platform/lib/visitor.dart
2017-07-04 15:27:47 -04:00

125 lines
3.5 KiB
Dart

import 'graphql_parser.dart';
class GraphQLVisitor {
visitDocument(DocumentContext ctx) {
ctx.definitions.forEach(visitDefinition);
}
visitDefinition(DefinitionContext ctx) {
if (ctx is OperationDefinitionContext)
visitOperationDefinition(ctx);
else if (ctx is FragmentDefinitionContext) visitFragmentDefinition(ctx);
}
visitOperationDefinition(OperationDefinitionContext ctx) {
if (ctx.variableDefinitions != null)
visitVariableDefinitions(ctx.variableDefinitions);
ctx.directives.forEach(visitDirective);
visitSelectionSet(ctx.selectionSet);
}
visitFragmentDefinition(FragmentDefinitionContext ctx) {
visitTypeCondition(ctx.typeCondition);
ctx.directives.forEach(visitDirective);
visitSelectionSet(ctx.selectionSet);
}
visitSelectionSet(SelectionSetContext ctx) {
ctx.selections.forEach(visitSelection);
}
visitSelection(SelectionContext ctx) {
if (ctx.field != null) visitField(ctx.field);
if (ctx.fragmentSpread != null) visitFragmentSpread(ctx.fragmentSpread);
if (ctx.inlineFragment != null) visitInlineFragment(ctx.inlineFragment);
}
visitInlineFragment(InlineFragmentContext ctx) {
visitTypeCondition(ctx.typeCondition);
ctx.directives.forEach(visitDirective);
visitSelectionSet(ctx.selectionSet);
}
visitFragmentSpread(FragmentSpreadContext ctx) {
ctx.directives.forEach(visitDirective);
}
visitField(FieldContext ctx) {
visitFieldName(ctx.fieldName);
ctx.arguments.forEach(visitArgument);
ctx.directives.forEach(visitDirective);
if (ctx.selectionSet != null) ;
visitSelectionSet(ctx.selectionSet);
}
visitFieldName(FieldNameContext ctx) {
if (ctx.alias != null) visitAlias(ctx.alias);
}
visitAlias(AliasContext ctx) {}
visitDirective(DirectiveContext ctx) {
if (ctx.valueOrVariable != null) visitValueOrVariable(ctx.valueOrVariable);
if (ctx.argument != null) visitArgument(ctx.argument);
}
visitArgument(ArgumentContext ctx) {
visitValueOrVariable(ctx.valueOrVariable);
}
visitVariableDefinitions(VariableDefinitionsContext ctx) {
ctx.variableDefinitions.forEach(visitVariableDefinition);
}
visitVariableDefinition(VariableDefinitionContext ctx) {
visitVariable(ctx.variable);
visitType(ctx.type);
if (ctx.defaultValue != null) visitDefaultValue(ctx.defaultValue);
}
visitVariable(VariableContext ctx) {}
visitValueOrVariable(ValueOrVariableContext ctx) {
if (ctx.variable != null) visitVariable(ctx.variable);
if (ctx.value != null) visitValue(ctx.value);
}
visitDefaultValue(DefaultValueContext ctx) {
visitValue(ctx.value);
}
visitValue(ValueContext ctx) {
if (ctx is StringValueContext)
visitStringValue(ctx);
else if (ctx is NumberValueContext)
visitNumberValue(ctx);
else if (ctx is BooleanValueContext)
visitBooleanValue(ctx);
else if (ctx is ArrayValueContext) visitArrayValue(ctx);
}
visitStringValue(StringValueContext ctx) {}
visitBooleanValue(BooleanValueContext ctx) {}
visitNumberValue(NumberValueContext ctx) {}
visitArrayValue(ArrayValueContext ctx) {
ctx.values.forEach(visitValue);
}
visitTypeCondition(TypeConditionContext ctx) {
visitTypeName(ctx.typeName);
}
visitType(TypeContext ctx) {
if (ctx.typeName != null) visitTypeName(ctx.typeName);
if (ctx.listType != null) visitListType(ctx.listType);
}
visitListType(ListTypeContext ctx) {
visitType(ctx.type);
}
visitTypeName(TypeNameContext ctx) {}
}