Line by line parsing of the statements written in an editor of an IDE

Replies

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  rahul69

  radha gogia

  I just wanted to ask that during our typing on the editor of any IDE ,we are always prompted for errors whenever we try to make some syntactical mistakes ..... how does a particular IDE is able to manage this stuff,is it that during typing only,some interpreter works for whom similar parse tables are made as for the complier.

  Actual process may differ for different IDE's but basic idea is the following.
  When we write code in IDE, it starts building a parse tree, and if it broken, it may flash
  error (by making color red etc.) However, this checking may not be exhaustive like that of compiler and so we need compiler to check it (eg in case of some semantic errors).
  Similar approach is used in auto-complete option of IDE's.
• 

  radha gogia

  rahul69

  Actual process may differ for different IDE's but basic idea is the following.
  When we write code in IDE, it starts building a parse tree, and if it broken, it may flash
  error (by making color red etc.) However, this checking may not be exhaustive like that of compiler and so we need compiler to check it (eg in case of some semantic errors).
  Similar approach is used in auto-complete option of IDE's.

  I just wanted to know that if the lexical analyser or parser would generate the parse trees then is it so that they have the information of keywords which the compiler has because the IDE's usually tend to display the error when we try to write any invalid keyword and also then there must be some means by which actually they tend to even prompt for error messages like return statement not found.