thinline 0.1.0

A parser and builder for function-unittests written in comment sections for C-language family.
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#![cfg_attr(feature = "clippy", feature(plugin))]
#![cfg_attr(feature = "clippy", plugin(clippy))]

extern crate clang;
#[macro_use]
extern crate error_chain;
extern crate glob;
#[macro_use]
extern crate lazy_static;
extern crate python_parser;
extern crate regex;
#[macro_use]
extern crate serde_derive;
extern crate serde;
extern crate slog_envlogger;
extern crate snapshot;
extern crate walkdir;
extern crate yaml_rust;

pub mod analysis;
pub mod config_parser;
pub mod entity;
pub mod error;
pub mod language_type;
pub mod synthesis;

use analysis::{Analysis, ProjectFile};
use config_parser::ProjectParameters;
use error::*;
use language_type::LanguageType;
use std::path::PathBuf;
use synthesis::*;

#[derive(Default, Debug)]
/// Global structure representing the Thinline lib.
pub struct Thinline<T>
where
    T: LanguageType,
{
    /// The parsed project parameters.
    pub project_parameters: ProjectParameters,

    /// The structure holding the analysis_c data.
    pub analysis: Analysis<T>,

    /// The structure holding the synthesized testdata.
    pub synthesis: Synthesis,
}

impl<T> Thinline<T>
where
    T: LanguageType,
{
    /// Creates an instance of the lib containing Thinlines functionality.
    pub fn new() -> Self {
        Self::default()
    }

    /// Parses configuration from the given config yaml.
    pub fn parse_project_config<P: Into<PathBuf>>(
        &mut self,
        project_dir: P,
        config_name: &str,
    ) -> Result<()> {
        let project_config = project_dir.into().join(config_name);

        if !project_config.exists() || !project_config.is_file() {
            return Err(Error::from(format!(
                "The given project config file '{}' does not exist or is a directory.",
                project_config.to_str().ok_or_else(
                    || "Unable to stringify project config file.",
                )?
            )));
        }

        self.project_parameters = ProjectParameters::parse(project_config.to_str().ok_or_else(
            || "Unable to stringify project config file.",
        )?)?;

        println!("{:?}", self.project_parameters);

        Ok(())
    }

    /// Analyzes the project which should be tested.
    pub fn analyze_project<P: Into<PathBuf>>(&mut self, project_path: P) -> Result<()> {
        self.analysis = Analysis::new();
        let project_path_p = project_path.into();

        if project_path_p.is_dir() {
            // Project path is a directory, thus it is neccessay to traverse to the project
            // and collect all the sources.
            if let Some(source_dirs) = &self.project_parameters.source_dirs {
                self.analysis.collect_sources(&project_path_p, &source_dirs)?;
            }
        }

        if project_path_p.is_file() {
            if let Some(ext) = project_path_p.extension() {
                // Project path is a file and has the right extension.
                if T::file_types().contains(&ext.to_str().ok_or_else(
                    || "Unable to stringify file extension.",
                )?)
                {
                    // Push it to the project file vectory for analyzing purposes.
                    self.analysis.project_files_mut().push(ProjectFile::new(
                        &project_path_p,
                    ));
                }
            }
        }

        self.analysis.extract_entities()?;

        Ok(())
    }
}