Intermediate representation for multiple exception handling models

A system for implementing source language independent exception handling intermediate representations for multiple source code languages, the system comprising:

• an intermediate language reader, implemented at least in part by a computing device of the system, for obtaining an intermediate language representation of a source code file and generating a source language independent intermediate representation of exception handling constructs of the source code based on the intermediate language representation;
• wherein the source language independent intermediate representation explicitly expresses exception handling control flow of the source code;
• wherein the source language independent intermediate representation of the exception handling constructs comprises a first instruction for expressing explicit transfer of control to a finalization code block, a second instruction for expressing acceptance of control transfer into the finalization code block, and a third instruction for expressing transfer of control out of the finalization code block;
• wherein the third instruction for expressing transfer of control out of the finalization code block comprises fields for indicating different continuations for control transfer out of the finalization code block based on whether entry into the finalization code block was explicit or due to an exception, wherein the continuation for control transfer out of the finalization code block after an explicit entry matches a continuation specified by the first instruction.

A system for implementing source language independent exception handling intermediate representations for multiple source code languages, the system comprising:

• an intermediate language reader, implemented at least in part by a computing device of the system, for obtaining an intermediate language representation of a source code file and generating a source language independent intermediate representation of exception handling constructs of the source code based on the intermediate language representation;
• wherein the source language independent intermediate representation explicitly expresses exception handling control flow of the source code;
• wherein the generating comprises:
• reading an intermediate language code stream and associated exception handling clauses from the intermediate language representation of the source code file;
• based at least in part on the exception handling clauses, determining containment relationships between protected code blocks and their associated exception handler blocks;
• based on the containment relationships, assigning distinctive labels to the exception handler blocks;
• based on the assignments, mapping the distinctive labels to their associated protected code blocks and exception handler blocks;
• and
• building the source language independent intermediate representation using, at least in part, a set of source language independent exception handling instructions and the mappings.