Params: add verification pass to params

params.toml

@@ -1,3 +1,5 @@
+verify_config = true
+
 [global_flow]
     gen_decl = 0.6
     gen_subroutine = 0.0
@@ -18,7 +20,7 @@
         gen_integer = 0.5
         gen_real = 0.5
         gen_tuple = 0.0
-        qual_const = 0.0
+        qual_const = 1.0
         qual_var = 0.0
 
     [statements.gen_global_decl]

src/main.rs

@@ -17,12 +17,17 @@ struct Args {
     config: PathBuf,
 }
 
-fn main() {
+fn main() -> Result<(), String> {
     let args = Args::parse();
     let params = Params::parse(&args.config);
-    let mut builder = AstBuilder::from(params);
 
+    if params.verify_config {
+        params.verify()?;
+    }
+
+    let mut builder = AstBuilder::from(params);
     builder.generate();
 
     println!("{}", builder.to_string());
+    Ok(())
 }

src/params.rs

@@ -22,6 +22,7 @@ macro_rules! toml_struct {
 
 toml_struct!{
     struct Params {
+        verify_config: bool,
         global_flow: GlobalFlow,
         statements: Statments,
         types: Types,
@@ -29,6 +30,37 @@ toml_struct!{
     }
 }
 
+impl Params {
+    pub fn parse(p: &PathBuf) -> Self {
+        let file_string = fs::read_to_string(p)
+            .expect("Failed to read parameters file into string");
+
+        let params: Params = toml::from_str(&file_string)
+            .expect("Failed to parse TOML from parameters file");
+
+        params
+    }
+
+    pub fn verify(&self) -> Result<(), String> {
+        let global_flow = self.global_flow.verify();
+        let statements = self.statements.verify();
+        let types = self.types.verify();
+        let dev = self.dev.verify();
+
+        if global_flow.is_err() {
+            global_flow
+        } else if statements.is_err() {
+            statements
+        } else if types.is_err() {
+            types
+        } else if dev.is_err() {
+            dev
+        } else {
+            Ok(())
+        }
+    }
+}
+
 toml_struct!{
     struct GlobalFlow {
         gen_decl: f64,
@@ -38,6 +70,18 @@ toml_struct!{
     }
 }
 
+impl GlobalFlow {
+    fn verify(&self) -> Result<(), String> {
+        let sum = self.gen_decl + self.gen_subroutine + self.gen_typedef + self.end_generation;
+
+        if (sum - 1.0).abs() > f64::EPSILON {
+            Err(format!("global_flow probability sum is = {}", sum))
+        } else {
+            Ok(())
+        }
+    }
+}
+
 toml_struct!{
     struct Statments {
         gen_assign: GenAssign,
@@ -48,6 +92,30 @@ toml_struct!{
     }
 }
 
+impl Statments {
+    fn verify(&self) -> Result<(), String> {
+        let gen_assign = self.gen_assign.verify();
+        let gen_decl = self.gen_decl.verify();
+        let gen_global_decl = self.gen_global_decl.verify();
+        let gen_if_statement = self.gen_if_statement.verify();
+        let gen_loop = self.gen_loop.verify();
+
+        if gen_assign.is_err() {
+            gen_assign
+        } else if gen_decl.is_err() {
+            gen_decl
+        } else if gen_global_decl.is_err() {
+            gen_global_decl
+        } else if gen_if_statement.is_err() {
+            gen_if_statement
+        } else if gen_loop.is_err() {
+            gen_loop
+        } else {
+            Ok(())
+        }
+    }
+}
+
 toml_struct!{
     struct GenAssign {
         gen_boolean: f64,
@@ -58,6 +126,12 @@ toml_struct!{
     }
 }
 
+impl GenAssign {
+    fn verify(&self) -> Result<(), String> {
+        Ok(())
+    }
+}
+
 toml_struct!{
     struct GenDecl {
         gen_boolean: f64,
@@ -70,6 +144,26 @@ toml_struct!{
     }
 }
 
+impl GenDecl {
+    fn verify(&self) -> Result<(), String> {
+        let sum_type = self.gen_boolean
+            + self.gen_character
+            + self.gen_integer
+            + self.gen_real
+            + self.gen_tuple;
+
+        let sum_qual = self.qual_const + self.qual_var;
+
+        if (sum_type - 1.0).abs() > f64::EPSILON {
+            Err(format!("statements.gen_decl probability sum for types is = {}", sum_type))
+        } else if (sum_qual - 1.0).abs() > f64::EPSILON {
+            Err(format!("statements.gen_decl probability sum for qualifiers is = {}", sum_qual))
+        } else {
+            Ok(())
+        }
+    }
+}
+
 toml_struct!{
     struct GenGlobalDecl {
         gen_boolean: f64,
@@ -80,6 +174,12 @@ toml_struct!{
     }
 }
 
+impl GenGlobalDecl {
+    fn verify(&self) -> Result<(), String> {
+        Ok(())
+    }
+}
+
 toml_struct!{
     struct GenIfStatement {
         gen_statement: f64,
@@ -90,6 +190,12 @@ toml_struct!{
     }
 }
 
+impl GenIfStatement {
+    fn verify(&self) -> Result<(), String> {
+        Ok(())
+    }
+}
+
 toml_struct!{
     struct GenLoop {
         gen_inf_loop: f64,
@@ -99,6 +205,12 @@ toml_struct!{
     }
 }
 
+impl GenLoop {
+    fn verify(&self) -> Result<(), String> {
+        Ok(())
+    }
+}
+
 toml_struct!{
     struct Types {
         gen_boolean: GenBoolean,
@@ -107,6 +219,24 @@ toml_struct!{
     }
 }
 
+impl Types {
+    fn verify(&self) -> Result<(), String> {
+        let gen_boolean = self.gen_boolean.verify();
+        let gen_integer = self.gen_integer.verify();
+        let gen_real = self.gen_real.verify();
+
+        if gen_boolean.is_err() {
+            gen_boolean
+        } else if gen_integer.is_err() {
+            gen_integer
+        } else if gen_real.is_err() {
+            gen_real
+        } else {
+            Ok(())
+        }
+    }
+}
+
 toml_struct!{
     struct GenBoolean {
         expr_and: f64,
@@ -128,6 +258,12 @@ toml_struct!{
     }
 }
 
+impl GenBoolean {
+    fn verify(&self) -> Result<(), String> {
+        Ok(())
+    }
+}
+
 toml_struct!{
     struct GenInteger {
         expr_add: f64,
@@ -143,6 +279,28 @@ toml_struct!{
     }
 }
 
+impl GenInteger {
+    fn verify(&self) -> Result<(), String> {
+        let sum = self.expr_add
+            + self.expr_sub
+            + self.expr_mul
+            + self.expr_div
+            + self.expr_rem
+            + self.expr_exp
+            + self.expr_pos
+            + self.expr_neg
+            + self.get_instant;
+
+        if self.max_depth <= 0 {
+            Err("types.gen_integer.max_depth must be at least 1".to_string())
+        } else if (sum - 1.0).abs() > f64::EPSILON {
+            Err(format!("types.gen_integer probability sum is = {}", sum))
+        } else {
+            Ok(())
+        }
+    }
+}
+
 toml_struct!{
     struct GenReal {
         expr_add: f64,
@@ -159,6 +317,29 @@ toml_struct!{
     }
 }
 
+impl GenReal {
+    fn verify(&self) -> Result<(), String> {
+        let sum = self.expr_add
+            + self.expr_sub
+            + self.expr_mul
+            + self.expr_div
+            + self.expr_rem
+            + self.expr_exp
+            + self.expr_pos
+            + self.expr_neg
+            + self.gen_integer
+            + self.get_instant;
+
+        if self.max_depth <= 0 {
+            Err("types.gen_real.max_depth must be at least 1".to_string())
+        } else if (sum - 1.0).abs() > f64::EPSILON {
+            Err(format!("types.gen_real probability sum is = {}", sum))
+        } else {
+            Ok(())
+        }
+    }
+}
+
 toml_struct!{
     struct Dev {
         float_gen_distro_pos_stddiv: f32,
@@ -168,14 +349,8 @@ toml_struct!{
     }
 }
 
-impl Params {
-    pub fn parse(p: &PathBuf) -> Self {
-        let file_string = fs::read_to_string(p)
-            .expect("Failed to read parameters file into string");
-
-        let params: Params = toml::from_str(&file_string)
-            .expect("Failed to parse TOML from parameters file");
-
-        params
+impl Dev {
+    fn verify(&self) -> Result<(), String> {
+        Ok(())
     }
 }