Struct FunctionBuilder

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pub struct FunctionBuilder { /* private fields */ }

Implementations§

Source §

impl FunctionBuilder

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pub fn new(ty: FuncType) -> Self

Examples found in repository ?

examples/simple_add.rs (line 14)

10fn main() {
11    let out_file = env::args().nth(1).expect("argument missing: output file");
12
13    let mut md = ModuleBuilder::new();
14    let f = FunctionBuilder::new(funtype!((i32, i32) -> i32))
15        .code(|cb, params| {
16            let a = params[0];
17            let b = params[1];
18            cb.get_local(a).get_local(b).i32_add().return_()
19        })
20        .build();
21    md.new_function(f);
22
23    let module = md.build();
24    let mut code = Vec::new();
25    module.dump(&mut code);
26    let mut out = File::create(out_file).unwrap();
27    out.write(&code).unwrap();
28}

More examples

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examples/fibonacci.rs (line 15)

9fn main() {
10    let out_file = env::args().nth(1).expect("argument missing: output file");
11
12    let mut md = ModuleBuilder::new();
13    // function to create must be the 0th function of the module...
14    let fib = FunctionIndex(0).into();
15    let f = FunctionBuilder::new(funtype!((i32) -> i32))
16        .code(|cb, params| {
17            let n = params[0];
18            cb.get_local(n)
19                .constant(1i32)
20                .i32_sub()
21                .call(fib)
22                .get_local(n)
23                .constant(2i32)
24                .i32_sub()
25                .call(fib)
26                .i32_add()
27                .return_()
28        })
29        .build();
30    md.new_function(f);
31
32    let module = md.build();
33    let mut code = Vec::new();
34    module.dump(&mut code);
35    let mut out = File::create(out_file).unwrap();
36    out.write(&code).unwrap();
37}

Source

pub fn build(self) -> (FuncType, FunctionBody)

Examples found in repository ?

examples/simple_add.rs (line 20)

10fn main() {
11    let out_file = env::args().nth(1).expect("argument missing: output file");
12
13    let mut md = ModuleBuilder::new();
14    let f = FunctionBuilder::new(funtype!((i32, i32) -> i32))
15        .code(|cb, params| {
16            let a = params[0];
17            let b = params[1];
18            cb.get_local(a).get_local(b).i32_add().return_()
19        })
20        .build();
21    md.new_function(f);
22
23    let module = md.build();
24    let mut code = Vec::new();
25    module.dump(&mut code);
26    let mut out = File::create(out_file).unwrap();
27    out.write(&code).unwrap();
28}

More examples

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examples/fibonacci.rs (line 29)

9fn main() {
10    let out_file = env::args().nth(1).expect("argument missing: output file");
11
12    let mut md = ModuleBuilder::new();
13    // function to create must be the 0th function of the module...
14    let fib = FunctionIndex(0).into();
15    let f = FunctionBuilder::new(funtype!((i32) -> i32))
16        .code(|cb, params| {
17            let n = params[0];
18            cb.get_local(n)
19                .constant(1i32)
20                .i32_sub()
21                .call(fib)
22                .get_local(n)
23                .constant(2i32)
24                .i32_sub()
25                .call(fib)
26                .i32_add()
27                .return_()
28        })
29        .build();
30    md.new_function(f);
31
32    let module = md.build();
33    let mut code = Vec::new();
34    module.dump(&mut code);
35    let mut out = File::create(out_file).unwrap();
36    out.write(&code).unwrap();
37}

Source

pub fn new_local(&mut self, ty: ValueType) -> LocalIndex

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pub fn new_locals(&mut self, tys: Vec<ValueType>) -> Vec<LocalIndex>

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pub fn code<F: FnOnce(CodeBuilder, &[LocalIndex]) -> CodeBuilder>( self, f: F, ) -> Self

Examples found in repository ?

examples/simple_add.rs (lines 15-19)

10fn main() {
11    let out_file = env::args().nth(1).expect("argument missing: output file");
12
13    let mut md = ModuleBuilder::new();
14    let f = FunctionBuilder::new(funtype!((i32, i32) -> i32))
15        .code(|cb, params| {
16            let a = params[0];
17            let b = params[1];
18            cb.get_local(a).get_local(b).i32_add().return_()
19        })
20        .build();
21    md.new_function(f);
22
23    let module = md.build();
24    let mut code = Vec::new();
25    module.dump(&mut code);
26    let mut out = File::create(out_file).unwrap();
27    out.write(&code).unwrap();
28}

More examples

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examples/fibonacci.rs (lines 16-28)

9fn main() {
10    let out_file = env::args().nth(1).expect("argument missing: output file");
11
12    let mut md = ModuleBuilder::new();
13    // function to create must be the 0th function of the module...
14    let fib = FunctionIndex(0).into();
15    let f = FunctionBuilder::new(funtype!((i32) -> i32))
16        .code(|cb, params| {
17            let n = params[0];
18            cb.get_local(n)
19                .constant(1i32)
20                .i32_sub()
21                .call(fib)
22                .get_local(n)
23                .constant(2i32)
24                .i32_sub()
25                .call(fib)
26                .i32_add()
27                .return_()
28        })
29        .build();
30    md.new_function(f);
31
32    let module = md.build();
33    let mut code = Vec::new();
34    module.dump(&mut code);
35    let mut out = File::create(out_file).unwrap();
36    out.write(&code).unwrap();
37}