+++ /dev/null
-#ifndef __DALI_JSON_PARSE_STATE_H__
-#define __DALI_JSON_PARSE_STATE_H__
-
-//
-// Copyright (c) 2014 Samsung Electronics Co., Ltd.
-//
-// Licensed under the Flora License, Version 1.0 (the License);
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://floralicense.org/license/
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an AS IS BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-#include <dali/public-api/common/dali-common.h>
-
-#include <dali-toolkit/public-api/builder/tree-node.h>
-
-#include <dali-toolkit/internal/builder/tree-node-manipulator.h>
-
-namespace Dali DALI_IMPORT_API
-{
-
-namespace Toolkit
-{
-
-namespace Internal DALI_INTERNAL
-{
-
-/*
- * A safer std::advance()
- */
-template <typename IteratorType,typename EndIteratorType>
-inline int AdvanceIter(IteratorType& iter, EndIteratorType& end, int n)
-{
- for(int i =0; i < n; ++i)
- {
- if(iter == end)
- {
- return n - i;
- }
- ++iter;
- }
- return n;
-}
-
-/*
- * Maintains parser state machine
- *
- * If a NULL root node is passed in the constructor then a faster non merging parse is performed (the first pass).
- * Otherwise the json tree is merged (and requires slower searching)
- */
-class JsonParserState
-{
-public:
- /*
- * Constructor
- * @param tree Tree to start with, pass NULL if no existing tree
- */
- explicit JsonParserState(TreeNode* tree);
-
- /*
- * Parse json source
- * The source is modified in place
- * @param source The vector buffer to parse
- * @return true if parsed successfully
- */
- bool ParseJson(VectorChar& source);
-
- /*
- * Get the root node
- * @return The root TreeNode
- */
- TreeNode* GetRoot();
-
- /*
- * Get the error description of the last parse
- * @return The error description or NULL if no error
- */
- const char* GetErrorDescription() { return mErrorDescription; }
-
- /*
- * Get the error line number
- * @return The line number of the error
- */
- int GetErrorLineNumber() { return mErrorNewLine; }
-
- /*
- * Get the error column
- * @return The error column
- */
- int GetErrorColumn() { return mErrorColumn; }
-
- /*
- * Get the error position
- * @return The error position
- */
- int GetErrorPosition() { return mErrorPosition; }
-
- /*
- * Get the size of the string data that has been parsed
- * @return The size of string data
- */
- int GetParsedStringSize() { return mNumberOfParsedChars; };
-
- /*
- * Get the number of nodes created
- * @return The number of nodes
- */
- int GetCreatedNodeCount() { return mNumberOfCreatedNodes; };
-
-private:
- VectorCharIter mIter; ///< Current position
- VectorCharIter mStart; ///< Start position
- VectorCharIter mEnd; ///< End of buffer being parsed
- TreeNode* mRoot; ///< Root node created
- TreeNodeManipulator mCurrent; ///< The Current modifiable node
- const char* mErrorDescription; ///< The error description if set
- int mErrorNewLine; ///< The error line number
- int mErrorColumn; ///< The error column
- int mErrorPosition; ///< The error position
- int mNumberOfParsedChars; ///< The size of string data
- int mNumberOfCreatedNodes; ///< The number of nodes created
- bool mFirstParse; ///< Flag if first parse
-
- /*
- * The current parse state
- */
- enum State
- {
- STATE_START,
- STATE_OBJECT,
- STATE_KEY,
- STATE_VALUE,
- STATE_END,
- };
-
- State mState;
-
- // inhibited copy construct and assignment
- JsonParserState(const JsonParserState&);
- const JsonParserState& operator=(const JsonParserState&);
-
- /*
- * Parse over white space
- * Increments the current position
- * @return true if no parse errors
- */
- bool ParseWhiteSpace();
-
- /*
- * Parse over a number, setting the current node if found
- * Increments the current position. Sets error data if parse error.
- * @return true if found, false if parse error
- */
- bool ParseNumber();
-
- /*
- * Parse over a symbol
- * Increments the current position. Sets error data if parse error.
- * @return true if found, false if parse error
- */
- bool ParseSymbol(const std::string& symbol);
-
- /*
- * Parse over 'true' symbol, setting the current node if found
- * Increments the current position. Sets error data if parse error.
- * @return true if found, false if parse error
- */
- bool ParseTrue();
-
- /*
- * Parse over 'false' symbol, setting the current node if found
- * Increments the current position. Sets error data if parse error.
- * @return true if found, false if parse error
- */
- bool ParseFalse();
-
- /*
- * Parse over 'null' symbol, setting the current node if found
- * Increments the current position. Sets error data if parse error.
- * @return true if found, false if parse error
- */
- bool ParseNULL();
-
- /*
- * Parse over a string from the current position and insert escaped
- * control characters in place in the string and a null terminator.
- * This function works from and modifes the current buffer position.
- * @return the start of the null terminated string
- */
- char* EncodeString();
-
- /*
- * Create a new node with name and type
- */
- TreeNode* CreateNewNode(const char* name, TreeNode::NodeType type);
-
- /*
- * Create a new node if first parse, else check if the node already
- * exists and set it to a new type
- */
- TreeNode* NewNode(const char* name, TreeNode::NodeType type);
-
- /*
- * Set error meta data
- * @returns always false.
- */
- bool Error(const char* description);
-
- /*
- * Reset state for another parse
- */
- void Reset();
-
- /*
- * Set current to its parent
- * @return true if we had a parent, false and error otherwise
- */
- inline bool UpToParent()
- {
- if(NULL == mCurrent.GetParent())
- {
- return Error("Attempt to walk up above root");
- }
- mCurrent = TreeNodeManipulator( mCurrent.GetParent() );
- return true;
- }
-
- /*
- * Get the current character
- */
- inline char Char()
- {
- return *mIter;
- }
-
- /*
- * @return True if there are at least n character left
- */
- inline bool AtLeast(int n)
- {
- // The standard suggests vector.end() can be decremented as
- // iter v.back() { *--v.end() }
- // (ISO/IEC 14882:2003 C++ Standard 23.1.1/12 – Sequences)
- return (mEnd - mIter) > n;
- }
-
- /*
- * @return True if at the end of the data to parse
- */
- inline bool AtEnd()
- {
- return mEnd == mIter;
- }
-
- /*
- * Advance current position by n characters or stop at mEnd
- */
- inline void Advance(int n)
- {
- int c = AdvanceIter(mIter, mEnd, n);
- mErrorPosition += c;
- mErrorColumn += c;
- }
-
- /*
- * Advance by n charaters and return true if we reached the end
- */
- inline bool AdvanceEnded(int n)
- {
- int c = AdvanceIter(mIter, mEnd, n);
- mErrorPosition += c;
- mErrorColumn += c;
- return mEnd == mIter;
- }
-
- /*
- * Advance by at least n characters (stopping at mEnd) and skip any whitespace after n.
- */
- inline void AdvanceSkipWhiteSpace(int n)
- {
- int c = AdvanceIter(mIter, mEnd, n);
- mErrorPosition += c;
- mErrorColumn += c;
- static_cast<void>( ParseWhiteSpace() );
- }
-
- /*
- * Increment new line counters
- */
- inline void NewLine()
- {
- ++mErrorNewLine;
- mErrorColumn = 0;
- }
-
-};
-
-
-} // namespace Internal
-
-} // namespace Toolkit
-
-} // namespace Dali
-
-
-#endif // header
projects / platform / core / uifw / dali-toolkit.git / blobdiff