BranchOutputOptimizer

Optimize the code used to output content

This method will go through the array of tokens, identify if/elseif/else blocks that contain identical code at the beginning or the end and move the common code outside of the block

Capture the expressions used in any number of consecutive output statements

Starts looking at current index. Ends at the first token that's not part of an output statement

Capture an expression used in output at current index

Ends on "." or ";"

Capture the source of a control structure from its keyword to its opening brace

Ends after the brace, but the brace itself is not returned

Test whether the token at current index is an if/elseif/else token

Merge the branches of an if/elseif/else block

Returns an array that contains the following:

• before: array of PHP expressions to be output before the block
• source: PHP code for the if block
• after: array of PHP expressions to be output after the block

Merge two consecutive series of consecutive output expressions together

Optimize the "head" part of a series of branches in-place

Optimize the output of given branches

Optimize the "tail" part of a series of branches in-place

Parse the if, elseif or else branch starting at current index

Ends at the last }

Parse the if block (including elseif/else branches) starting at current index

Serialize a recorded branch back to PHP

Serialize a series of recorded branch back to PHP

Serialize a series of output expressions

Serialize a token back to PHP

Attempt to move past output assignment at current index