module translation.translation_class

Short summary

module pysqllike.translation.translation_class

One class which visits a syntax tree.

source on GitHub

Classes

class	truncated documentation
TranslateClass	Interface for a class which translates a code written in pseudo-SQL syntax into another language.

Methods

method	truncated documentation
__init__	Constructor.
__str__	Returns a string representing a tree.
Code	Returns the code of the initial Python function into another language.
init	Parses the function code and add it the class, it complements the constructor.
interpretFunction	Starts the interpretation of node which begins a function.
interpretReturn	Starts the interpretation of a node which sets a return.
Intruction	Builds an instruction of a function based on its name and its children.
RaiseCodeException	Raises an exception when interpreting the code.
ResolveExpression	Produces an expression based on a a node and its children.
Select	Interprets a select statement.
setReturn	Indicates all nodes containing information about returned results.
Signature	Build the signature of a function based on its name and its children.
to_str	Returns a string representing a tree.
Where	Interprets a select statement.

Documentation

One class which visits a syntax tree.

source on GitHub

class pysqllike.translation.translation_class.TranslateClass(code_func)

Bases: object

Interface for a class which translates a code written in pseudo-SQL syntax into another language.

source on GitHub

Constructor.

Parameters:

code_func – code (str) or function(func)

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Code()

Returns the code of the initial Python function into another language.

Returns:

str

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Intruction(rows)

Builds an instruction of a function based on its name and its children.

Parameters:

rows – node where type == Assign

Returns:

list of strings (code)

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RaiseCodeException(message, field='processed', code_rows=None)

Raises an exception when interpreting the code.

Parameters:

• field – field to add to the message exception

• code_rows – list of rows to display

Raises:

CodeException

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ResolveExpression(node, prefixAtt)

Produces an expression based on a a node and its children.

Parameters:

• node – node

• prefixAtt – prefix to add before an attribute (usually _)

Returns:

a string, the used fields, the called functions

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Select(name, table, rows)

Interprets a select statement.

Parameters:

• name – name of the table which receives the results

• table – name of the table it applies to

• rows – rows to consider

Returns:

list of strings (code)

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Signature(name, rows)

Build the signature of a function based on its name and its children.

Parameters:

• name – name

• rows – node where type == arguments

Returns:

list of strings (code)

source on GitHub

Where(name, table, rows)

Interprets a select statement.

Parameters:

• name – name of the table which receives the results

• table – name of the table it applies to

• rows – rows to consider

Returns:

list of strings (code)

source on GitHub

__init__(code_func)

Constructor.

Parameters:

code_func – code (str) or function(func)

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__str__()

Returns a string representing a tree.

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_symbols = {'Gt': '>', 'Lt': '<', 'Mult': '*'}

init(code)

Parses the function code and add it the class, it complements the constructor.

Parameters:

code – function code

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interpretFunction(obj)

Starts the interpretation of node which begins a function.

Parameters:

obj – obj to begin with (a function)

Returns:

list of strings

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interpretReturn(obj)

Starts the interpretation of a node which sets a return.

Parameters:

obj – obj to begin with (a function)

Returns:

list of strings

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setReturn(nodes)

Indicates all nodes containing information about returned results.

Parameters:

node – list of nodes

Returns:

list of string

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to_str(fields=None)

Returns a string representing a tree.

Parameters:

fields – additional fields to add at the end of each row

Returns:

string

source on GitHub