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feat: create basic language server for schemas
Using an LSP allows providing editor agnostic support for schema files. Currently only reporting errors in schemas (and not handling eventual UTF-16 encoding).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| [package] | ||
| name = "stef-lsp" | ||
| version.workspace = true | ||
| authors.workspace = true | ||
| edition.workspace = true | ||
| rust-version.workspace = true | ||
| readme.workspace = true | ||
| homepage.workspace = true | ||
| repository.workspace = true | ||
| license.workspace = true | ||
|
|
||
| [dependencies] | ||
| ouroboros = "0.18.0" | ||
| stef-compiler = { path = "../stef-compiler" } | ||
| stef-parser = { path = "../stef-parser" } | ||
| tokio = { version = "1.34.0", features = ["io-std", "macros", "rt-multi-thread"] } | ||
| tower-lsp = { version = "0.20.0", features = ["proposed"] } | ||
| tracing = "0.1.40" | ||
| tracing-subscriber = { version = "0.3.18", features = ["env-filter"] } | ||
|
|
||
| [lints] | ||
| workspace = true |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,202 @@ | ||
| use std::ops::Range; | ||
|
|
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| use stef_parser::{ | ||
| error::{ | ||
| ParseAliasCause, ParseAttributeCause, ParseCommentError, ParseConstCause, | ||
| ParseDefinitionError, ParseEnumCause, ParseFieldsCause, ParseFieldsError, | ||
| ParseGenericsError, ParseIdError, ParseImportCause, ParseLiteralCause, ParseModuleCause, | ||
| ParseSchemaCause, ParseStructCause, ParseTypeCause, ParseTypeError, | ||
| }, | ||
| Schema, | ||
| }; | ||
| use tower_lsp::lsp_types::{self as lsp, Diagnostic}; | ||
|
|
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| pub fn compile(schema: &str) -> std::result::Result<Schema<'_>, Diagnostic> { | ||
| stef_parser::Schema::parse(schema, None).map_err(|e| match &e.cause { | ||
| ParseSchemaCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseSchemaCause::Definition(e) => parse_definition_diagnostic(schema, e), | ||
| }) | ||
| } | ||
|
|
||
| fn parse_definition_diagnostic(schema: &str, e: &ParseDefinitionError) -> Diagnostic { | ||
| match e { | ||
| ParseDefinitionError::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseDefinitionError::Comment(e) => parse_comment_diagnostic(schema, e), | ||
| ParseDefinitionError::Attribute(e) => match &e.cause { | ||
| ParseAttributeCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseAttributeCause::Literal(e) => match &e.cause { | ||
| ParseLiteralCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseLiteralCause::FoundReference { at } | ||
| | ParseLiteralCause::InvalidInt { at } | ||
| | ParseLiteralCause::ParseInt { at, .. } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| }, | ||
| }, | ||
| ParseDefinitionError::Module(e) => match &e.cause { | ||
| ParseModuleCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseModuleCause::InvalidName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| ParseModuleCause::Definition(e) => parse_definition_diagnostic(schema, e), | ||
| }, | ||
| ParseDefinitionError::Struct(e) => match &e.cause { | ||
| ParseStructCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseStructCause::InvalidName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| ParseStructCause::Generics(e) => parse_generics_diagnostic(schema, e), | ||
| ParseStructCause::Fields(e) => parse_fields_diagnostic(schema, e), | ||
| }, | ||
| ParseDefinitionError::Enum(e) => match &e.cause { | ||
| ParseEnumCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseEnumCause::InvalidName { at } | ParseEnumCause::InvalidVariantName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| ParseEnumCause::Generics(e) => parse_generics_diagnostic(schema, e), | ||
| ParseEnumCause::Field(e) => parse_fields_diagnostic(schema, e), | ||
| ParseEnumCause::Comment(e) => parse_comment_diagnostic(schema, e), | ||
| ParseEnumCause::Id(e) => parse_id_diagnostic(schema, e), | ||
| }, | ||
| ParseDefinitionError::Const(e) => match &e.cause { | ||
| ParseConstCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseConstCause::UnexpectedChar { at, .. } | ParseConstCause::InvalidName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| ParseConstCause::Type(e) => parse_type_diagnostic(schema, e), | ||
| ParseConstCause::Literal(e) => match &e.cause { | ||
| ParseLiteralCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseLiteralCause::FoundReference { at } | ||
| | ParseLiteralCause::InvalidInt { at } | ||
| | ParseLiteralCause::ParseInt { at, .. } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| }, | ||
| }, | ||
| ParseDefinitionError::Alias(e) => match &e.cause { | ||
| ParseAliasCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseAliasCause::InvalidName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| ParseAliasCause::Generics(e) => parse_generics_diagnostic(schema, e), | ||
| ParseAliasCause::Type(e) => parse_type_diagnostic(schema, e), | ||
| }, | ||
| ParseDefinitionError::Import(e) => parse_import_cause_diagnostic(schema, &e.cause), | ||
| } | ||
| } | ||
|
|
||
| fn parse_type_diagnostic(schema: &str, e: &ParseTypeError) -> Diagnostic { | ||
| match &e.cause { | ||
| ParseTypeCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseTypeCause::Type(e) => parse_type_diagnostic(schema, e), | ||
| ParseTypeCause::Segment(c) => parse_import_cause_diagnostic(schema, c), | ||
| } | ||
| } | ||
|
|
||
| fn parse_comment_diagnostic(schema: &str, e: &ParseCommentError) -> Diagnostic { | ||
| Diagnostic::new_simple(get_range(schema, e.at.clone()), e.to_string()) | ||
| } | ||
|
|
||
| fn parse_import_cause_diagnostic(schema: &str, c: &ParseImportCause) -> Diagnostic { | ||
| match c { | ||
| ParseImportCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), c.to_string()) | ||
| } | ||
| ParseImportCause::InvalidSegmentName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), c.to_string()) | ||
| } | ||
| ParseImportCause::StructName(c) => match c { | ||
| ParseStructCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), c.to_string()) | ||
| } | ||
| ParseStructCause::InvalidName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), c.to_string()) | ||
| } | ||
| ParseStructCause::Generics(e) => parse_generics_diagnostic(schema, e), | ||
| ParseStructCause::Fields(e) => parse_fields_diagnostic(schema, e), | ||
| }, | ||
| ParseImportCause::EnumName(c) => match c { | ||
| ParseEnumCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), c.to_string()) | ||
| } | ||
| ParseEnumCause::InvalidName { at } | ParseEnumCause::InvalidVariantName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), c.to_string()) | ||
| } | ||
| ParseEnumCause::Generics(e) => parse_generics_diagnostic(schema, e), | ||
| ParseEnumCause::Field(e) => parse_fields_diagnostic(schema, e), | ||
| ParseEnumCause::Comment(e) => parse_comment_diagnostic(schema, e), | ||
| ParseEnumCause::Id(e) => parse_id_diagnostic(schema, e), | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| fn parse_generics_diagnostic(schema: &str, e: &ParseGenericsError) -> Diagnostic { | ||
| match &e.cause { | ||
| stef_parser::error::ParseGenericsCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| stef_parser::error::ParseGenericsCause::InvalidName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| fn parse_fields_diagnostic(schema: &str, e: &ParseFieldsError) -> Diagnostic { | ||
| match &e.cause { | ||
| ParseFieldsCause::Parser(_) => { | ||
| Diagnostic::new_simple(get_range(schema, 0..schema.len()), e.to_string()) | ||
| } | ||
| ParseFieldsCause::InvalidName { at } => { | ||
| Diagnostic::new_simple(get_range(schema, *at..*at), e.cause.to_string()) | ||
| } | ||
| ParseFieldsCause::Type(e) => parse_type_diagnostic(schema, e), | ||
| ParseFieldsCause::Id(e) => parse_id_diagnostic(schema, e), | ||
| ParseFieldsCause::Comment(e) => parse_comment_diagnostic(schema, e), | ||
| } | ||
| } | ||
|
|
||
| fn parse_id_diagnostic(schema: &str, e: &ParseIdError) -> Diagnostic { | ||
| Diagnostic::new_simple(get_range(schema, e.at.clone()), e.to_string()) | ||
| } | ||
|
|
||
| #[allow(clippy::cast_possible_truncation)] | ||
| fn get_range(schema: &str, location: Range<usize>) -> lsp::Range { | ||
| let start_line = schema[..location.start].lines().count().saturating_sub(1); | ||
| let start_char = schema[..location.start] | ||
| .lines() | ||
| .last() | ||
| .map_or(0, |line| line.chars().count()); | ||
|
|
||
| let end_line = schema[..location.end].lines().count().saturating_sub(1); | ||
| let end_char = schema[..location.end] | ||
| .lines() | ||
| .last() | ||
| .map_or(0, |line| line.chars().count()); | ||
|
|
||
| lsp::Range::new( | ||
| lsp::Position::new(start_line as u32, start_char as u32), | ||
| lsp::Position::new(end_line as u32, end_char as u32), | ||
| ) | ||
| } |
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