core/utils.nim
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import tables, strutils, macros, critbits, httpclient import types, parser, interpreter proc isSymbol*(s: MinValue): bool = return s.kind == minSymbol proc isQuotation*(s: MinValue): bool = return s.kind == minQuotation proc isString*(s: MinValue): bool = return s.kind == minString proc isFloat*(s: MinValue): bool = return s.kind == minFloat proc isInt*(s: MinValue): bool = return s.kind == minInt proc isNumber*(s: MinValue): bool = return s.kind == minInt or s.kind == minFloat proc isBool*(s: MinValue): bool = return s.kind == minBool proc isStringLike*(s: MinValue): bool = return s.isSymbol or s.isString or (s.isQuotation and s.qVal.len == 1 and s.qVal[0].isSymbol) proc isObject*(a: MinValue, t: string): bool = return a.isQuotation and not a.objType.isNil and a.objType == t proc isObject*(a: MinValue): bool = return a.isQuotation and not a.objType.isNil proc newVal*(s: string): MinValue = return MinValue(kind: minString, strVal: s) proc newVal*(s: cstring): MinValue = return MinValue(kind: minString, strVal: $s) proc newVal*(q: seq[MinValue]): MinValue = return MinValue(kind: minQuotation, qVal: q) proc newVal*(s: BiggestInt): MinValue = return MinValue(kind: minInt, intVal: s) proc newVal*(s: BiggestFloat): MinValue = return MinValue(kind: minFloat, floatVal: s) proc newVal*(s: bool): MinValue = return MinValue(kind: minBool, boolVal: s) proc newSym*(s: string): MinValue = return MinValue(kind: minSymbol, symVal: s) # Error Helpers proc raiseInvalid*(msg: string) = raise MinInvalidError(msg: msg) proc raiseUndefined*(msg: string) = raise MinUndefinedError(msg: msg) proc raiseOutOfBounds*(msg: string) = raise MinOutOfBoundsError(msg: msg) proc raiseRuntime*(msg: string, qVal: var seq[MinValue]) = raise MinRuntimeError(msg: msg, qVal: qVal) proc raiseEmptyStack*() = raise MinEmptyStackError(msg: "Insufficient items on the stack") proc raiseServer*(code: HttpCode, msg: string) = raise MinServerError(msg: msg, code: code) proc getString*(v: MinValue): string = if v.isSymbol: return v.symVal elif v.isString: return v.strVal elif v.isQuotation: if v.qVal.len != 1: raiseInvalid("Quotation is not a quoted symbol") let sym = v.qVal[0] if sym.isSymbol: return sym.symVal else: raiseInvalid("Quotation is not a quoted symbol") proc warn*(s: string) = stderr.writeLine s proc previous*(scope: ref MinScope): ref MinScope = if scope.parent.isNil: return scope #### was: ROOT else: return scope.parent proc define*(i: In, name: string): ref MinScope = var scope = new MinScope scope.name = name scope.parent = i.scope return scope proc symbol*(scope: ref MinScope, sym: string, p: MinOperator): ref MinScope = scope.symbols[sym] = p return scope proc sigil*(scope: ref MinScope, sym: string, p: MinOperator): ref MinScope = scope.previous.sigils[sym] = p return scope proc finalize*(scope: ref MinScope) = var mdl = newSeq[MinValue](0).newVal mdl.scope = scope mdl.scope.previous.symbols[scope.name] = proc(i: In) {.gcsafe, closure.} = i.evaluating = true i.push mdl i.evaluating = false template `<-`*[T](target, source: var T) = shallowCopy target, source template alias*[T](varname: untyped, value: var T) = var varname {.inject.}: type(value) shallowCopy varname, value proc to*(q: MinValue, T: typedesc): T = return cast[T](q.obj) # Validators proc reqBool*(i: var MinInterpreter, a: var MinValue) = a = i.pop if not a.isBool: raiseInvalid("A bool value is required on the stack") proc reqTwoBools*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not a.isBool or not b.isBool: raiseInvalid("Two bool values are required on the stack") proc reqInt*(i: var MinInterpreter, a: var MinValue) = a = i.pop if not a.isInt: raiseInvalid("An integer is required on the stack") proc reqTwoInts*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not a.isInt or not b.isInt: raiseInvalid("Two integers are required on the stack") proc reqQuotation*(i: var MinInterpreter, a: var MinValue) = a = i.pop if not a.isQuotation: raiseInvalid("A quotation is required on the stack") proc reqIntAndQuotation*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not (a.isInt and b.isQuotation): raiseInvalid("An integer and a quotation are required on the stack") proc reqTwoNumbers*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not (a.isNumber and b.isNumber): raiseInvalid("Two numbers are required on the stack") proc reqTwoNumbersOrStrings*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not (a.isString and b.isString or a.isNumber and b.isNumber): raiseInvalid("Two numbers or two strings are required on the stack") proc reqString*(i: var MinInterpreter, a: var MinValue) = a = i.pop if not a.isString: raiseInvalid("A string is required on the stack") proc reqStringOrQuotation*(i: var MinInterpreter, a: var MinValue) = a = i.pop if not a.isQuotation and not a.isString: raiseInvalid("A quotation or a string is required on the stack") proc reqStringLike*(i: var MinInterpreter, a: var MinValue) = a = i.pop if not a.isStringLike: raiseInvalid("A symbol or a string is required on the stack") proc reqTwoStrings*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not a.isString or not b.isString: raiseInvalid("Two strings are required on the stack") proc reqTwoStringLike*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not a.isStringLike or not b.isStringLike: raiseInvalid("Two symbols or strings are required on the stack") proc reqThreeStrings*(i: var MinInterpreter, a, b, c: var MinValue) = a = i.pop b = i.pop c = i.pop if not a.isString or not b.isString or not c.isString: raiseInvalid("Three strings are required on the stack") proc reqTwoQuotations*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not a.isQuotation or not b.isQuotation: raiseInvalid("Two quotations are required on the stack") proc reqTwoQuotationsOrStrings*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not (a.isQuotation and b.isQuotation or a.isString and b.isString): raiseInvalid("Two quotations or two strings are required on the stack") proc reqThreeQuotations*(i: var MinInterpreter, a, b, c: var MinValue) = a = i.pop b = i.pop c = i.pop if not a.isQuotation or not b.isQuotation or not c.isQuotation: raiseInvalid("Three quotations are required on the stack") proc reqFourQuotations*(i: var MinInterpreter, a, b, c, d: var MinValue) = a = i.pop b = i.pop c = i.pop d = i.pop if not a.isQuotation or not b.isQuotation or not c.isQuotation or not d.isQuotation: raiseInvalid("Four quotations are required on the stack") proc reqTwoSimilarTypesNonSymbol*(i: var MinInterpreter, a, b: var MinValue) = a = i.pop b = i.pop if not ((a.kind == a.kind or (a.isNumber and a.isNumber)) and not a.isSymbol): raiseInvalid("Two non-symbol values of similar type are required on the stack") proc reqObject*(i: var MinInterpreter, t: string, a: var MinValue) = a = i.pop if not a.isObject(t): raiseInvalid("An object of type $1 is required on the stack" % [t]) proc reqObject*(i: var MinInterpreter, a: var MinValue) = a = i.pop if not a.isObject: raiseInvalid("An object is required on the stack") |