// Code generated by pigeon; DO NOT EDIT. package nosql import ( "bytes" "errors" "fmt" "io" "math" "os" "sort" "strconv" "strings" "sync" "unicode" "unicode/utf8" "github.com/pikami/cosmium/parsers" ) func makeSelectStmt(columns, table, whereClause interface{}, count interface{}, orderList interface{}) (parsers.SelectStmt, error) { selectStmt := parsers.SelectStmt{ SelectItems: columns.([]parsers.SelectItem), Table: table.(parsers.Table), } switch v := whereClause.(type) { case parsers.ComparisonExpression, parsers.LogicalExpression, parsers.Constant, parsers.SelectItem: selectStmt.Filters = v } if n, ok := count.(int); ok { selectStmt.Count = n } if orderExpressions, ok := orderList.([]parsers.OrderExpression); ok { selectStmt.OrderExpressions = orderExpressions } return selectStmt, nil } func makeSelectItem(name interface{}, path interface{}, selectItemType parsers.SelectItemType) (parsers.SelectItem, error) { ps := path.([]interface{}) paths := make([]string, 1) paths[0] = name.(string) for _, p := range ps { paths = append(paths, p.(string)) } return parsers.SelectItem{Path: paths, Type: selectItemType}, nil } func makeColumnList(column interface{}, other_columns interface{}) ([]parsers.SelectItem, error) { collsAsArray := other_columns.([]interface{}) columnList := make([]parsers.SelectItem, len(collsAsArray)+1) columnList[0] = column.(parsers.SelectItem) for i, v := range collsAsArray { if col, ok := v.(parsers.SelectItem); ok { columnList[i+1] = col } } return columnList, nil } func makeSelectArray(columns interface{}) (parsers.SelectItem, error) { return parsers.SelectItem{ SelectItems: columns.([]parsers.SelectItem), Type: parsers.SelectItemTypeArray, }, nil } func makeSelectObject(field interface{}, other_fields interface{}) (parsers.SelectItem, error) { fieldsAsArray := other_fields.([]interface{}) fieldsList := make([]parsers.SelectItem, len(fieldsAsArray)+1) fieldsList[0] = field.(parsers.SelectItem) for i, v := range fieldsAsArray { if col, ok := v.(parsers.SelectItem); ok { fieldsList[i+1] = col } } return parsers.SelectItem{ SelectItems: fieldsList, Type: parsers.SelectItemTypeObject, }, nil } func makeOrderByClause(ex1 interface{}, others interface{}) ([]parsers.OrderExpression, error) { othersArray := others.([]interface{}) orderList := make([]parsers.OrderExpression, len(othersArray)+1) orderList[0] = ex1.(parsers.OrderExpression) for i, v := range othersArray { if col, ok := v.(parsers.OrderExpression); ok { orderList[i+1] = col } } return orderList, nil } func makeOrderExpression(field interface{}, order interface{}) (parsers.OrderExpression, error) { value := parsers.OrderExpression{ SelectItem: field.(parsers.SelectItem), Direction: parsers.OrderDirectionAsc, } if orderValue, ok := order.(parsers.OrderDirection); ok { value.Direction = orderValue } return value, nil } func createFunctionCall(functionType parsers.FunctionCallType, arguments []interface{}) (parsers.FunctionCall, error) { return parsers.FunctionCall{Type: functionType, Arguments: arguments}, nil } func joinStrings(array []interface{}) string { var stringsArray []string for _, elem := range array { str, ok := elem.(string) if !ok { continue } stringsArray = append(stringsArray, str) } return strings.Join(stringsArray, "") } func combineExpressions(ex1 interface{}, exs interface{}, operation parsers.LogicalExpressionType) (interface{}, error) { if exs == nil || len(exs.([]interface{})) < 1 { return ex1, nil } return parsers.LogicalExpression{ Expressions: append([]interface{}{ex1}, exs.([]interface{})...), Operation: operation, }, nil } var g = &grammar{ rules: []*rule{ { name: "Input", pos: position{line: 135, col: 1, offset: 3762}, expr: &actionExpr{ pos: position{line: 135, col: 10, offset: 3771}, run: (*parser).callonInput1, expr: &labeledExpr{ pos: position{line: 135, col: 10, offset: 3771}, label: "selectStmt", expr: &ruleRefExpr{ pos: position{line: 135, col: 21, offset: 3782}, name: "SelectStmt", }, }, }, }, { name: "SelectStmt", pos: position{line: 139, col: 1, offset: 3825}, expr: &actionExpr{ pos: position{line: 139, col: 15, offset: 3839}, run: (*parser).callonSelectStmt1, expr: &seqExpr{ pos: position{line: 139, col: 15, offset: 3839}, exprs: []any{ &ruleRefExpr{ pos: position{line: 139, col: 15, offset: 3839}, name: "Select", }, &ruleRefExpr{ pos: position{line: 139, col: 22, offset: 3846}, name: "ws", }, &labeledExpr{ pos: position{line: 139, col: 25, offset: 3849}, label: "topClause", expr: &zeroOrOneExpr{ pos: position{line: 139, col: 35, offset: 3859}, expr: &ruleRefExpr{ pos: position{line: 139, col: 35, offset: 3859}, name: "TopClause", }, }, }, &ruleRefExpr{ pos: position{line: 139, col: 46, offset: 3870}, name: "ws", }, &labeledExpr{ pos: position{line: 139, col: 49, offset: 3873}, label: "columns", expr: &ruleRefExpr{ pos: position{line: 139, col: 57, offset: 3881}, name: "Selection", }, }, &ruleRefExpr{ pos: position{line: 139, col: 67, offset: 3891}, name: "ws", }, &ruleRefExpr{ pos: position{line: 140, col: 5, offset: 3898}, name: "From", }, &ruleRefExpr{ pos: position{line: 140, col: 10, offset: 3903}, name: "ws", }, &labeledExpr{ pos: position{line: 140, col: 13, offset: 3906}, label: "table", expr: &ruleRefExpr{ pos: position{line: 140, col: 19, offset: 3912}, name: "TableName", }, }, &ruleRefExpr{ pos: position{line: 140, col: 29, offset: 3922}, name: "ws", }, &labeledExpr{ pos: position{line: 141, col: 5, offset: 3929}, label: "whereClause", expr: &zeroOrOneExpr{ pos: position{line: 141, col: 17, offset: 3941}, expr: &actionExpr{ pos: position{line: 141, col: 18, offset: 3942}, run: (*parser).callonSelectStmt19, expr: &seqExpr{ pos: position{line: 141, col: 18, offset: 3942}, exprs: []any{ &ruleRefExpr{ pos: position{line: 141, col: 18, offset: 3942}, name: "ws", }, &ruleRefExpr{ pos: position{line: 141, col: 21, offset: 3945}, name: "Where", }, &ruleRefExpr{ pos: position{line: 141, col: 27, offset: 3951}, name: "ws", }, &labeledExpr{ pos: position{line: 141, col: 30, offset: 3954}, label: "condition", expr: &ruleRefExpr{ pos: position{line: 141, col: 40, offset: 3964}, name: "Condition", }, }, }, }, }, }, }, &labeledExpr{ pos: position{line: 142, col: 5, offset: 4006}, label: "orderByClause", expr: &zeroOrOneExpr{ pos: position{line: 142, col: 19, offset: 4020}, expr: &ruleRefExpr{ pos: position{line: 142, col: 19, offset: 4020}, name: "OrderByClause", }, }, }, }, }, }, }, { name: "TopClause", pos: position{line: 146, col: 1, offset: 4121}, expr: &actionExpr{ pos: position{line: 146, col: 14, offset: 4134}, run: (*parser).callonTopClause1, expr: &seqExpr{ pos: position{line: 146, col: 14, offset: 4134}, exprs: []any{ &ruleRefExpr{ pos: position{line: 146, col: 14, offset: 4134}, name: "Top", }, &ruleRefExpr{ pos: position{line: 146, col: 18, offset: 4138}, name: "ws", }, &labeledExpr{ pos: position{line: 146, col: 21, offset: 4141}, label: "count", expr: &ruleRefExpr{ pos: position{line: 146, col: 27, offset: 4147}, name: "Integer", }, }, }, }, }, }, { name: "Selection", pos: position{line: 150, col: 1, offset: 4182}, expr: &choiceExpr{ pos: position{line: 150, col: 14, offset: 4195}, alternatives: []any{ &ruleRefExpr{ pos: position{line: 150, col: 14, offset: 4195}, name: "SelectValueSpec", }, &ruleRefExpr{ pos: position{line: 150, col: 32, offset: 4213}, name: "ColumnList", }, &ruleRefExpr{ pos: position{line: 150, col: 45, offset: 4226}, name: "SelectAsterisk", }, }, }, }, { name: "SelectAsterisk", pos: position{line: 152, col: 1, offset: 4242}, expr: &actionExpr{ pos: position{line: 152, col: 19, offset: 4260}, run: (*parser).callonSelectAsterisk1, expr: &litMatcher{ pos: position{line: 152, col: 19, offset: 4260}, val: "*", ignoreCase: false, want: "\"*\"", }, }, }, { name: "ColumnList", pos: position{line: 158, col: 1, offset: 4455}, expr: &actionExpr{ pos: position{line: 158, col: 15, offset: 4469}, run: (*parser).callonColumnList1, expr: &seqExpr{ pos: position{line: 158, col: 15, offset: 4469}, exprs: []any{ &labeledExpr{ pos: position{line: 158, col: 15, offset: 4469}, label: "column", expr: &ruleRefExpr{ pos: position{line: 158, col: 22, offset: 4476}, name: "SelectItem", }, }, &labeledExpr{ pos: position{line: 158, col: 33, offset: 4487}, label: "other_columns", expr: &zeroOrMoreExpr{ pos: position{line: 158, col: 47, offset: 4501}, expr: &actionExpr{ pos: position{line: 158, col: 48, offset: 4502}, run: (*parser).callonColumnList7, expr: &seqExpr{ pos: position{line: 158, col: 48, offset: 4502}, exprs: []any{ &ruleRefExpr{ pos: position{line: 158, col: 48, offset: 4502}, name: "ws", }, &litMatcher{ pos: position{line: 158, col: 51, offset: 4505}, val: ",", ignoreCase: false, want: "\",\"", }, &ruleRefExpr{ pos: position{line: 158, col: 55, offset: 4509}, name: "ws", }, &labeledExpr{ pos: position{line: 158, col: 58, offset: 4512}, label: "coll", expr: &ruleRefExpr{ pos: position{line: 158, col: 63, offset: 4517}, name: "SelectItem", }, }, }, }, }, }, }, }, }, }, }, { name: "SelectValueSpec", pos: position{line: 162, col: 1, offset: 4604}, expr: &actionExpr{ pos: position{line: 162, col: 20, offset: 4623}, run: (*parser).callonSelectValueSpec1, expr: &seqExpr{ pos: position{line: 162, col: 20, offset: 4623}, exprs: []any{ &litMatcher{ pos: position{line: 162, col: 20, offset: 4623}, val: "value", ignoreCase: true, want: "\"VALUE\"i", }, &ruleRefExpr{ pos: position{line: 162, col: 29, offset: 4632}, name: "ws", }, &labeledExpr{ pos: position{line: 162, col: 32, offset: 4635}, label: "column", expr: &ruleRefExpr{ pos: position{line: 162, col: 39, offset: 4642}, name: "SelectItem", }, }, }, }, }, }, { name: "TableName", pos: position{line: 168, col: 1, offset: 4796}, expr: &actionExpr{ pos: position{line: 168, col: 14, offset: 4809}, run: (*parser).callonTableName1, expr: &labeledExpr{ pos: position{line: 168, col: 14, offset: 4809}, label: "key", expr: &ruleRefExpr{ pos: position{line: 168, col: 18, offset: 4813}, name: "Identifier", }, }, }, }, { name: "SelectArray", pos: position{line: 172, col: 1, offset: 4880}, expr: &actionExpr{ pos: position{line: 172, col: 16, offset: 4895}, run: (*parser).callonSelectArray1, expr: &seqExpr{ pos: position{line: 172, col: 16, offset: 4895}, exprs: []any{ &litMatcher{ pos: position{line: 172, col: 16, offset: 4895}, val: "[", ignoreCase: false, want: "\"[\"", }, &ruleRefExpr{ pos: position{line: 172, col: 20, offset: 4899}, name: "ws", }, &labeledExpr{ pos: position{line: 172, col: 23, offset: 4902}, label: "columns", expr: &ruleRefExpr{ pos: position{line: 172, col: 31, offset: 4910}, name: "ColumnList", }, }, &ruleRefExpr{ pos: position{line: 172, col: 42, offset: 4921}, name: "ws", }, &litMatcher{ pos: position{line: 172, col: 45, offset: 4924}, val: "]", ignoreCase: false, want: "\"]\"", }, }, }, }, }, { name: "SelectObject", pos: position{line: 176, col: 1, offset: 4969}, expr: &actionExpr{ pos: position{line: 176, col: 17, offset: 4985}, run: (*parser).callonSelectObject1, expr: &seqExpr{ pos: position{line: 176, col: 17, offset: 4985}, exprs: []any{ &litMatcher{ pos: position{line: 176, col: 17, offset: 4985}, val: "{", ignoreCase: false, want: "\"{\"", }, &ruleRefExpr{ pos: position{line: 176, col: 21, offset: 4989}, name: "ws", }, &labeledExpr{ pos: position{line: 176, col: 24, offset: 4992}, label: "field", expr: &ruleRefExpr{ pos: position{line: 176, col: 30, offset: 4998}, name: "SelectObjectField", }, }, &ruleRefExpr{ pos: position{line: 176, col: 48, offset: 5016}, name: "ws", }, &labeledExpr{ pos: position{line: 176, col: 51, offset: 5019}, label: "other_fields", expr: &zeroOrMoreExpr{ pos: position{line: 176, col: 64, offset: 5032}, expr: &actionExpr{ pos: position{line: 176, col: 65, offset: 5033}, run: (*parser).callonSelectObject10, expr: &seqExpr{ pos: position{line: 176, col: 65, offset: 5033}, exprs: []any{ &ruleRefExpr{ pos: position{line: 176, col: 65, offset: 5033}, name: "ws", }, &litMatcher{ pos: position{line: 176, col: 68, offset: 5036}, val: ",", ignoreCase: false, want: "\",\"", }, &ruleRefExpr{ pos: position{line: 176, col: 72, offset: 5040}, name: "ws", }, &labeledExpr{ pos: position{line: 176, col: 75, offset: 5043}, label: "coll", expr: &ruleRefExpr{ pos: position{line: 176, col: 80, offset: 5048}, name: "SelectObjectField", }, }, }, }, }, }, }, &ruleRefExpr{ pos: position{line: 176, col: 120, offset: 5088}, name: "ws", }, &litMatcher{ pos: position{line: 176, col: 123, offset: 5091}, val: "}", ignoreCase: false, want: "\"}\"", }, }, }, }, }, { name: "SelectObjectField", pos: position{line: 180, col: 1, offset: 5149}, expr: &actionExpr{ pos: position{line: 180, col: 22, offset: 5170}, run: (*parser).callonSelectObjectField1, expr: &seqExpr{ pos: position{line: 180, col: 22, offset: 5170}, exprs: []any{ &labeledExpr{ pos: position{line: 180, col: 22, offset: 5170}, label: "name", expr: &choiceExpr{ pos: position{line: 180, col: 28, offset: 5176}, alternatives: []any{ &ruleRefExpr{ pos: position{line: 180, col: 28, offset: 5176}, name: "Identifier", }, &actionExpr{ pos: position{line: 180, col: 41, offset: 5189}, run: (*parser).callonSelectObjectField6, expr: &seqExpr{ pos: position{line: 180, col: 41, offset: 5189}, exprs: []any{ &litMatcher{ pos: position{line: 180, col: 41, offset: 5189}, val: "\"", ignoreCase: false, want: "\"\\\"\"", }, &labeledExpr{ pos: position{line: 180, col: 46, offset: 5194}, label: "key", expr: &ruleRefExpr{ pos: position{line: 180, col: 50, offset: 5198}, name: "Identifier", }, }, &litMatcher{ pos: position{line: 180, col: 61, offset: 5209}, val: "\"", ignoreCase: false, want: "\"\\\"\"", }, }, }, }, }, }, }, &ruleRefExpr{ pos: position{line: 180, col: 87, offset: 5235}, name: "ws", }, &litMatcher{ pos: position{line: 180, col: 90, offset: 5238}, val: ":", ignoreCase: false, want: "\":\"", }, &ruleRefExpr{ pos: position{line: 180, col: 94, offset: 5242}, name: "ws", }, &labeledExpr{ pos: position{line: 180, col: 97, offset: 5245}, label: "selectItem", expr: &ruleRefExpr{ pos: position{line: 180, col: 108, offset: 5256}, name: "SelectItem", }, }, }, }, }, }, { name: "SelectProperty", pos: position{line: 186, col: 1, offset: 5362}, expr: &actionExpr{ pos: position{line: 186, col: 19, offset: 5380}, run: (*parser).callonSelectProperty1, expr: &seqExpr{ pos: position{line: 186, col: 19, offset: 5380}, exprs: []any{ &labeledExpr{ pos: position{line: 186, col: 19, offset: 5380}, label: "name", expr: &ruleRefExpr{ pos: position{line: 186, col: 24, offset: 5385}, name: "Identifier", }, }, &labeledExpr{ pos: position{line: 186, col: 35, offset: 5396}, label: "path", expr: &zeroOrMoreExpr{ pos: position{line: 186, col: 40, offset: 5401}, expr: &choiceExpr{ pos: position{line: 186, col: 41, offset: 5402}, alternatives: []any{ &ruleRefExpr{ pos: position{line: 186, col: 41, offset: 5402}, name: "DotFieldAccess", }, &ruleRefExpr{ pos: position{line: 186, col: 58, offset: 5419}, name: "ArrayFieldAccess", }, }, }, }, }, }, }, }, }, { name: "SelectItem", pos: position{line: 190, col: 1, offset: 5510}, expr: &actionExpr{ pos: position{line: 190, col: 15, offset: 5524}, run: (*parser).callonSelectItem1, expr: &seqExpr{ pos: position{line: 190, col: 15, offset: 5524}, exprs: []any{ &labeledExpr{ pos: position{line: 190, col: 15, offset: 5524}, label: "selectItem", expr: &choiceExpr{ pos: position{line: 190, col: 27, offset: 5536}, alternatives: []any{ &ruleRefExpr{ pos: position{line: 190, col: 27, offset: 5536}, name: "Literal", }, &ruleRefExpr{ pos: position{line: 190, col: 37, offset: 5546}, name: "FunctionCall", }, &ruleRefExpr{ pos: position{line: 190, col: 52, offset: 5561}, name: "SelectArray", }, &ruleRefExpr{ pos: position{line: 190, col: 66, offset: 5575}, name: "SelectObject", }, &ruleRefExpr{ pos: position{line: 190, col: 81, offset: 5590}, name: "SelectProperty", }, }, }, }, &labeledExpr{ pos: position{line: 190, col: 97, offset: 5606}, label: "asClause", expr: &zeroOrOneExpr{ pos: position{line: 190, col: 106, offset: 5615}, expr: &ruleRefExpr{ pos: position{line: 190, col: 106, offset: 5615}, name: "AsClause", }, }, }, }, }, }, }, { name: "AsClause", pos: position{line: 214, col: 1, offset: 6213}, expr: &actionExpr{ pos: position{line: 214, col: 13, offset: 6225}, run: (*parser).callonAsClause1, expr: &seqExpr{ pos: position{line: 214, col: 13, offset: 6225}, exprs: []any{ &ruleRefExpr{ pos: position{line: 214, col: 13, offset: 6225}, name: "ws", }, &ruleRefExpr{ pos: position{line: 214, col: 16, offset: 6228}, name: "As", }, &ruleRefExpr{ pos: position{line: 214, col: 19, offset: 6231}, name: "ws", }, &labeledExpr{ pos: position{line: 214, col: 22, offset: 6234}, label: "alias", expr: &ruleRefExpr{ pos: position{line: 214, col: 28, offset: 6240}, name: "Identifier", }, }, }, }, }, }, { name: "DotFieldAccess", pos: position{line: 216, col: 1, offset: 6274}, expr: &actionExpr{ pos: position{line: 216, col: 19, offset: 6292}, run: (*parser).callonDotFieldAccess1, expr: &seqExpr{ pos: position{line: 216, 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pos: position{line: 228, col: 25, offset: 6501}, name: "OrExpression", }, }, }, }, { name: "OrExpression", pos: position{line: 232, col: 1, offset: 6546}, expr: &actionExpr{ pos: position{line: 232, col: 17, offset: 6562}, run: (*parser).callonOrExpression1, expr: &seqExpr{ pos: position{line: 232, col: 17, offset: 6562}, exprs: []any{ &labeledExpr{ pos: position{line: 232, col: 17, offset: 6562}, label: "ex1", expr: &ruleRefExpr{ pos: position{line: 232, col: 21, offset: 6566}, name: "AndExpression", }, }, &labeledExpr{ pos: position{line: 232, col: 35, offset: 6580}, label: "ex2", expr: &zeroOrMoreExpr{ pos: position{line: 232, col: 39, offset: 6584}, expr: &actionExpr{ pos: position{line: 232, col: 40, offset: 6585}, run: (*parser).callonOrExpression7, expr: &seqExpr{ pos: position{line: 232, col: 40, offset: 6585}, exprs: []any{ &ruleRefExpr{ pos: position{line: 232, col: 40, offset: 6585}, name: "ws", }, &ruleRefExpr{ pos: position{line: 232, col: 43, offset: 6588}, name: "Or", }, 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position{line: 452, col: 13, offset: 14029}, val: "is_number", ignoreCase: true, want: "\"IS_NUMBER\"i", }, &ruleRefExpr{ pos: position{line: 452, col: 26, offset: 14042}, name: "ws", }, &litMatcher{ pos: position{line: 452, col: 29, offset: 14045}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 452, col: 33, offset: 14049}, name: "ws", }, &labeledExpr{ pos: position{line: 452, col: 36, offset: 14052}, label: "ex", expr: &ruleRefExpr{ pos: position{line: 452, col: 39, offset: 14055}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 452, col: 50, offset: 14066}, name: "ws", }, &litMatcher{ pos: position{line: 452, col: 53, offset: 14069}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "IsObject", pos: position{line: 456, col: 1, offset: 14157}, expr: &actionExpr{ pos: position{line: 456, col: 13, offset: 14169}, run: (*parser).callonIsObject1, expr: &seqExpr{ pos: position{line: 456, col: 13, offset: 14169}, exprs: []any{ &litMatcher{ pos: position{line: 456, col: 13, offset: 14169}, val: "is_object", ignoreCase: true, want: "\"IS_OBJECT\"i", }, &ruleRefExpr{ pos: position{line: 456, col: 26, offset: 14182}, name: "ws", }, &litMatcher{ pos: position{line: 456, col: 29, offset: 14185}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 456, col: 33, offset: 14189}, name: "ws", }, &labeledExpr{ pos: position{line: 456, col: 36, offset: 14192}, label: "ex", expr: &ruleRefExpr{ pos: position{line: 456, col: 39, offset: 14195}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 456, col: 50, offset: 14206}, name: "ws", }, &litMatcher{ pos: position{line: 456, col: 53, offset: 14209}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "IsPrimitive", pos: position{line: 460, col: 1, offset: 14297}, expr: &actionExpr{ pos: position{line: 460, col: 16, offset: 14312}, run: (*parser).callonIsPrimitive1, expr: &seqExpr{ pos: position{line: 460, col: 16, offset: 14312}, exprs: []any{ &litMatcher{ pos: position{line: 460, col: 16, offset: 14312}, val: "is_primitive", ignoreCase: true, want: "\"IS_PRIMITIVE\"i", }, &ruleRefExpr{ pos: position{line: 460, col: 32, offset: 14328}, name: "ws", }, &litMatcher{ pos: position{line: 460, col: 35, offset: 14331}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 460, col: 39, offset: 14335}, name: "ws", }, &labeledExpr{ pos: position{line: 460, col: 42, offset: 14338}, label: "ex", expr: &ruleRefExpr{ pos: position{line: 460, col: 45, offset: 14341}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 460, col: 56, offset: 14352}, name: "ws", }, &litMatcher{ pos: position{line: 460, col: 59, offset: 14355}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "IsString", pos: position{line: 464, col: 1, offset: 14446}, expr: &actionExpr{ pos: position{line: 464, col: 13, offset: 14458}, run: (*parser).callonIsString1, expr: &seqExpr{ pos: position{line: 464, col: 13, offset: 14458}, exprs: []any{ &litMatcher{ pos: position{line: 464, col: 13, offset: 14458}, val: "is_string", ignoreCase: true, want: "\"IS_STRING\"i", }, &ruleRefExpr{ pos: position{line: 464, col: 26, offset: 14471}, name: "ws", }, &litMatcher{ pos: position{line: 464, col: 29, offset: 14474}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 464, col: 33, offset: 14478}, name: "ws", }, &labeledExpr{ pos: position{line: 464, col: 36, offset: 14481}, label: "ex", expr: &ruleRefExpr{ pos: position{line: 464, col: 39, offset: 14484}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 464, col: 50, offset: 14495}, name: "ws", }, &litMatcher{ pos: position{line: 464, col: 53, offset: 14498}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "ArrayConcatExpression", pos: position{line: 468, col: 1, offset: 14586}, expr: &actionExpr{ pos: position{line: 468, col: 26, offset: 14611}, run: (*parser).callonArrayConcatExpression1, expr: &seqExpr{ pos: position{line: 468, col: 26, offset: 14611}, exprs: []any{ &litMatcher{ pos: position{line: 468, col: 26, offset: 14611}, val: "array_concat", ignoreCase: true, want: "\"ARRAY_CONCAT\"i", }, &ruleRefExpr{ pos: position{line: 468, col: 42, offset: 14627}, name: "ws", }, &litMatcher{ pos: position{line: 468, col: 45, offset: 14630}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 468, col: 49, offset: 14634}, name: "ws", }, &labeledExpr{ pos: position{line: 468, col: 52, offset: 14637}, label: "arrays", expr: &ruleRefExpr{ pos: position{line: 468, col: 59, offset: 14644}, name: "SelectItem", }, }, &labeledExpr{ pos: position{line: 468, col: 70, offset: 14655}, label: "others", expr: &oneOrMoreExpr{ pos: position{line: 468, col: 77, offset: 14662}, expr: &actionExpr{ pos: position{line: 468, col: 78, offset: 14663}, run: (*parser).callonArrayConcatExpression11, expr: &seqExpr{ pos: position{line: 468, col: 78, offset: 14663}, exprs: []any{ &ruleRefExpr{ pos: position{line: 468, col: 78, offset: 14663}, name: "ws", }, &litMatcher{ pos: position{line: 468, col: 81, offset: 14666}, val: ",", ignoreCase: false, want: "\",\"", }, &ruleRefExpr{ pos: position{line: 468, col: 85, offset: 14670}, name: "ws", }, &labeledExpr{ pos: position{line: 468, col: 88, offset: 14673}, label: "ex", expr: &ruleRefExpr{ pos: position{line: 468, col: 91, offset: 14676}, name: "SelectItem", }, }, }, }, }, }, }, &ruleRefExpr{ pos: position{line: 468, col: 123, offset: 14708}, name: "ws", }, &litMatcher{ pos: position{line: 468, col: 126, offset: 14711}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "ArrayLengthExpression", pos: position{line: 472, col: 1, offset: 14841}, expr: &actionExpr{ pos: position{line: 472, col: 26, offset: 14866}, run: (*parser).callonArrayLengthExpression1, expr: &seqExpr{ pos: position{line: 472, col: 26, offset: 14866}, exprs: []any{ &litMatcher{ pos: position{line: 472, col: 26, offset: 14866}, val: "array_length", ignoreCase: true, want: "\"ARRAY_LENGTH\"i", }, &ruleRefExpr{ pos: position{line: 472, col: 42, offset: 14882}, name: "ws", }, &litMatcher{ pos: position{line: 472, col: 45, offset: 14885}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 472, col: 49, offset: 14889}, name: "ws", }, &labeledExpr{ pos: position{line: 472, col: 52, offset: 14892}, label: "array", expr: &ruleRefExpr{ pos: position{line: 472, col: 58, offset: 14898}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 472, col: 69, offset: 14909}, name: "ws", }, &litMatcher{ pos: position{line: 472, col: 72, offset: 14912}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "ArraySliceExpression", pos: position{line: 476, col: 1, offset: 15006}, expr: &actionExpr{ pos: position{line: 476, col: 25, offset: 15030}, run: (*parser).callonArraySliceExpression1, expr: &seqExpr{ pos: position{line: 476, col: 25, offset: 15030}, exprs: []any{ &litMatcher{ pos: position{line: 476, col: 25, offset: 15030}, val: "array_slice", ignoreCase: true, want: "\"ARRAY_SLICE\"i", }, &ruleRefExpr{ pos: position{line: 476, col: 40, offset: 15045}, name: "ws", }, &litMatcher{ pos: position{line: 476, col: 43, offset: 15048}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 476, col: 47, offset: 15052}, name: "ws", }, &labeledExpr{ pos: position{line: 476, col: 50, offset: 15055}, label: "array", expr: &ruleRefExpr{ pos: position{line: 476, col: 56, offset: 15061}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 476, col: 67, offset: 15072}, name: "ws", }, &litMatcher{ pos: position{line: 476, col: 70, offset: 15075}, val: ",", ignoreCase: false, want: "\",\"", }, &ruleRefExpr{ pos: position{line: 476, col: 74, offset: 15079}, name: "ws", }, &labeledExpr{ pos: position{line: 476, col: 77, offset: 15082}, label: "start", expr: &ruleRefExpr{ pos: position{line: 476, col: 83, offset: 15088}, name: "SelectItem", }, }, &labeledExpr{ pos: position{line: 476, col: 94, offset: 15099}, label: "length", expr: &zeroOrOneExpr{ pos: position{line: 476, col: 101, offset: 15106}, expr: &actionExpr{ pos: position{line: 476, col: 102, offset: 15107}, run: (*parser).callonArraySliceExpression16, expr: &seqExpr{ pos: position{line: 476, col: 102, offset: 15107}, exprs: []any{ &ruleRefExpr{ pos: position{line: 476, col: 102, offset: 15107}, name: "ws", }, &litMatcher{ pos: position{line: 476, col: 105, offset: 15110}, val: ",", ignoreCase: false, want: "\",\"", }, &ruleRefExpr{ pos: position{line: 476, col: 109, offset: 15114}, name: "ws", }, &labeledExpr{ pos: position{line: 476, col: 112, offset: 15117}, label: "ex", expr: &ruleRefExpr{ pos: position{line: 476, col: 115, offset: 15120}, name: "SelectItem", }, }, }, }, }, }, }, &ruleRefExpr{ pos: position{line: 476, col: 147, offset: 15152}, name: "ws", }, &litMatcher{ pos: position{line: 476, col: 150, offset: 15155}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "SetIntersectExpression", pos: position{line: 480, col: 1, offset: 15263}, expr: &actionExpr{ pos: position{line: 480, col: 27, offset: 15289}, run: (*parser).callonSetIntersectExpression1, expr: &seqExpr{ pos: position{line: 480, col: 27, offset: 15289}, exprs: []any{ &litMatcher{ pos: position{line: 480, col: 27, offset: 15289}, val: "setintersect", ignoreCase: true, want: "\"SetIntersect\"i", }, &ruleRefExpr{ pos: position{line: 480, col: 43, offset: 15305}, name: "ws", }, &litMatcher{ pos: position{line: 480, col: 46, offset: 15308}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 480, col: 50, offset: 15312}, name: "ws", }, &labeledExpr{ pos: position{line: 480, col: 53, offset: 15315}, label: "set1", expr: &ruleRefExpr{ pos: position{line: 480, col: 58, offset: 15320}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 480, col: 69, offset: 15331}, name: "ws", }, &litMatcher{ pos: position{line: 480, col: 72, offset: 15334}, val: ",", ignoreCase: false, want: "\",\"", }, &ruleRefExpr{ pos: position{line: 480, col: 76, offset: 15338}, name: "ws", }, &labeledExpr{ pos: position{line: 480, col: 79, offset: 15341}, label: "set2", expr: &ruleRefExpr{ pos: position{line: 480, col: 84, offset: 15346}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 480, col: 95, offset: 15357}, name: "ws", }, &litMatcher{ pos: position{line: 480, col: 98, offset: 15360}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "SetUnionExpression", pos: position{line: 484, col: 1, offset: 15460}, expr: &actionExpr{ pos: position{line: 484, col: 23, offset: 15482}, run: (*parser).callonSetUnionExpression1, expr: &seqExpr{ pos: position{line: 484, col: 23, offset: 15482}, exprs: []any{ &litMatcher{ pos: position{line: 484, col: 23, offset: 15482}, val: "setunion", ignoreCase: true, want: "\"SetUnion\"i", }, &ruleRefExpr{ pos: position{line: 484, col: 35, offset: 15494}, name: "ws", }, &litMatcher{ pos: position{line: 484, col: 38, offset: 15497}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 484, col: 42, offset: 15501}, name: "ws", }, &labeledExpr{ pos: position{line: 484, col: 45, offset: 15504}, label: "set1", expr: &ruleRefExpr{ pos: position{line: 484, col: 50, offset: 15509}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 484, col: 61, offset: 15520}, name: "ws", }, &litMatcher{ pos: position{line: 484, col: 64, offset: 15523}, val: ",", ignoreCase: false, want: "\",\"", }, &ruleRefExpr{ pos: position{line: 484, col: 68, offset: 15527}, name: "ws", }, &labeledExpr{ pos: position{line: 484, col: 71, offset: 15530}, label: "set2", expr: &ruleRefExpr{ pos: position{line: 484, col: 76, offset: 15535}, name: "SelectItem", }, }, &ruleRefExpr{ pos: position{line: 484, col: 87, offset: 15546}, name: "ws", }, &litMatcher{ pos: position{line: 484, col: 90, offset: 15549}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "InFunction", pos: position{line: 488, col: 1, offset: 15645}, expr: &actionExpr{ pos: position{line: 488, col: 15, offset: 15659}, run: (*parser).callonInFunction1, expr: &seqExpr{ pos: position{line: 488, col: 15, offset: 15659}, exprs: []any{ &labeledExpr{ pos: position{line: 488, col: 15, offset: 15659}, label: "ex1", expr: &ruleRefExpr{ pos: position{line: 488, col: 19, offset: 15663}, name: "SelectProperty", }, }, &ruleRefExpr{ pos: position{line: 488, col: 34, offset: 15678}, name: "ws", }, &litMatcher{ pos: position{line: 488, col: 37, offset: 15681}, val: "in", ignoreCase: true, want: "\"IN\"i", }, &ruleRefExpr{ pos: position{line: 488, col: 43, offset: 15687}, name: "ws", }, &litMatcher{ pos: position{line: 488, col: 46, offset: 15690}, val: "(", ignoreCase: false, want: "\"(\"", }, &ruleRefExpr{ pos: position{line: 488, col: 50, offset: 15694}, name: "ws", }, &labeledExpr{ pos: position{line: 488, col: 53, offset: 15697}, label: "ex2", expr: &ruleRefExpr{ pos: position{line: 488, col: 57, offset: 15701}, name: "SelectItem", }, }, &labeledExpr{ pos: position{line: 488, col: 68, offset: 15712}, label: "others", expr: &zeroOrMoreExpr{ pos: position{line: 488, col: 75, offset: 15719}, expr: &actionExpr{ pos: position{line: 488, col: 76, offset: 15720}, run: (*parser).callonInFunction14, expr: &seqExpr{ pos: position{line: 488, col: 76, offset: 15720}, exprs: []any{ &ruleRefExpr{ pos: position{line: 488, col: 76, offset: 15720}, name: "ws", }, &litMatcher{ pos: position{line: 488, col: 79, offset: 15723}, val: ",", ignoreCase: false, want: "\",\"", }, &ruleRefExpr{ pos: position{line: 488, col: 83, offset: 15727}, name: "ws", }, &labeledExpr{ pos: position{line: 488, col: 86, offset: 15730}, label: "ex", expr: &ruleRefExpr{ pos: position{line: 488, col: 89, offset: 15733}, name: "SelectItem", }, }, }, }, }, }, }, &ruleRefExpr{ pos: position{line: 488, col: 121, offset: 15765}, name: "ws", }, &litMatcher{ pos: position{line: 488, col: 124, offset: 15768}, val: ")", ignoreCase: false, want: "\")\"", }, }, }, }, }, { name: "Integer", pos: position{line: 492, col: 1, offset: 15891}, expr: &actionExpr{ pos: position{line: 492, col: 12, offset: 15902}, run: (*parser).callonInteger1, expr: &oneOrMoreExpr{ pos: position{line: 492, col: 12, offset: 15902}, expr: &charClassMatcher{ pos: position{line: 492, col: 12, offset: 15902}, val: "[0-9]", ranges: []rune{'0', '9'}, ignoreCase: false, inverted: false, }, }, }, }, { name: "StringCharacter", pos: position{line: 496, col: 1, offset: 15954}, expr: &choiceExpr{ pos: position{line: 496, col: 20, offset: 15973}, alternatives: []any{ &actionExpr{ pos: position{line: 496, col: 20, offset: 15973}, run: (*parser).callonStringCharacter2, expr: &seqExpr{ pos: position{line: 496, col: 20, offset: 15973}, exprs: []any{ ¬Expr{ pos: position{line: 496, col: 20, offset: 15973}, expr: &choiceExpr{ pos: position{line: 496, col: 22, offset: 15975}, alternatives: []any{ &litMatcher{ pos: position{line: 496, col: 22, offset: 15975}, val: "\"", ignoreCase: false, want: "\"\\\"\"", }, &litMatcher{ pos: position{line: 496, col: 28, offset: 15981}, val: "\\", ignoreCase: false, want: "\"\\\\\"", }, }, }, }, &anyMatcher{ line: 496, col: 34, offset: 15987, }, }, }, }, &actionExpr{ pos: position{line: 497, col: 5, offset: 16024}, run: (*parser).callonStringCharacter9, expr: &seqExpr{ pos: position{line: 497, col: 5, offset: 16024}, exprs: []any{ &litMatcher{ pos: position{line: 497, col: 5, offset: 16024}, val: "\\", ignoreCase: false, want: "\"\\\\\"", }, &labeledExpr{ pos: position{line: 497, col: 10, offset: 16029}, label: "seq", expr: &ruleRefExpr{ pos: position{line: 497, col: 14, offset: 16033}, name: "EscapeSequenceCharacter", }, }, }, }, }, }, }, }, { name: "EscapeSequenceCharacter", pos: position{line: 499, col: 1, offset: 16078}, expr: &labeledExpr{ pos: position{line: 499, col: 28, offset: 16105}, label: "char", expr: &ruleRefExpr{ pos: position{line: 499, col: 33, offset: 16110}, name: "EscapeCharacter", }, }, }, { name: "EscapeCharacter", pos: position{line: 501, col: 1, offset: 16127}, expr: &choiceExpr{ pos: position{line: 501, col: 20, offset: 16146}, alternatives: []any{ &litMatcher{ pos: position{line: 501, col: 20, offset: 16146}, val: "'", ignoreCase: false, want: "\"'\"", }, &litMatcher{ pos: position{line: 502, col: 5, offset: 16154}, val: "\"", ignoreCase: false, want: "\"\\\"\"", }, &litMatcher{ pos: position{line: 503, col: 5, offset: 16162}, val: "\\", ignoreCase: false, want: "\"\\\\\"", }, &actionExpr{ pos: position{line: 504, col: 5, offset: 16171}, run: (*parser).callonEscapeCharacter5, expr: &litMatcher{ pos: position{line: 504, col: 5, offset: 16171}, val: "b", ignoreCase: false, want: "\"b\"", }, }, &actionExpr{ pos: position{line: 505, col: 5, offset: 16200}, run: (*parser).callonEscapeCharacter7, expr: &litMatcher{ pos: position{line: 505, col: 5, offset: 16200}, val: "f", ignoreCase: false, want: "\"f\"", }, }, &actionExpr{ pos: position{line: 506, col: 5, offset: 16229}, run: (*parser).callonEscapeCharacter9, expr: &litMatcher{ pos: position{line: 506, col: 5, offset: 16229}, val: "n", ignoreCase: false, want: "\"n\"", }, }, &actionExpr{ pos: position{line: 507, col: 5, offset: 16258}, run: (*parser).callonEscapeCharacter11, expr: &litMatcher{ pos: position{line: 507, col: 5, offset: 16258}, val: "r", ignoreCase: false, want: "\"r\"", }, }, &actionExpr{ pos: position{line: 508, col: 5, offset: 16287}, run: (*parser).callonEscapeCharacter13, expr: &litMatcher{ pos: position{line: 508, col: 5, offset: 16287}, val: "t", ignoreCase: false, want: "\"t\"", }, }, }, }, }, { name: "non_escape_character", pos: position{line: 510, col: 1, offset: 16313}, expr: &actionExpr{ pos: position{line: 510, col: 25, offset: 16337}, run: (*parser).callonnon_escape_character1, expr: &seqExpr{ pos: position{line: 510, col: 25, offset: 16337}, exprs: []any{ ¬Expr{ pos: position{line: 510, col: 25, offset: 16337}, expr: &ruleRefExpr{ pos: position{line: 510, col: 27, offset: 16339}, name: "escape_character", }, }, &labeledExpr{ pos: position{line: 510, col: 45, offset: 16357}, label: "char", expr: &anyMatcher{ line: 510, col: 50, offset: 16362, }, }, }, }, }, }, { name: "ws", pos: position{line: 513, col: 1, offset: 16401}, expr: &zeroOrMoreExpr{ pos: position{line: 513, col: 7, offset: 16407}, expr: &charClassMatcher{ pos: position{line: 513, col: 7, offset: 16407}, val: "[ \\t\\n\\r]", chars: []rune{' ', '\t', '\n', '\r'}, ignoreCase: false, inverted: false, }, }, }, { name: "EOF", pos: position{line: 515, col: 1, offset: 16419}, expr: ¬Expr{ pos: position{line: 515, col: 8, offset: 16426}, expr: &anyMatcher{ line: 515, col: 9, offset: 16427, }, }, }, }, } func (c *current) onInput1(selectStmt any) (any, error) { return selectStmt, nil } func (p *parser) callonInput1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onInput1(stack["selectStmt"]) } func (c *current) onSelectStmt19(condition any) (any, error) { return condition, nil } func (p *parser) callonSelectStmt19() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectStmt19(stack["condition"]) } func (c *current) onSelectStmt1(topClause, columns, table, whereClause, orderByClause any) (any, error) { return makeSelectStmt(columns, table, whereClause, topClause, orderByClause) } func (p *parser) callonSelectStmt1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectStmt1(stack["topClause"], stack["columns"], stack["table"], stack["whereClause"], stack["orderByClause"]) } func (c *current) onTopClause1(count any) (any, error) { return count, nil } func (p *parser) callonTopClause1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onTopClause1(stack["count"]) } func (c *current) onSelectAsterisk1() (any, error) { selectItem, _ := makeSelectItem("c", make([]interface{}, 0), parsers.SelectItemTypeField) selectItem.IsTopLevel = true return makeColumnList(selectItem, make([]interface{}, 0)) } func (p *parser) callonSelectAsterisk1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectAsterisk1() } func (c *current) onColumnList7(coll any) (any, error) { return coll, nil } func (p *parser) callonColumnList7() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onColumnList7(stack["coll"]) } func (c *current) onColumnList1(column, other_columns any) (any, error) { return makeColumnList(column, other_columns) } func (p *parser) callonColumnList1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onColumnList1(stack["column"], stack["other_columns"]) } func (c *current) onSelectValueSpec1(column any) (any, error) { selectItem := column.(parsers.SelectItem) selectItem.IsTopLevel = true return makeColumnList(selectItem, make([]interface{}, 0)) } func (p *parser) callonSelectValueSpec1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectValueSpec1(stack["column"]) } func (c *current) onTableName1(key any) (any, error) { return parsers.Table{Value: key.(string)}, nil } func (p *parser) callonTableName1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onTableName1(stack["key"]) } func (c *current) onSelectArray1(columns any) (any, error) { return makeSelectArray(columns) } func (p *parser) callonSelectArray1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectArray1(stack["columns"]) } func (c *current) onSelectObject10(coll any) (any, error) { return coll, nil } func (p *parser) callonSelectObject10() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectObject10(stack["coll"]) } func (c *current) onSelectObject1(field, other_fields any) (any, error) { return makeSelectObject(field, other_fields) } func (p *parser) callonSelectObject1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectObject1(stack["field"], stack["other_fields"]) } func (c *current) onSelectObjectField6(key any) (any, error) { return key, nil } func (p *parser) callonSelectObjectField6() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectObjectField6(stack["key"]) } func (c *current) onSelectObjectField1(name, selectItem any) (any, error) { item := selectItem.(parsers.SelectItem) item.Alias = name.(string) return item, nil } func (p *parser) callonSelectObjectField1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectObjectField1(stack["name"], stack["selectItem"]) } func (c *current) onSelectProperty1(name, path any) (any, error) { return makeSelectItem(name, path, parsers.SelectItemTypeField) } func (p *parser) callonSelectProperty1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectProperty1(stack["name"], stack["path"]) } func (c *current) onSelectItem1(selectItem, asClause any) (any, error) { var itemResult parsers.SelectItem switch typedValue := selectItem.(type) { case parsers.SelectItem: itemResult = typedValue case parsers.Constant: itemResult = parsers.SelectItem{ Type: parsers.SelectItemTypeConstant, Value: typedValue, } case parsers.FunctionCall: itemResult = parsers.SelectItem{ Type: parsers.SelectItemTypeFunctionCall, Value: typedValue, } } if aliasValue, ok := asClause.(string); ok { itemResult.Alias = aliasValue } return itemResult, nil } func (p *parser) callonSelectItem1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSelectItem1(stack["selectItem"], stack["asClause"]) } func (c *current) onAsClause1(alias any) (any, error) { return alias, nil } func (p *parser) callonAsClause1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onAsClause1(stack["alias"]) } func (c *current) onDotFieldAccess1(id any) (any, error) { return id, nil } func (p *parser) callonDotFieldAccess1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onDotFieldAccess1(stack["id"]) } func (c *current) onArrayFieldAccess1(id any) (any, error) { return id, nil } func (p *parser) callonArrayFieldAccess1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onArrayFieldAccess1(stack["id"]) } func (c *current) onIdentifier1() (any, error) { return string(c.text), nil } func (p *parser) callonIdentifier1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIdentifier1() } func (c *current) onCondition1(expression any) (any, error) { return expression, nil } func (p *parser) callonCondition1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onCondition1(stack["expression"]) } func (c *current) onOrExpression7(ex any) (any, error) { return ex, nil } func (p *parser) callonOrExpression7() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onOrExpression7(stack["ex"]) } func (c *current) onOrExpression1(ex1, ex2 any) (any, error) { return combineExpressions(ex1, ex2, parsers.LogicalExpressionTypeOr) } func (p *parser) callonOrExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onOrExpression1(stack["ex1"], stack["ex2"]) } func (c *current) onAndExpression7(ex any) (any, error) { return ex, nil } func (p *parser) callonAndExpression7() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onAndExpression7(stack["ex"]) } func (c *current) onAndExpression1(ex1, ex2 any) (any, error) { return combineExpressions(ex1, ex2, parsers.LogicalExpressionTypeAnd) } func (p *parser) callonAndExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onAndExpression1(stack["ex1"], stack["ex2"]) } func (c *current) onComparisonExpression2(ex any) (any, error) { return ex, nil } func (p *parser) callonComparisonExpression2() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onComparisonExpression2(stack["ex"]) } func (c *current) onComparisonExpression10(left, op, right any) (any, error) { return parsers.ComparisonExpression{Left: left, Right: right, Operation: op.(string)}, nil } func (p *parser) callonComparisonExpression10() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onComparisonExpression10(stack["left"], stack["op"], stack["right"]) } func (c *current) onComparisonExpression20(ex any) (any, error) { return ex, nil } func (p *parser) callonComparisonExpression20() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onComparisonExpression20(stack["ex"]) } func (c *current) onComparisonExpression23(ex any) (any, error) { return ex, nil } func (p *parser) callonComparisonExpression23() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onComparisonExpression23(stack["ex"]) } func (c *current) onOrderByClause9(ex any) (any, error) { return ex, nil } func (p *parser) callonOrderByClause9() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onOrderByClause9(stack["ex"]) } func (c *current) onOrderByClause1(ex1, others any) (any, error) { return makeOrderByClause(ex1, others) } func (p *parser) callonOrderByClause1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onOrderByClause1(stack["ex1"], stack["others"]) } func (c *current) onOrderExpression1(field, order any) (any, error) { return makeOrderExpression(field, order) } func (p *parser) callonOrderExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onOrderExpression1(stack["field"], stack["order"]) } func (c *current) onOrderDirection1() (any, error) { if strings.EqualFold(string(c.text), "DESC") { return parsers.OrderDirectionDesc, nil } return parsers.OrderDirectionAsc, nil } func (p *parser) callonOrderDirection1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onOrderDirection1() } func (c *current) onComparisonOperator1() (any, error) { return string(c.text), nil } func (p *parser) callonComparisonOperator1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onComparisonOperator1() } func (c *current) onParameterConstant1() (any, error) { return parsers.Constant{Type: parsers.ConstantTypeParameterConstant, Value: string(c.text)}, nil } func (p *parser) callonParameterConstant1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onParameterConstant1() } func (c *current) onNullConstant1() (any, error) { return parsers.Constant{Value: nil}, nil } func (p *parser) callonNullConstant1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onNullConstant1() } func (c *current) onIntegerLiteral1(number any) (any, error) { return parsers.Constant{Type: parsers.ConstantTypeInteger, Value: number.(int)}, nil } func (p *parser) callonIntegerLiteral1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIntegerLiteral1(stack["number"]) } func (c *current) onStringLiteral1(chars any) (any, error) { return parsers.Constant{Type: parsers.ConstantTypeString, Value: joinStrings(chars.([]interface{}))}, nil } func (p *parser) callonStringLiteral1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onStringLiteral1(stack["chars"]) } func (c *current) onFloatLiteral1() (any, error) { floatValue, _ := strconv.ParseFloat(string(c.text), 64) return parsers.Constant{Type: parsers.ConstantTypeFloat, Value: floatValue}, nil } func (p *parser) callonFloatLiteral1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onFloatLiteral1() } func (c *current) onBooleanLiteral1() (any, error) { boolValue, _ := strconv.ParseBool(string(c.text)) return parsers.Constant{Type: parsers.ConstantTypeBoolean, Value: boolValue}, nil } func (p *parser) callonBooleanLiteral1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onBooleanLiteral1() } func (c *current) onUpperExpression1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallUpper, []interface{}{ex}) } func (p *parser) callonUpperExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onUpperExpression1(stack["ex"]) } func (c *current) onLowerExpression1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallLower, []interface{}{ex}) } func (p *parser) callonLowerExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onLowerExpression1(stack["ex"]) } func (c *current) onStringEqualsExpression17(boolean any) (any, error) { return boolean, nil } func (p *parser) callonStringEqualsExpression17() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onStringEqualsExpression17(stack["boolean"]) } func (c *current) onStringEqualsExpression1(ex1, ex2, ignoreCase any) (any, error) { return createFunctionCall(parsers.FunctionCallStringEquals, []interface{}{ex1, ex2, ignoreCase}) } func (p *parser) callonStringEqualsExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onStringEqualsExpression1(stack["ex1"], stack["ex2"], stack["ignoreCase"]) } func (c *current) onToStringExpression1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallToString, []interface{}{ex}) } func (p *parser) callonToStringExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onToStringExpression1(stack["ex"]) } func (c *current) onConcatExpression11(ex any) (any, error) { return ex, nil } func (p *parser) callonConcatExpression11() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onConcatExpression11(stack["ex"]) } func (c *current) onConcatExpression1(ex1, others any) (any, error) { arguments := append([]interface{}{ex1}, others.([]interface{})...) return createFunctionCall(parsers.FunctionCallConcat, arguments) } func (p *parser) callonConcatExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onConcatExpression1(stack["ex1"], stack["others"]) } func (c *current) onLeftExpression1(ex, length any) (any, error) { return createFunctionCall(parsers.FunctionCallLeft, []interface{}{ex, length}) } func (p *parser) callonLeftExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onLeftExpression1(stack["ex"], stack["length"]) } func (c *current) onLengthExpression1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallLength, []interface{}{ex}) } func (p *parser) callonLengthExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onLengthExpression1(stack["ex"]) } func (c *current) onLTrimExpression1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallLTrim, []interface{}{ex}) } func (p *parser) callonLTrimExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onLTrimExpression1(stack["ex"]) } func (c *current) onReplaceExpression1(ex1, ex2, ex3 any) (any, error) { return createFunctionCall(parsers.FunctionCallReplace, []interface{}{ex1, ex2, ex3}) } func (p *parser) callonReplaceExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onReplaceExpression1(stack["ex1"], stack["ex2"], stack["ex3"]) } func (c *current) onReplicateExpression1(ex1, ex2 any) (any, error) { return createFunctionCall(parsers.FunctionCallReplicate, []interface{}{ex1, ex2}) } func (p *parser) callonReplicateExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onReplicateExpression1(stack["ex1"], stack["ex2"]) } func (c *current) onReverseExpression1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallReverse, []interface{}{ex}) } func (p *parser) callonReverseExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onReverseExpression1(stack["ex"]) } func (c *current) onRightExpression1(ex, length any) (any, error) { return createFunctionCall(parsers.FunctionCallRight, []interface{}{ex, length}) } func (p *parser) callonRightExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onRightExpression1(stack["ex"], stack["length"]) } func (c *current) onRTrimExpression1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallRTrim, []interface{}{ex}) } func (p *parser) callonRTrimExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onRTrimExpression1(stack["ex"]) } func (c *current) onSubstringExpression1(ex, startPos, length any) (any, error) { return createFunctionCall(parsers.FunctionCallSubstring, []interface{}{ex, startPos, length}) } func (p *parser) callonSubstringExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSubstringExpression1(stack["ex"], stack["startPos"], stack["length"]) } func (c *current) onTrimExpression1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallTrim, []interface{}{ex}) } func (p *parser) callonTrimExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onTrimExpression1(stack["ex"]) } func (c *current) onThreeArgumentStringFunctionExpression18(boolean any) (any, error) { return boolean, nil } func (p *parser) callonThreeArgumentStringFunctionExpression18() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onThreeArgumentStringFunctionExpression18(stack["boolean"]) } func (c *current) onThreeArgumentStringFunctionExpression1(function, ex1, ex2, ignoreCase any) (any, error) { var functionType parsers.FunctionCallType lowerFunction := strings.ToUpper(function.(string)) switch lowerFunction { case "CONTAINS": functionType = parsers.FunctionCallContains case "ENDSWITH": functionType = parsers.FunctionCallEndsWith case "STARTSWITH": functionType = parsers.FunctionCallStartsWith case "INDEX_OF": functionType = parsers.FunctionCallIndexOf } return createFunctionCall(functionType, []interface{}{ex1, ex2, ignoreCase}) } func (p *parser) callonThreeArgumentStringFunctionExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onThreeArgumentStringFunctionExpression1(stack["function"], stack["ex1"], stack["ex2"], stack["ignoreCase"]) } func (c *current) onThreeArgumentStringFunction1() (any, error) { return string(c.text), nil } func (p *parser) callonThreeArgumentStringFunction1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onThreeArgumentStringFunction1() } func (c *current) onIsDefined1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsDefined, []interface{}{ex}) } func (p *parser) callonIsDefined1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsDefined1(stack["ex"]) } func (c *current) onIsArray1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsArray, []interface{}{ex}) } func (p *parser) callonIsArray1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsArray1(stack["ex"]) } func (c *current) onIsBool1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsBool, []interface{}{ex}) } func (p *parser) callonIsBool1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsBool1(stack["ex"]) } func (c *current) onIsFiniteNumber1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsFiniteNumber, []interface{}{ex}) } func (p *parser) callonIsFiniteNumber1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsFiniteNumber1(stack["ex"]) } func (c *current) onIsInteger1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsInteger, []interface{}{ex}) } func (p *parser) callonIsInteger1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsInteger1(stack["ex"]) } func (c *current) onIsNull1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsNull, []interface{}{ex}) } func (p *parser) callonIsNull1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsNull1(stack["ex"]) } func (c *current) onIsNumber1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsNumber, []interface{}{ex}) } func (p *parser) callonIsNumber1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsNumber1(stack["ex"]) } func (c *current) onIsObject1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsObject, []interface{}{ex}) } func (p *parser) callonIsObject1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsObject1(stack["ex"]) } func (c *current) onIsPrimitive1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsPrimitive, []interface{}{ex}) } func (p *parser) callonIsPrimitive1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsPrimitive1(stack["ex"]) } func (c *current) onIsString1(ex any) (any, error) { return createFunctionCall(parsers.FunctionCallIsString, []interface{}{ex}) } func (p *parser) callonIsString1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onIsString1(stack["ex"]) } func (c *current) onArrayConcatExpression11(ex any) (any, error) { return ex, nil } func (p *parser) callonArrayConcatExpression11() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onArrayConcatExpression11(stack["ex"]) } func (c *current) onArrayConcatExpression1(arrays, others any) (any, error) { return createFunctionCall(parsers.FunctionCallArrayConcat, append([]interface{}{arrays}, others.([]interface{})...)) } func (p *parser) callonArrayConcatExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onArrayConcatExpression1(stack["arrays"], stack["others"]) } func (c *current) onArrayLengthExpression1(array any) (any, error) { return createFunctionCall(parsers.FunctionCallArrayLength, []interface{}{array}) } func (p *parser) callonArrayLengthExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onArrayLengthExpression1(stack["array"]) } func (c *current) onArraySliceExpression16(ex any) (any, error) { return ex, nil } func (p *parser) callonArraySliceExpression16() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onArraySliceExpression16(stack["ex"]) } func (c *current) onArraySliceExpression1(array, start, length any) (any, error) { return createFunctionCall(parsers.FunctionCallArraySlice, []interface{}{array, start, length}) } func (p *parser) callonArraySliceExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onArraySliceExpression1(stack["array"], stack["start"], stack["length"]) } func (c *current) onSetIntersectExpression1(set1, set2 any) (any, error) { return createFunctionCall(parsers.FunctionCallSetIntersect, []interface{}{set1, set2}) } func (p *parser) callonSetIntersectExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSetIntersectExpression1(stack["set1"], stack["set2"]) } func (c *current) onSetUnionExpression1(set1, set2 any) (any, error) { return createFunctionCall(parsers.FunctionCallSetUnion, []interface{}{set1, set2}) } func (p *parser) callonSetUnionExpression1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onSetUnionExpression1(stack["set1"], stack["set2"]) } func (c *current) onInFunction14(ex any) (any, error) { return ex, nil } func (p *parser) callonInFunction14() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onInFunction14(stack["ex"]) } func (c *current) onInFunction1(ex1, ex2, others any) (any, error) { return createFunctionCall(parsers.FunctionCallIn, append([]interface{}{ex1, ex2}, others.([]interface{})...)) } func (p *parser) callonInFunction1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onInFunction1(stack["ex1"], stack["ex2"], stack["others"]) } func (c *current) onInteger1() (any, error) { return strconv.Atoi(string(c.text)) } func (p *parser) callonInteger1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onInteger1() } func (c *current) onStringCharacter2() (any, error) { return string(c.text), nil } func (p *parser) callonStringCharacter2() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onStringCharacter2() } func (c *current) onStringCharacter9(seq any) (any, error) { return seq, nil } func (p *parser) callonStringCharacter9() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onStringCharacter9(stack["seq"]) } func (c *current) onEscapeCharacter5() (any, error) { return "\b", nil } func (p *parser) callonEscapeCharacter5() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onEscapeCharacter5() } func (c *current) onEscapeCharacter7() (any, error) { return "\f", nil } func (p *parser) callonEscapeCharacter7() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onEscapeCharacter7() } func (c *current) onEscapeCharacter9() (any, error) { return "\n", nil } func (p *parser) callonEscapeCharacter9() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onEscapeCharacter9() } func (c *current) onEscapeCharacter11() (any, error) { return "\r", nil } func (p *parser) callonEscapeCharacter11() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onEscapeCharacter11() } func (c *current) onEscapeCharacter13() (any, error) { return "\t", nil } func (p *parser) callonEscapeCharacter13() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onEscapeCharacter13() } func (c *current) onnon_escape_character1(char any) (any, error) { return string(c.text), nil } func (p *parser) callonnon_escape_character1() (any, error) { stack := p.vstack[len(p.vstack)-1] _ = stack return p.cur.onnon_escape_character1(stack["char"]) } 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 expressions 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) } } // Statistics adds a user provided Stats struct to the parser to allow // the user to process the results after the parsing has finished. // Also the key for the "no match" counter is set. // // Example usage: // // input := "input" // stats := Stats{} // _, err := Parse("input-file", []byte(input), Statistics(&stats, "no match")) // if err != nil { // log.Panicln(err) // } // b, err := json.MarshalIndent(stats.ChoiceAltCnt, "", " ") // if err != nil { // log.Panicln(err) // } // fmt.Println(string(b)) func Statistics(stats *Stats, choiceNoMatch string) Option { return func(p *parser) Option { oldStats := p.Stats p.Stats = stats oldChoiceNoMatch := p.choiceNoMatch p.choiceNoMatch = choiceNoMatch if p.Stats.ChoiceAltCnt == nil { p.Stats.ChoiceAltCnt = make(map[string]map[string]int) } return Statistics(oldStats, oldChoiceNoMatch) } } // Debug creates an Option to set the debug flag to b. When set to true, // debugging information is printed to stdout while parsing. // // The default is false. func Debug(b bool) Option { return func(p *parser) Option { old := p.debug p.debug = b return Debug(old) } } // Memoize creates an Option to set the memoize flag to b. When set to true, // the parser will cache all results so each expression is evaluated only // once. This guarantees linear parsing time even for pathological cases, // at the expense of more memory and slower times for typical cases. // // The default is false. func Memoize(b bool) Option { return func(p *parser) Option { old := p.memoize p.memoize = b return Memoize(old) } } // 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) } } // InitState creates an Option to set a key to a certain value in // the global "state" store. func InitState(key string, value any) Option { return func(p *parser) Option { old := p.cur.state[key] p.cur.state[key] = value return InitState(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 // state is a store for arbitrary key,value pairs that the user wants to be // tied to the backtracking of the parser. // This is always rolled back if a parsing rule fails. state storeDict // 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 } 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 stateCodeExpr struct { pos position run func(*parser) error } 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{ state: make(storeDict), 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 parser struct { filename string pt savepoint cur current data []byte errs *errList depth int recover bool debug bool memoize 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) print(prefix, s string) string { if !p.debug { return s } fmt.Printf("%s %d:%d:%d: %s [%#U]\n", prefix, p.pt.line, p.pt.col, p.pt.offset, s, p.pt.rn) return s } func (p *parser) printIndent(mark string, s string) string { return p.print(strings.Repeat(" ", p.depth)+mark, s) } func (p *parser) in(s string) string { res := p.printIndent(">", s) p.depth++ return res } func (p *parser) out(s string) string { p.depth-- return p.printIndent("<", s) } 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 p.debug { defer p.out(p.in("restore")) } if pt.offset == p.pt.offset { return } p.pt = pt } // Cloner is implemented by any value that has a Clone method, which returns a // copy of the value. This is mainly used for types which are not passed by // value (e.g map, slice, chan) or structs that contain such types. // // This is used in conjunction with the global state feature to create proper // copies of the state to allow the parser to properly restore the state in // the case of backtracking. type Cloner interface { Clone() any } var statePool = &sync.Pool{ New: func() any { return make(storeDict) }, } func (sd storeDict) Discard() { for k := range sd { delete(sd, k) } statePool.Put(sd) } // clone and return parser current state. func (p *parser) cloneState() storeDict { if p.debug { defer p.out(p.in("cloneState")) } state := statePool.Get().(storeDict) for k, v := range p.cur.state { if c, ok := v.(Cloner); ok { state[k] = c.Clone() } else { state[k] = v } } return state } // restore parser current state to the state storeDict. // every restoreState should applied only one time for every cloned state func (p *parser) restoreState(state storeDict) { if p.debug { defer p.out(p.in("restoreState")) } p.cur.state.Discard() p.cur.state = state } // 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 { if p.debug { defer p.out(p.in("panic handler")) } 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) parseRuleMemoize(rule *rule) (any, bool) { res, ok := p.getMemoized(rule) if ok { p.restore(res.end) return res.v, res.b } startMark := p.pt val, ok := p.parseRule(rule) p.setMemoized(startMark, rule, resultTuple{val, ok, p.pt}) return val, ok } func (p *parser) parseRuleWrap(rule *rule) (any, bool) { if p.debug { defer p.out(p.in("parseRule " + rule.name)) } var ( val any ok bool startMark = p.pt ) if p.memoize { val, ok = p.parseRuleMemoize(rule) } else { val, ok = p.parseRule(rule) } if ok && p.debug { p.printIndent("MATCH", string(p.sliceFrom(startMark))) } 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) { var pt savepoint if p.memoize { res, ok := p.getMemoized(expr) if ok { p.restore(res.end) return res.v, res.b } pt = p.pt } val, ok := p.parseExpr(expr) if p.memoize { p.setMemoized(pt, expr, resultTuple{val, ok, p.pt}) } 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 *stateCodeExpr: val, ok = p.parseStateCodeExpr(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) { if p.debug { defer p.out(p.in("parseActionExpr")) } start := p.pt val, ok := p.parseExprWrap(act.expr) if ok { p.cur.pos = start.position p.cur.text = p.sliceFrom(start) state := p.cloneState() actVal, err := act.run(p) if err != nil { p.addErrAt(err, start.position, []string{}) } p.restoreState(state) val = actVal } if ok && p.debug { p.printIndent("MATCH", string(p.sliceFrom(start))) } return val, ok } func (p *parser) parseAndCodeExpr(and *andCodeExpr) (any, bool) { if p.debug { defer p.out(p.in("parseAndCodeExpr")) } state := p.cloneState() ok, err := and.run(p) if err != nil { p.addErr(err) } p.restoreState(state) return nil, ok } func (p *parser) parseAndExpr(and *andExpr) (any, bool) { if p.debug { defer p.out(p.in("parseAndExpr")) } pt := p.pt state := p.cloneState() p.pushV() _, ok := p.parseExprWrap(and.expr) p.popV() p.restoreState(state) p.restore(pt) return nil, ok } func (p *parser) parseAnyMatcher(any *anyMatcher) (any, bool) { if p.debug { defer p.out(p.in("parseAnyMatcher")) } 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) { if p.debug { defer p.out(p.in("parseCharClassMatcher")) } 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) incChoiceAltCnt(ch *choiceExpr, altI int) { choiceIdent := fmt.Sprintf("%s %d:%d", p.rstack[len(p.rstack)-1].name, ch.pos.line, ch.pos.col) m := p.ChoiceAltCnt[choiceIdent] if m == nil { m = make(map[string]int) p.ChoiceAltCnt[choiceIdent] = m } // We increment altI by 1, so the keys do not start at 0 alt := strconv.Itoa(altI + 1) if altI == choiceNoMatch { alt = p.choiceNoMatch } m[alt]++ } func (p *parser) parseChoiceExpr(ch *choiceExpr) (any, bool) { if p.debug { defer p.out(p.in("parseChoiceExpr")) } for altI, alt := range ch.alternatives { // dummy assignment to prevent compile error if optimized _ = altI state := p.cloneState() p.pushV() val, ok := p.parseExprWrap(alt) p.popV() if ok { p.incChoiceAltCnt(ch, altI) return val, ok } p.restoreState(state) } p.incChoiceAltCnt(ch, choiceNoMatch) return nil, false } func (p *parser) parseLabeledExpr(lab *labeledExpr) (any, bool) { if p.debug { defer p.out(p.in("parseLabeledExpr")) } 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) { if p.debug { defer p.out(p.in("parseLitMatcher")) } 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) { if p.debug { defer p.out(p.in("parseNotCodeExpr")) } state := p.cloneState() ok, err := not.run(p) if err != nil { p.addErr(err) } p.restoreState(state) return nil, !ok } func (p *parser) parseNotExpr(not *notExpr) (any, bool) { if p.debug { defer p.out(p.in("parseNotExpr")) } pt := p.pt state := p.cloneState() p.pushV() p.maxFailInvertExpected = !p.maxFailInvertExpected _, ok := p.parseExprWrap(not.expr) p.maxFailInvertExpected = !p.maxFailInvertExpected p.popV() p.restoreState(state) p.restore(pt) return nil, !ok } func (p *parser) parseOneOrMoreExpr(expr *oneOrMoreExpr) (any, bool) { if p.debug { defer p.out(p.in("parseOneOrMoreExpr")) } 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) { if p.debug { defer p.out(p.in("parseRecoveryExpr (" + strings.Join(recover.failureLabel, ",") + ")")) } 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 p.debug { defer p.out(p.in("parseRuleRefExpr " + ref.name)) } 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) { if p.debug { defer p.out(p.in("parseSeqExpr")) } vals := make([]any, 0, len(seq.exprs)) pt := p.pt state := p.cloneState() for _, expr := range seq.exprs { val, ok := p.parseExprWrap(expr) if !ok { p.restoreState(state) p.restore(pt) return nil, false } vals = append(vals, val) } return vals, true } func (p *parser) parseStateCodeExpr(state *stateCodeExpr) (any, bool) { if p.debug { defer p.out(p.in("parseStateCodeExpr")) } err := state.run(p) if err != nil { p.addErr(err) } return nil, true } func (p *parser) parseThrowExpr(expr *throwExpr) (any, bool) { if p.debug { defer p.out(p.in("parseThrowExpr")) } 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) { if p.debug { defer p.out(p.in("parseZeroOrMoreExpr")) } 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) { if p.debug { defer p.out(p.in("parseZeroOrOneExpr")) } p.pushV() val, _ := p.parseExprWrap(expr.expr) p.popV() // whether it matched or not, consider it a match return val, true }