Describe the synthesis analysis model of compiler? in compiler designer. or Explain in detail the process of compilation? in compiler designer

 what is compiler?

• compiler is a program that convert high level language into machine level language.
• compiler is scans all the lines of source program and list out all syntax error at a time.

A compiler contain six phases which are as fallows. 

1: phase 1 (Lexical analysis): 

a : The lexical analyzer is also called scanner.         

b: The lexical analyzer phase takes source program as input and separates characters of  source language into group of sting called token.

c: operator symbols such as >,>=,+,etc punctuation symbols such as parenthesis or commas.

2. phase 2(syntax analyzer):

a: the syntax analyzer phase is also called parsing phase.

b: the syntax analyzer group tokens together into syntactic structure .

c: the output of this is parse tee.

3: phase 4 (semantic analyzer ):

a: the semantic analyzer phase check the source program for semantic error and gather type                        information for subsequent code generation phase.

b: it uses the hierarchical structure determined by syntax analyzer phase to identify the operators and          operands of expression and  statements. 

4: phase 4 (intermediate code generation):

a: the intermediate code generation take parse tree as an input from semantic phase and generates                intermediate  

b: it generates variety of code as three address  code, quadruple, triple,

5: phase(code optimization):

this phase is designed to improve the intermediate code so that the ultimate object program run faster and takes less space.

6: phase (code generation):

a: it is the final phase for compiler.

b: it generates the assembly code as target language .

c: in this phase the address in the binary code is translated from logical address.