diff options
Diffstat (limited to 'vendor/github.com/pelletier/go-toml/query')
| -rw-r--r-- | vendor/github.com/pelletier/go-toml/query/doc.go | 175 | ||||
| -rw-r--r-- | vendor/github.com/pelletier/go-toml/query/lexer.go | 357 | ||||
| -rw-r--r-- | vendor/github.com/pelletier/go-toml/query/match.go | 232 | ||||
| -rw-r--r-- | vendor/github.com/pelletier/go-toml/query/parser.go | 275 | ||||
| -rw-r--r-- | vendor/github.com/pelletier/go-toml/query/query.go | 158 | ||||
| -rw-r--r-- | vendor/github.com/pelletier/go-toml/query/tokens.go | 106 |
6 files changed, 0 insertions, 1303 deletions
diff --git a/vendor/github.com/pelletier/go-toml/query/doc.go b/vendor/github.com/pelletier/go-toml/query/doc.go deleted file mode 100644 index ed63c110..00000000 --- a/vendor/github.com/pelletier/go-toml/query/doc.go +++ /dev/null @@ -1,175 +0,0 @@ -// Package query performs JSONPath-like queries on a TOML document. -// -// The query path implementation is based loosely on the JSONPath specification: -// http://goessner.net/articles/JsonPath/. -// -// The idea behind a query path is to allow quick access to any element, or set -// of elements within TOML document, with a single expression. -// -// result, err := query.CompileAndExecute("$.foo.bar.baz", tree) -// -// This is roughly equivalent to: -// -// next := tree.Get("foo") -// if next != nil { -// next = next.Get("bar") -// if next != nil { -// next = next.Get("baz") -// } -// } -// result := next -// -// err is nil if any parsing exception occurs. -// -// If no node in the tree matches the query, result will simply contain an empty list of -// items. -// -// As illustrated above, the query path is much more efficient, especially since -// the structure of the TOML file can vary. Rather than making assumptions about -// a document's structure, a query allows the programmer to make structured -// requests into the document, and get zero or more values as a result. -// -// Query syntax -// -// The syntax of a query begins with a root token, followed by any number -// sub-expressions: -// -// $ -// Root of the TOML tree. This must always come first. -// .name -// Selects child of this node, where 'name' is a TOML key -// name. -// ['name'] -// Selects child of this node, where 'name' is a string -// containing a TOML key name. -// [index] -// Selcts child array element at 'index'. -// ..expr -// Recursively selects all children, filtered by an a union, -// index, or slice expression. -// ..* -// Recursive selection of all nodes at this point in the -// tree. -// .* -// Selects all children of the current node. -// [expr,expr] -// Union operator - a logical 'or' grouping of two or more -// sub-expressions: index, key name, or filter. -// [start:end:step] -// Slice operator - selects array elements from start to -// end-1, at the given step. All three arguments are -// optional. -// [?(filter)] -// Named filter expression - the function 'filter' is -// used to filter children at this node. -// -// Query Indexes And Slices -// -// Index expressions perform no bounds checking, and will contribute no -// values to the result set if the provided index or index range is invalid. -// Negative indexes represent values from the end of the array, counting backwards. -// -// // select the last index of the array named 'foo' -// query.CompileAndExecute("$.foo[-1]", tree) -// -// Slice expressions are supported, by using ':' to separate a start/end index pair. -// -// // select up to the first five elements in the array -// query.CompileAndExecute("$.foo[0:5]", tree) -// -// Slice expressions also allow negative indexes for the start and stop -// arguments. -// -// // select all array elements. -// query.CompileAndExecute("$.foo[0:-1]", tree) -// -// Slice expressions may have an optional stride/step parameter: -// -// // select every other element -// query.CompileAndExecute("$.foo[0:-1:2]", tree) -// -// Slice start and end parameters are also optional: -// -// // these are all equivalent and select all the values in the array -// query.CompileAndExecute("$.foo[:]", tree) -// query.CompileAndExecute("$.foo[0:]", tree) -// query.CompileAndExecute("$.foo[:-1]", tree) -// query.CompileAndExecute("$.foo[0:-1:]", tree) -// query.CompileAndExecute("$.foo[::1]", tree) -// query.CompileAndExecute("$.foo[0::1]", tree) -// query.CompileAndExecute("$.foo[:-1:1]", tree) -// query.CompileAndExecute("$.foo[0:-1:1]", tree) -// -// Query Filters -// -// Query filters are used within a Union [,] or single Filter [] expression. -// A filter only allows nodes that qualify through to the next expression, -// and/or into the result set. -// -// // returns children of foo that are permitted by the 'bar' filter. -// query.CompileAndExecute("$.foo[?(bar)]", tree) -// -// There are several filters provided with the library: -// -// tree -// Allows nodes of type Tree. -// int -// Allows nodes of type int64. -// float -// Allows nodes of type float64. -// string -// Allows nodes of type string. -// time -// Allows nodes of type time.Time. -// bool -// Allows nodes of type bool. -// -// Query Results -// -// An executed query returns a Result object. This contains the nodes -// in the TOML tree that qualify the query expression. Position information -// is also available for each value in the set. -// -// // display the results of a query -// results := query.CompileAndExecute("$.foo.bar.baz", tree) -// for idx, value := results.Values() { -// fmt.Println("%v: %v", results.Positions()[idx], value) -// } -// -// Compiled Queries -// -// Queries may be executed directly on a Tree object, or compiled ahead -// of time and executed discretely. The former is more convenient, but has the -// penalty of having to recompile the query expression each time. -// -// // basic query -// results := query.CompileAndExecute("$.foo.bar.baz", tree) -// -// // compiled query -// query, err := toml.Compile("$.foo.bar.baz") -// results := query.Execute(tree) -// -// // run the compiled query again on a different tree -// moreResults := query.Execute(anotherTree) -// -// User Defined Query Filters -// -// Filter expressions may also be user defined by using the SetFilter() -// function on the Query object. The function must return true/false, which -// signifies if the passed node is kept or discarded, respectively. -// -// // create a query that references a user-defined filter -// query, _ := query.Compile("$[?(bazOnly)]") -// -// // define the filter, and assign it to the query -// query.SetFilter("bazOnly", func(node interface{}) bool{ -// if tree, ok := node.(*Tree); ok { -// return tree.Has("baz") -// } -// return false // reject all other node types -// }) -// -// // run the query -// query.Execute(tree) -// -package query diff --git a/vendor/github.com/pelletier/go-toml/query/lexer.go b/vendor/github.com/pelletier/go-toml/query/lexer.go deleted file mode 100644 index 2dc31940..00000000 --- a/vendor/github.com/pelletier/go-toml/query/lexer.go +++ /dev/null @@ -1,357 +0,0 @@ -// TOML JSONPath lexer. -// -// Written using the principles developed by Rob Pike in -// http://www.youtube.com/watch?v=HxaD_trXwRE - -package query - -import ( - "fmt" - "github.com/pelletier/go-toml" - "strconv" - "strings" - "unicode/utf8" -) - -// Lexer state function -type queryLexStateFn func() queryLexStateFn - -// Lexer definition -type queryLexer struct { - input string - start int - pos int - width int - tokens chan token - depth int - line int - col int - stringTerm string -} - -func (l *queryLexer) run() { - for state := l.lexVoid; state != nil; { - state = state() - } - close(l.tokens) -} - -func (l *queryLexer) nextStart() { - // iterate by runes (utf8 characters) - // search for newlines and advance line/col counts - for i := l.start; i < l.pos; { - r, width := utf8.DecodeRuneInString(l.input[i:]) - if r == '\n' { - l.line++ - l.col = 1 - } else { - l.col++ - } - i += width - } - // advance start position to next token - l.start = l.pos -} - -func (l *queryLexer) emit(t tokenType) { - l.tokens <- token{ - Position: toml.Position{Line: l.line, Col: l.col}, - typ: t, - val: l.input[l.start:l.pos], - } - l.nextStart() -} - -func (l *queryLexer) emitWithValue(t tokenType, value string) { - l.tokens <- token{ - Position: toml.Position{Line: l.line, Col: l.col}, - typ: t, - val: value, - } - l.nextStart() -} - -func (l *queryLexer) next() rune { - if l.pos >= len(l.input) { - l.width = 0 - return eof - } - var r rune - r, l.width = utf8.DecodeRuneInString(l.input[l.pos:]) - l.pos += l.width - return r -} - -func (l *queryLexer) ignore() { - l.nextStart() -} - -func (l *queryLexer) backup() { - l.pos -= l.width -} - -func (l *queryLexer) errorf(format string, args ...interface{}) queryLexStateFn { - l.tokens <- token{ - Position: toml.Position{Line: l.line, Col: l.col}, - typ: tokenError, - val: fmt.Sprintf(format, args...), - } - return nil -} - -func (l *queryLexer) peek() rune { - r := l.next() - l.backup() - return r -} - -func (l *queryLexer) accept(valid string) bool { - if strings.ContainsRune(valid, l.next()) { - return true - } - l.backup() - return false -} - -func (l *queryLexer) follow(next string) bool { - return strings.HasPrefix(l.input[l.pos:], next) -} - -func (l *queryLexer) lexVoid() queryLexStateFn { - for { - next := l.peek() - switch next { - case '$': - l.pos++ - l.emit(tokenDollar) - continue - case '.': - if l.follow("..") { - l.pos += 2 - l.emit(tokenDotDot) - } else { - l.pos++ - l.emit(tokenDot) - } - continue - case '[': - l.pos++ - l.emit(tokenLeftBracket) - continue - case ']': - l.pos++ - l.emit(tokenRightBracket) - continue - case ',': - l.pos++ - l.emit(tokenComma) - continue - case '*': - l.pos++ - l.emit(tokenStar) - continue - case '(': - l.pos++ - l.emit(tokenLeftParen) - continue - case ')': - l.pos++ - l.emit(tokenRightParen) - continue - case '?': - l.pos++ - l.emit(tokenQuestion) - continue - case ':': - l.pos++ - l.emit(tokenColon) - continue - case '\'': - l.ignore() - l.stringTerm = string(next) - return l.lexString - case '"': - l.ignore() - l.stringTerm = string(next) - return l.lexString - } - - if isSpace(next) { - l.next() - l.ignore() - continue - } - - if isAlphanumeric(next) { - return l.lexKey - } - - if next == '+' || next == '-' || isDigit(next) { - return l.lexNumber - } - - if l.next() == eof { - break - } - - return l.errorf("unexpected char: '%v'", next) - } - l.emit(tokenEOF) - return nil -} - -func (l *queryLexer) lexKey() queryLexStateFn { - for { - next := l.peek() - if !isAlphanumeric(next) { - l.emit(tokenKey) - return l.lexVoid - } - - if l.next() == eof { - break - } - } - l.emit(tokenEOF) - return nil -} - -func (l *queryLexer) lexString() queryLexStateFn { - l.pos++ - l.ignore() - growingString := "" - - for { - if l.follow(l.stringTerm) { - l.emitWithValue(tokenString, growingString) - l.pos++ - l.ignore() - return l.lexVoid - } - - if l.follow("\\\"") { - l.pos++ - growingString += "\"" - } else if l.follow("\\'") { - l.pos++ - growingString += "'" - } else if l.follow("\\n") { - l.pos++ - growingString += "\n" - } else if l.follow("\\b") { - l.pos++ - growingString += "\b" - } else if l.follow("\\f") { - l.pos++ - growingString += "\f" - } else if l.follow("\\/") { - l.pos++ - growingString += "/" - } else if l.follow("\\t") { - l.pos++ - growingString += "\t" - } else if l.follow("\\r") { - l.pos++ - growingString += "\r" - } else if l.follow("\\\\") { - l.pos++ - growingString += "\\" - } else if l.follow("\\u") { - l.pos += 2 - code := "" - for i := 0; i < 4; i++ { - c := l.peek() - l.pos++ - if !isHexDigit(c) { - return l.errorf("unfinished unicode escape") - } - code = code + string(c) - } - l.pos-- - intcode, err := strconv.ParseInt(code, 16, 32) - if err != nil { - return l.errorf("invalid unicode escape: \\u" + code) - } - growingString += string(rune(intcode)) - } else if l.follow("\\U") { - l.pos += 2 - code := "" - for i := 0; i < 8; i++ { - c := l.peek() - l.pos++ - if !isHexDigit(c) { - return l.errorf("unfinished unicode escape") - } - code = code + string(c) - } - l.pos-- - intcode, err := strconv.ParseInt(code, 16, 32) - if err != nil { - return l.errorf("invalid unicode escape: \\u" + code) - } - growingString += string(rune(intcode)) - } else if l.follow("\\") { - l.pos++ - return l.errorf("invalid escape sequence: \\" + string(l.peek())) - } else { - growingString += string(l.peek()) - } - - if l.next() == eof { - break - } - } - - return l.errorf("unclosed string") -} - -func (l *queryLexer) lexNumber() queryLexStateFn { - l.ignore() - if !l.accept("+") { - l.accept("-") - } - pointSeen := false - digitSeen := false - for { - next := l.next() - if next == '.' { - if pointSeen { - return l.errorf("cannot have two dots in one float") - } - if !isDigit(l.peek()) { - return l.errorf("float cannot end with a dot") - } - pointSeen = true - } else if isDigit(next) { - digitSeen = true - } else { - l.backup() - break - } - if pointSeen && !digitSeen { - return l.errorf("cannot start float with a dot") - } - } - - if !digitSeen { - return l.errorf("no digit in that number") - } - if pointSeen { - l.emit(tokenFloat) - } else { - l.emit(tokenInteger) - } - return l.lexVoid -} - -// Entry point -func lexQuery(input string) chan token { - l := &queryLexer{ - input: input, - tokens: make(chan token), - line: 1, - col: 1, - } - go l.run() - return l.tokens -} diff --git a/vendor/github.com/pelletier/go-toml/query/match.go b/vendor/github.com/pelletier/go-toml/query/match.go deleted file mode 100644 index d7bb15a4..00000000 --- a/vendor/github.com/pelletier/go-toml/query/match.go +++ /dev/null @@ -1,232 +0,0 @@ -package query - -import ( - "fmt" - "github.com/pelletier/go-toml" -) - -// base match -type matchBase struct { - next pathFn -} - -func (f *matchBase) setNext(next pathFn) { - f.next = next -} - -// terminating functor - gathers results -type terminatingFn struct { - // empty -} - -func newTerminatingFn() *terminatingFn { - return &terminatingFn{} -} - -func (f *terminatingFn) setNext(next pathFn) { - // do nothing -} - -func (f *terminatingFn) call(node interface{}, ctx *queryContext) { - ctx.result.appendResult(node, ctx.lastPosition) -} - -// match single key -type matchKeyFn struct { - matchBase - Name string -} - -func newMatchKeyFn(name string) *matchKeyFn { - return &matchKeyFn{Name: name} -} - -func (f *matchKeyFn) call(node interface{}, ctx *queryContext) { - if array, ok := node.([]*toml.Tree); ok { - for _, tree := range array { - item := tree.Get(f.Name) - if item != nil { - ctx.lastPosition = tree.GetPosition(f.Name) - f.next.call(item, ctx) - } - } - } else if tree, ok := node.(*toml.Tree); ok { - item := tree.Get(f.Name) - if item != nil { - ctx.lastPosition = tree.GetPosition(f.Name) - f.next.call(item, ctx) - } - } -} - -// match single index -type matchIndexFn struct { - matchBase - Idx int -} - -func newMatchIndexFn(idx int) *matchIndexFn { - return &matchIndexFn{Idx: idx} -} - -func (f *matchIndexFn) call(node interface{}, ctx *queryContext) { - if arr, ok := node.([]interface{}); ok { - if f.Idx < len(arr) && f.Idx >= 0 { - if treesArray, ok := node.([]*toml.Tree); ok { - if len(treesArray) > 0 { - ctx.lastPosition = treesArray[0].Position() - } - } - f.next.call(arr[f.Idx], ctx) - } - } -} - -// filter by slicing -type matchSliceFn struct { - matchBase - Start, End, Step int -} - -func newMatchSliceFn(start, end, step int) *matchSliceFn { - return &matchSliceFn{Start: start, End: end, Step: step} -} - -func (f *matchSliceFn) call(node interface{}, ctx *queryContext) { - if arr, ok := node.([]interface{}); ok { - // adjust indexes for negative values, reverse ordering - realStart, realEnd := f.Start, f.End - if realStart < 0 { - realStart = len(arr) + realStart - } - if realEnd < 0 { - realEnd = len(arr) + realEnd - } - if realEnd < realStart { - realEnd, realStart = realStart, realEnd // swap - } - // loop and gather - for idx := realStart; idx < realEnd; idx += f.Step { - if treesArray, ok := node.([]*toml.Tree); ok { - if len(treesArray) > 0 { - ctx.lastPosition = treesArray[0].Position() - } - } - f.next.call(arr[idx], ctx) - } - } -} - -// match anything -type matchAnyFn struct { - matchBase -} - -func newMatchAnyFn() *matchAnyFn { - return &matchAnyFn{} -} - -func (f *matchAnyFn) call(node interface{}, ctx *queryContext) { - if tree, ok := node.(*toml.Tree); ok { - for _, k := range tree.Keys() { - v := tree.Get(k) - ctx.lastPosition = tree.GetPosition(k) - f.next.call(v, ctx) - } - } -} - -// filter through union -type matchUnionFn struct { - Union []pathFn -} - -func (f *matchUnionFn) setNext(next pathFn) { - for _, fn := range f.Union { - fn.setNext(next) - } -} - -func (f *matchUnionFn) call(node interface{}, ctx *queryContext) { - for _, fn := range f.Union { - fn.call(node, ctx) - } -} - -// match every single last node in the tree -type matchRecursiveFn struct { - matchBase -} - -func newMatchRecursiveFn() *matchRecursiveFn { - return &matchRecursiveFn{} -} - -func (f *matchRecursiveFn) call(node interface{}, ctx *queryContext) { - originalPosition := ctx.lastPosition - if tree, ok := node.(*toml.Tree); ok { - var visit func(tree *toml.Tree) - visit = func(tree *toml.Tree) { - for _, k := range tree.Keys() { - v := tree.Get(k) - ctx.lastPosition = tree.GetPosition(k) - f.next.call(v, ctx) - switch node := v.(type) { - case *toml.Tree: - visit(node) - case []*toml.Tree: - for _, subtree := range node { - visit(subtree) - } - } - } - } - ctx.lastPosition = originalPosition - f.next.call(tree, ctx) - visit(tree) - } -} - -// match based on an externally provided functional filter -type matchFilterFn struct { - matchBase - Pos toml.Position - Name string -} - -func newMatchFilterFn(name string, pos toml.Position) *matchFilterFn { - return &matchFilterFn{Name: name, Pos: pos} -} - -func (f *matchFilterFn) call(node interface{}, ctx *queryContext) { - fn, ok := (*ctx.filters)[f.Name] - if !ok { - panic(fmt.Sprintf("%s: query context does not have filter '%s'", - f.Pos.String(), f.Name)) - } - switch castNode := node.(type) { - case *toml.Tree: - for _, k := range castNode.Keys() { - v := castNode.Get(k) - if fn(v) { - ctx.lastPosition = castNode.GetPosition(k) - f.next.call(v, ctx) - } - } - case []*toml.Tree: - for _, v := range castNode { - if fn(v) { - if len(castNode) > 0 { - ctx.lastPosition = castNode[0].Position() - } - f.next.call(v, ctx) - } - } - case []interface{}: - for _, v := range castNode { - if fn(v) { - f.next.call(v, ctx) - } - } - } -} diff --git a/vendor/github.com/pelletier/go-toml/query/parser.go b/vendor/github.com/pelletier/go-toml/query/parser.go deleted file mode 100644 index 5f69b70d..00000000 --- a/vendor/github.com/pelletier/go-toml/query/parser.go +++ /dev/null @@ -1,275 +0,0 @@ -/* - Based on the "jsonpath" spec/concept. - - http://goessner.net/articles/JsonPath/ - https://code.google.com/p/json-path/ -*/ - -package query - -import ( - "fmt" -) - -const maxInt = int(^uint(0) >> 1) - -type queryParser struct { - flow chan token - tokensBuffer []token - query *Query - union []pathFn - err error -} - -type queryParserStateFn func() queryParserStateFn - -// Formats and panics an error message based on a token -func (p *queryParser) parseError(tok *token, msg string, args ...interface{}) queryParserStateFn { - p.err = fmt.Errorf(tok.Position.String()+": "+msg, args...) - return nil // trigger parse to end -} - -func (p *queryParser) run() { - for state := p.parseStart; state != nil; { - state = state() - } -} - -func (p *queryParser) backup(tok *token) { - p.tokensBuffer = append(p.tokensBuffer, *tok) -} - -func (p *queryParser) peek() *token { - if len(p.tokensBuffer) != 0 { - return &(p.tokensBuffer[0]) - } - - tok, ok := <-p.flow - if !ok { - return nil - } - p.backup(&tok) - return &tok -} - -func (p *queryParser) lookahead(types ...tokenType) bool { - result := true - buffer := []token{} - - for _, typ := range types { - tok := p.getToken() - if tok == nil { - result = false - break - } - buffer = append(buffer, *tok) - if tok.typ != typ { - result = false - break - } - } - // add the tokens back to the buffer, and return - p.tokensBuffer = append(p.tokensBuffer, buffer...) - return result -} - -func (p *queryParser) getToken() *token { - if len(p.tokensBuffer) != 0 { - tok := p.tokensBuffer[0] - p.tokensBuffer = p.tokensBuffer[1:] - return &tok - } - tok, ok := <-p.flow - if !ok { - return nil - } - return &tok -} - -func (p *queryParser) parseStart() queryParserStateFn { - tok := p.getToken() - - if tok == nil || tok.typ == tokenEOF { - return nil - } - - if tok.typ != tokenDollar { - return p.parseError(tok, "Expected '$' at start of expression") - } - - return p.parseMatchExpr -} - -// handle '.' prefix, '[]', and '..' -func (p *queryParser) parseMatchExpr() queryParserStateFn { - tok := p.getToken() - switch tok.typ { - case tokenDotDot: - p.query.appendPath(&matchRecursiveFn{}) - // nested parse for '..' - tok := p.getToken() - switch tok.typ { - case tokenKey: - p.query.appendPath(newMatchKeyFn(tok.val)) - return p.parseMatchExpr - case tokenLeftBracket: - return p.parseBracketExpr - case tokenStar: - // do nothing - the recursive predicate is enough - return p.parseMatchExpr - } - - case tokenDot: - // nested parse for '.' - tok := p.getToken() - switch tok.typ { - case tokenKey: - p.query.appendPath(newMatchKeyFn(tok.val)) - return p.parseMatchExpr - case tokenStar: - p.query.appendPath(&matchAnyFn{}) - return p.parseMatchExpr - } - - case tokenLeftBracket: - return p.parseBracketExpr - - case tokenEOF: - return nil // allow EOF at this stage - } - return p.parseError(tok, "expected match expression") -} - -func (p *queryParser) parseBracketExpr() queryParserStateFn { - if p.lookahead(tokenInteger, tokenColon) { - return p.parseSliceExpr - } - if p.peek().typ == tokenColon { - return p.parseSliceExpr - } - return p.parseUnionExpr -} - -func (p *queryParser) parseUnionExpr() queryParserStateFn { - var tok *token - - // this state can be traversed after some sub-expressions - // so be careful when setting up state in the parser - if p.union == nil { - p.union = []pathFn{} - } - -loop: // labeled loop for easy breaking - for { - if len(p.union) > 0 { - // parse delimiter or terminator - tok = p.getToken() - switch tok.typ { - case tokenComma: - // do nothing - case tokenRightBracket: - break loop - default: - return p.parseError(tok, "expected ',' or ']', not '%s'", tok.val) - } - } - - // parse sub expression - tok = p.getToken() - switch tok.typ { - case tokenInteger: - p.union = append(p.union, newMatchIndexFn(tok.Int())) - case tokenKey: - p.union = append(p.union, newMatchKeyFn(tok.val)) - case tokenString: - p.union = append(p.union, newMatchKeyFn(tok.val)) - case tokenQuestion: - return p.parseFilterExpr - default: - return p.parseError(tok, "expected union sub expression, not '%s', %d", tok.val, len(p.union)) - } - } - - // if there is only one sub-expression, use that instead - if len(p.union) == 1 { - p.query.appendPath(p.union[0]) - } else { - p.query.appendPath(&matchUnionFn{p.union}) - } - - p.union = nil // clear out state - return p.parseMatchExpr -} - -func (p *queryParser) parseSliceExpr() queryParserStateFn { - // init slice to grab all elements - start, end, step := 0, maxInt, 1 - - // parse optional start - tok := p.getToken() - if tok.typ == tokenInteger { - start = tok.Int() - tok = p.getToken() - } - if tok.typ != tokenColon { - return p.parseError(tok, "expected ':'") - } - - // parse optional end - tok = p.getToken() - if tok.typ == tokenInteger { - end = tok.Int() - tok = p.getToken() - } - if tok.typ == tokenRightBracket { - p.query.appendPath(newMatchSliceFn(start, end, step)) - return p.parseMatchExpr - } - if tok.typ != tokenColon { - return p.parseError(tok, "expected ']' or ':'") - } - - // parse optional step - tok = p.getToken() - if tok.typ == tokenInteger { - step = tok.Int() - if step < 0 { - return p.parseError(tok, "step must be a positive value") - } - tok = p.getToken() - } - if tok.typ != tokenRightBracket { - return p.parseError(tok, "expected ']'") - } - - p.query.appendPath(newMatchSliceFn(start, end, step)) - return p.parseMatchExpr -} - -func (p *queryParser) parseFilterExpr() queryParserStateFn { - tok := p.getToken() - if tok.typ != tokenLeftParen { - return p.parseError(tok, "expected left-parenthesis for filter expression") - } - tok = p.getToken() - if tok.typ != tokenKey && tok.typ != tokenString { - return p.parseError(tok, "expected key or string for filter function name") - } - name := tok.val - tok = p.getToken() - if tok.typ != tokenRightParen { - return p.parseError(tok, "expected right-parenthesis for filter expression") - } - p.union = append(p.union, newMatchFilterFn(name, tok.Position)) - return p.parseUnionExpr -} - -func parseQuery(flow chan token) (*Query, error) { - parser := &queryParser{ - flow: flow, - tokensBuffer: []token{}, - query: newQuery(), - } - parser.run() - return parser.query, parser.err -} diff --git a/vendor/github.com/pelletier/go-toml/query/query.go b/vendor/github.com/pelletier/go-toml/query/query.go deleted file mode 100644 index 1c6cd801..00000000 --- a/vendor/github.com/pelletier/go-toml/query/query.go +++ /dev/null @@ -1,158 +0,0 @@ -package query - -import ( - "time" - - "github.com/pelletier/go-toml" -) - -// NodeFilterFn represents a user-defined filter function, for use with -// Query.SetFilter(). -// -// The return value of the function must indicate if 'node' is to be included -// at this stage of the TOML path. Returning true will include the node, and -// returning false will exclude it. -// -// NOTE: Care should be taken to write script callbacks such that they are safe -// to use from multiple goroutines. -type NodeFilterFn func(node interface{}) bool - -// Result is the result of Executing a Query. -type Result struct { - items []interface{} - positions []toml.Position -} - -// appends a value/position pair to the result set. -func (r *Result) appendResult(node interface{}, pos toml.Position) { - r.items = append(r.items, node) - r.positions = append(r.positions, pos) -} - -// Values is a set of values within a Result. The order of values is not -// guaranteed to be in document order, and may be different each time a query is -// executed. -func (r Result) Values() []interface{} { - return r.items -} - -// Positions is a set of positions for values within a Result. Each index -// in Positions() corresponds to the entry in Value() of the same index. -func (r Result) Positions() []toml.Position { - return r.positions -} - -// runtime context for executing query paths -type queryContext struct { - result *Result - filters *map[string]NodeFilterFn - lastPosition toml.Position -} - -// generic path functor interface -type pathFn interface { - setNext(next pathFn) - // it is the caller's responsibility to set the ctx.lastPosition before invoking call() - // node can be one of: *toml.Tree, []*toml.Tree, or a scalar - call(node interface{}, ctx *queryContext) -} - -// A Query is the representation of a compiled TOML path. A Query is safe -// for concurrent use by multiple goroutines. -type Query struct { - root pathFn - tail pathFn - filters *map[string]NodeFilterFn -} - -func newQuery() *Query { - return &Query{ - root: nil, - tail: nil, - filters: &defaultFilterFunctions, - } -} - -func (q *Query) appendPath(next pathFn) { - if q.root == nil { - q.root = next - } else { - q.tail.setNext(next) - } - q.tail = next - next.setNext(newTerminatingFn()) // init the next functor -} - -// Compile compiles a TOML path expression. The returned Query can be used -// to match elements within a Tree and its descendants. See Execute. -func Compile(path string) (*Query, error) { - return parseQuery(lexQuery(path)) -} - -// Execute executes a query against a Tree, and returns the result of the query. -func (q *Query) Execute(tree *toml.Tree) *Result { - result := &Result{ - items: []interface{}{}, - positions: []toml.Position{}, - } - if q.root == nil { - result.appendResult(tree, tree.GetPosition("")) - } else { - ctx := &queryContext{ - result: result, - filters: q.filters, - } - ctx.lastPosition = tree.Position() - q.root.call(tree, ctx) - } - return result -} - -// CompileAndExecute is a shorthand for Compile(path) followed by Execute(tree). -func CompileAndExecute(path string, tree *toml.Tree) (*Result, error) { - query, err := Compile(path) - if err != nil { - return nil, err - } - return query.Execute(tree), nil -} - -// SetFilter sets a user-defined filter function. These may be used inside -// "?(..)" query expressions to filter TOML document elements within a query. -func (q *Query) SetFilter(name string, fn NodeFilterFn) { - if q.filters == &defaultFilterFunctions { - // clone the static table - q.filters = &map[string]NodeFilterFn{} - for k, v := range defaultFilterFunctions { - (*q.filters)[k] = v - } - } - (*q.filters)[name] = fn -} - -var defaultFilterFunctions = map[string]NodeFilterFn{ - "tree": func(node interface{}) bool { - _, ok := node.(*toml.Tree) - return ok - }, - "int": func(node interface{}) bool { - _, ok := node.(int64) - return ok - }, - "float": func(node interface{}) bool { - _, ok := node.(float64) - return ok - }, - "string": func(node interface{}) bool { - _, ok := node.(string) - return ok - }, - "time": func(node interface{}) bool { - _, ok := node.(time.Time) - return ok - }, - "bool": func(node interface{}) bool { - _, ok := node.(bool) - return ok - }, -} diff --git a/vendor/github.com/pelletier/go-toml/query/tokens.go b/vendor/github.com/pelletier/go-toml/query/tokens.go deleted file mode 100644 index 9ae579de..00000000 --- a/vendor/github.com/pelletier/go-toml/query/tokens.go +++ /dev/null @@ -1,106 +0,0 @@ -package query - -import ( - "fmt" - "github.com/pelletier/go-toml" - "strconv" - "unicode" -) - -// Define tokens -type tokenType int - -const ( - eof = -(iota + 1) -) - -const ( - tokenError tokenType = iota - tokenEOF - tokenKey - tokenString - tokenInteger - tokenFloat - tokenLeftBracket - tokenRightBracket - tokenLeftParen - tokenRightParen - tokenComma - tokenColon - tokenDollar - tokenStar - tokenQuestion - tokenDot - tokenDotDot -) - -var tokenTypeNames = []string{ - "Error", - "EOF", - "Key", - "String", - "Integer", - "Float", - "[", - "]", - "(", - ")", - ",", - ":", - "$", - "*", - "?", - ".", - "..", -} - -type token struct { - toml.Position - typ tokenType - val string -} - -func (tt tokenType) String() string { - idx := int(tt) - if idx < len(tokenTypeNames) { - return tokenTypeNames[idx] - } - return "Unknown" -} - -func (t token) Int() int { - if result, err := strconv.Atoi(t.val); err != nil { - panic(err) - } else { - return result - } -} - -func (t token) String() string { - switch t.typ { - case tokenEOF: - return "EOF" - case tokenError: - return t.val - } - - return fmt.Sprintf("%q", t.val) -} - -func isSpace(r rune) bool { - return r == ' ' || r == '\t' -} - -func isAlphanumeric(r rune) bool { - return unicode.IsLetter(r) || r == '_' -} - -func isDigit(r rune) bool { - return unicode.IsNumber(r) -} - -func isHexDigit(r rune) bool { - return isDigit(r) || - (r >= 'a' && r <= 'f') || - (r >= 'A' && r <= 'F') -} |