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✨ Generate message from FIX 4x XML spec
Content: - Generator code structure. - Type system with trait. - Getter & setters for basic fields. - Constructor with required params. - Group generation. - Components management. - Constructor from existing message. - Sub package for all FIX 4XX specs. - Unit tests ❤️ + CI. - Polish the code and update doc 😁. Extra stuff to implements in new PR: - Enum with all possible messages + MessageCracker function like. - Explain why FIX5.0 is not generated in this crate and how to generate it.
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[workspace] | ||
resolver = "2" | ||
members = ["quickfix-ffi", "quickfix-spec-parser", "quickfix"] | ||
members = [ | ||
"quickfix-ffi", | ||
"quickfix-msg-gen", | ||
"quickfix-spec-parser", | ||
"quickfix", | ||
"quickfix-msg40", | ||
"quickfix-msg41", | ||
"quickfix-msg42", | ||
"quickfix-msg43", | ||
"quickfix-msg44", | ||
] |
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[package] | ||
name = "quickfix-msg-gen" | ||
version = "0.1.0" | ||
authors = ["Arthur LE MOIGNE"] | ||
edition = "2021" | ||
description = "FIX code generator from XML spec file" | ||
repository = "https://github.com/arthurlm/quickfix-rs" | ||
license = "MIT" | ||
keywords = ["quickfix", "fix-protocol", "finance", "code-generator"] | ||
categories = ["development-tools::build-utils"] | ||
rust-version = "1.70.0" | ||
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[dependencies] | ||
quickfix-spec-parser = { path = "../quickfix-spec-parser", version = "0.1.0" } | ||
quickfix = { path = "../quickfix", version = "0.1.0" } | ||
convert_case = "0.6.0" | ||
itertools = "0.12.0" | ||
bytes = "1.5.0" |
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use std::collections::HashSet; | ||
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use quickfix_spec_parser::{FieldValue, FixSpec, Message}; | ||
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use crate::{FixCodeSpec, MessageField, MessageGroup, MessageSpec, SubComponent}; | ||
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pub fn convert_spec(src: &FixSpec) -> FixCodeSpec { | ||
FixCodeSpec { | ||
field_specs: src.field_specs.clone(), | ||
headers: convert_field_value_list(src, &src.headers), | ||
trailers: convert_field_value_list(src, &src.trailers), | ||
messages: convert_messages(src, &src.messages), | ||
} | ||
} | ||
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fn convert_field_value_list(spec: &FixSpec, values: &[FieldValue]) -> Vec<SubComponent> { | ||
let mut output = Vec::with_capacity(values.len()); | ||
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// Convert recursively `FieldValue` to `SubComponent`. | ||
for value in values { | ||
match value { | ||
FieldValue::Field(x) => output.push(SubComponent::Field(MessageField { | ||
name: x.name.clone(), | ||
required: x.required, | ||
})), | ||
FieldValue::Group(x) => output.push(SubComponent::Group(MessageGroup { | ||
name: x.name.clone(), | ||
components: convert_field_value_list(spec, &x.values), | ||
})), | ||
FieldValue::Component(component) => { | ||
let component_spec = spec | ||
.component_specs | ||
.iter() | ||
.find(|x| x.name == component.name) | ||
.expect("Cannot find component"); | ||
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output.extend(convert_field_value_list(spec, &component_spec.values)); | ||
} | ||
} | ||
} | ||
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// Remove duplicate: example FIX4.3 -> RegistrationInstructions -> OwnershipType. | ||
let mut uniques = HashSet::new(); | ||
output.retain(|x| uniques.insert(x.name().to_string())); | ||
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output | ||
} | ||
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fn convert_messages(spec: &FixSpec, messages: &[Message]) -> Vec<MessageSpec> { | ||
messages | ||
.iter() | ||
.map(|message| MessageSpec { | ||
name: message.name.clone(), | ||
msg_type: message.msg_type.clone(), | ||
components: convert_field_value_list(spec, &message.values), | ||
}) | ||
.collect() | ||
} |
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