git.delta.rocks / jrsonnet / refs/commits / 3943cce16e87

--- /dev/null
+++ b/crates/jrsonnet-cli/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "jrsonnet-cli"
+description = "Utilities for building jrsonnet CLIs"
+version = "0.1.0"
+authors = ["Лач <iam@lach.pw>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+jrsonnet-evaluator = { path = "../../crates/jrsonnet-evaluator", version = "1.0.0", features = ["explaining-traces"] }
+jrsonnet-parser = { path = "../../crates/jrsonnet-parser", version = "1.0.0" }
+
+[dependencies.clap]
+git = "https://github.com/clap-rs/clap"
+rev = "48d308a8ab9e96d4b21336e428feee420dbac51d"

--- /dev/null
+++ b/crates/jrsonnet-cli/src/ext.rs
@@ -0,0 +1,59 @@
+use crate::ConfigureState;
+use clap::Clap;
+use jrsonnet_evaluator::{EvaluationState, Result};
+use std::str::FromStr;
+
+#[derive(Clone)]
+pub struct ExtStr {
+	pub name: String,
+	pub value: String,
+}
+
+impl FromStr for ExtStr {
+	type Err = &'static str;
+	fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
+		let out: Vec<_> = s.split('=').collect();
+		match out.len() {
+			1 => Ok(ExtStr {
+				name: out[0].to_owned(),
+				value: std::env::var(out[0]).or(Err("missing env var"))?,
+			}),
+			2 => Ok(ExtStr {
+				name: out[0].to_owned(),
+				value: out[1].to_owned(),
+			}),
+
+			_ => Err("bad ext-str syntax"),
+		}
+	}
+}
+
+#[derive(Clap)]
+// #[clap(help_heading = "EXTERNAL VARIABLES")]
+pub struct ExtVarOpts {
+	/// Add string external variable.
+	/// External variables are globally available, so prefer to use top level arguments where possible.
+	/// If [=data] is not set, then it will be read from `name` env variable.
+	/// Can be accessed from code via `std.extVar("name")`
+	#[clap(long, short = 'V', name = "name[=var data]", number_of_values = 1)]
+	ext_str: Vec<ExtStr>,
+	/// Read string external variable from file.
+	/// See also `--ext-str`
+	// #[clap(long, name = "name[=var path]", number_of_values = 1)]
+	// ext_str_file: Vec<ExtStr>,
+	/// Add external variable from code.
+	/// See also `--ext-str`
+	#[clap(long, name = "name[=var source]", number_of_values = 1)]
+	ext_code: Vec<ExtStr>,
+}
+impl ConfigureState for ExtVarOpts {
+	fn configure(&self, state: &EvaluationState) -> Result<()> {
+		for ext in self.ext_str.iter() {
+			state.add_ext_str((&ext.name as &str).into(), (&ext.value as &str).into());
+		}
+		for ext in self.ext_code.iter() {
+			state.add_ext_code((&ext.name as &str).into(), (&ext.value as &str).into())?;
+		}
+		Ok(())
+	}
+}

--- /dev/null
+++ b/crates/jrsonnet-cli/src/lib.rs
@@ -0,0 +1,90 @@
+mod ext;
+mod manifest;
+mod tla;
+mod trace;
+
+pub use ext::*;
+pub use manifest::*;
+pub use tla::*;
+pub use trace::*;
+
+use clap::Clap;
+use jrsonnet_evaluator::{EvaluationState, FileImportResolver, Result};
+use std::path::PathBuf;
+
+pub trait ConfigureState {
+	fn configure(&self, state: &EvaluationState) -> Result<()>;
+}
+
+#[derive(Clap)]
+// #[clap(help_heading = "INPUT")]
+pub struct InputOpts {
+	#[clap(
+		long,
+		short = 'e',
+		about = "Threat input as code, evaluate them instead of reading file"
+	)]
+	pub evaluate: bool,
+
+	#[clap(about = "File to compile (Or code directly, if --evaluate is specified)")]
+	pub input: String,
+}
+
+#[derive(Clap)]
+// #[clap(help_heading = "OPTIONS")]
+pub struct MiscOpts {
+	/// Disable standard library. By default, standard library will be available via global `std` variable.
+	/// Beware that standard library will still be loaded if choosen manifestification method is not `none`
+	#[clap(long)]
+	no_stdlib: bool,
+
+	/// Number of allowed stack frames, stack overflow error will be returned if reached
+	#[clap(long, short = 's', default_value = "200")]
+	max_stack: usize,
+
+	/// Library search dirs. Any not found `imported` file will be searched in them.
+	/// Can also be specified via JSONNET_PATH, which should contain colon (semicolon on Windows) delimited list of directories
+	#[clap(long, short = 'J')]
+	jpath: Vec<PathBuf>,
+}
+impl ConfigureState for MiscOpts {
+	fn configure(&self, state: &EvaluationState) -> Result<()> {
+		if !self.no_stdlib {
+			state.with_stdlib();
+		}
+
+		state.set_import_resolver(Box::new(FileImportResolver {
+			library_paths: self.jpath.clone(),
+		}));
+
+		state.set_max_stack(self.max_stack);
+		Ok(())
+	}
+}
+
+/// For general configuration of jsonnet
+#[derive(Clap)]
+#[clap(name = "jrsonnet", version, author)]
+pub struct GeneralOpts {
+	#[clap(flatten)]
+	misc: MiscOpts,
+
+	#[clap(flatten)]
+	tla: TLAOpts,
+	#[clap(flatten)]
+	ext: ExtVarOpts,
+
+	#[clap(flatten)]
+	trace: TraceOpts,
+}
+
+impl ConfigureState for GeneralOpts {
+	fn configure(&self, state: &EvaluationState) -> Result<()> {
+		// Configure trace first, because tla-code/ext-code can throw
+		self.trace.configure(state)?;
+		self.misc.configure(state)?;
+		self.tla.configure(state)?;
+		self.ext.configure(state)?;
+		Ok(())
+	}
+}

--- /dev/null
+++ b/crates/jrsonnet-cli/src/manifest.rs
@@ -0,0 +1,59 @@
+use crate::ConfigureState;
+use clap::Clap;
+use jrsonnet_evaluator::{EvaluationState, ManifestFormat, Result};
+use std::str::FromStr;
+
+pub enum ManifestFormatName {
+	/// Expect string as output, and write them directly
+	None,
+	Json,
+	Yaml,
+}
+
+impl FromStr for ManifestFormatName {
+	type Err = &'static str;
+	fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
+		Ok(match s {
+			"none" => ManifestFormatName::None,
+			"json" => ManifestFormatName::Json,
+			"yaml" => ManifestFormatName::Yaml,
+			_ => return Err("no such format"),
+		})
+	}
+}
+
+#[derive(Clap)]
+// #[clap(group = clap::ArgGroup::new("output_format"), help_heading = "MANIFESTIFICATION OUTPUT")]
+pub struct ManifestOpts {
+	/// Output format, wraps resulting value to corresponding std.manifest call.
+	/// If none - then jsonnet file is expected to return plain string value, otherwise
+	/// output will be serialized to specified format
+	#[clap(long, short = 'f', default_value = "json", possible_values = &["none", "json", "yaml"], group = "output_format")]
+	format: ManifestFormatName,
+	/// Expect string as output, and write them directly.
+	/// Shortcut for --format=none, and can't be set with format together
+	#[clap(long, short = 'S', group = "output_format")]
+	string: bool,
+	/// Numbed of spaces to pad output manifest with.
+	/// 0 for hard tabs, -1 for single line output
+	#[clap(long, default_value = "4")]
+	line_padding: usize,
+}
+impl ConfigureState for ManifestOpts {
+	fn configure(&self, state: &EvaluationState) -> Result<()> {
+		if self.string {
+			state.set_manifest_format(ManifestFormat::None);
+		} else {
+			match self.format {
+				ManifestFormatName::None => state.set_manifest_format(ManifestFormat::None),
+				ManifestFormatName::Json => {
+					state.set_manifest_format(ManifestFormat::Json(self.line_padding))
+				}
+				ManifestFormatName::Yaml => {
+					state.set_manifest_format(ManifestFormat::Yaml(self.line_padding))
+				}
+			}
+		}
+		Ok(())
+	}
+}

--- /dev/null
+++ b/crates/jrsonnet-cli/src/trace.rs
@@ -0,0 +1,53 @@
+use crate::ConfigureState;
+use clap::Clap;
+use jrsonnet_evaluator::{
+	trace::{CompactFormat, ExplainingFormat, PathResolver},
+	EvaluationState, Result,
+};
+use std::str::FromStr;
+
+#[derive(PartialEq)]
+pub enum TraceFormatName {
+	Compact,
+	Explaining,
+}
+
+impl FromStr for TraceFormatName {
+	type Err = &'static str;
+	fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
+		Ok(match s {
+			"compact" => TraceFormatName::Compact,
+			"explaining" => TraceFormatName::Explaining,
+			_ => return Err("no such format"),
+		})
+	}
+}
+
+#[derive(Clap)]
+// #[clap(help_heading = "STACK TRACE VISUAL")]
+pub struct TraceOpts {
+	/// How stack traces should be displayed in console.
+	/// compact format only shows `filename:line:column`s, where explaining displays source code
+	/// with attached trace annotations, so it is more verbose
+	#[clap(long, possible_values = &["compact", "explaining"])]
+	trace_format: Option<TraceFormatName>,
+	/// Amount of stack trace elements to be displayed, if zero - then full stack trace will be displayed
+	#[clap(long, short = 't', default_value = "20")]
+	max_trace: usize,
+}
+impl ConfigureState for TraceOpts {
+	fn configure(&self, state: &EvaluationState) -> Result<()> {
+		let resolver = PathResolver::Absolute;
+		match self.trace_format.as_ref().unwrap_or(&TraceFormatName::Compact) {
+			TraceFormatName::Compact => state.set_trace_format(Box::new(CompactFormat {
+				resolver,
+				padding: 4,
+			})),
+			TraceFormatName::Explaining => {
+				state.set_trace_format(Box::new(ExplainingFormat { resolver }))
+			}
+		}
+		state.set_max_trace(self.max_trace);
+		Ok(())
+	}
+}