CN112506521A - High-order calling code generation method and device oriented to data flow model - Google Patents
High-order calling code generation method and device oriented to data flow model Download PDFInfo
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Abstract
The invention discloses a high-order calling code generation method and device for a data flow model. The method comprises the following steps: analyzing a calculation module in the data stream to obtain an analysis result of the calculation module; determining whether the calculation module is a sub-module calling module or not according to the analysis result; under the condition that the calculation module is a sub-module calling module or a non-sub-module calling module and the calculation module is a matrix function operation module, determining the size relation between the array dimension corresponding to the calculation module and the preset maximum expansion times; under the condition that the array dimension is larger than the maximum expansion times, performing function calling based on a circular calling mode to generate a high-order calling code corresponding to the calculation module; and under the condition that the array dimension is smaller than the maximum expansion times, expanding a calling function according to the array dimension, and generating a high-order calling code corresponding to the calculation module. The invention can simplify the generated code and generate a simple code which is in line with the check of the user.
Description
Technical Field
The invention relates to the technical field of code generation based on models, in particular to a high-order calling code generation method and device oriented to a data flow model.
Background
When building a model, the common module calling condition is that the actual parameters are matched with the form parameter types. When the real parameters are not matched with the parameter types, if the order of the real parameters is higher and meets the requirement that the real parameters are expanded into a low order, the real parameters are still called by a legal model module, and the calling is defined as follows:
the type of the called module is set as follows: t isn←m(T1,T2,...,Tn-1)
Wherein, the type of the return value, T1,T2,...,TnIndicating the type of parameter.
Let the calling expression be: r ═ m (e)1,e2,...,en-1)
r and e1,e2,...,en-1The types of the (B) are respectively: sn,S1,S2,...,Sn-1。
The following relationship holds:
this is considered a legitimate type of module call.
Wherein: t isi＝SiThe same type of representation, Ti＝deorder(SiJ) represents the same type after order reduction
Let T ═ int [3] [4], then order (T,1) ═ int [4], order (T,2) ═ int.
That is, for the two-dimensional array, two order reduction operations are allowed to be performed, and a one-dimensional array and a scalar are obtained respectively.
The code is generated in the calling mode, and the calling mode comprises two modes. In the code generated by the first mode, function calling is carried out successively according to each specific value of the actual parameter, when the dimension of the actual parameter is small, the generated function calling code is simple and good in readability, and if the dimension of the actual parameter is large, the generated function calling code is too many, so that readability is poor; and in the codes generated by the second mode, function calling is carried out in a circular calling mode according to the dimension difference of the real parameter and the geometric parameter, and the time complexity and the space complexity of the generated codes are higher than those of the codes generated by the first mode when the real parameter dimension is small.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, and a high-order calling code generation method and device facing to a data stream model are provided.
In order to solve the above technical problem, an embodiment of the present invention provides a method for generating a high-order calling code oriented to a data stream model, including:
analyzing a calculation module in the data stream to obtain an analysis result of the calculation module;
determining whether the computing module is a sub-module calling module or not according to the analysis result;
under the condition that the calculation module is a sub-module calling module or a non-sub-module calling module and the calculation module is a matrix function operation module, determining the size relation between the array dimension corresponding to the calculation module and the preset maximum expansion times;
under the condition that the array dimension is larger than the maximum expansion times, performing function calling based on a circular calling mode to generate a high-order calling code corresponding to the calculation module;
and under the condition that the array dimension is smaller than the maximum expansion times, expanding a calling function according to the array dimension, and generating a high-order calling code corresponding to the calculation module.
Optionally, before the analyzing the calculation module in the data stream to obtain the analysis result of the calculation module, the method further includes:
acquiring the maximum expansion times set by service personnel.
Optionally, before the determining a size relationship between the array dimension corresponding to the calculation module and a preset maximum expansion number, the method further includes:
acquiring the form parameter type of the calculation module and the actual parameter type of the calculation module according to the analysis result;
determining the calculation module as a one-dimensional high-order calling module under the condition that the form parameter type is a basic data type and the actual parameter type is a one-dimensional array;
and determining the calculation module as a second-order high-order calling module under the condition that the form parameter type is a one-dimensional array and the actual parameter type is two-dimensional data.
Optionally, after determining whether the computing module is a sub-module calling module according to the parsing result, the method further includes:
under the condition that the computing module is a non-sub-module calling module, determining whether the computing module is a matrix function operation module or not according to the analysis result;
under the condition that the calculation module is a matrix function operation module, executing the step of determining the size relation between the array dimension corresponding to the calculation module and the preset maximum expansion times;
and under the condition that the calculation module is a non-matrix function operation module, directly generating a module code corresponding to the calculation module.
In order to solve the above technical problem, an embodiment of the present invention further provides a device for generating a high-order calling code oriented to a data stream model, including:
the analysis result acquisition module is used for analyzing the calculation module in the data stream to obtain the analysis result of the calculation module;
the calculation module determination module is used for determining whether the calculation module is a sub-module calling module according to the analysis result;
the size relation determining module is used for determining the size relation between the array dimension corresponding to the calculating module and the preset maximum expansion times under the condition that the calculating module is a sub-module calling module or is a non-sub-module calling module and the calculating module is a matrix function operation module;
the first high-order code generation module is used for carrying out function calling based on a circular calling mode under the condition that the array dimension is larger than the maximum expansion times so as to generate a high-order calling code corresponding to the calculation module;
and the second high-order code generation module is used for expanding a calling function according to the array dimension under the condition that the array dimension is smaller than the maximum expansion times, and generating a high-order calling code corresponding to the calculation module.
Optionally, the apparatus further comprises:
and the maximum expansion frequency acquisition module is used for acquiring the maximum expansion frequency set by a service staff.
Optionally, the apparatus further comprises:
the parameter type acquisition module is used for acquiring the form parameter type of the calculation module and the actual parameter type of the calculation module according to the analysis result;
the one-dimensional high-order calling determining module is used for determining that the computing module is a one-dimensional high-order calling module under the condition that the form parameter type is a basic data type and the actual parameter type is a one-dimensional array;
and the two-dimensional high-order calling determining module is used for determining that the calculating module is a second-order high-order calling module under the condition that the form parameter type is a one-dimensional array and the actual parameter type is two-dimensional data.
Optionally, the apparatus further comprises:
the matrix function operation determining module is used for determining whether the calculating module is a matrix function operation module or not according to the analysis result under the condition that the calculating module is a non-sub-module calling module;
the size relation execution module is used for executing the size relation determination module under the condition that the calculation module is a matrix function operation module;
and the module code generation module is used for directly generating the module code corresponding to the calculation module under the condition that the calculation module is a non-matrix function operation module.
Compared with the prior art, the invention has the advantages that:
the data flow model-oriented high-order calling code generation method and device provided by the embodiment of the invention provide user-configurable options on the basis of supporting the generation of the high-order calling code, and take the efficiency, readability and flexibility of code generation into consideration. The method comprises the steps of analyzing a calculation module in a data stream to obtain an analysis result of the calculation module, determining whether the calculation module is a sub-module calling module or not according to the analysis result, determining the size relation between an array dimension corresponding to the calculation module and a preset maximum expansion frequency under the condition that the calculation module is the sub-module calling module or the calculation module is a non-sub-module calling module and the calculation module is a matrix function operation module, carrying out function calling based on a circular calling mode under the condition that the array dimension is larger than the maximum expansion frequency to generate a high-order calling code corresponding to the calculation module, and expanding the calling function according to the array dimension under the condition that the array dimension is smaller than the maximum expansion frequency to generate the high-order calling code corresponding to the calculation module. The embodiment of the invention can control whether the matrix function operation code is expanded and generated according to the set code expansion times when the matrix function operation code is generated, thereby simplifying the generated code; the method supports the compiling of pseudo codes of high-order calling, controls the code expansion according to the set boundary value of the maximum number of code expansion, and generates compact codes which are in line with the user check.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for generating a high-order calling code oriented to a data flow model according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating that a one-dimensional high-order calling code is not expanded when the maximum expansion number is 3 according to an embodiment of the present invention;
fig. 3 is a schematic diagram of one-dimensional high-order call code expansion when the maximum expansion number is 6 according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a device for generating a high-order call code oriented to a data flow model according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical idea of the embodiment of the application lies in that: when a function is called at a high order, whether the code generation is expanded or not is controlled, the method is also suitable for determining whether the matrix function operation is expanded according to the matrix dimension or not according to the set maximum number of times of the code expansion when the matrix function operation code is generated, and accordingly the code which is simpler and better in readability is controlled and generated.
Example one
Referring to fig. 1, a flowchart illustrating steps of a method for generating a high-order call code for a data stream model according to an embodiment of the present invention is shown, and as shown in fig. 1, the method may specifically include the following steps:
step 101: and analyzing a calculation module in the data stream to obtain an analysis result of the calculation module.
The embodiment of the invention can be applied to a scene of automatically generating the high-order calling code of the computing module.
High-level calling: the introduced real parametric function parameters are higher by one order
In function call and matrix function operation, a common call mode is a peer call, that is, a function is defined as void foo (double in1, double in2), and a call code is double input 1; double input2, foo1(input1, input2), when the input parameters are the arrays double input1[3], double input2[3], are high-level calls, similar to the high-level calls shown in table 1 below:
table 1:
in this embodiment, the maximum deployment number DEFAULT _ flag _ MAX may be preset by service personnel. The specific value of the maximum expansion number may be determined according to the business requirement, and this embodiment does not limit this.
Firstly, the calculation module in the data stream can be analyzed to obtain the analysis result of the calculation module, namely the grammar analysis result of the calculation module.
After the analysis result of the calculation module is obtained, step 102 is executed.
Step 102: and determining whether the computing module is a sub-module calling module or not according to the analysis result.
After the analysis result of the calculation module is obtained, whether the calculation module is a sub-module calling module can be determined according to the analysis result.
Before the step 102, in a case where the calculation module is determined to be a non-sub-module calling module, whether the calculation module is a matrix function operation module may be determined according to the analysis result, in a case where the calculation module is the matrix function operation module, a step of determining a size relationship between an array dimension corresponding to the calculation module and a preset maximum expansion number is performed, and in a case where the calculation module is a non-matrix function operation module, a module code corresponding to the calculation module is directly generated.
After determining whether the calculation module is a sub-module calling module according to the parsing result, step 103 is performed.
Step 103: and under the condition that the calculation module is a sub-module calling module or a non-sub-module calling module and the calculation module is a matrix function operation module, determining the size relation between the array dimension corresponding to the calculation module and the preset maximum expansion times.
When the calculation module is determined to be the sub-module calling module, the size relationship between the array dimension corresponding to the calculation module and the preset maximum expansion times can be determined.
Or, when the calculation module is determined to be a non-sub-module calling module and the calculation module is a matrix function operation module, determining the size relationship between the array dimension corresponding to the calculation module and the preset maximum expansion times.
Of course, before the step 103, the parameter type of the computing module and the parameter type of the computing module may also be obtained according to the analysis result, and the computing module is determined to be a one-dimensional high-order calling module when the parameter type is the basic data type and the parameter type is the one-dimensional array. And under the condition that the form parameter type is a one-dimensional array and the actual parameter type is two-dimensional data, determining the calculation module as a second-order high-order calling module.
In the event that it is determined that the array dimension of the computing module is greater than the maximum number of expansions, step 104 is performed.
And in case that it is determined that the array dimension of the calculation module is smaller than the maximum expansion number, step 105 is performed.
Step 104: and under the condition that the array dimension is greater than the maximum expansion times, performing function calling based on a circular calling mode to generate a high-order calling code corresponding to the calculation module.
Under the condition that the array dimension of the calculation module is larger than the maximum expansion times, function calling can be carried out in a loop calling mode to generate a high-order calling code corresponding to the calculation module.
Step 105: and under the condition that the array dimension is smaller than the maximum expansion times, expanding a calling function according to the array dimension, and generating a high-order calling code corresponding to the calculation module.
And under the condition that the array dimension of the calculation module is smaller than the maximum expansion times, expanding the calling function according to the array dimension of the calculation module to generate a high-order calling code corresponding to the calculation module.
Next, the implementation process of the present embodiment is described in detail below with reference to fig. 2 and 3.
As shown in fig. 2 and fig. 3, a computation module of the data stream implements a call to a function mlf, mlf is defined as double mlf (double val, double lmt), and a pseudo code for the function is generated, and the pseudo code for the call is written as shown in table 2 below:
table 2:
the treatment process is as follows:
1. through syntax analysis, acquiring the 4 th behavior function call of the computing module;
2. analyzing the parameters of the function mlf, and determining the function parameters as basic data types;
3. analyzing the actual parameters of the function mlf, and determining the actual parameters of the function as one-dimensional data;
4. comparing the dimension of the real parameter one-dimensional array with the maximum function expansion times, if the maximum expansion times is set to 8, then all generated pseudo codes need to be expanded, and the generated codes can be as shown in the following table 3:
table 3:
if the maximum expansion times is set to 4, the function calling code is not expanded and is called according to a loop, and the generated code can be shown as the following table 4:
table 4:
example two
Referring to fig. 4, a schematic structural diagram of a device for generating a high-order call code oriented to a data stream model according to an embodiment of the present invention is shown, and as shown in fig. 4, the device may specifically include the following modules:
the analysis result obtaining module 210 is configured to analyze a calculation module in a data stream to obtain an analysis result of the calculation module;
a calculation module determination module 220, configured to determine whether the calculation module is a sub-module calling module according to the analysis result;
a magnitude relation determining module 230, configured to determine a magnitude relation between an array dimension corresponding to the computing module and a preset maximum expansion number when the computing module is a sub-module calling module, or when the computing module is a non-sub-module calling module and the computing module is a matrix function operation module;
a first high-order code generation module 240, configured to perform function call based on a loop call mode when the array dimension is greater than the maximum expansion number, and generate a high-order call code corresponding to the calculation module;
a second high-order code generating module 250, configured to expand a call function according to the array dimension when the array dimension is smaller than the maximum expansion number, and generate a high-order call code corresponding to the computing module.
Optionally, the apparatus further comprises:
and the maximum expansion frequency acquisition module is used for acquiring the maximum expansion frequency set by a service staff.
Optionally, the apparatus further comprises:
the parameter type acquisition module is used for acquiring the form parameter type of the calculation module and the actual parameter type of the calculation module according to the analysis result;
the one-dimensional high-order calling determining module is used for determining that the computing module is a one-dimensional high-order calling module under the condition that the form parameter type is a basic data type and the actual parameter type is a one-dimensional array;
and the two-dimensional high-order calling determining module is used for determining that the calculating module is a second-order high-order calling module under the condition that the form parameter type is a one-dimensional array and the actual parameter type is two-dimensional data.
Optionally, the apparatus further comprises:
the matrix function operation determining module is used for determining whether the calculating module is a matrix function operation module or not according to the analysis result under the condition that the calculating module is a non-sub-module calling module;
the size relation execution module is used for executing the size relation determination module under the condition that the calculation module is a matrix function operation module;
and the module code generation module is used for directly generating the module code corresponding to the calculation module under the condition that the calculation module is a non-matrix function operation module.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (8)
1. A high-order calling code generation method oriented to a data flow model is characterized by comprising the following steps:
analyzing a calculation module in the data stream to obtain an analysis result of the calculation module;
determining whether the computing module is a sub-module calling module or not according to the analysis result;
under the condition that the calculation module is a sub-module calling module or a non-sub-module calling module and the calculation module is a matrix function operation module, determining the size relation between the array dimension corresponding to the calculation module and the preset maximum expansion times;
under the condition that the array dimension is larger than the maximum expansion times, performing function calling based on a circular calling mode to generate a high-order calling code corresponding to the calculation module;
and under the condition that the array dimension is smaller than the maximum expansion times, expanding a calling function according to the array dimension, and generating a high-order calling code corresponding to the calculation module.
2. The method according to claim 1, before the parsing the computation module in the data stream to obtain the parsing result of the computation module, further comprising:
acquiring the maximum expansion times set by service personnel.
3. The method according to claim 1, before the determining a size relationship between an array dimension corresponding to the computing module and a preset maximum expansion number, further comprising:
acquiring the form parameter type of the calculation module and the actual parameter type of the calculation module according to the analysis result;
determining the calculation module as a one-dimensional high-order calling module under the condition that the form parameter type is a basic data type and the actual parameter type is a one-dimensional array;
and determining the calculation module as a second-order high-order calling module under the condition that the form parameter type is a one-dimensional array and the actual parameter type is two-dimensional data.
4. The method according to claim 1, wherein after the determining whether the computing module is a sub-module calling module according to the parsing result, further comprising:
under the condition that the computing module is a non-sub-module calling module, determining whether the computing module is a matrix function operation module or not according to the analysis result;
under the condition that the calculation module is a matrix function operation module, executing the step of determining the size relation between the array dimension corresponding to the calculation module and the preset maximum expansion times;
and under the condition that the calculation module is a non-matrix function operation module, directly generating a module code corresponding to the calculation module.
5. A data flow model-oriented high-order call code generation apparatus, comprising:
the analysis result acquisition module is used for analyzing the calculation module in the data stream to obtain the analysis result of the calculation module;
the calculation module determination module is used for determining whether the calculation module is a sub-module calling module according to the analysis result;
the size relation determining module is used for determining the size relation between the array dimension corresponding to the calculating module and the preset maximum expansion times under the condition that the calculating module is a sub-module calling module or is a non-sub-module calling module and the calculating module is a matrix function operation module;
the first high-order code generation module is used for carrying out function calling based on a circular calling mode under the condition that the array dimension is larger than the maximum expansion times so as to generate a high-order calling code corresponding to the calculation module;
and the second high-order code generation module is used for expanding a calling function according to the array dimension under the condition that the array dimension is smaller than the maximum expansion times, and generating a high-order calling code corresponding to the calculation module.
6. The apparatus of claim 5, further comprising:
and the maximum expansion frequency acquisition module is used for acquiring the maximum expansion frequency set by a service staff.
7. The apparatus of claim 5, further comprising:
the parameter type acquisition module is used for acquiring the form parameter type of the calculation module and the actual parameter type of the calculation module according to the analysis result;
the one-dimensional high-order calling determining module is used for determining that the computing module is a one-dimensional high-order calling module under the condition that the form parameter type is a basic data type and the actual parameter type is a one-dimensional array;
and the two-dimensional high-order calling determining module is used for determining that the calculating module is a second-order high-order calling module under the condition that the form parameter type is a one-dimensional array and the actual parameter type is two-dimensional data.
8. The method of claim 5, wherein the apparatus further comprises:
the matrix function operation determining module is used for determining whether the calculating module is a matrix function operation module or not according to the analysis result under the condition that the calculating module is a non-sub-module calling module;
the size relation execution module is used for executing the size relation determination module under the condition that the calculation module is a matrix function operation module;
and the module code generation module is used for directly generating the module code corresponding to the calculation module under the condition that the calculation module is a non-matrix function operation module.
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