Documentation
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Overview ¶
Package symbols is a static reposistory of the symbols of generated parser. It is used by all code generation modules
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func GetNonTerminalSymbols ¶
func GetNonTerminalSymbols() []string
GetNonTerminalSymbols returns the list of non-terminals used by code generation modules
func GetSymbols ¶
func GetSymbols() []string
GetSymbols returns the code strings of all the NT and T symbols
func GetTerminalSymbols ¶
func GetTerminalSymbols() []string
GetTerminalSymbols returns the list of symbol strings used by code generation modules of the terminals
func GetTerminalTypeStrings ¶
func GetTerminalTypeStrings() []string
GetTerminalTypeStrings returns the type strings of the terminals in order of their types.
func IsNonTerminal ¶
Types ¶
type L ¶
type L struct {
// The subexpression to look ahead at
Expr Symbol
// true for positive (&) lookahead, false for negative (!) lookahead
Positive bool
}
L is the type of a lookahead symbol
func (L) IsLookahead ¶
IsLookahead always returns true if the symbol is a lookahead expression
func (L) IsNonTerminal ¶
IsNonTerminal always returns false if the symbol is a lookahead expression
type NT ¶
type NT int
NT is the type of a non-terminal symbol
func GetNonTerminals ¶
func GetNonTerminals() []NT
GetNonTerminals returns the list of non-terminals used by code generation modules
func (NT) IsLookahead ¶
IsLookahead always returns false if the symbol is a non-terminal
func (NT) IsNonTerminal ¶
IsNonTerminal always returns true if the symbol is a non-terminal
type Symbol ¶
type Symbol interface {
// IsNonTerminal returns true iff this symbol is a non-terminal
IsNonTerminal() bool
// IsLookahead return true iff this symbol is a lookahead expression
IsLookahead() bool
// Literal returns the literal value of the symbol in the grammar
Literal() string
// GoString returns the Go representation of the symbol that is used
// for code generation
GoString() string
// String returns the string representation of the symbol that is used
// for code generation
String() string
// contains filtered or unexported methods
}
Symbol is T or NT or L
func FromASTString ¶
FromASTString translates an AST symbol string to Symbol
type Symbols ¶
type Symbols []Symbol
Symbols is a list of Symbol
type T ¶
type T int
T is the type of a terminal symbol
func GetTerminals ¶
func GetTerminals() []T
GetTerminals returns the list of terminals used by code generation modules
func TerminalLiteralToType ¶
TerminalLiteralToType returns the T corresponding to the terminal litral s
func (T) IsLookahead ¶
IsLookahead always returns false if the symbol is a terminal
func (T) IsNonTerminal ¶
IsNonTerminal always returns false if the symbol is a terminal
func (T) TypeString ¶
TypeString returns the Go representation of t used by code generation modules
Source Files