Parser
in package
Parsers a token stream.
This parser implements a "Precedence climbing" algorithm.
Tags
Table of Contents
- OPERATOR_LEFT = 1
- OPERATOR_RIGHT = 2
- $binaryOperators : mixed
- $functions : mixed
- $lint : mixed
- $names : mixed
- $stream : mixed
- $unaryOperators : mixed
- __construct() : mixed
- lint() : void
- Validates the syntax of an expression.
- parse() : Node
- Converts a token stream to a node tree.
- parseArguments() : mixed
- Parses arguments.
- parseArrayExpression() : mixed
- parseExpression() : mixed
- parseHashExpression() : mixed
- parsePostfixExpression() : mixed
- parsePrimaryExpression() : mixed
- getPrimary() : mixed
- parseConditionalExpression() : mixed
- doParse() : Node
Constants
OPERATOR_LEFT
public
mixed
OPERATOR_LEFT
= 1
OPERATOR_RIGHT
public
mixed
OPERATOR_RIGHT
= 2
Properties
$binaryOperators
private
mixed
$binaryOperators
$functions
private
mixed
$functions
$lint
private
mixed
$lint
$names
private
mixed
$names
$stream
private
mixed
$stream
$unaryOperators
private
mixed
$unaryOperators
Methods
__construct()
public
__construct(array<string|int, mixed> $functions) : mixed
Parameters
- $functions : array<string|int, mixed>
Return values
mixed —lint()
Validates the syntax of an expression.
public
lint(TokenStream $stream[, array<string|int, mixed>|null $names = [] ]) : void
The syntax of the passed expression will be checked, but not parsed.
If you want to skip checking dynamic variable names, pass null instead of the array.
Parameters
- $stream : TokenStream
- $names : array<string|int, mixed>|null = []
Tags
Return values
void —parse()
Converts a token stream to a node tree.
public
parse(TokenStream $stream[, array<string|int, mixed> $names = [] ]) : Node
The valid names is an array where the values are the names that the user can use in an expression.
If the variable name in the compiled PHP code must be different, define it as the key.
For instance, ['this' => 'container'] means that the variable 'container' can be used in the expression but the compiled code will use 'this'.
Parameters
- $stream : TokenStream
- $names : array<string|int, mixed> = []
Tags
Return values
Node —parseArguments()
Parses arguments.
public
parseArguments() : mixed
Return values
mixed —parseArrayExpression()
public
parseArrayExpression() : mixed
Return values
mixed —parseExpression()
public
parseExpression(int $precedence) : mixed
Parameters
- $precedence : int
Return values
mixed —parseHashExpression()
public
parseHashExpression() : mixed
Return values
mixed —parsePostfixExpression()
public
parsePostfixExpression(Node $node) : mixed
Parameters
- $node : Node
Return values
mixed —parsePrimaryExpression()
public
parsePrimaryExpression() : mixed
Return values
mixed —getPrimary()
protected
getPrimary() : mixed
Return values
mixed —parseConditionalExpression()
protected
parseConditionalExpression(Node $expr) : mixed
Parameters
- $expr : Node
Return values
mixed —doParse()
private
doParse(TokenStream $stream[, array<string|int, mixed>|null $names = [] ]) : Node
Parameters
- $stream : TokenStream
- $names : array<string|int, mixed>|null = []