diff options
Diffstat (limited to 'vendor/github.com/vektah/gqlgen/neelance/query/query.go')
| -rw-r--r-- | vendor/github.com/vektah/gqlgen/neelance/query/query.go | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/vendor/github.com/vektah/gqlgen/neelance/query/query.go b/vendor/github.com/vektah/gqlgen/neelance/query/query.go deleted file mode 100644 index b6f35354..00000000 --- a/vendor/github.com/vektah/gqlgen/neelance/query/query.go +++ /dev/null @@ -1,261 +0,0 @@ -package query - -import ( - "fmt" - "strings" - "text/scanner" - - "github.com/vektah/gqlgen/neelance/common" - "github.com/vektah/gqlgen/neelance/errors" -) - -type Document struct { - Operations OperationList - Fragments FragmentList -} - -type OperationList []*Operation - -func (l OperationList) Get(name string) *Operation { - for _, f := range l { - if f.Name.Name == name { - return f - } - } - return nil -} - -type FragmentList []*FragmentDecl - -func (l FragmentList) Get(name string) *FragmentDecl { - for _, f := range l { - if f.Name.Name == name { - return f - } - } - return nil -} - -type Operation struct { - Type OperationType - Name common.Ident - Vars common.InputValueList - Selections []Selection - Directives common.DirectiveList - Loc errors.Location -} - -type OperationType string - -const ( - Query OperationType = "QUERY" - Mutation = "MUTATION" - Subscription = "SUBSCRIPTION" -) - -type Fragment struct { - On common.TypeName - Selections []Selection -} - -type FragmentDecl struct { - Fragment - Name common.Ident - Directives common.DirectiveList - Loc errors.Location -} - -type Selection interface { - isSelection() -} - -type Field struct { - Alias common.Ident - Name common.Ident - Arguments common.ArgumentList - Directives common.DirectiveList - Selections []Selection - SelectionSetLoc errors.Location -} - -type InlineFragment struct { - Fragment - Directives common.DirectiveList - Loc errors.Location -} - -type FragmentSpread struct { - Name common.Ident - Directives common.DirectiveList - Loc errors.Location -} - -func (Field) isSelection() {} -func (InlineFragment) isSelection() {} -func (FragmentSpread) isSelection() {} - -func Parse(queryString string) (*Document, *errors.QueryError) { - sc := &scanner.Scanner{ - Mode: scanner.ScanIdents | scanner.ScanInts | scanner.ScanFloats | scanner.ScanStrings, - } - sc.Init(strings.NewReader(queryString)) - - l := common.New(sc) - var doc *Document - err := l.CatchSyntaxError(func() { - doc = parseDocument(l) - }) - if err != nil { - return nil, err - } - - return doc, nil -} - -func parseDocument(l *common.Lexer) *Document { - d := &Document{} - for l.Peek() != scanner.EOF { - if l.Peek() == '{' { - op := &Operation{Type: Query, Loc: l.Location()} - op.Selections = parseSelectionSet(l) - d.Operations = append(d.Operations, op) - continue - } - - loc := l.Location() - switch x := l.ConsumeIdent(); x { - case "query": - op := parseOperation(l, Query) - op.Loc = loc - d.Operations = append(d.Operations, op) - - case "mutation": - d.Operations = append(d.Operations, parseOperation(l, Mutation)) - - case "subscription": - d.Operations = append(d.Operations, parseOperation(l, Subscription)) - - case "fragment": - frag := parseFragment(l) - frag.Loc = loc - d.Fragments = append(d.Fragments, frag) - - default: - l.SyntaxError(fmt.Sprintf(`unexpected %q, expecting "fragment"`, x)) - } - } - return d -} - -func parseOperation(l *common.Lexer, opType OperationType) *Operation { - op := &Operation{Type: opType} - op.Name.Loc = l.Location() - if l.Peek() == scanner.Ident { - op.Name = l.ConsumeIdentWithLoc() - } - op.Directives = common.ParseDirectives(l) - if l.Peek() == '(' { - l.ConsumeToken('(') - for l.Peek() != ')' { - loc := l.Location() - l.ConsumeToken('$') - iv := common.ParseInputValue(l) - iv.Loc = loc - op.Vars = append(op.Vars, iv) - } - l.ConsumeToken(')') - } - op.Selections = parseSelectionSet(l) - return op -} - -func parseFragment(l *common.Lexer) *FragmentDecl { - f := &FragmentDecl{} - f.Name = l.ConsumeIdentWithLoc() - l.ConsumeKeyword("on") - f.On = common.TypeName{Ident: l.ConsumeIdentWithLoc()} - f.Directives = common.ParseDirectives(l) - f.Selections = parseSelectionSet(l) - return f -} - -func parseSelectionSet(l *common.Lexer) []Selection { - var sels []Selection - l.ConsumeToken('{') - for l.Peek() != '}' { - sels = append(sels, parseSelection(l)) - } - l.ConsumeToken('}') - return sels -} - -func parseSelection(l *common.Lexer) Selection { - if l.Peek() == '.' { - return parseSpread(l) - } - return parseField(l) -} - -func parseField(l *common.Lexer) *Field { - f := &Field{} - f.Alias = l.ConsumeIdentWithLoc() - f.Name = f.Alias - if l.Peek() == ':' { - l.ConsumeToken(':') - f.Name = l.ConsumeIdentWithLoc() - } - if l.Peek() == '(' { - f.Arguments = common.ParseArguments(l) - } - f.Directives = common.ParseDirectives(l) - if l.Peek() == '{' { - f.SelectionSetLoc = l.Location() - f.Selections = parseSelectionSet(l) - } - return f -} - -func parseSpread(l *common.Lexer) Selection { - loc := l.Location() - l.ConsumeToken('.') - l.ConsumeToken('.') - l.ConsumeToken('.') - - f := &InlineFragment{Loc: loc} - if l.Peek() == scanner.Ident { - ident := l.ConsumeIdentWithLoc() - if ident.Name != "on" { - fs := &FragmentSpread{ - Name: ident, - Loc: loc, - } - fs.Directives = common.ParseDirectives(l) - return fs - } - f.On = common.TypeName{Ident: l.ConsumeIdentWithLoc()} - } - f.Directives = common.ParseDirectives(l) - f.Selections = parseSelectionSet(l) - return f -} - -func (d *Document) GetOperation(operationName string) (*Operation, error) { - if len(d.Operations) == 0 { - return nil, fmt.Errorf("no operations in query document") - } - - if operationName == "" { - if len(d.Operations) > 1 { - return nil, fmt.Errorf("more than one operation in query document and no operation name given") - } - for _, op := range d.Operations { - return op, nil // return the one and only operation - } - } - - op := d.Operations.Get(operationName) - if op == nil { - return nil, fmt.Errorf("no operation with name %q", operationName) - } - return op, nil -} |