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Crystal FLOW
Overview |
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You encounter an error : |
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A structure member is being corrupted somewhere in an unfamiliar function.
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View the function's flowchart. |
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It helps you understand the function quickly.
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It seems the structure member is being corrupted by a called function.
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View the DataFlow of the structure-pointer in the called function
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Go deeper by expanding function-calls in the DataFlow.
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Two levels deep, you find the error.
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DataFlow is a fast and effective tool to track data across many functions. |
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During integration testing, you get an error : |
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A long conditional expression looks suspect.
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| Ordinarily, the expression would be very hard to read.
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With Crystal FLOW' code-formatting, the expression is easy to read. |
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You immediately notice an incorrect sequence of parentheses.
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Crystal's code formatting helps you find the bug easily. |
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A global variable is used in the current function. |
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What other functions use or modify this global variable
before the current function is called?
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| Create the call-tree of main( ) |
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Display the tree-nodes in the order of function-call occurrences. |
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| Use the Rich Tree feature: |
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Display the global variable's name alongside each tree-node that uses it. |
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| In this Rich Tree, you can see: |
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what functions are called before you get to the current function |
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among those, which functions use the global variable in question |
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You are looking at a call-tree and you wish know: |
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a) Which members of a struct are used by the functions in the tree
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Use the Rich Tree feature: |
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the struct members are displayed alongside the functions that use
those struct members.
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b) Which members of a specific instance of struct are used by the functions in the tree
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Use the Rich Tree feature: |
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The members the given struct instance are displayed alongside the functions that use/modify them.
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c) What parameters are required by each function in the call-tree?
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Use the Rich Tree feature: |
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You can see the parameters displayed alongside each-node in the tree.
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| What are all the places where a particular flag is being set or reset? |
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View the list of "Modified Occurences" of that flag |
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Crystal FLOW makes team-review focused and more productive |
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| A high-level function and the call-tree under it |
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| together they perform a set of operations |
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| How do you add a new operation? |
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Use the Rich Tree features: |
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In the call-tree, view the parameters required by each function along a call-sequence
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To examine the use of a specific variable or any structure members in the functions: |
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Use Rich Tree to display the variable or structure members alongside the functions that use them |
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Then view the DataFlow of the variable or the structure member to see how it is used
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With Rich Trees, you can swiftly examine and understand a hierarchy of functions GREP-based browsing is too slow!
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| Identify the data items that will be affected |
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| Examine how those data items are used in the various functions |
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| Plan your code changes |
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Use DataFlow to examine how the data items, #define's etc. are used |
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Your code modifications will be accurate and well planned |
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DataFlow combines the power of GREP, Flowcharts and information filtering into one efficient tool.
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Better tools  better results!
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| Comment Trail Marker |
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Use the Comment Trail Markers to describe a group or subgroup of code modifications |
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Leave a comment trail of the code changes |
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Understand why older changes were made |
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| Understand the source code in advance of the code review |
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Project overview, CallFlow, Rich Trees, Flowcharts... |
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These unique tools will help you understand and gain familiarity with the code in advance of the code-review. |
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The participants do not struggle to understand the code. |
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Code reviews are far more productive! |
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| Partitioning, function overview, etc. |
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Use CallFlow to review partitioning of tasks in a function |
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Use Rich Tree with comments to view the work accomplished by the functions |
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View the File call-tree to view the call relationship among the functions in a file
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| Review detailed logic |
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Use Flowchart to understand the detailed logic of a function |
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Use loop-flowcharts, switch flowcharts to Divide-and-Conquer very long functions in just a few minutes |
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View conditions that need to be true to get to the current line |
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| Generate documentation for a faster and effective review |
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Export CallFlow to HTML for providing an overview |
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Export DataFlows of affected variables to HTML |
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Comment trails for documenting a group or subgroup of code modifications |
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HTML versions of CallFlow, DataFlow as well as Comment Trails make the code-review more productive. |
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Use CallFlow to make a fast attack on main( )
or any high-level function
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Find unused functions |
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You can view the control-flow of main( ) |
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You can view the function-calls of main( ) |
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You dig deeper - expand the function-calls and viewing the source code |
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Using the CallFlow, you can quickly learn about main( ) |
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In no time you can understand the newly acquired code! |
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| Get an overview of the Project |
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You can view the structures/classes in the project |
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You can view the root functions of the project |
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You can view the Project Call-tree |
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Or you can simply attack main( ) |
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Crystal C/C++ provides several ways to know a project |
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You can choose the way you find most convenient! |
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| Explore the call-tree of main( ) |
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You can view the functions called in main( ) |
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You can go to function-calls in the source code |
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You can go to function definitions |
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You can view the call-sequence from main( ) to any node |
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You need to discuss the project design with your team
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Generate HTML documentation for understanding the design |
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Use flowcharts, call-trees, type-information and source code for detailed understanding |
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Use cross-reference to view where objects and functions are used |
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Use code-metrics and volume metrics to view complexity |
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Crystal C/C++ provides the most comprehensive documentation! |
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Your deadlines are fast approaching.
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You need to review the project design with your client
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Generate Online HTML documentation |
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Use the browser to go through documentation and discuss design changes |
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Use the exported flowcharts, CallFlows, trees, etc to understand the code-flow. |
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You accomplish design review without actually transferring code. |
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You beet the deadlines. Your client is happy! |
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Identify unused code and unused variables
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Find unused functions |
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Find unused Global variables |
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Find unused local variables |
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Find unreachable code |
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Find Unused #includes too! |
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Identify the functions that are not used outside their files |
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Make such functions static ! |
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Crystal C/C++ provides smart operations for quick navigation within a file or a project
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With a single click, you can:
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|  Go to the outer indent - say, to the top of the loop. |
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| Skip deeper indents - go to the next case in a switch
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| Go to an object's or function's declaration
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| Go to an object's or function's definition
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| From a [, {, or (, go to the matching ), }, ] and vice versa |
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| From a #if, #ifdef to the matching #else, #endif and vice versa |
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| Go to undeclared objects, unused objects, unmatched delimiters |
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And much more...
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You are planning to use a variable in a new code addition
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You want to see what values are being assigned to it! |
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Click on a button and view modified occurrences of that object. |
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Just by a simple click, you can view where all in the project the variable is being modified! |
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