Types

SexpError = enum errNone, ## no error errInvalidToken, ## invalid token errParensRiExpected, ## ``)`` expected errQuoteExpected, ## ``"`` expected errEofExpected ## EOF expected: enumeration that lists all errors that can occur Source Edit
SexpEventKind = enum sexpError, ## an error occurred during parsing sexpEof, ## end of file reached sexpString, ## a string literal sexpSymbol, ## a symbol sexpInt, ## an integer literal sexpFloat, ## a float literal sexpNil, ## the value ``nil`` sexpDot, ## the dot to separate car/cdr sexpListStart, ## start of a list: the ``(`` token sexpListEnd ## end of a list: the ``)`` token: enumeration of all events that may occur when parsing Source Edit
SexpNode = ref SexpNodeObj: SEXP node Source Edit
SexpNodeKind = enum SNil, SInt, SFloat, SString, SSymbol, SList, SCons: possible SEXP node types Source Edit
SexpNodeObj {.acyclic.} = object case kind*: SexpNodeKind of SString: str*: string of SSymbol: symbol*: string of SInt: num*: BiggestInt of SFloat: fnum*: float of SList: elems*: seq[SexpNode] of SCons: car: SexpNode cdr: SexpNode of SNil: nil: Source Edit
SexpParser = object of BaseLexer a: string tok: TTokKind kind: SexpEventKind err: SexpError: the parser object. Source Edit
SexpParsingError = object of ValueError: is raised for a SEXP error Source Edit

Procs

proc `$`(node: SexpNode): string {....raises: [], tags: [].}

Converts node to its SEXP Representation on one line. Source Edit

proc `==`(a, b: SexpNode): bool {....raises: [], tags: [].}

Check two nodes for equality Source Edit

proc `[]`(node: SexpNode; index: int): SexpNode {....raises: [], tags: [].}

Gets the node at index in a List. Result is undefined if index is out of bounds Source Edit

proc add(father, child: SexpNode) {....raises: [], tags: [].}

Adds child to a SList node father. Source Edit

proc close(my: var SexpParser) {.inline, ...raises: [Exception, IOError, OSError],
                                 tags: [WriteIOEffect].}

closes the parser my and its associated input stream. Source Edit

proc copy(p: SexpNode): SexpNode {....raises: [], tags: [].}

Performs a deep copy of a. Source Edit

proc errorMsg(my: SexpParser): string {....raises: [ValueError], tags: [].}

returns a helpful error message for the event sexpError Source Edit

proc errorMsgExpected(my: SexpParser; e: string): string {....raises: [ValueError],
    tags: [].}

returns an error message "e expected" in the same format as the other error messages Source Edit

proc escapeJson(s: string): string {....raises: [], tags: [].}

Converts a string s to its JSON representation. Source Edit

proc getColumn(my: SexpParser): int {.inline, ...raises: [], tags: [].}

get the current column the parser has arrived at. Source Edit

proc getCons(n: SexpNode; defaults: Cons = (newSNil(), newSNil())): Cons {.
    ...raises: [], tags: [].}

Retrieves the cons value of a SList SexpNode.

Returns default if n is not a SList.

Source Edit

proc getElems(n: SexpNode; default: seq[SexpNode] = @[]): seq[SexpNode] {.
    ...raises: [], tags: [].}

Retrieves the int value of a SList SexpNode.

Returns default if n is not a SList.

Source Edit

proc getFloat(my: SexpParser): float {.inline, ...raises: [ValueError], tags: [].}

returns the number for the event: sexpFloat Source Edit

proc getFNum(n: SexpNode; default: float = 0.0): float {....raises: [], tags: [].}

Retrieves the float value of a SFloat SexpNode.

Returns default if n is not a SFloat.

Source Edit

proc getInt(my: SexpParser): BiggestInt {.inline, ...raises: [ValueError], tags: [].}

returns the number for the event: sexpInt Source Edit

proc getLine(my: SexpParser): int {.inline, ...raises: [], tags: [].}

get the current line the parser has arrived at. Source Edit

proc getNum(n: SexpNode; default: BiggestInt = 0): BiggestInt {....raises: [],
    tags: [].}

Retrieves the int value of a SInt SexpNode.

Returns default if n is not a SInt.

Source Edit

proc getStr(n: SexpNode; default: string = ""): string {....raises: [], tags: [].}

Retrieves the string value of a SString SexpNode.

Returns default if n is not a SString.

Source Edit

proc getSymbol(n: SexpNode; default: string = ""): string {....raises: [], tags: [].}

Retrieves the int value of a SList SexpNode.

Returns default if n is not a SList.

Source Edit

proc hash(n: SexpNode): Hash {....raises: [], tags: [].}

Compute the hash for a SEXP node Source Edit

proc kind(my: SexpParser): SexpEventKind {.inline, ...raises: [], tags: [].}

returns the current event type for the SEXP parser Source Edit

proc len(n: SexpNode): int {....raises: [], tags: [].}

If n is a SList, it returns the number of elements. If n is a JObject, it returns the number of pairs. Else it returns 0. Source Edit

proc newSCons(car, cdr: SexpNode): SexpNode {....raises: [], tags: [].}

Creates a new SCons SexpNode Source Edit

proc newSFloat(n: float): SexpNode {....raises: [], tags: [].}

Creates a new SFloat SexpNode. Source Edit

proc newSInt(n: BiggestInt): SexpNode {....raises: [], tags: [].}

Creates a new SInt SexpNode. Source Edit

proc newSList(): SexpNode {....raises: [], tags: [].}

Creates a new SList SexpNode Source Edit

proc newSNil(): SexpNode {....raises: [], tags: [].}

Creates a new SNil SexpNode. Source Edit

proc newSString(s: string): SexpNode {....raises: [], tags: [].}

Creates a new SString SexpNode. Source Edit

proc newSSymbol(s: string): SexpNode {....raises: [], tags: [].}

Source Edit

proc open(my: var SexpParser; input: Stream) {....raises: [IOError, OSError],
    tags: [ReadIOEffect].}

initializes the parser with an input stream. Source Edit

proc parseSexp(buffer: string): SexpNode {.
    ...raises: [IOError, OSError, ValueError, SexpParsingError, Exception],
    tags: [ReadIOEffect, WriteIOEffect].}

Parses Sexp from buffer. Source Edit

proc parseSexp(s: Stream): SexpNode {....raises: [IOError, OSError, ValueError,
    SexpParsingError, Exception], tags: [ReadIOEffect, WriteIOEffect].}

Parses from a buffer s into a SexpNode. Source Edit

proc pretty(node: SexpNode; indent = 2): string {....raises: [], tags: [].}

Converts node to its Sexp Representation, with indentation and on multiple lines. Source Edit

proc raiseParseErr(p: SexpParser; msg: string) {.noinline, noreturn,
    ...raises: [SexpParsingError, ValueError], tags: [].}

raises an ESexpParsingError exception. Source Edit

proc sexp(b: bool): SexpNode {....raises: [], tags: [].}

Generic constructor for SEXP data. Creates a new SSymbol SexpNode with value t or SNil SexpNode. Source Edit

proc sexp(elements: openArray[SexpNode]): SexpNode {....raises: [], tags: [].}

Generic constructor for SEXP data. Creates a new SList SexpNode Source Edit

proc sexp(n: BiggestInt): SexpNode {....raises: [], tags: [].}

Generic constructor for SEXP data. Creates a new SInt SexpNode. Source Edit

proc sexp(n: float): SexpNode {....raises: [], tags: [].}

Generic constructor for SEXP data. Creates a new SFloat SexpNode. Source Edit

proc sexp(s: SexpNode): SexpNode {....raises: [], tags: [].}

Source Edit

proc sexp(s: string): SexpNode {....raises: [], tags: [].}

Generic constructor for SEXP data. Creates a new SString SexpNode. Source Edit

proc str(my: SexpParser): string {.inline, ...raises: [], tags: [].}

returns the character data for the events: sexpInt, sexpFloat, sexpString Source Edit

Iterators

iterator items(node: SexpNode): SexpNode {....raises: [], tags: [].}: Iterator for the items of node. node has to be a SList. Source Edit
iterator mitems(node: var SexpNode): var SexpNode {....raises: [], tags: [].}: Iterator for the items of node. node has to be a SList. Items can be modified. Source Edit

Macros

macro convertSexp(x: untyped): untyped: Convert an expression to a SexpNode directly, without having to specify % for every element. Source Edit