support multiple modifiers
lurchi
parent
48af85e4a6
commit
2735d8e089
63
parse.nim
63
parse.nim
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@ -74,7 +74,6 @@ proc parseModifierName(input: string,
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op: char,
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name: string] =
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assert(packet.cursor < input.len())
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const operators = ['=', ':', '+', '-', '?']
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if packet.cursor == input.high():
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result.complete = false
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return
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@ -82,8 +81,6 @@ proc parseModifierName(input: string,
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packet.cursor.inc()
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return (true, '\0', nil)
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result.op = input[packet.cursor]
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if not (result.op in operators):
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raise new(ValueError) # invalid operator
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packet.cursor.inc()
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if result.op == '?':
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if input[packet.cursor] != '\n':
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@ -163,6 +160,10 @@ proc parseData(input: string,
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result.value = input[packet.cursor .. packet.cursor + packet.remainingPartLen - 1]
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packet.remainingPartLen = -1
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proc isModifierName(input: string, cursor: int): bool =
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const operators = ['=', ':', '+', '-', '?']
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input[cursor] in operators
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proc newPacket*(): PsycPacket =
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PsycPacket(routingHeader: newSeq[Modifier](),
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entityHeader: newSeq[Modifier](),
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@ -191,17 +192,21 @@ proc parse*(input: string,
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result.needMoreInput = true
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case packet.state:
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of ParseState.RoutingModifierName:
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let (complete, op, name) = parseModifierName(input, packet)
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if complete:
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result.needMoreInput = false
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packet.state = ParseState.RoutingModifierValue
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let modifier = Modifier(op: op, name: name)
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packet.routingHeader.add(modifier)
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if not isModifierName(input, packet.cursor):
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packet.state = ParseState.ContentLength
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result.needMoreInput = false
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else:
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let (complete, op, name) = parseModifierName(input, packet)
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if complete:
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result.needMoreInput = false
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packet.state = ParseState.RoutingModifierValue
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let modifier = Modifier(op: op, name: name)
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packet.routingHeader.add(modifier)
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of ParseState.RoutingModifierValue:
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let (complete, value) = parseModifierSimpleValue(input, packet)
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result.needMoreInput = not complete
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if complete and value.len() > 0:
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packet.state = ParseState.ContentLength
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packet.state = ParseState.RoutingModifierName
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if packet.routingHeader[^1].value.isNil():
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packet.routingHeader[^1].value = ""
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packet.routingHeader[^1].value.add(value)
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@ -213,21 +218,25 @@ proc parse*(input: string,
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packet.state = ParseState.EntityModifierName
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packet.contentLength = value
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of ParseState.EntityModifierName:
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let oldCursor = packet.cursor
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let (complete, op, name) = parseModifierName(input, packet)
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packet.entityHeaderLen += packet.cursor - oldCursor
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if complete:
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if not input.isModifierName(packet.cursor):
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packet.state = ParseState.Method
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result.needMoreInput = false
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packet.state = ParseState.EntityModifierValue
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let modifier = Modifier(op: op, name: name)
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packet.entityHeader.add(modifier)
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else:
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let oldCursor = packet.cursor
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let (complete, op, name) = parseModifierName(input, packet)
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packet.entityHeaderLen += packet.cursor - oldCursor
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if complete:
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result.needMoreInput = false
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packet.state = ParseState.EntityModifierValue
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let modifier = Modifier(op: op, name: name)
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packet.entityHeader.add(modifier)
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of ParseState.EntityModifierValue:
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let oldCursor = packet.cursor
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let (complete, value) = parseModifierValue(input, packet)
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result.needMoreInput = not complete
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packet.entityHeaderLen += (packet.cursor - oldCursor)
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if complete:
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packet.state = ParseState.Method
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packet.state = ParseState.EntityModifierName
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if not value.isNil():
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if packet.entityHeader[^1].value.isNil():
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packet.entityHeader[^1].value = ""
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@ -258,28 +267,30 @@ suite "parser tests":
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var packet = newPacket()
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test "state sync":
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let input = ":_target\tpsyc://ve.symlynx.com/@blog\n\n?\n|\n"
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let input = ":_target\talice\n\n?\n|\n"
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while packet.state != ParseState.Complete:
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discard parse(input, packet)
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check(packet.routingHeader.len() == 1)
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check(packet.routingHeader[0] == Modifier(op: ':',
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name: "_target",
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value: "psyc://ve.symlynx.com/@blog"))
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value: "alice"))
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check(packet.entityHeader.len() == 1)
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check(packet.entityHeader[0] == Modifier(op: '?', name: nil, value: nil))
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test "simple-arg":
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let input = ":_target\tpsyc://ve.symlynx.com/@blog\n\n:_test\thello\n|\n"
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let input = ":_target\talice\n\n:_hello\tworld\n:_hallo\twelt\n|\n"
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while packet.state != ParseState.Complete:
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discard parse(input, packet)
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check(packet.entityHeader.len() == 1)
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check(packet.entityHeader[0] == Modifier(op: ':', name: "_test", value: "hello"))
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check(packet.entityHeader.len() == 2)
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check(packet.entityHeader[0] == Modifier(op: ':', name: "_hello", value: "world"))
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check(packet.entityHeader[1] == Modifier(op: ':', name: "_hallo", value: "welt"))
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test "binary-arg":
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let input = ":_target\tpsyc://ve.symlynx.com/@blog\n\n:_test 5\thello\n|\n"
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let input = ":_target\talice\n\n:_hello 5\tworld\n:_hallo 4\twelt\n|\n"
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while packet.state != ParseState.Complete:
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discard parse(input, packet)
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check(packet.entityHeader.len() == 1)
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check(packet.entityHeader[0] == Modifier(op: ':', name: "_test", value: "hello"))
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check(packet.entityHeader.len() == 2)
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check(packet.entityHeader[0] == Modifier(op: ':', name: "_hello", value: "world"))
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check(packet.entityHeader[1] == Modifier(op: ':', name: "_hallo", value: "welt"))
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echo "parser tests completed"
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