diff options
Diffstat (limited to 'vendor/github.com/hashicorp/hcl/hcl')
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/ast/ast.go | 219 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/ast/walk.go | 52 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/parser/error.go | 17 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/parser/parser.go | 532 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/printer/nodes.go | 789 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/printer/printer.go | 66 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/scanner/scanner.go | 652 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/strconv/quote.go | 241 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/token/position.go | 46 | ||||
| -rw-r--r-- | vendor/github.com/hashicorp/hcl/hcl/token/token.go | 219 |
10 files changed, 0 insertions, 2833 deletions
diff --git a/vendor/github.com/hashicorp/hcl/hcl/ast/ast.go b/vendor/github.com/hashicorp/hcl/hcl/ast/ast.go deleted file mode 100644 index 6e5ef65..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/ast/ast.go +++ /dev/null @@ -1,219 +0,0 @@ -// Package ast declares the types used to represent syntax trees for HCL -// (HashiCorp Configuration Language) -package ast - -import ( - "fmt" - "strings" - - "github.com/hashicorp/hcl/hcl/token" -) - -// Node is an element in the abstract syntax tree. -type Node interface { - node() - Pos() token.Pos -} - -func (File) node() {} -func (ObjectList) node() {} -func (ObjectKey) node() {} -func (ObjectItem) node() {} -func (Comment) node() {} -func (CommentGroup) node() {} -func (ObjectType) node() {} -func (LiteralType) node() {} -func (ListType) node() {} - -// File represents a single HCL file -type File struct { - Node Node // usually a *ObjectList - Comments []*CommentGroup // list of all comments in the source -} - -func (f *File) Pos() token.Pos { - return f.Node.Pos() -} - -// ObjectList represents a list of ObjectItems. An HCL file itself is an -// ObjectList. -type ObjectList struct { - Items []*ObjectItem -} - -func (o *ObjectList) Add(item *ObjectItem) { - o.Items = append(o.Items, item) -} - -// Filter filters out the objects with the given key list as a prefix. -// -// The returned list of objects contain ObjectItems where the keys have -// this prefix already stripped off. This might result in objects with -// zero-length key lists if they have no children. -// -// If no matches are found, an empty ObjectList (non-nil) is returned. -func (o *ObjectList) Filter(keys ...string) *ObjectList { - var result ObjectList - for _, item := range o.Items { - // If there aren't enough keys, then ignore this - if len(item.Keys) < len(keys) { - continue - } - - match := true - for i, key := range item.Keys[:len(keys)] { - key := key.Token.Value().(string) - if key != keys[i] && !strings.EqualFold(key, keys[i]) { - match = false - break - } - } - if !match { - continue - } - - // Strip off the prefix from the children - newItem := *item - newItem.Keys = newItem.Keys[len(keys):] - result.Add(&newItem) - } - - return &result -} - -// Children returns further nested objects (key length > 0) within this -// ObjectList. This should be used with Filter to get at child items. -func (o *ObjectList) Children() *ObjectList { - var result ObjectList - for _, item := range o.Items { - if len(item.Keys) > 0 { - result.Add(item) - } - } - - return &result -} - -// Elem returns items in the list that are direct element assignments -// (key length == 0). This should be used with Filter to get at elements. -func (o *ObjectList) Elem() *ObjectList { - var result ObjectList - for _, item := range o.Items { - if len(item.Keys) == 0 { - result.Add(item) - } - } - - return &result -} - -func (o *ObjectList) Pos() token.Pos { - // always returns the uninitiliazed position - return o.Items[0].Pos() -} - -// ObjectItem represents a HCL Object Item. An item is represented with a key -// (or keys). It can be an assignment or an object (both normal and nested) -type ObjectItem struct { - // keys is only one length long if it's of type assignment. If it's a - // nested object it can be larger than one. In that case "assign" is - // invalid as there is no assignments for a nested object. - Keys []*ObjectKey - - // assign contains the position of "=", if any - Assign token.Pos - - // val is the item itself. It can be an object,list, number, bool or a - // string. If key length is larger than one, val can be only of type - // Object. - Val Node - - LeadComment *CommentGroup // associated lead comment - LineComment *CommentGroup // associated line comment -} - -func (o *ObjectItem) Pos() token.Pos { - // I'm not entirely sure what causes this, but removing this causes - // a test failure. We should investigate at some point. - if len(o.Keys) == 0 { - return token.Pos{} - } - - return o.Keys[0].Pos() -} - -// ObjectKeys are either an identifier or of type string. -type ObjectKey struct { - Token token.Token -} - -func (o *ObjectKey) Pos() token.Pos { - return o.Token.Pos -} - -// LiteralType represents a literal of basic type. Valid types are: -// token.NUMBER, token.FLOAT, token.BOOL and token.STRING -type LiteralType struct { - Token token.Token - - // comment types, only used when in a list - LeadComment *CommentGroup - LineComment *CommentGroup -} - -func (l *LiteralType) Pos() token.Pos { - return l.Token.Pos -} - -// ListStatement represents a HCL List type -type ListType struct { - Lbrack token.Pos // position of "[" - Rbrack token.Pos // position of "]" - List []Node // the elements in lexical order -} - -func (l *ListType) Pos() token.Pos { - return l.Lbrack -} - -func (l *ListType) Add(node Node) { - l.List = append(l.List, node) -} - -// ObjectType represents a HCL Object Type -type ObjectType struct { - Lbrace token.Pos // position of "{" - Rbrace token.Pos // position of "}" - List *ObjectList // the nodes in lexical order -} - -func (o *ObjectType) Pos() token.Pos { - return o.Lbrace -} - -// Comment node represents a single //, # style or /*- style commment -type Comment struct { - Start token.Pos // position of / or # - Text string -} - -func (c *Comment) Pos() token.Pos { - return c.Start -} - -// CommentGroup node represents a sequence of comments with no other tokens and -// no empty lines between. -type CommentGroup struct { - List []*Comment // len(List) > 0 -} - -func (c *CommentGroup) Pos() token.Pos { - return c.List[0].Pos() -} - -//------------------------------------------------------------------- -// GoStringer -//------------------------------------------------------------------- - -func (o *ObjectKey) GoString() string { return fmt.Sprintf("*%#v", *o) } -func (o *ObjectList) GoString() string { return fmt.Sprintf("*%#v", *o) } diff --git a/vendor/github.com/hashicorp/hcl/hcl/ast/walk.go b/vendor/github.com/hashicorp/hcl/hcl/ast/walk.go deleted file mode 100644 index ba07ad4..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/ast/walk.go +++ /dev/null @@ -1,52 +0,0 @@ -package ast - -import "fmt" - -// WalkFunc describes a function to be called for each node during a Walk. The -// returned node can be used to rewrite the AST. Walking stops the returned -// bool is false. -type WalkFunc func(Node) (Node, bool) - -// Walk traverses an AST in depth-first order: It starts by calling fn(node); -// node must not be nil. If fn returns true, Walk invokes fn recursively for -// each of the non-nil children of node, followed by a call of fn(nil). The -// returned node of fn can be used to rewrite the passed node to fn. -func Walk(node Node, fn WalkFunc) Node { - rewritten, ok := fn(node) - if !ok { - return rewritten - } - - switch n := node.(type) { - case *File: - n.Node = Walk(n.Node, fn) - case *ObjectList: - for i, item := range n.Items { - n.Items[i] = Walk(item, fn).(*ObjectItem) - } - case *ObjectKey: - // nothing to do - case *ObjectItem: - for i, k := range n.Keys { - n.Keys[i] = Walk(k, fn).(*ObjectKey) - } - - if n.Val != nil { - n.Val = Walk(n.Val, fn) - } - case *LiteralType: - // nothing to do - case *ListType: - for i, l := range n.List { - n.List[i] = Walk(l, fn) - } - case *ObjectType: - n.List = Walk(n.List, fn).(*ObjectList) - default: - // should we panic here? - fmt.Printf("unknown type: %T\n", n) - } - - fn(nil) - return rewritten -} diff --git a/vendor/github.com/hashicorp/hcl/hcl/parser/error.go b/vendor/github.com/hashicorp/hcl/hcl/parser/error.go deleted file mode 100644 index 5c99381..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/parser/error.go +++ /dev/null @@ -1,17 +0,0 @@ -package parser - -import ( - "fmt" - - "github.com/hashicorp/hcl/hcl/token" -) - -// PosError is a parse error that contains a position. -type PosError struct { - Pos token.Pos - Err error -} - -func (e *PosError) Error() string { - return fmt.Sprintf("At %s: %s", e.Pos, e.Err) -} diff --git a/vendor/github.com/hashicorp/hcl/hcl/parser/parser.go b/vendor/github.com/hashicorp/hcl/hcl/parser/parser.go deleted file mode 100644 index 64c83bc..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/parser/parser.go +++ /dev/null @@ -1,532 +0,0 @@ -// Package parser implements a parser for HCL (HashiCorp Configuration -// Language) -package parser - -import ( - "bytes" - "errors" - "fmt" - "strings" - - "github.com/hashicorp/hcl/hcl/ast" - "github.com/hashicorp/hcl/hcl/scanner" - "github.com/hashicorp/hcl/hcl/token" -) - -type Parser struct { - sc *scanner.Scanner - - // Last read token - tok token.Token - commaPrev token.Token - - comments []*ast.CommentGroup - leadComment *ast.CommentGroup // last lead comment - lineComment *ast.CommentGroup // last line comment - - enableTrace bool - indent int - n int // buffer size (max = 1) -} - -func newParser(src []byte) *Parser { - return &Parser{ - sc: scanner.New(src), - } -} - -// Parse returns the fully parsed source and returns the abstract syntax tree. -func Parse(src []byte) (*ast.File, error) { - // normalize all line endings - // since the scanner and output only work with "\n" line endings, we may - // end up with dangling "\r" characters in the parsed data. - src = bytes.Replace(src, []byte("\r\n"), []byte("\n"), -1) - - p := newParser(src) - return p.Parse() -} - -var errEofToken = errors.New("EOF token found") - -// Parse returns the fully parsed source and returns the abstract syntax tree. -func (p *Parser) Parse() (*ast.File, error) { - f := &ast.File{} - var err, scerr error - p.sc.Error = func(pos token.Pos, msg string) { - scerr = &PosError{Pos: pos, Err: errors.New(msg)} - } - - f.Node, err = p.objectList(false) - if scerr != nil { - return nil, scerr - } - if err != nil { - return nil, err - } - - f.Comments = p.comments - return f, nil -} - -// objectList parses a list of items within an object (generally k/v pairs). -// The parameter" obj" tells this whether to we are within an object (braces: -// '{', '}') or just at the top level. If we're within an object, we end -// at an RBRACE. -func (p *Parser) objectList(obj bool) (*ast.ObjectList, error) { - defer un(trace(p, "ParseObjectList")) - node := &ast.ObjectList{} - - for { - if obj { - tok := p.scan() - p.unscan() - if tok.Type == token.RBRACE { - break - } - } - - n, err := p.objectItem() - if err == errEofToken { - break // we are finished - } - - // we don't return a nil node, because might want to use already - // collected items. - if err != nil { - return node, err - } - - node.Add(n) - - // object lists can be optionally comma-delimited e.g. when a list of maps - // is being expressed, so a comma is allowed here - it's simply consumed - tok := p.scan() - if tok.Type != token.COMMA { - p.unscan() - } - } - return node, nil -} - -func (p *Parser) consumeComment() (comment *ast.Comment, endline int) { - endline = p.tok.Pos.Line - - // count the endline if it's multiline comment, ie starting with /* - if len(p.tok.Text) > 1 && p.tok.Text[1] == '*' { - // don't use range here - no need to decode Unicode code points - for i := 0; i < len(p.tok.Text); i++ { - if p.tok.Text[i] == '\n' { - endline++ - } - } - } - - comment = &ast.Comment{Start: p.tok.Pos, Text: p.tok.Text} - p.tok = p.sc.Scan() - return -} - -func (p *Parser) consumeCommentGroup(n int) (comments *ast.CommentGroup, endline int) { - var list []*ast.Comment - endline = p.tok.Pos.Line - - for p.tok.Type == token.COMMENT && p.tok.Pos.Line <= endline+n { - var comment *ast.Comment - comment, endline = p.consumeComment() - list = append(list, comment) - } - - // add comment group to the comments list - comments = &ast.CommentGroup{List: list} - p.comments = append(p.comments, comments) - - return -} - -// objectItem parses a single object item -func (p *Parser) objectItem() (*ast.ObjectItem, error) { - defer un(trace(p, "ParseObjectItem")) - - keys, err := p.objectKey() - if len(keys) > 0 && err == errEofToken { - // We ignore eof token here since it is an error if we didn't - // receive a value (but we did receive a key) for the item. - err = nil - } - if len(keys) > 0 && err != nil && p.tok.Type == token.RBRACE { - // This is a strange boolean statement, but what it means is: - // We have keys with no value, and we're likely in an object - // (since RBrace ends an object). For this, we set err to nil so - // we continue and get the error below of having the wrong value - // type. - err = nil - - // Reset the token type so we don't think it completed fine. See - // objectType which uses p.tok.Type to check if we're done with - // the object. - p.tok.Type = token.EOF - } - if err != nil { - return nil, err - } - - o := &ast.ObjectItem{ - Keys: keys, - } - - if p.leadComment != nil { - o.LeadComment = p.leadComment - p.leadComment = nil - } - - switch p.tok.Type { - case token.ASSIGN: - o.Assign = p.tok.Pos - o.Val, err = p.object() - if err != nil { - return nil, err - } - case token.LBRACE: - o.Val, err = p.objectType() - if err != nil { - return nil, err - } - default: - keyStr := make([]string, 0, len(keys)) - for _, k := range keys { - keyStr = append(keyStr, k.Token.Text) - } - - return nil, &PosError{ - Pos: p.tok.Pos, - Err: fmt.Errorf( - "key '%s' expected start of object ('{') or assignment ('=')", - strings.Join(keyStr, " ")), - } - } - - // key=#comment - // val - if p.lineComment != nil { - o.LineComment, p.lineComment = p.lineComment, nil - } - - // do a look-ahead for line comment - p.scan() - if len(keys) > 0 && o.Val.Pos().Line == keys[0].Pos().Line && p.lineComment != nil { - o.LineComment = p.lineComment - p.lineComment = nil - } - p.unscan() - return o, nil -} - -// objectKey parses an object key and returns a ObjectKey AST -func (p *Parser) objectKey() ([]*ast.ObjectKey, error) { - keyCount := 0 - keys := make([]*ast.ObjectKey, 0) - - for { - tok := p.scan() - switch tok.Type { - case token.EOF: - // It is very important to also return the keys here as well as - // the error. This is because we need to be able to tell if we - // did parse keys prior to finding the EOF, or if we just found - // a bare EOF. - return keys, errEofToken - case token.ASSIGN: - // assignment or object only, but not nested objects. this is not - // allowed: `foo bar = {}` - if keyCount > 1 { - return nil, &PosError{ - Pos: p.tok.Pos, - Err: fmt.Errorf("nested object expected: LBRACE got: %s", p.tok.Type), - } - } - - if keyCount == 0 { - return nil, &PosError{ - Pos: p.tok.Pos, - Err: errors.New("no object keys found!"), - } - } - - return keys, nil - case token.LBRACE: - var err error - - // If we have no keys, then it is a syntax error. i.e. {{}} is not - // allowed. - if len(keys) == 0 { - err = &PosError{ - Pos: p.tok.Pos, - Err: fmt.Errorf("expected: IDENT | STRING got: %s", p.tok.Type), - } - } - - // object - return keys, err - case token.IDENT, token.STRING: - keyCount++ - keys = append(keys, &ast.ObjectKey{Token: p.tok}) - case token.ILLEGAL: - return keys, &PosError{ - Pos: p.tok.Pos, - Err: fmt.Errorf("illegal character"), - } - default: - return keys, &PosError{ - Pos: p.tok.Pos, - Err: fmt.Errorf("expected: IDENT | STRING | ASSIGN | LBRACE got: %s", p.tok.Type), - } - } - } -} - -// object parses any type of object, such as number, bool, string, object or -// list. -func (p *Parser) object() (ast.Node, error) { - defer un(trace(p, "ParseType")) - tok := p.scan() - - switch tok.Type { - case token.NUMBER, token.FLOAT, token.BOOL, token.STRING, token.HEREDOC: - return p.literalType() - case token.LBRACE: - return p.objectType() - case token.LBRACK: - return p.listType() - case token.COMMENT: - // implement comment - case token.EOF: - return nil, errEofToken - } - - return nil, &PosError{ - Pos: tok.Pos, - Err: fmt.Errorf("Unknown token: %+v", tok), - } -} - -// objectType parses an object type and returns a ObjectType AST -func (p *Parser) objectType() (*ast.ObjectType, error) { - defer un(trace(p, "ParseObjectType")) - - // we assume that the currently scanned token is a LBRACE - o := &ast.ObjectType{ - Lbrace: p.tok.Pos, - } - - l, err := p.objectList(true) - - // if we hit RBRACE, we are good to go (means we parsed all Items), if it's - // not a RBRACE, it's an syntax error and we just return it. - if err != nil && p.tok.Type != token.RBRACE { - return nil, err - } - - // No error, scan and expect the ending to be a brace - if tok := p.scan(); tok.Type != token.RBRACE { - return nil, &PosError{ - Pos: tok.Pos, - Err: fmt.Errorf("object expected closing RBRACE got: %s", tok.Type), - } - } - - o.List = l - o.Rbrace = p.tok.Pos // advanced via parseObjectList - return o, nil -} - -// listType parses a list type and returns a ListType AST -func (p *Parser) listType() (*ast.ListType, error) { - defer un(trace(p, "ParseListType")) - - // we assume that the currently scanned token is a LBRACK - l := &ast.ListType{ - Lbrack: p.tok.Pos, - } - - needComma := false - for { - tok := p.scan() - if needComma { - switch tok.Type { - case token.COMMA, token.RBRACK: - default: - return nil, &PosError{ - Pos: tok.Pos, - Err: fmt.Errorf( - "error parsing list, expected comma or list end, got: %s", - tok.Type), - } - } - } - switch tok.Type { - case token.BOOL, token.NUMBER, token.FLOAT, token.STRING, token.HEREDOC: - node, err := p.literalType() - if err != nil { - return nil, err - } - - // If there is a lead comment, apply it - if p.leadComment != nil { - node.LeadComment = p.leadComment - p.leadComment = nil - } - - l.Add(node) - needComma = true - case token.COMMA: - // get next list item or we are at the end - // do a look-ahead for line comment - p.scan() - if p.lineComment != nil && len(l.List) > 0 { - lit, ok := l.List[len(l.List)-1].(*ast.LiteralType) - if ok { - lit.LineComment = p.lineComment - l.List[len(l.List)-1] = lit - p.lineComment = nil - } - } - p.unscan() - - needComma = false - continue - case token.LBRACE: - // Looks like a nested object, so parse it out - node, err := p.objectType() - if err != nil { - return nil, &PosError{ - Pos: tok.Pos, - Err: fmt.Errorf( - "error while trying to parse object within list: %s", err), - } - } - l.Add(node) - needComma = true - case token.LBRACK: - node, err := p.listType() - if err != nil { - return nil, &PosError{ - Pos: tok.Pos, - Err: fmt.Errorf( - "error while trying to parse list within list: %s", err), - } - } - l.Add(node) - case token.RBRACK: - // finished - l.Rbrack = p.tok.Pos - return l, nil - default: - return nil, &PosError{ - Pos: tok.Pos, - Err: fmt.Errorf("unexpected token while parsing list: %s", tok.Type), - } - } - } -} - -// literalType parses a literal type and returns a LiteralType AST -func (p *Parser) literalType() (*ast.LiteralType, error) { - defer un(trace(p, "ParseLiteral")) - - return &ast.LiteralType{ - Token: p.tok, - }, nil -} - -// scan returns the next token from the underlying scanner. If a token has -// been unscanned then read that instead. In the process, it collects any -// comment groups encountered, and remembers the last lead and line comments. -func (p *Parser) scan() token.Token { - // If we have a token on the buffer, then return it. - if p.n != 0 { - p.n = 0 - return p.tok - } - - // Otherwise read the next token from the scanner and Save it to the buffer - // in case we unscan later. - prev := p.tok - p.tok = p.sc.Scan() - - if p.tok.Type == token.COMMENT { - var comment *ast.CommentGroup - var endline int - - // fmt.Printf("p.tok.Pos.Line = %+v prev: %d endline %d \n", - // p.tok.Pos.Line, prev.Pos.Line, endline) - if p.tok.Pos.Line == prev.Pos.Line { - // The comment is on same line as the previous token; it - // cannot be a lead comment but may be a line comment. - comment, endline = p.consumeCommentGroup(0) - if p.tok.Pos.Line != endline { - // The next token is on a different line, thus - // the last comment group is a line comment. - p.lineComment = comment - } - } - - // consume successor comments, if any - endline = -1 - for p.tok.Type == token.COMMENT { - comment, endline = p.consumeCommentGroup(1) - } - - if endline+1 == p.tok.Pos.Line && p.tok.Type != token.RBRACE { - switch p.tok.Type { - case token.RBRACE, token.RBRACK: - // Do not count for these cases - default: - // The next token is following on the line immediately after the - // comment group, thus the last comment group is a lead comment. - p.leadComment = comment - } - } - - } - - return p.tok -} - -// unscan pushes the previously read token back onto the buffer. -func (p *Parser) unscan() { - p.n = 1 -} - -// ---------------------------------------------------------------------------- -// Parsing support - -func (p *Parser) printTrace(a ...interface{}) { - if !p.enableTrace { - return - } - - const dots = ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " - const n = len(dots) - fmt.Printf("%5d:%3d: ", p.tok.Pos.Line, p.tok.Pos.Column) - - i := 2 * p.indent - for i > n { - fmt.Print(dots) - i -= n - } - // i <= n - fmt.Print(dots[0:i]) - fmt.Println(a...) -} - -func trace(p *Parser, msg string) *Parser { - p.printTrace(msg, "(") - p.indent++ - return p -} - -// Usage pattern: defer un(trace(p, "...")) -func un(p *Parser) { - p.indent-- - p.printTrace(")") -} diff --git a/vendor/github.com/hashicorp/hcl/hcl/printer/nodes.go b/vendor/github.com/hashicorp/hcl/hcl/printer/nodes.go deleted file mode 100644 index 7c038d1..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/printer/nodes.go +++ /dev/null @@ -1,789 +0,0 @@ -package printer - -import ( - "bytes" - "fmt" - "sort" - - "github.com/hashicorp/hcl/hcl/ast" - "github.com/hashicorp/hcl/hcl/token" -) - -const ( - blank = byte(' ') - newline = byte('\n') - tab = byte('\t') - infinity = 1 << 30 // offset or line -) - -var ( - unindent = []byte("\uE123") // in the private use space -) - -type printer struct { - cfg Config - prev token.Pos - - comments []*ast.CommentGroup // may be nil, contains all comments - standaloneComments []*ast.CommentGroup // contains all standalone comments (not assigned to any node) - - enableTrace bool - indentTrace int -} - -type ByPosition []*ast.CommentGroup - -func (b ByPosition) Len() int { return len(b) } -func (b ByPosition) Swap(i, j int) { b[i], b[j] = b[j], b[i] } -func (b ByPosition) Less(i, j int) bool { return b[i].Pos().Before(b[j].Pos()) } - -// collectComments comments all standalone comments which are not lead or line -// comment -func (p *printer) collectComments(node ast.Node) { - // first collect all comments. This is already stored in - // ast.File.(comments) - ast.Walk(node, func(nn ast.Node) (ast.Node, bool) { - switch t := nn.(type) { - case *ast.File: - p.comments = t.Comments - return nn, false - } - return nn, true - }) - - standaloneComments := make(map[token.Pos]*ast.CommentGroup, 0) - for _, c := range p.comments { - standaloneComments[c.Pos()] = c - } - - // next remove all lead and line comments from the overall comment map. - // This will give us comments which are standalone, comments which are not - // assigned to any kind of node. - ast.Walk(node, func(nn ast.Node) (ast.Node, bool) { - switch t := nn.(type) { - case *ast.LiteralType: - if t.LeadComment != nil { - for _, comment := range t.LeadComment.List { - if _, ok := standaloneComments[comment.Pos()]; ok { - delete(standaloneComments, comment.Pos()) - } - } - } - - if t.LineComment != nil { - for _, comment := range t.LineComment.List { - if _, ok := standaloneComments[comment.Pos()]; ok { - delete(standaloneComments, comment.Pos()) - } - } - } - case *ast.ObjectItem: - if t.LeadComment != nil { - for _, comment := range t.LeadComment.List { - if _, ok := standaloneComments[comment.Pos()]; ok { - delete(standaloneComments, comment.Pos()) - } - } - } - - if t.LineComment != nil { - for _, comment := range t.LineComment.List { - if _, ok := standaloneComments[comment.Pos()]; ok { - delete(standaloneComments, comment.Pos()) - } - } - } - } - - return nn, true - }) - - for _, c := range standaloneComments { - p.standaloneComments = append(p.standaloneComments, c) - } - - sort.Sort(ByPosition(p.standaloneComments)) -} - -// output prints creates b printable HCL output and returns it. -func (p *printer) output(n interface{}) []byte { - var buf bytes.Buffer - - switch t := n.(type) { - case *ast.File: - // File doesn't trace so we add the tracing here - defer un(trace(p, "File")) - return p.output(t.Node) - case *ast.ObjectList: - defer un(trace(p, "ObjectList")) - - var index int - for { - // Determine the location of the next actual non-comment - // item. If we're at the end, the next item is at "infinity" - var nextItem token.Pos - if index != len(t.Items) { - nextItem = t.Items[index].Pos() - } else { - nextItem = token.Pos{Offset: infinity, Line: infinity} - } - - // Go through the standalone comments in the file and print out - // the comments that we should be for this object item. - for _, c := range p.standaloneComments { - // Go through all the comments in the group. The group - // should be printed together, not separated by double newlines. - printed := false - newlinePrinted := false - for _, comment := range c.List { - // We only care about comments after the previous item - // we've printed so that comments are printed in the - // correct locations (between two objects for example). - // And before the next item. - if comment.Pos().After(p.prev) && comment.Pos().Before(nextItem) { - // if we hit the end add newlines so we can print the comment - // we don't do this if prev is invalid which means the - // beginning of the file since the first comment should - // be at the first line. - if !newlinePrinted && p.prev.IsValid() && index == len(t.Items) { - buf.Write([]byte{newline, newline}) - newlinePrinted = true - } - - // Write the actual comment. - buf.WriteString(comment.Text) - buf.WriteByte(newline) - - // Set printed to true to note that we printed something - printed = true - } - } - - // If we're not at the last item, write a new line so - // that there is a newline separating this comment from - // the next object. - if printed && index != len(t.Items) { - buf.WriteByte(newline) - } - } - - if index == len(t.Items) { - break - } - - buf.Write(p.output(t.Items[index])) - if index != len(t.Items)-1 { - // Always write a newline to separate us from the next item - buf.WriteByte(newline) - - // Need to determine if we're going to separate the next item - // with a blank line. The logic here is simple, though there - // are a few conditions: - // - // 1. The next object is more than one line away anyways, - // so we need an empty line. - // - // 2. The next object is not a "single line" object, so - // we need an empty line. - // - // 3. This current object is not a single line object, - // so we need an empty line. - current := t.Items[index] - next := t.Items[index+1] - if next.Pos().Line != t.Items[index].Pos().Line+1 || - !p.isSingleLineObject(next) || - !p.isSingleLineObject(current) { - buf.WriteByte(newline) - } - } - index++ - } - case *ast.ObjectKey: - buf.WriteString(t.Token.Text) - case *ast.ObjectItem: - p.prev = t.Pos() - buf.Write(p.objectItem(t)) - case *ast.LiteralType: - buf.Write(p.literalType(t)) - case *ast.ListType: - buf.Write(p.list(t)) - case *ast.ObjectType: - buf.Write(p.objectType(t)) - default: - fmt.Printf(" unknown type: %T\n", n) - } - - return buf.Bytes() -} - -func (p *printer) literalType(lit *ast.LiteralType) []byte { - result := []byte(lit.Token.Text) - switch lit.Token.Type { - case token.HEREDOC: - // Clear the trailing newline from heredocs - if result[len(result)-1] == '\n' { - result = result[:len(result)-1] - } - - // Poison lines 2+ so that we don't indent them - result = p.heredocIndent(result) - case token.STRING: - // If this is a multiline string, poison lines 2+ so we don't - // indent them. - if bytes.IndexRune(result, '\n') >= 0 { - result = p.heredocIndent(result) - } - } - - return result -} - -// objectItem returns the printable HCL form of an object item. An object type -// starts with one/multiple keys and has a value. The value might be of any -// type. -func (p *printer) objectItem(o *ast.ObjectItem) []byte { - defer un(trace(p, fmt.Sprintf("ObjectItem: %s", o.Keys[0].Token.Text))) - var buf bytes.Buffer - - if o.LeadComment != nil { - for _, comment := range o.LeadComment.List { - buf.WriteString(comment.Text) - buf.WriteByte(newline) - } - } - - // If key and val are on different lines, treat line comments like lead comments. - if o.LineComment != nil && o.Val.Pos().Line != o.Keys[0].Pos().Line { - for _, comment := range o.LineComment.List { - buf.WriteString(comment.Text) - buf.WriteByte(newline) - } - } - - for i, k := range o.Keys { - buf.WriteString(k.Token.Text) - buf.WriteByte(blank) - - // reach end of key - if o.Assign.IsValid() && i == len(o.Keys)-1 && len(o.Keys) == 1 { - buf.WriteString("=") - buf.WriteByte(blank) - } - } - - buf.Write(p.output(o.Val)) - - if o.LineComment != nil && o.Val.Pos().Line == o.Keys[0].Pos().Line { - buf.WriteByte(blank) - for _, comment := range o.LineComment.List { - buf.WriteString(comment.Text) - } - } - - return buf.Bytes() -} - -// objectType returns the printable HCL form of an object type. An object type -// begins with a brace and ends with a brace. -func (p *printer) objectType(o *ast.ObjectType) []byte { - defer un(trace(p, "ObjectType")) - var buf bytes.Buffer - buf.WriteString("{") - - var index int - var nextItem token.Pos - var commented, newlinePrinted bool - for { - // Determine the location of the next actual non-comment - // item. If we're at the end, the next item is the closing brace - if index != len(o.List.Items) { - nextItem = o.List.Items[index].Pos() - } else { - nextItem = o.Rbrace - } - - // Go through the standalone comments in the file and print out - // the comments that we should be for this object item. - for _, c := range p.standaloneComments { - printed := false - var lastCommentPos token.Pos - for _, comment := range c.List { - // We only care about comments after the previous item - // we've printed so that comments are printed in the - // correct locations (between two objects for example). - // And before the next item. - if comment.Pos().After(p.prev) && comment.Pos().Before(nextItem) { - // If there are standalone comments and the initial newline has not - // been printed yet, do it now. - if !newlinePrinted { - newlinePrinted = true - buf.WriteByte(newline) - } - - // add newline if it's between other printed nodes - if index > 0 { - commented = true - buf.WriteByte(newline) - } - - // Store this position - lastCommentPos = comment.Pos() - - // output the comment itself - buf.Write(p.indent(p.heredocIndent([]byte(comment.Text)))) - - // Set printed to true to note that we printed something - printed = true - - /* - if index != len(o.List.Items) { - buf.WriteByte(newline) // do not print on the end - } - */ - } - } - - // Stuff to do if we had comments - if printed { - // Always write a newline - buf.WriteByte(newline) - - // If there is another item in the object and our comment - // didn't hug it directly, then make sure there is a blank - // line separating them. - if nextItem != o.Rbrace && nextItem.Line != lastCommentPos.Line+1 { - buf.WriteByte(newline) - } - } - } - - if index == len(o.List.Items) { - p.prev = o.Rbrace - break - } - - // At this point we are sure that it's not a totally empty block: print - // the initial newline if it hasn't been printed yet by the previous - // block about standalone comments. - if !newlinePrinted { - buf.WriteByte(newline) - newlinePrinted = true - } - - // check if we have adjacent one liner items. If yes we'll going to align - // the comments. - var aligned []*ast.ObjectItem - for _, item := range o.List.Items[index:] { - // we don't group one line lists - if len(o.List.Items) == 1 { - break - } - - // one means a oneliner with out any lead comment - // two means a oneliner with lead comment - // anything else might be something else - cur := lines(string(p.objectItem(item))) - if cur > 2 { - break - } - - curPos := item.Pos() - - nextPos := token.Pos{} - if index != len(o.List.Items)-1 { - nextPos = o.List.Items[index+1].Pos() - } - - prevPos := token.Pos{} - if index != 0 { - prevPos = o.List.Items[index-1].Pos() - } - - // fmt.Println("DEBUG ----------------") - // fmt.Printf("prev = %+v prevPos: %s\n", prev, prevPos) - // fmt.Printf("cur = %+v curPos: %s\n", cur, curPos) - // fmt.Printf("next = %+v nextPos: %s\n", next, nextPos) - - if curPos.Line+1 == nextPos.Line { - aligned = append(aligned, item) - index++ - continue - } - - if curPos.Line-1 == prevPos.Line { - aligned = append(aligned, item) - index++ - - // finish if we have a new line or comment next. This happens - // if the next item is not adjacent - if curPos.Line+1 != nextPos.Line { - break - } - continue - } - - break - } - - // put newlines if the items are between other non aligned items. - // newlines are also added if there is a standalone comment already, so - // check it too - if !commented && index != len(aligned) { - buf.WriteByte(newline) - } - - if len(aligned) >= 1 { - p.prev = aligned[len(aligned)-1].Pos() - - items := p.alignedItems(aligned) - buf.Write(p.indent(items)) - } else { - p.prev = o.List.Items[index].Pos() - - buf.Write(p.indent(p.objectItem(o.List.Items[index]))) - index++ - } - - buf.WriteByte(newline) - } - - buf.WriteString("}") - return buf.Bytes() -} - -func (p *printer) alignedItems(items []*ast.ObjectItem) []byte { - var buf bytes.Buffer - - // find the longest key and value length, needed for alignment - var longestKeyLen int // longest key length - var longestValLen int // longest value length - for _, item := range items { - key := len(item.Keys[0].Token.Text) - val := len(p.output(item.Val)) - - if key > longestKeyLen { - longestKeyLen = key - } - - if val > longestValLen { - longestValLen = val - } - } - - for i, item := range items { - if item.LeadComment != nil { - for _, comment := range item.LeadComment.List { - buf.WriteString(comment.Text) - buf.WriteByte(newline) - } - } - - for i, k := range item.Keys { - keyLen := len(k.Token.Text) - buf.WriteString(k.Token.Text) - for i := 0; i < longestKeyLen-keyLen+1; i++ { - buf.WriteByte(blank) - } - - // reach end of key - if i == len(item.Keys)-1 && len(item.Keys) == 1 { - buf.WriteString("=") - buf.WriteByte(blank) - } - } - - val := p.output(item.Val) - valLen := len(val) - buf.Write(val) - - if item.Val.Pos().Line == item.Keys[0].Pos().Line && item.LineComment != nil { - for i := 0; i < longestValLen-valLen+1; i++ { - buf.WriteByte(blank) - } - - for _, comment := range item.LineComment.List { - buf.WriteString(comment.Text) - } - } - - // do not print for the last item - if i != len(items)-1 { - buf.WriteByte(newline) - } - } - - return buf.Bytes() -} - -// list returns the printable HCL form of an list type. -func (p *printer) list(l *ast.ListType) []byte { - if p.isSingleLineList(l) { - return p.singleLineList(l) - } - - var buf bytes.Buffer - buf.WriteString("[") - buf.WriteByte(newline) - - var longestLine int - for _, item := range l.List { - // for now we assume that the list only contains literal types - if lit, ok := item.(*ast.LiteralType); ok { - lineLen := len(lit.Token.Text) - if lineLen > longestLine { - longestLine = lineLen - } - } - } - - haveEmptyLine := false - for i, item := range l.List { - // If we have a lead comment, then we want to write that first - leadComment := false - if lit, ok := item.(*ast.LiteralType); ok && lit.LeadComment != nil { - leadComment = true - - // Ensure an empty line before every element with a - // lead comment (except the first item in a list). - if !haveEmptyLine && i != 0 { - buf.WriteByte(newline) - } - - for _, comment := range lit.LeadComment.List { - buf.Write(p.indent([]byte(comment.Text))) - buf.WriteByte(newline) - } - } - - // also indent each line - val := p.output(item) - curLen := len(val) - buf.Write(p.indent(val)) - - // if this item is a heredoc, then we output the comma on - // the next line. This is the only case this happens. - comma := []byte{','} - if lit, ok := item.(*ast.LiteralType); ok && lit.Token.Type == token.HEREDOC { - buf.WriteByte(newline) - comma = p.indent(comma) - } - - buf.Write(comma) - - if lit, ok := item.(*ast.LiteralType); ok && lit.LineComment != nil { - // if the next item doesn't have any comments, do not align - buf.WriteByte(blank) // align one space - for i := 0; i < longestLine-curLen; i++ { - buf.WriteByte(blank) - } - - for _, comment := range lit.LineComment.List { - buf.WriteString(comment.Text) - } - } - - buf.WriteByte(newline) - - // Ensure an empty line after every element with a - // lead comment (except the first item in a list). - haveEmptyLine = leadComment && i != len(l.List)-1 - if haveEmptyLine { - buf.WriteByte(newline) - } - } - - buf.WriteString("]") - return buf.Bytes() -} - -// isSingleLineList returns true if: -// * they were previously formatted entirely on one line -// * they consist entirely of literals -// * there are either no heredoc strings or the list has exactly one element -// * there are no line comments -func (printer) isSingleLineList(l *ast.ListType) bool { - for _, item := range l.List { - if item.Pos().Line != l.Lbrack.Line { - return false - } - - lit, ok := item.(*ast.LiteralType) - if !ok { - return false - } - - if lit.Token.Type == token.HEREDOC && len(l.List) != 1 { - return false - } - - if lit.LineComment != nil { - return false - } - } - - return true -} - -// singleLineList prints a simple single line list. -// For a definition of "simple", see isSingleLineList above. -func (p *printer) singleLineList(l *ast.ListType) []byte { - buf := &bytes.Buffer{} - - buf.WriteString("[") - for i, item := range l.List { - if i != 0 { - buf.WriteString(", ") - } - - // Output the item itself - buf.Write(p.output(item)) - - // The heredoc marker needs to be at the end of line. - if lit, ok := item.(*ast.LiteralType); ok && lit.Token.Type == token.HEREDOC { - buf.WriteByte(newline) - } - } - - buf.WriteString("]") - return buf.Bytes() -} - -// indent indents the lines of the given buffer for each non-empty line -func (p *printer) indent(buf []byte) []byte { - var prefix []byte - if p.cfg.SpacesWidth != 0 { - for i := 0; i < p.cfg.SpacesWidth; i++ { - prefix = append(prefix, blank) - } - } else { - prefix = []byte{tab} - } - - var res []byte - bol := true - for _, c := range buf { - if bol && c != '\n' { - res = append(res, prefix...) - } - - res = append(res, c) - bol = c == '\n' - } - return res -} - -// unindent removes all the indentation from the tombstoned lines -func (p *printer) unindent(buf []byte) []byte { - var res []byte - for i := 0; i < len(buf); i++ { - skip := len(buf)-i <= len(unindent) - if !skip { - skip = !bytes.Equal(unindent, buf[i:i+len(unindent)]) - } - if skip { - res = append(res, buf[i]) - continue - } - - // We have a marker. we have to backtrace here and clean out - // any whitespace ahead of our tombstone up to a \n - for j := len(res) - 1; j >= 0; j-- { - if res[j] == '\n' { - break - } - - res = res[:j] - } - - // Skip the entire unindent marker - i += len(unindent) - 1 - } - - return res -} - -// heredocIndent marks all the 2nd and further lines as unindentable -func (p *printer) heredocIndent(buf []byte) []byte { - var res []byte - bol := false - for _, c := range buf { - if bol && c != '\n' { - res = append(res, unindent...) - } - res = append(res, c) - bol = c == '\n' - } - return res -} - -// isSingleLineObject tells whether the given object item is a single -// line object such as "obj {}". -// -// A single line object: -// -// * has no lead comments (hence multi-line) -// * has no assignment -// * has no values in the stanza (within {}) -// -func (p *printer) isSingleLineObject(val *ast.ObjectItem) bool { - // If there is a lead comment, can't be one line - if val.LeadComment != nil { - return false - } - - // If there is assignment, we always break by line - if val.Assign.IsValid() { - return false - } - - // If it isn't an object type, then its not a single line object - ot, ok := val.Val.(*ast.ObjectType) - if !ok { - return false - } - - // If the object has no items, it is single line! - return len(ot.List.Items) == 0 -} - -func lines(txt string) int { - endline := 1 - for i := 0; i < len(txt); i++ { - if txt[i] == '\n' { - endline++ - } - } - return endline -} - -// ---------------------------------------------------------------------------- -// Tracing support - -func (p *printer) printTrace(a ...interface{}) { - if !p.enableTrace { - return - } - - const dots = ". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " - const n = len(dots) - i := 2 * p.indentTrace - for i > n { - fmt.Print(dots) - i -= n - } - // i <= n - fmt.Print(dots[0:i]) - fmt.Println(a...) -} - -func trace(p *printer, msg string) *printer { - p.printTrace(msg, "(") - p.indentTrace++ - return p -} - -// Usage pattern: defer un(trace(p, "...")) -func un(p *printer) { - p.indentTrace-- - p.printTrace(")") -} diff --git a/vendor/github.com/hashicorp/hcl/hcl/printer/printer.go b/vendor/github.com/hashicorp/hcl/hcl/printer/printer.go deleted file mode 100644 index 6617ab8..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/printer/printer.go +++ /dev/null @@ -1,66 +0,0 @@ -// Package printer implements printing of AST nodes to HCL format. -package printer - -import ( - "bytes" - "io" - "text/tabwriter" - - "github.com/hashicorp/hcl/hcl/ast" - "github.com/hashicorp/hcl/hcl/parser" -) - -var DefaultConfig = Config{ - SpacesWidth: 2, -} - -// A Config node controls the output of Fprint. -type Config struct { - SpacesWidth int // if set, it will use spaces instead of tabs for alignment -} - -func (c *Config) Fprint(output io.Writer, node ast.Node) error { - p := &printer{ - cfg: *c, - comments: make([]*ast.CommentGroup, 0), - standaloneComments: make([]*ast.CommentGroup, 0), - // enableTrace: true, - } - - p.collectComments(node) - - if _, err := output.Write(p.unindent(p.output(node))); err != nil { - return err - } - - // flush tabwriter, if any - var err error - if tw, _ := output.(*tabwriter.Writer); tw != nil { - err = tw.Flush() - } - - return err -} - -// Fprint "pretty-prints" an HCL node to output -// It calls Config.Fprint with default settings. -func Fprint(output io.Writer, node ast.Node) error { - return DefaultConfig.Fprint(output, node) -} - -// Format formats src HCL and returns the result. -func Format(src []byte) ([]byte, error) { - node, err := parser.Parse(src) - if err != nil { - return nil, err - } - - var buf bytes.Buffer - if err := DefaultConfig.Fprint(&buf, node); err != nil { - return nil, err - } - - // Add trailing newline to result - buf.WriteString("\n") - return buf.Bytes(), nil -} diff --git a/vendor/github.com/hashicorp/hcl/hcl/scanner/scanner.go b/vendor/github.com/hashicorp/hcl/hcl/scanner/scanner.go deleted file mode 100644 index 624a18f..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/scanner/scanner.go +++ /dev/null @@ -1,652 +0,0 @@ -// Package scanner implements a scanner for HCL (HashiCorp Configuration -// Language) source text. -package scanner - -import ( - "bytes" - "fmt" - "os" - "regexp" - "unicode" - "unicode/utf8" - - "github.com/hashicorp/hcl/hcl/token" -) - -// eof represents a marker rune for the end of the reader. -const eof = rune(0) - -// Scanner defines a lexical scanner -type Scanner struct { - buf *bytes.Buffer // Source buffer for advancing and scanning - src []byte // Source buffer for immutable access - - // Source Position - srcPos token.Pos // current position - prevPos token.Pos // previous position, used for peek() method - - lastCharLen int // length of last character in bytes - lastLineLen int // length of last line in characters (for correct column reporting) - - tokStart int // token text start position - tokEnd int // token text end position - - // Error is called for each error encountered. If no Error - // function is set, the error is reported to os.Stderr. - Error func(pos token.Pos, msg string) - - // ErrorCount is incremented by one for each error encountered. - ErrorCount int - - // tokPos is the start position of most recently scanned token; set by - // Scan. The Filename field is always left untouched by the Scanner. If - // an error is reported (via Error) and Position is invalid, the scanner is - // not inside a token. - tokPos token.Pos -} - -// New creates and initializes a new instance of Scanner using src as -// its source content. -func New(src []byte) *Scanner { - // even though we accept a src, we read from a io.Reader compatible type - // (*bytes.Buffer). So in the future we might easily change it to streaming - // read. - b := bytes.NewBuffer(src) - s := &Scanner{ - buf: b, - src: src, - } - - // srcPosition always starts with 1 - s.srcPos.Line = 1 - return s -} - -// next reads the next rune from the bufferred reader. Returns the rune(0) if -// an error occurs (or io.EOF is returned). -func (s *Scanner) next() rune { - ch, size, err := s.buf.ReadRune() - if err != nil { - // advance for error reporting - s.srcPos.Column++ - s.srcPos.Offset += size - s.lastCharLen = size - return eof - } - - // remember last position - s.prevPos = s.srcPos - - s.srcPos.Column++ - s.lastCharLen = size - s.srcPos.Offset += size - - if ch == utf8.RuneError && size == 1 { - s.err("illegal UTF-8 encoding") - return ch - } - - if ch == '\n' { - s.srcPos.Line++ - s.lastLineLen = s.srcPos.Column - s.srcPos.Column = 0 - } - - if ch == '\x00' { - s.err("unexpected null character (0x00)") - return eof - } - - if ch == '\uE123' { - s.err("unicode code point U+E123 reserved for internal use") - return utf8.RuneError - } - - // debug - // fmt.Printf("ch: %q, offset:column: %d:%d\n", ch, s.srcPos.Offset, s.srcPos.Column) - return ch -} - -// unread unreads the previous read Rune and updates the source position -func (s *Scanner) unread() { - if err := s.buf.UnreadRune(); err != nil { - panic(err) // this is user fault, we should catch it - } - s.srcPos = s.prevPos // put back last position -} - -// peek returns the next rune without advancing the reader. -func (s *Scanner) peek() rune { - peek, _, err := s.buf.ReadRune() - if err != nil { - return eof - } - - s.buf.UnreadRune() - return peek -} - -// Scan scans the next token and returns the token. -func (s *Scanner) Scan() token.Token { - ch := s.next() - - // skip white space - for isWhitespace(ch) { - ch = s.next() - } - - var tok token.Type - - // token text markings - s.tokStart = s.srcPos.Offset - s.lastCharLen - - // token position, initial next() is moving the offset by one(size of rune - // actually), though we are interested with the starting point - s.tokPos.Offset = s.srcPos.Offset - s.lastCharLen - if s.srcPos.Column > 0 { - // common case: last character was not a '\n' - s.tokPos.Line = s.srcPos.Line - s.tokPos.Column = s.srcPos.Column - } else { - // last character was a '\n' - // (we cannot be at the beginning of the source - // since we have called next() at least once) - s.tokPos.Line = s.srcPos.Line - 1 - s.tokPos.Column = s.lastLineLen - } - - switch { - case isLetter(ch): - tok = token.IDENT - lit := s.scanIdentifier() - if lit == "true" || lit == "false" { - tok = token.BOOL - } - case isDecimal(ch): - tok = s.scanNumber(ch) - default: - switch ch { - case eof: - tok = token.EOF - case '"': - tok = token.STRING - s.scanString() - case '#', '/': - tok = token.COMMENT - s.scanComment(ch) - case '.': - tok = token.PERIOD - ch = s.peek() - if isDecimal(ch) { - tok = token.FLOAT - ch = s.scanMantissa(ch) - ch = s.scanExponent(ch) - } - case '<': - tok = token.HEREDOC - s.scanHeredoc() - case '[': - tok = token.LBRACK - case ']': - tok = token.RBRACK - case '{': - tok = token.LBRACE - case '}': - tok = token.RBRACE - case ',': - tok = token.COMMA - case '=': - tok = token.ASSIGN - case '+': - tok = token.ADD - case '-': - if isDecimal(s.peek()) { - ch := s.next() - tok = s.scanNumber(ch) - } else { - tok = token.SUB - } - default: - s.err("illegal char") - } - } - - // finish token ending - s.tokEnd = s.srcPos.Offset - - // create token literal - var tokenText string - if s.tokStart >= 0 { - tokenText = string(s.src[s.tokStart:s.tokEnd]) - } - s.tokStart = s.tokEnd // ensure idempotency of tokenText() call - - return token.Token{ - Type: tok, - Pos: s.tokPos, - Text: tokenText, - } -} - -func (s *Scanner) scanComment(ch rune) { - // single line comments - if ch == '#' || (ch == '/' && s.peek() != '*') { - if ch == '/' && s.peek() != '/' { - s.err("expected '/' for comment") - return - } - - ch = s.next() - for ch != '\n' && ch >= 0 && ch != eof { - ch = s.next() - } - if ch != eof && ch >= 0 { - s.unread() - } - return - } - - // be sure we get the character after /* This allows us to find comment's - // that are not erminated - if ch == '/' { - s.next() - ch = s.next() // read character after "/*" - } - - // look for /* - style comments - for { - if ch < 0 || ch == eof { - s.err("comment not terminated") - break - } - - ch0 := ch - ch = s.next() - if ch0 == '*' && ch == '/' { - break - } - } -} - -// scanNumber scans a HCL number definition starting with the given rune -func (s *Scanner) scanNumber(ch rune) token.Type { - if ch == '0' { - // check for hexadecimal, octal or float - ch = s.next() - if ch == 'x' || ch == 'X' { - // hexadecimal - ch = s.next() - found := false - for isHexadecimal(ch) { - ch = s.next() - found = true - } - - if !found { - s.err("illegal hexadecimal number") - } - - if ch != eof { - s.unread() - } - - return token.NUMBER - } - - // now it's either something like: 0421(octal) or 0.1231(float) - illegalOctal := false - for isDecimal(ch) { - ch = s.next() - if ch == '8' || ch == '9' { - // this is just a possibility. For example 0159 is illegal, but - // 0159.23 is valid. So we mark a possible illegal octal. If - // the next character is not a period, we'll print the error. - illegalOctal = true - } - } - - if ch == 'e' || ch == 'E' { - ch = s.scanExponent(ch) - return token.FLOAT - } - - if ch == '.' { - ch = s.scanFraction(ch) - - if ch == 'e' || ch == 'E' { - ch = s.next() - ch = s.scanExponent(ch) - } - return token.FLOAT - } - - if illegalOctal { - s.err("illegal octal number") - } - - if ch != eof { - s.unread() - } - return token.NUMBER - } - - s.scanMantissa(ch) - ch = s.next() // seek forward - if ch == 'e' || ch == 'E' { - ch = s.scanExponent(ch) - return token.FLOAT - } - - if ch == '.' { - ch = s.scanFraction(ch) - if ch == 'e' || ch == 'E' { - ch = s.next() - ch = s.scanExponent(ch) - } - return token.FLOAT - } - - if ch != eof { - s.unread() - } - return token.NUMBER -} - -// scanMantissa scans the mantissa beginning from the rune. It returns the next -// non decimal rune. It's used to determine wheter it's a fraction or exponent. -func (s *Scanner) scanMantissa(ch rune) rune { - scanned := false - for isDecimal(ch) { - ch = s.next() - scanned = true - } - - if scanned && ch != eof { - s.unread() - } - return ch -} - -// scanFraction scans the fraction after the '.' rune -func (s *Scanner) scanFraction(ch rune) rune { - if ch == '.' { - ch = s.peek() // we peek just to see if we can move forward - ch = s.scanMantissa(ch) - } - return ch -} - -// scanExponent scans the remaining parts of an exponent after the 'e' or 'E' -// rune. -func (s *Scanner) scanExponent(ch rune) rune { - if ch == 'e' || ch == 'E' { - ch = s.next() - if ch == '-' || ch == '+' { - ch = s.next() - } - ch = s.scanMantissa(ch) - } - return ch -} - -// scanHeredoc scans a heredoc string -func (s *Scanner) scanHeredoc() { - // Scan the second '<' in example: '<<EOF' - if s.next() != '<' { - s.err("heredoc expected second '<', didn't see it") - return - } - - // Get the original offset so we can read just the heredoc ident - offs := s.srcPos.Offset - - // Scan the identifier - ch := s.next() - - // Indented heredoc syntax - if ch == '-' { - ch = s.next() - } - - for isLetter(ch) || isDigit(ch) { - ch = s.next() - } - - // If we reached an EOF then that is not good - if ch == eof { - s.err("heredoc not terminated") - return - } - - // Ignore the '\r' in Windows line endings - if ch == '\r' { - if s.peek() == '\n' { - ch = s.next() - } - } - - // If we didn't reach a newline then that is also not good - if ch != '\n' { - s.err("invalid characters in heredoc anchor") - return - } - - // Read the identifier - identBytes := s.src[offs : s.srcPos.Offset-s.lastCharLen] - if len(identBytes) == 0 || (len(identBytes) == 1 && identBytes[0] == '-') { - s.err("zero-length heredoc anchor") - return - } - - var identRegexp *regexp.Regexp - if identBytes[0] == '-' { - identRegexp = regexp.MustCompile(fmt.Sprintf(`^[[:space:]]*%s\r*\z`, identBytes[1:])) - } else { - identRegexp = regexp.MustCompile(fmt.Sprintf(`^[[:space:]]*%s\r*\z`, identBytes)) - } - - // Read the actual string value - lineStart := s.srcPos.Offset - for { - ch := s.next() - - // Special newline handling. - if ch == '\n' { - // Math is fast, so we first compare the byte counts to see if we have a chance - // of seeing the same identifier - if the length is less than the number of bytes - // in the identifier, this cannot be a valid terminator. - lineBytesLen := s.srcPos.Offset - s.lastCharLen - lineStart - if lineBytesLen >= len(identBytes) && identRegexp.Match(s.src[lineStart:s.srcPos.Offset-s.lastCharLen]) { - break - } - - // Not an anchor match, record the start of a new line - lineStart = s.srcPos.Offset - } - - if ch == eof { - s.err("heredoc not terminated") - return - } - } - - return -} - -// scanString scans a quoted string -func (s *Scanner) scanString() { - braces := 0 - for { - // '"' opening already consumed - // read character after quote - ch := s.next() - - if (ch == '\n' && braces == 0) || ch < 0 || ch == eof { - s.err("literal not terminated") - return - } - - if ch == '"' && braces == 0 { - break - } - - // If we're going into a ${} then we can ignore quotes for awhile - if braces == 0 && ch == '$' && s.peek() == '{' { - braces++ - s.next() - } else if braces > 0 && ch == '{' { - braces++ - } - if braces > 0 && ch == '}' { - braces-- - } - - if ch == '\\' { - s.scanEscape() - } - } - - return -} - -// scanEscape scans an escape sequence -func (s *Scanner) scanEscape() rune { - // http://en.cppreference.com/w/cpp/language/escape - ch := s.next() // read character after '/' - switch ch { - case 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', '"': - // nothing to do - case '0', '1', '2', '3', '4', '5', '6', '7': - // octal notation - ch = s.scanDigits(ch, 8, 3) - case 'x': - // hexademical notation - ch = s.scanDigits(s.next(), 16, 2) - case 'u': - // universal character name - ch = s.scanDigits(s.next(), 16, 4) - case 'U': - // universal character name - ch = s.scanDigits(s.next(), 16, 8) - default: - s.err("illegal char escape") - } - return ch -} - -// scanDigits scans a rune with the given base for n times. For example an -// octal notation \184 would yield in scanDigits(ch, 8, 3) -func (s *Scanner) scanDigits(ch rune, base, n int) rune { - start := n - for n > 0 && digitVal(ch) < base { - ch = s.next() - if ch == eof { - // If we see an EOF, we halt any more scanning of digits - // immediately. - break - } - - n-- - } - if n > 0 { - s.err("illegal char escape") - } - - if n != start && ch != eof { - // we scanned all digits, put the last non digit char back, - // only if we read anything at all - s.unread() - } - - return ch -} - -// scanIdentifier scans an identifier and returns the literal string -func (s *Scanner) scanIdentifier() string { - offs := s.srcPos.Offset - s.lastCharLen - ch := s.next() - for isLetter(ch) || isDigit(ch) || ch == '-' || ch == '.' { - ch = s.next() - } - - if ch != eof { - s.unread() // we got identifier, put back latest char - } - - return string(s.src[offs:s.srcPos.Offset]) -} - -// recentPosition returns the position of the character immediately after the -// character or token returned by the last call to Scan. -func (s *Scanner) recentPosition() (pos token.Pos) { - pos.Offset = s.srcPos.Offset - s.lastCharLen - switch { - case s.srcPos.Column > 0: - // common case: last character was not a '\n' - pos.Line = s.srcPos.Line - pos.Column = s.srcPos.Column - case s.lastLineLen > 0: - // last character was a '\n' - // (we cannot be at the beginning of the source - // since we have called next() at least once) - pos.Line = s.srcPos.Line - 1 - pos.Column = s.lastLineLen - default: - // at the beginning of the source - pos.Line = 1 - pos.Column = 1 - } - return -} - -// err prints the error of any scanning to s.Error function. If the function is -// not defined, by default it prints them to os.Stderr -func (s *Scanner) err(msg string) { - s.ErrorCount++ - pos := s.recentPosition() - - if s.Error != nil { - s.Error(pos, msg) - return - } - - fmt.Fprintf(os.Stderr, "%s: %s\n", pos, msg) -} - -// isHexadecimal returns true if the given rune is a letter -func isLetter(ch rune) bool { - return 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' || ch == '_' || ch >= 0x80 && unicode.IsLetter(ch) -} - -// isDigit returns true if the given rune is a decimal digit -func isDigit(ch rune) bool { - return '0' <= ch && ch <= '9' || ch >= 0x80 && unicode.IsDigit(ch) -} - -// isDecimal returns true if the given rune is a decimal number -func isDecimal(ch rune) bool { - return '0' <= ch && ch <= '9' -} - -// isHexadecimal returns true if the given rune is an hexadecimal number -func isHexadecimal(ch rune) bool { - return '0' <= ch && ch <= '9' || 'a' <= ch && ch <= 'f' || 'A' <= ch && ch <= 'F' -} - -// isWhitespace returns true if the rune is a space, tab, newline or carriage return -func isWhitespace(ch rune) bool { - return ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r' -} - -// digitVal returns the integer value of a given octal,decimal or hexadecimal rune -func digitVal(ch rune) int { - switch { - case '0' <= ch && ch <= '9': - return int(ch - '0') - case 'a' <= ch && ch <= 'f': - return int(ch - 'a' + 10) - case 'A' <= ch && ch <= 'F': - return int(ch - 'A' + 10) - } - return 16 // larger than any legal digit val -} diff --git a/vendor/github.com/hashicorp/hcl/hcl/strconv/quote.go b/vendor/github.com/hashicorp/hcl/hcl/strconv/quote.go deleted file mode 100644 index 5f981ea..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/strconv/quote.go +++ /dev/null @@ -1,241 +0,0 @@ -package strconv - -import ( - "errors" - "unicode/utf8" -) - -// ErrSyntax indicates that a value does not have the right syntax for the target type. -var ErrSyntax = errors.New("invalid syntax") - -// Unquote interprets s as a single-quoted, double-quoted, -// or backquoted Go string literal, returning the string value -// that s quotes. (If s is single-quoted, it would be a Go -// character literal; Unquote returns the corresponding -// one-character string.) -func Unquote(s string) (t string, err error) { - n := len(s) - if n < 2 { - return "", ErrSyntax - } - quote := s[0] - if quote != s[n-1] { - return "", ErrSyntax - } - s = s[1 : n-1] - - if quote != '"' { - return "", ErrSyntax - } - if !contains(s, '$') && !contains(s, '{') && contains(s, '\n') { - return "", ErrSyntax - } - - // Is it trivial? Avoid allocation. - if !contains(s, '\\') && !contains(s, quote) && !contains(s, '$') { - switch quote { - case '"': - return s, nil - case '\'': - r, size := utf8.DecodeRuneInString(s) - if size == len(s) && (r != utf8.RuneError || size != 1) { - return s, nil - } - } - } - - var runeTmp [utf8.UTFMax]byte - buf := make([]byte, 0, 3*len(s)/2) // Try to avoid more allocations. - for len(s) > 0 { - // If we're starting a '${}' then let it through un-unquoted. - // Specifically: we don't unquote any characters within the `${}` - // section. - if s[0] == '$' && len(s) > 1 && s[1] == '{' { - buf = append(buf, '$', '{') - s = s[2:] - - // Continue reading until we find the closing brace, copying as-is - braces := 1 - for len(s) > 0 && braces > 0 { - r, size := utf8.DecodeRuneInString(s) - if r == utf8.RuneError { - return "", ErrSyntax - } - - s = s[size:] - - n := utf8.EncodeRune(runeTmp[:], r) - buf = append(buf, runeTmp[:n]...) - - switch r { - case '{': - braces++ - case '}': - braces-- - } - } - if braces != 0 { - return "", ErrSyntax - } - if len(s) == 0 { - // If there's no string left, we're done! - break - } else { - // If there's more left, we need to pop back up to the top of the loop - // in case there's another interpolation in this string. - continue - } - } - - if s[0] == '\n' { - return "", ErrSyntax - } - - c, multibyte, ss, err := unquoteChar(s, quote) - if err != nil { - return "", err - } - s = ss - if c < utf8.RuneSelf || !multibyte { - buf = append(buf, byte(c)) - } else { - n := utf8.EncodeRune(runeTmp[:], c) - buf = append(buf, runeTmp[:n]...) - } - if quote == '\'' && len(s) != 0 { - // single-quoted must be single character - return "", ErrSyntax - } - } - return string(buf), nil -} - -// contains reports whether the string contains the byte c. -func contains(s string, c byte) bool { - for i := 0; i < len(s); i++ { - if s[i] == c { - return true - } - } - return false -} - -func unhex(b byte) (v rune, ok bool) { - c := rune(b) - switch { - case '0' <= c && c <= '9': - return c - '0', true - case 'a' <= c && c <= 'f': - return c - 'a' + 10, true - case 'A' <= c && c <= 'F': - return c - 'A' + 10, true - } - return -} - -func unquoteChar(s string, quote byte) (value rune, multibyte bool, tail string, err error) { - // easy cases - switch c := s[0]; { - case c == quote && (quote == '\'' || quote == '"'): - err = ErrSyntax - return - case c >= utf8.RuneSelf: - r, size := utf8.DecodeRuneInString(s) - return r, true, s[size:], nil - case c != '\\': - return rune(s[0]), false, s[1:], nil - } - - // hard case: c is backslash - if len(s) <= 1 { - err = ErrSyntax - return - } - c := s[1] - s = s[2:] - - switch c { - case 'a': - value = '\a' - case 'b': - value = '\b' - case 'f': - value = '\f' - case 'n': - value = '\n' - case 'r': - value = '\r' - case 't': - value = '\t' - case 'v': - value = '\v' - case 'x', 'u', 'U': - n := 0 - switch c { - case 'x': - n = 2 - case 'u': - n = 4 - case 'U': - n = 8 - } - var v rune - if len(s) < n { - err = ErrSyntax - return - } - for j := 0; j < n; j++ { - x, ok := unhex(s[j]) - if !ok { - err = ErrSyntax - return - } - v = v<<4 | x - } - s = s[n:] - if c == 'x' { - // single-byte string, possibly not UTF-8 - value = v - break - } - if v > utf8.MaxRune { - err = ErrSyntax - return - } - value = v - multibyte = true - case '0', '1', '2', '3', '4', '5', '6', '7': - v := rune(c) - '0' - if len(s) < 2 { - err = ErrSyntax - return - } - for j := 0; j < 2; j++ { // one digit already; two more - x := rune(s[j]) - '0' - if x < 0 || x > 7 { - err = ErrSyntax - return - } - v = (v << 3) | x - } - s = s[2:] - if v > 255 { - err = ErrSyntax - return - } - value = v - case '\\': - value = '\\' - case '\'', '"': - if c != quote { - err = ErrSyntax - return - } - value = rune(c) - default: - err = ErrSyntax - return - } - tail = s - return -} diff --git a/vendor/github.com/hashicorp/hcl/hcl/token/position.go b/vendor/github.com/hashicorp/hcl/hcl/token/position.go deleted file mode 100644 index 59c1bb7..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/token/position.go +++ /dev/null @@ -1,46 +0,0 @@ -package token - -import "fmt" - -// Pos describes an arbitrary source position -// including the file, line, and column location. -// A Position is valid if the line number is > 0. -type Pos struct { - Filename string // filename, if any - Offset int // offset, starting at 0 - Line int // line number, starting at 1 - Column int // column number, starting at 1 (character count) -} - -// IsValid returns true if the position is valid. -func (p *Pos) IsValid() bool { return p.Line > 0 } - -// String returns a string in one of several forms: -// -// file:line:column valid position with file name -// line:column valid position without file name -// file invalid position with file name -// - invalid position without file name -func (p Pos) String() string { - s := p.Filename - if p.IsValid() { - if s != "" { - s += ":" - } - s += fmt.Sprintf("%d:%d", p.Line, p.Column) - } - if s == "" { - s = "-" - } - return s -} - -// Before reports whether the position p is before u. -func (p Pos) Before(u Pos) bool { - return u.Offset > p.Offset || u.Line > p.Line -} - -// After reports whether the position p is after u. -func (p Pos) After(u Pos) bool { - return u.Offset < p.Offset || u.Line < p.Line -} diff --git a/vendor/github.com/hashicorp/hcl/hcl/token/token.go b/vendor/github.com/hashicorp/hcl/hcl/token/token.go deleted file mode 100644 index e37c066..0000000 --- a/vendor/github.com/hashicorp/hcl/hcl/token/token.go +++ /dev/null @@ -1,219 +0,0 @@ -// Package token defines constants representing the lexical tokens for HCL -// (HashiCorp Configuration Language) -package token - -import ( - "fmt" - "strconv" - "strings" - - hclstrconv "github.com/hashicorp/hcl/hcl/strconv" -) - -// Token defines a single HCL token which can be obtained via the Scanner -type Token struct { - Type Type - Pos Pos - Text string - JSON bool -} - -// Type is the set of lexical tokens of the HCL (HashiCorp Configuration Language) -type Type int - -const ( - // Special tokens - ILLEGAL Type = iota - EOF - COMMENT - - identifier_beg - IDENT // literals - literal_beg - NUMBER // 12345 - FLOAT // 123.45 - BOOL // true,false - STRING // "abc" - HEREDOC // <<FOO\nbar\nFOO - literal_end - identifier_end - - operator_beg - LBRACK // [ - LBRACE // { - COMMA // , - PERIOD // . - - RBRACK // ] - RBRACE // } - - ASSIGN // = - ADD // + - SUB // - - operator_end -) - -var tokens = [...]string{ - ILLEGAL: "ILLEGAL", - - EOF: "EOF", - COMMENT: "COMMENT", - - IDENT: "IDENT", - NUMBER: "NUMBER", - FLOAT: "FLOAT", - BOOL: "BOOL", - STRING: "STRING", - - LBRACK: "LBRACK", - LBRACE: "LBRACE", - COMMA: "COMMA", - PERIOD: "PERIOD", - HEREDOC: "HEREDOC", - - RBRACK: "RBRACK", - RBRACE: "RBRACE", - - ASSIGN: "ASSIGN", - ADD: "ADD", - SUB: "SUB", -} - -// String returns the string corresponding to the token tok. -func (t Type) String() string { - s := "" - if 0 <= t && t < Type(len(tokens)) { - s = tokens[t] - } - if s == "" { - s = "token(" + strconv.Itoa(int(t)) + ")" - } - return s -} - -// IsIdentifier returns true for tokens corresponding to identifiers and basic -// type literals; it returns false otherwise. -func (t Type) IsIdentifier() bool { return identifier_beg < t && t < identifier_end } - -// IsLiteral returns true for tokens corresponding to basic type literals; it -// returns false otherwise. -func (t Type) IsLiteral() bool { return literal_beg < t && t < literal_end } - -// IsOperator returns true for tokens corresponding to operators and -// delimiters; it returns false otherwise. -func (t Type) IsOperator() bool { return operator_beg < t && t < operator_end } - -// String returns the token's literal text. Note that this is only -// applicable for certain token types, such as token.IDENT, -// token.STRING, etc.. -func (t Token) String() string { - return fmt.Sprintf("%s %s %s", t.Pos.String(), t.Type.String(), t.Text) -} - -// Value returns the properly typed value for this token. The type of -// the returned interface{} is guaranteed based on the Type field. -// -// This can only be called for literal types. If it is called for any other -// type, this will panic. -func (t Token) Value() interface{} { - switch t.Type { - case BOOL: - if t.Text == "true" { - return true - } else if t.Text == "false" { - return false - } - - panic("unknown bool value: " + t.Text) - case FLOAT: - v, err := strconv.ParseFloat(t.Text, 64) - if err != nil { - panic(err) - } - - return float64(v) - case NUMBER: - v, err := strconv.ParseInt(t.Text, 0, 64) - if err != nil { - panic(err) - } - - return int64(v) - case IDENT: - return t.Text - case HEREDOC: - return unindentHeredoc(t.Text) - case STRING: - // Determine the Unquote method to use. If it came from JSON, - // then we need to use the built-in unquote since we have to - // escape interpolations there. - f := hclstrconv.Unquote - if t.JSON { - f = strconv.Unquote - } - - // This case occurs if json null is used - if t.Text == "" { - return "" - } - - v, err := f(t.Text) - if err != nil { - panic(fmt.Sprintf("unquote %s err: %s", t.Text, err)) - } - - return v - default: - panic(fmt.Sprintf("unimplemented Value for type: %s", t.Type)) - } -} - -// unindentHeredoc returns the string content of a HEREDOC if it is started with << -// and the content of a HEREDOC with the hanging indent removed if it is started with -// a <<-, and the terminating line is at least as indented as the least indented line. -func unindentHeredoc(heredoc string) string { - // We need to find the end of the marker - idx := strings.IndexByte(heredoc, '\n') - if idx == -1 { - panic("heredoc doesn't contain newline") - } - - unindent := heredoc[2] == '-' - - // We can optimize if the heredoc isn't marked for indentation - if !unindent { - return string(heredoc[idx+1 : len(heredoc)-idx+1]) - } - - // We need to unindent each line based on the indentation level of the marker - lines := strings.Split(string(heredoc[idx+1:len(heredoc)-idx+2]), "\n") - whitespacePrefix := lines[len(lines)-1] - - isIndented := true - for _, v := range lines { - if strings.HasPrefix(v, whitespacePrefix) { - continue - } - - isIndented = false - break - } - - // If all lines are not at least as indented as the terminating mark, return the - // heredoc as is, but trim the leading space from the marker on the final line. - if !isIndented { - return strings.TrimRight(string(heredoc[idx+1:len(heredoc)-idx+1]), " \t") - } - - unindentedLines := make([]string, len(lines)) - for k, v := range lines { - if k == len(lines)-1 { - unindentedLines[k] = "" - break - } - - unindentedLines[k] = strings.TrimPrefix(v, whitespacePrefix) - } - - return strings.Join(unindentedLines, "\n") -} |