FILE CONVERSION DEVICE, FILE CONVERSION METHOD, AND FILE CONVERSION PROGRAM

• US 20100287540A1
• Filed: 05/04/2010
• Published: 11/11/2010
• Est. Priority Date: 05/11/2009
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: TAKAI, SHINJI
• Granted Patent: US 8,640,111 B2
• Time in Patent Office: Days
• US Class Current: 717/137
• CPC Class Codes: G06F 8/51 Source to source
• CPC Class Codes: G06F 9/45512 Command shells

Abstract

Provided is a file conversion device which converts a file form written in a given language to a file form that can be interpreted by another language, which includes: a file readout device which reads description contents of an inputted file by each line, and manages the description contents by adding an index to each line of the read description contents; a syntax tree creating device which converts the description contents into a syntax tree of a tree structure based on the indexes through linearly scanning the indexes of the file managed by the file readout device; a syntax tree optimizing device which optimizes the tree structure of the syntax tree as a flowchart according to an optimization rule; and a file dividing device which divides the inputted file by having controllers in the flowchart optimized by the syntax tree optimizing device as identifiers.

Claims

1. A file conversion device which converts a file form written in a given language to a file form that can be interpreted by another language, the device comprising:

a file readout device which reads description contents of an inputted file by each line, and manages the description contents by adding an index to each line of the read description contents;

a syntax tree creating device which converts the description contents into a syntax tree of a tree structure based on the indexes through linearly scanning the indexes of the file managed by the file readout device;

a syntax tree optimizing device which optimizes the tree structure of the syntax tree as a flowchart according to an optimization rule; and

a file dividing device which divides the inputted file by having controllers in the flowchart optimized by the syntax tree optimizing device as identifiers.

2. The file conversion device as claimed in claim 1, further comprising an actual processing line conversion section which converts a language of an actual processing description written in the files divided by the file dividing device into a command interpreter language.

3. The file conversion device as claim in claim 1, wherein the file dividing device further outputs the flowchart that is obtained by optimizing the tree structure of the syntax tree in addition to outputting the divided files.

4. The file conversion device as claim in claim 1, wherein the syntax tree optimizing device optimizes the syntax tree as the flowchart of a network form in which a start point and an end point are fixed.

5. A file conversion method for converting a file form written in a given language to a file form that can be interpreted by another language, the method comprising:

reading description contents of an inputted file by each line, and managing the description contents by adding an index to each line of the read description contents;

converting the description contents into a syntax tree of a tree structure based on the indexes through linearly scanning the indexes of the managed file;

optimizing the tree structure of the syntax tree as a flowchart according to an optimization rule; and

dividing the inputted file by having controllers in the flowchart as identifiers.

6. The file conversion method as claimed in claim 5, further comprising:

converting a language of an actual processing description written in the divided files into a command interpreter language.

7. The file conversion method as claim in claim 5, further comprising:

outputting the flowchart that is obtained by optimizing the tree structure of the syntax tree in addition to outputting the divided files.

8. The file conversion method as claim in claim 5, wherein the syntax tree is optimized as the flowchart of a network form in which a start point and an end point are fixed.

9. A file conversion device which converts a file form written in a given language to a file form that can be interpreted by another language, the device comprising:

file readout device means for reading description contents of an inputted file by each line, and managing the description contents by adding an index to each line of the read description contents;

syntax tree creating means for converting the description contents into a syntax tree of a tree structure based on the indexes through linearly scanning the indexes of the file managed by the file readout device;

syntax tree optimizing means for optimizing the tree structure of the syntax tree as a flowchart according to an optimization rule; and

file dividing means for dividing the inputted file by having controllers in the flowchart optimized by the syntax tree optimizing device as identifiers.