ok
}
}
}
return nil, false
}
func (p *parser) parseZeroOrMoreExpr(expr *zeroOrMoreExpr) (any, bool) {
var vals []any
for {
p.pushV()
val, ok := p.parseExprWrap(expr.expr)
p.popV()
if !ok {
return vals, true
}
vals = append(vals, val)
}
}
func (p *parser) parseZeroOrOneExpr(expr *zeroOrOneExpr) (any, bool) {
p.pushV()
val, _ := p.parseExprWrap(expr.expr)
p.popV()
// whether it matched or not, consider it a match
return val, true
}