parser

In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production


In our compiler model, the parser obtains a string of tokens from the lexical analyzer, and verifies that the string can be generated by the grammar for the source program. We expect the parser to report any syntax errors in an intelligible fashion. It should also recover from commonly occurring errors so that it can continue processing the remainder of its input.


Fig(8) Position of parser in Compiler model


The methods commonly used in compilers are classified as being either Top-down or bottom -up. As indicated by their names, Top- down parsers build parse trees from the top (root) to the bottom (leaves) and work up to the root.
In both cases, the input to the parser is scanned from left to right, one
symbol at time. We assume the output of the parser is some representation of the parse tree for the stream of tokens produced by the lexical analyzer. In practice there are a number of tasks that might be conducted during parsing, such as collecting information about various tokens into the symbol table, performing type checking and other kinds of semantic analysis, and generating intermediate code.

Grammars and productions
For the syntactic specification of a programming language , we shall use a notation called a context free grammar which systematically describe the syntax of programming language constructs like expressions and statements. Using a syntactic variable stmt to denote statements and variable expr to denote expressions, the production