Description

The ExpressionParser class allows you to implement an expression parser.

Methods

Clear

Clears parsing results.

(c *ExpressionParser) Clear()

Expression

Gets the expression string.

(c *ExpressionParser) Expression() string

• returns: string - expression string.

InitialTokens

List of original expression tokens.

(c *ExpressionParser) InitialTokens(): []*ExpressionToken

• returns: []*ExpressionToken - list of expression tokens.

OriginalTokens

Gets the original tokens

(c *ExpressionParser) OriginalTokens() []*Token

• returns: []*Token - token list

ParseString

Sets a new expression string and parses it into internal byte code.

(c *ExpressionParser) ParseString(expression string) error

• expression: string - new expression string.
• returns: error - error or nil if no errors occured.

ParseTokens

Parses a given token.

(c *ExpressionParser) ParseTokens(tokens []*Token) error

• tokens: []*Token - token to be parsed.
• returns: error - error or nil if no errors occured.

ResultTokens

Gets the list of parsed expression tokens.

(c *ExpressionParser) ResultTokens() []*ExpressionToken

• returns: []*ExpressionToken - list of expression tokens.

SetExpression

Sets the expression string.

(c *ExpressionParser) SetExpression(value string) error

• value string - expression string.
• returns: error - error or nil if no errors occured.

SetOriginalTokens

Sets the original tokens

(c *ExpressionParser) SetOriginalTokens(value []*Token) error

• value: []*Token - the token list
• returns: error - error or nil if no errors occured.

VariableNames

Gets the list of found variable names.

(c *ExpressionParser) VariableNames() []string

• returns: []string - list of found variable names.