Language processing activity
- 1. LanguageProcessingActivities There are mainly two types of language processing activity which bridges the semantic gap between source language and target language. 1. Programming generation activities 2. Program execution
- 2. 1. Program generation activities A program generation activity aims an automatic generation of a program. Program generator is software, which aspects source program and generates a program in target language. Program generator introduces a new domain between the application and programming language domain is called program generator domain. Program Specification Program Generator Program in target PL Errors
- 3. 2. Program Execution Two popular models for program execution are translation and interpretation 1. Translation The program translation model bridge the execution gap by translating a program Written in PL, called source program, into an equivalent program in machine or assembly Language of the computer system, called target program. Source Program Translator Target Program Errors m/c language program Data
- 4. 3. Interpretation The interpreter reads the sources program and stores it in its memory. The CPU uses the program counter (PC) to note the address of the next instruction to be executed. The following statement would be subjected to the interpretation cycle, which could consist the following steps.
- 5. 1. Fetch the instruction 2. Analyze the statement and determine its meaning, the computation to be performed and its operand. 3. Execute the meaning of the statement. PC Source Program + Data Memory Error Interpreter