Hitachi, Ltd.

Yoshinori Kishimoto

Atsushi Tanaka

Koichi Yamano

Takeshi Chusho

A plurality of program components, which do not have matching interfaces, are combined together automatically to generate a larger new program. An interface specifications' database registers the interface specifications corresponding to each of the program components. A program transformation rule memory stores transformation rules for controlling the reconciliation of the non-matching interface specifications of the program components. A data type memory stores data type transformation rules for reconciling non matching data specifications. A mediating program generator detects a mismatch of the interface specifications between at least two program components which are being combined and generates a mediating program in accordance with the program transformation rule and the data type transformation rule which mediating program enables the two programs and their data to communicate. A components composer generates the larger new program from the program components in the program components' database and the generated mediating program.

Program synthesizing method and apparatus

The system providing a guidance for the command entry to an interactive computer recognizes the hierarchical rank of productions and displays command explanatory messages below the rank of production to which the command in need of explanation belongs. Displaying commands of one or two ranks relieves the operator from the annoyance of useless display reading.

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Kawasaki, Japan

Yoshinori Kishimoto