JPH1011299A - Compiler with delay evaluating function, compiling method, and medium storing compile program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently compile a source program by syntax-analyzing the source program including an instructing sentence instructing for inferring forward whatever syntax analyzing element this instructing sentence is like. SOLUTION: Whether a token, which a token selectively reading part 4 has read from a source file 1, is between the starting position and the finishing position of delaying evaluation or not, is judged by a delay evaluation starting position judging part 5 and a delay evaluation terminating position judging part 6. A token in a section excepting for a delay evaluating section is made an object by an evaluation processing part 9 to be outputted to an object file 10 and a token in the delay evaluating section is stored in a delay evaluating token storing table 2 by a delay evaluation partially storing part 7. After a delay evaluation developing position judging part 8 judges that the read token is a token at a delay evaluation developing position, the reading part 4 reads the token strident in the table 2 to make it an object to output to the file 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compiling apparatus for translating a source program to generate a target program, and more particularly to a delay evaluation for generating a target program by translating a source program which may cause forward reference. The present invention relates to a compiling device with a function, a compiling method, and a medium for storing a compiling program.

[0001]

2. Description of the Related Art "Masataka Sasa, Programming Language Processing System, Iwanami Shoten, Published October 31, 1989"
"Forward reference" and "back patching" are described.

[0002] Forward reference is a method of instructing a statement in a source program to refer to a statement defined later. For example, a label at a jump destination of a goto statement is referred to as the go statement.
This is the case if it is defined after the to statement.

When a source program including a goto statement indicating such forward reference is input in order from the beginning to generate a target program, the jump address of the goto statement must be determined on the spot. Therefore, the position of the goto statement is memorized for the time being, and when the label of the jump destination is actually defined later, a correct address is embedded in the jump destination column of the goto statement that was previously remembered. This method is called back patching.

[0004]

In this conventional back patching method, a label of a goto sentence is processed. In the backpatching method, since the information required by the label of the goto statement is only the defined label position, the syntax analysis can be continued even if the label is undefined.

For example, in the following source program, Even if the label L1 of the goto statement is undefined, a parsing tree can be created by treating all of the goto statements including the label as identifiers as elements of the parsing, so that the parsing processing is continued. can do.

However, in the following source program that does not include a goto statement, Since it is not possible to specify what kind of parsing element T is, a parsing tree cannot be created, and the parsing process cannot be continued when such a command statement appears. There was a problem.

[0007] The object of the present invention is to provide a method for parsing a sentence indicating a forward reference irrespective of the type of parsing element.
It is an object of the present invention to provide a compiling device capable of parsing a source program including the statement and compiling it efficiently.

[0008]

According to a first aspect of the present invention, there is provided a compiling device having a delay evaluation function, comprising: a token selection reading unit for sequentially reading tokens from a token sequence included in a source program; and a token read by the token selection reading unit. Is a token in a delay evaluation section set in advance in an arbitrary section of the token string, a delay evaluation section storage section that stores the token in a delay evaluation token storage table, and a delay evaluation section storage section. An evaluation processing unit for sequentially reading the tokens stored in the delay evaluation token storage table, converting the tokens into objects, and outputting the objects to an object file.

A second compiling device with a delay evaluation function according to the present invention is the compiling device with the first delay evaluation function, wherein the evaluation processing unit further includes a token read by the token selection reading unit. If the token is outside the delay evaluation section set in an arbitrary section of the column, the token is turned into an object and output to an object file.

A third compiling device with a delay evaluation function according to the present invention is the compiling device with the second delay evaluation function, wherein the token read by the token selection reading unit is set in advance at an arbitrary position in the token sequence. A delay evaluation start position determining unit that determines whether or not the token matches the token at the start position of the delayed evaluation, generates an object corresponding to the read token if the match, and outputs the object to an object file; The delay evaluation start position determination unit sequentially reads tokens after the position of the tokenized object, and determines whether or not the token matches the token at the delay evaluation end position set in advance in any part of the token sequence. A delay evaluation end position determination unit for determining, wherein the delay evaluation partial storage unit stores the delay evaluation When the end position determination unit reads a token that matches the token at the end position of the delay evaluation, the delay evaluation end position determination unit returns to a state in which the previously read token can be changed without definition information. It is characterized in that it is evaluated and stored in the delay evaluation token storage table.

The fourth compiling device with a delay evaluation function according to the present invention is the compiling device with the third delay evaluation function, wherein the token read by the token selection reading unit further includes a predetermined delay evaluation developing position. A delay evaluation deployment position determination unit that determines whether or not the token matches the token; and the token selection reading unit determines that the read token matches the token at the delay evaluation deployment position by the delay evaluation deployment position determination unit. Then, the token is read from the delay evaluation token storage table, and the read token is converted into an object by the evaluation processing unit and output to the object file.

In a fifth aspect of the present invention, in the compiling apparatus with a delay evaluation function, the token selecting and reading section may not read a token from the delay evaluation token storage table. In this case, a token is read from the source program.

A first compiling method with a delay evaluation function according to the present invention includes a token selecting and reading step for sequentially reading tokens from a token sequence included in a source program; If the token is within a delay evaluation section set in an arbitrary section of the delay evaluation token storage table, the token is stored in a delay evaluation token storage table. Evaluation processing step of sequentially reading the tokens stored in the object file, converting the tokens into objects, and outputting the objects to an object file.

According to a second compiling method with a delayed evaluation function of the present invention, in the first compiling method with a delayed evaluation function, the evaluation processing step further comprises the step of: If the token is outside the delay evaluation section set in an arbitrary section of the column, the token is turned into an object and output to an object file.

A third compilation method with a delay evaluation function according to the present invention is the compilation method with the second delay evaluation function, wherein the token read by the token selection reading step is previously set at an arbitrary position in the token sequence. A delay evaluation start position determining step of determining whether or not the token matches the token at the start position of the delayed evaluation, generating an object corresponding to the read token if the match is found, and outputting the object to an object file; The delay evaluation start position determination step sequentially reads tokens after the position of the tokenized object, and determines whether or not the token matches the token at the delay evaluation end position set in advance in any part of the token string. Determining a delay evaluation end position determining step; When the delay evaluation end position determination step reads a token that matches the token at the delay evaluation end position, the delay evaluation end position determination step stores the token that has been read so far without definition information. It is characterized in that the state is evaluated up to a state where it can be changed and stored in the delay evaluation token storage table.

A fourth compilation method with a delay evaluation function according to the present invention is the compilation method with the third delay evaluation function, further comprising the step of: A delay evaluation deployment position determination step of determining whether or not the token matches the token; the token selection reading step determines that the read token matches the delay evaluation development position token by the delay evaluation deployment position determination step. Then, the token is read from the delay evaluation token storage table, and the read token is converted into an object in the evaluation processing step and output to the object file.

According to a fifth compilation method with a delay evaluation function of the present invention, in the fourth compilation method with a delay evaluation function, the token selection reading step may further comprise:
If the token cannot be read from the delay evaluation token storage table, the token is read from the source program.

According to a first aspect of the present invention, there is provided a medium comprising: a token selecting and reading step for sequentially reading tokens from a token sequence included in a source program; If the token is within the set delay evaluation section, a delay evaluation partial storage step of storing the token in the delay evaluation token storage table; and a token stored in the delay evaluation token storage table by the delay evaluation partial storage step Are sequentially read, and an evaluation processing step of converting the object into an object and outputting the object to an object file is stored.

In a second medium according to the present invention, in the first medium, the evaluation processing step further includes a step of determining whether the token read by the token selection reading step is a delay evaluation set in advance in an arbitrary section of the token sequence. If the token is outside the section, the token is converted into an object and output to an object file.

A third medium according to the present invention is the second medium, wherein the program further comprises: a program which, when the token is read by the token selection reading step, starts the delay evaluation at a predetermined position in the token sequence. A delay evaluation start position determining step of determining whether or not the token matches the token, and if so, generating an object corresponding to the read token and outputting the object to an object file; and The determining step sequentially reads tokens after the position of the tokenized object and determines whether or not the token matches the token at the ending position of the delay evaluation set in advance in any part of the token sequence. A delay evaluation partial storage step, wherein the delay evaluation end is stored. When the position determination step reads a token that matches the token at the end position of the delay evaluation, the delay evaluation end position determination step evaluates the token so far that the previously read token can be changed without definition information. Stored in the delay evaluation token storage table.

A fourth medium according to the present invention is the third medium, wherein the program further checks whether the token read by the token selection reading step matches a token at a predetermined delay evaluation development position. A delay evaluation deployment position determination step of determining whether the read token matches the token at the delay evaluation deployment position by the delay evaluation deployment position determination step. A token is read from the delay evaluation token storage table, and the read token is converted into an object in the evaluation processing step and output to the object file.

A fifth medium of the present invention is the fourth medium, wherein the token selection reading step further comprises the step of, if the token cannot be read from the delay evaluation token storage table, reading the token from the source program. It is characterized by reading.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described in detail with reference to the drawings.

Referring to FIG. 1, a compiling apparatus with a lazy evaluation function according to a first embodiment of the present invention includes a source file 1 including a source program described in a high-level language in which forward reference may occur, A delay evaluation token storage table 2, a source program analysis unit 3, and an object file 10;
Includes a token selection reading unit 4, a delay evaluation start position determination unit 5, a delay evaluation end position determination unit 6, a delay evaluation partial storage unit 7, a delay evaluation development position determination unit 8, and an evaluation processing unit 9. Including.

The token selection reading unit 4 reads the identifier / literal / character string / reserved word / operator from either the source file 1 or the delay evaluation token storage table 2 according to the control information from the delay evaluation development position determination unit 8. It determines whether to read a lexical element (hereinafter, referred to as a token) such as, and performs a process of reading the token.

The delay evaluation start position judging section 5 judges whether or not to start the delay evaluation based on the type and order of the token string passed from the token selection reading section 4, and judges that the token is the one to start the delay evaluation. In this case, the token is evaluated and necessary objects are output to the object file 10.

The delay evaluation end position determining unit 6 reads a token from the source file 1 and determines whether to end the delay evaluation based on the type and order of the read token string.

The delay evaluation partial storage unit 7 stores the token passed from the delay evaluation end position determination unit 6 in the delay evaluation token storage table 2 after resolving the evaluation up to the portion where the definition information of the token is unnecessary. I do.

The delay evaluation developing position judging section 8 judges whether or not to expand the part to be subjected to delay evaluation based on the type and order of the token string passed from the delay evaluating start position judging section 5 or the delay evaluating end position judging section 6. .

The evaluation processing section 9 evaluates the token passed from the delay evaluation development position determination section 8 and outputs necessary objects to the object file 10.

A compile device with a delay evaluation function according to a first embodiment of the present invention will be described below with reference to FIGS.

FIG. 3 shows an example of a source program described in a virtual high-level language, where the alphabet represents a simple token, <refer Z> represents a token referring to Z, and <def
ineZ> indicates a token defining Z.

FIG. 4 is a timing chart showing how the source program of FIG. 3 is compiled. In FIG. 4, C ′ indicates a token evaluated to a portion where C definition information is unnecessary. The alphabet indicates the object corresponding to each token, and ... indicates that the token follows.

In the example of the source program described in this virtual high-level language, it is assumed that the delay evaluation start position is B, the delay evaluation end position is D, and the delay evaluation development position is G.

Now, the initial state of the source file 1 is shown in FIG.
Assume that (1).

In the initial state, the token reading unit 4
Performs the reading process of the A token from the source file 1 and sends the A token to the delay evaluation start position determining unit 5 (step S1, step S2, and step S2).
4).

The delay evaluation start position judging unit 5 judges that the A token is not the delay evaluation start position, and sends the A token to the delay evaluation development position judging unit 8 (Step S).
6).

The delay evaluation development position determination unit 8 determines that the A token is not the delay evaluation development position, and sends the A token to the evaluation processing unit 9 (step S12).

The evaluation processing unit 9 receives the A token,
An object corresponding to the A token is generated and output to the object file 10 (Step S14).

FIG. 4B shows this state.

Next, the token reading unit 4 reads the B token from the source file 1 and sends the B token to the delay evaluation start position determining unit 5 (step S).
1, Step S2, and Step S4).

The delay evaluation start position judging section 5 judges that the B token is the delay evaluation start position, evaluates the B token, generates a necessary object, and outputs it to the object file 10 (step). S6, and step S7).

The delay evaluation end position determining unit 6 reads the <refer Z> token from the source file 1,
It is determined that the <refer Z> token is not at the delay evaluation end position, and the <refer Z> token is stored in the delay evaluation partial storage unit 7.
(Step S8 and Step 9).

The delay evaluation partial storage unit 7 determines that the <refer Z> token cannot be converted without definition information, and stores the <refer Z> token as it is in the delay evaluation token storage table 2. It is stored (step S10 and step S11).

This state is shown in FIG.

Next, the delay evaluation end position determining section 6 reads the C token from the source file 1 and determines that the C token is not the delay evaluation end position.
The C token is sent to the delay evaluation partial storage unit 7 (steps S8 and S9).

The delay evaluation partial storage unit 7 determines that the C token is a token that can be changed to a C ′ token without definition information, and stores the C ′ token in the delay evaluation token storage table 2 ( Step S10 and step S11). Here, it is a feature of the present invention that the C token is changed to a C 'token that has been evaluated to a state where it can be changed without definition information, and then stored in the delay evaluation token storage table 2.

FIG. 4D shows this state.

Next, the delay evaluation terminal position determining unit 6 reads the D token from the source file 1 and determines that the D token is the delay evaluation terminal position.
The D token is sent to the delay evaluation developed position determination unit 8 (Step S8 and Step S9).

The delay evaluation development position determination unit 8 determines that the D token is not at the delay evaluation development position, and sends the D token to the evaluation processing unit 9 (step S12).

The evaluation processing unit 9 receives the D token,
An object corresponding to the D token is generated and output to the object file 10 (Step S14).

FIG. 4 (5) shows this state.

Next, the token selection reading unit 4 sequentially reads E, <define Z>, and F tokens from the source file 1 and stores the E, <define Z>, and F tokens respectively in the delay evaluation start position determination unit. 5 (step S1,
Step S2 and step S4).

The delay evaluation start position judging section 5 sets E, <defin
It is determined that the eZ> and F tokens are not the delay evaluation start positions, and the E, <define Z> and F tokens are sent to the delay evaluation development position determination unit 8 (step S6).

The delay evaluation development position determination unit 8 calculates E, <defin
It is determined that the eZ> and F tokens are not at the delay evaluation development position, and the E, <define Z> and F tokens are sent to the evaluation processing unit 9 (step S12).

The evaluation processing unit 9 receives the E, <define Z>, and F tokens, generates objects corresponding to the E, <define Z>, and F tokens, and outputs the objects to the object file 10 (step S14). ).

This state is shown in FIG.

Next, the token selection reading section 4 reads G tokens from the source file 1 and
The token is sent to the delay evaluation start position determination unit 5 (Step S1, Step S2, and Step S4).

The delay evaluation start position judging section 5 judges that the G token is not the delay evaluation start position, and sends the G token to the delay evaluation development position judging section 8 (Step S).
6).

The delay evaluation development position determination unit 8 determines that the G token is the delay evaluation development position, and sends the G token to the evaluation processing unit 9. At the same time, it sends control information to the token selection reading unit 4 that future token reading processing will be performed from the delay evaluation token storage table 2 (steps S12 and S13).

The evaluation processing unit 9 receives the G token,
An object corresponding to the G token is generated and output to the object file 10 (Step S14).

This state is shown in FIG.

Next, the token selection reading section 4 sequentially reads <refer Z> and C ′ tokens from the delay evaluation token storage table 2 and determines the <refer Z> and C ′ tokens respectively as the delay evaluation start position determination. It is sent to the unit 5 (step S1, step S3, and step S5).

The delay evaluation start position judging section 5 sets the <refer Z>
, C ′ tokens are not at the delay evaluation start position, and the <refer Z> and C ′ tokens are sent to the delay evaluation development position determination unit 8 (step S6).

The delay evaluation developing position determination unit 8 sets the <refer Z>
, And C ′ tokens are not at the delay evaluation development position, and sends the <refer Z> and C ′ tokens to the evaluation processing unit 9 (step S12).

The evaluation processing unit 9 receives the <refer Z> and C ′ tokens, generates an object corresponding to the <refer Z> and C ′ tokens, and outputs the object to the object file 10 (step S14).

This state is shown in FIG.

Next, the token selection reading unit 4 attempts to read a token from the delay evaluation token storage table 2, but determines that there is no more token, and determines that the token reading process will be performed from the source file 1 in the future. Send. Then, an H token is read from the source file 1, and the H token is sent to the delay evaluation start position determination unit 5 (steps S1, S3,
Step S15, step S2, and step S
4).

The delay evaluation start position determining section 5 determines that the H token is not the delay evaluation start position, and sends the H token to the delay evaluation development position determining section 8 (step S).
6).

The delay evaluation development position determination unit 8 determines that the H token is not the delay evaluation development position, and sends the H token to the evaluation processing unit 9 (step S12).

The evaluation processing unit 9 receives the H token,
An object corresponding to the H token is generated and output to the object file 10 (step S14).

This state is shown in FIG.

With the above, the processing of the compiling device with a delay evaluation function according to the first embodiment of the present invention is completed.

In the compiling device with a delay evaluation function according to the first embodiment of the present invention, the source program analyzing unit 3
It includes a token selection reading unit 4, a delay evaluation start position determining unit 5, a delay evaluation end position determining unit 6, a delay evaluation partial storage unit 7, a delay evaluation developing position determining unit 8, and an evaluation processing unit 9, and includes a forward reference. By storing a part of the source program 1 described in a high-level language where the execution of the source program 1 is likely to be performed as a delay evaluation part and expanding the delay evaluation part at a necessary place, the scanning in the compilation processing of the source program can be performed. By performing the processing once, the compile process can be executed at high speed.

As shown in FIG. 5, in a compiling device with a delay evaluation function according to another embodiment of the present invention, the processing order of the delay evaluation development position determination unit 8 and the delay evaluation start position determination unit 4 is switched. Alternatively, the delay evaluation token storage table 2 can be replaced with the delay evaluation token storage file 11 as shown in FIG.

[0076]

As described above, in the compiling apparatus with the delay evaluation function, the compiling method, and the medium for storing the compiling program according to the present invention, what kind of parsing element is a statement for designating a forward reference. Parse the source program containing the statement,
This has the effect of being able to compile efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a compiling device with a delay evaluation function according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a source program analysis unit 3, a token selection reading unit 4, a delay evaluation start position determination unit 5, a delay evaluation end position determination unit 6, and a delay evaluation partial storage unit according to the first embodiment of the present invention. 7 is a flowchart showing processing of a delay evaluation development position determination unit 8 and an evaluation processing unit 9;

FIG. 3 is a diagram showing a source program described in a virtual high-level language according to the first embodiment of the present invention.

FIG. 4 is a timing chart showing how a source program is compiled in the first embodiment.

FIG. 5 is a block diagram showing a configuration of a compiling device with a delay evaluation function according to another embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a compiling device with a delay evaluation function according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Source file 2 Delay evaluation token storage table 3 Source program analysis unit 4 Token selection reading unit 5 Delay evaluation start position determination unit 6 Delay evaluation end position determination unit 7 Delay evaluation partial storage unit 8 Delay evaluation development position determination unit 9 Evaluation processing unit 10 Object file 11 Delay evaluation token storage file

Claims (15)

[Claims] A token selection reading unit for sequentially reading tokens from a token sequence included in a source program; and a token read by the token selection reading unit,
If the token is within a delay evaluation section set in advance in an arbitrary section of the token string, a delay evaluation section storage section that stores the token in a delay evaluation token storage table; A compiling device having a delay evaluation function, comprising: an evaluation processing unit that sequentially reads tokens stored in an evaluation token storage table, converts the tokens into objects, and outputs the objects to an object file. 2. The evaluation processing unit further includes: if the token read by the token selection reading unit is a token outside a delay evaluation section set in advance in an arbitrary section of the token sequence, 2. The compiling device with a delay evaluation function according to claim 1, wherein the compiling device outputs the object to an object file. Further, it is determined whether or not the token read by the token selection reading unit matches the token at the start position of the delay evaluation previously set at an arbitrary position in the token string. A delay evaluation start position determining unit that generates an object corresponding to the read token and outputs the object to an object file; and sequentially reads tokens after the position of the tokenized object by the delay evaluation start position determining unit from the source program. A delay evaluation end position determining unit that determines whether or not the token matches a token at a delay evaluation end position set in advance in an arbitrary part of the token sequence. The delay evaluation partial storage unit includes: When the end position determination unit reads a token that matches the token at the end position of the delay evaluation, 3. The delay evaluation function according to claim 2, wherein the evaluation end position determination unit evaluates the token read so far until the token can be changed without definition information and stores the token in the delay evaluation token storage table. Compiling device with. 4. A delay evaluation deployment position determination unit that determines whether a token read by the token selection read unit matches a token at a preset delay evaluation deployment position, The unit reads the token from the delay evaluation token storage table when it is determined by the delay evaluation expansion position determination unit that the read token matches the token at the expansion position of the delay evaluation, and performs the evaluation processing on the read token. 4. The compiling device with a delay evaluation function according to claim 3, wherein the compiling device converts the object into an object and outputs the object file to the object file. 5. The delay evaluation unit according to claim 4, wherein the token selection reading unit reads a token from the source program when the token cannot be read from the delay evaluation token storage table. Compiler with functions. 6. A token selecting and reading step for sequentially reading tokens from a token string included in a source program, wherein the token read by the token selecting and reading step is a delay evaluation section set in advance in an arbitrary section of the token string. In the case of a token, a delay evaluation partial storage step of storing the token in a delay evaluation token storage table, and a token stored in the delay evaluation token storage table by the delay evaluation partial storage step are sequentially read and converted into an object. A compiling method with a delayed evaluation function, comprising: an evaluation processing step of outputting to an object file. 7. The evaluation processing step further includes, if the token read by the token selection reading step is a token outside a delay evaluation section set in advance in an arbitrary section of the token string, 7. The compiling method with a delay evaluation function according to claim 6, wherein the compiling method outputs the object to an object file. Further, it is determined whether or not the token read by the token selection reading step matches a token at a delay evaluation start position set in advance in an arbitrary part of the token string. A delay evaluation start position determining step of generating an object corresponding to the read token and outputting the generated object to an object file; and sequentially reading tokens after the position of the tokenized object in the delay evaluation start position determining step from the source program. A delay evaluation end position determining step of determining whether or not a token matches a token at a delay evaluation end position set in advance in an arbitrary position of the token sequence, wherein the delay evaluation partial storage step includes: End position judgment step matches the token at the end position of the delay evaluation At the time of reading the token, the delay evaluation end position determining step evaluates the token read so far to a state where it can be changed without definition information and stores the token in the delay evaluation token storage table. 8. The compiling method with a delay evaluation function according to claim 7. 9. The method further comprises the step of determining whether or not the token read by the token selection reading step matches a token at a predetermined delay evaluation expansion position. The step is, when it is determined that the read token matches the token at the delay evaluation deployment position by the delay evaluation deployment position determination step,
9. The compiling method according to claim 8, further comprising reading a token from the delay evaluation token storage table, converting the read token into an object in the evaluation processing step, and outputting the object to the object file. 10. The delay evaluation according to claim 9, wherein the token selection reading step reads a token from the source program when a token cannot be read from the delay evaluation token storage table. Compile method with functions. 11. A token selecting and reading step for sequentially reading tokens from a token string included in a source program, and the token read by the token selecting and reading step is set in a delay evaluation section set in advance in an arbitrary section of the token string. In the case of a token, a delay evaluation partial storage step of storing the token in a delay evaluation token storage table, and a token stored in the delay evaluation token storage table by the delay evaluation partial storage step are sequentially read and converted into an object. A medium that stores a program that causes a computer to perform processing including an evaluation processing step of outputting to an object file. 12. The evaluation processing step further includes the step of, if the token read by the token selection reading step is a token outside a delay evaluation section previously set in an arbitrary section of the token string, The medium according to claim 11, wherein the medium is converted into an object and output to an object file. 13. The program further determines whether or not the token read by the token selection reading step matches a token at a delay evaluation start position set in advance at an arbitrary position in the token sequence. In this case, an object corresponding to the read token is generated, and a delay evaluation start position determining step of outputting the object to an object file; Sequentially reading, and a delay evaluation end position determining step of determining whether or not the token matches a token at a delay evaluation end position set in advance in an arbitrary position of the token sequence. Wherein the delay evaluation end position determination step is the end of the delay evaluation. When the token that matches the token of the position is read, the delay evaluation end position determining step evaluates the token that has been read so far until it can be changed without the definition information, and stores the token in the delay evaluation token storage table. 13. The medium according to claim 12, wherein the medium is stored. 14. The program further includes a delay evaluation developing position determining step of determining whether the token read by the token selecting reading step matches a token at a predetermined delay evaluating developing position, The token selection reading step, if it is determined that the read token matches the token of the deployment position of the delay evaluation by the delay evaluation deployment position determination step,
14. The medium according to claim 13, wherein a token is read from the delay evaluation token storage table, and the read token is converted into an object in the evaluation processing step and output to the object file. 15. The medium according to claim 14, wherein the token selection reading step reads the token from the source program when the token cannot be read from the delay evaluation token storage table.