Currently, the examples written in the docs of rust_source() are invalid, because they were written for an older version of {rextendr}, which was not able to generate extendr_module! and accepted Cargo.toml entries as plain text.
Before
``` r
code <- r"(
#[extendr]
fn hello() -> &'static str {
"Hello, world!"
}
#[extendr]
fn test( a: &str, b: i64) {
rprintln!("Data sent to Rust: {}, {}", a, b);
}
extendr_module! {
mod rextendr;
fn hello;
fn test;
}
)"
rextendr::rust_source(code = code)
#> i build directory: 'C:\Users\[redacted]\AppData\Local\Temp\RtmpKypJ4o\file589850301b71'
#> Error: Rust code could not be compiled successfully. Aborting.
hello()
#> Error in hello(): could not find function "hello"
test("a string", 42)
#> Error in test("a string", 42): could not find function "test"
```
``` r
code <- r"(
use pulldown_cmark::{Parser, Options, html};
#[extendr]
fn md_to_html(input: &str) -> String {
let mut options = Options::empty();
options.insert(Options::ENABLE_TABLES);
let parser = Parser::new_ext(input, options);
let mut output = String::new();
html::push_html(&mut output, parser);
output
}
extendr_module! {
mod rextendr;
fn md_to_html;
}
)"
rextendr::rust_source(code = code, dependencies = 'pulldown-cmark = "0.8"')
#> i build directory: 'C:\Users\[redacted]\AppData\Local\Temp\RtmpIXLi1Y\file22e419674f72'
#> Error: Object cannot be serialzied.
#> x Unnamed arguments found at position(s): `2`.
#> i List values should have names.
md_text <- "# The story of the fox
The quick brown fox **jumps over** the lazy dog.
The quick *brown fox* jumps over the lazy dog."
md_to_html(md_text)
#> Error in md_to_html(md_text): could not find function "md_to_html"
```
Created on 2021-05-12 by the [reprex package](https://reprex.tidyverse.org) (v2.0.0)After
``` r
code <- r"(
#[extendr]
fn hello() -> &'static str {
"Hello, world!"
}
#[extendr]
fn test( a: &str, b: i64) {
rprintln!("Data sent to Rust: {}, {}", a, b);
}
)"
rextendr::rust_source(code = code)
#> i build directory: 'C:\Users\[redacted]\AppData\Local\Temp\RtmpuAB2Zk\file440c10045ea'
#> v Writing 'C:/Users/[redacted]/AppData/Local/Temp/RtmpuAB2Zk/file440c10045ea/target/extendr_wrappers.R'.
hello()
#> [1] "Hello, world!"
test("a string", 42)
#> Data sent to Rust: a string, 42
code <- r"(
use pulldown_cmark::{Parser, Options, html};
#[extendr]
fn md_to_html(input: &str) -> String {
let mut options = Options::empty();
options.insert(Options::ENABLE_TABLES);
let parser = Parser::new_ext(input, options);
let mut output = String::new();
html::push_html(&mut output, parser);
output
}
)"
rextendr::rust_source(
code = code,
dependencies = list(`pulldown-cmark` = "0.8")
)
#> i build directory: 'C:\Users\[redacted]\AppData\Local\Temp\RtmpuAB2Zk\file440c10045ea'
#> v Writing 'C:/Users/[redacted]/AppData/Local/Temp/RtmpuAB2Zk/file440c10045ea/target/extendr_wrappers.R'.
md_text <- "# The story of the fox
The quick brown fox **jumps over** the lazy dog.
The quick *brown fox* jumps over the lazy dog."
md_to_html(md_text)
#> [1] "
The story of the fox
\n
The quick brown fox jumps over the lazy dog.\nThe quick brown fox jumps over the lazy dog.
\n"
```
Created on 2021-05-12 by the [reprex package](https://reprex.tidyverse.org) (v2.0.0)
Currently, the examples written in the docs of
rust_source()are invalid, because they were written for an older version of {rextendr}, which was not able to generateextendr_module!and acceptedCargo.tomlentries as plain text.This PR fixes this issue.
Before
``` r code <- r"( #[extendr] fn hello() -> &'static str { "Hello, world!" } #[extendr] fn test( a: &str, b: i64) { rprintln!("Data sent to Rust: {}, {}", a, b); } extendr_module! { mod rextendr; fn hello; fn test; } )" rextendr::rust_source(code = code) #> i build directory: 'C:\Users\[redacted]\AppData\Local\Temp\RtmpKypJ4o\file589850301b71' #> Error: Rust code could not be compiled successfully. Aborting. hello() #> Error in hello(): could not find function "hello" test("a string", 42) #> Error in test("a string", 42): could not find function "test" ``` ``` r code <- r"( use pulldown_cmark::{Parser, Options, html}; #[extendr] fn md_to_html(input: &str) -> String { let mut options = Options::empty(); options.insert(Options::ENABLE_TABLES); let parser = Parser::new_ext(input, options); let mut output = String::new(); html::push_html(&mut output, parser); output } extendr_module! { mod rextendr; fn md_to_html; } )" rextendr::rust_source(code = code, dependencies = 'pulldown-cmark = "0.8"') #> i build directory: 'C:\Users\[redacted]\AppData\Local\Temp\RtmpIXLi1Y\file22e419674f72' #> Error: Object cannot be serialzied. #> x Unnamed arguments found at position(s): `2`. #> i List values should have names. md_text <- "# The story of the fox The quick brown fox **jumps over** the lazy dog. The quick *brown fox* jumps over the lazy dog." md_to_html(md_text) #> Error in md_to_html(md_text): could not find function "md_to_html" ``` Created on 2021-05-12 by the [reprex package](https://reprex.tidyverse.org) (v2.0.0)After
``` r code <- r"( #[extendr] fn hello() -> &'static str { "Hello, world!" } #[extendr] fn test( a: &str, b: i64) { rprintln!("Data sent to Rust: {}, {}", a, b); } )" rextendr::rust_source(code = code) #> i build directory: 'C:\Users\[redacted]\AppData\Local\Temp\RtmpuAB2Zk\file440c10045ea' #> v Writing 'C:/Users/[redacted]/AppData/Local/Temp/RtmpuAB2Zk/file440c10045ea/target/extendr_wrappers.R'. hello() #> [1] "Hello, world!" test("a string", 42) #> Data sent to Rust: a string, 42 code <- r"( use pulldown_cmark::{Parser, Options, html}; #[extendr] fn md_to_html(input: &str) -> String { let mut options = Options::empty(); options.insert(Options::ENABLE_TABLES); let parser = Parser::new_ext(input, options); let mut output = String::new(); html::push_html(&mut output, parser); output } )" rextendr::rust_source( code = code, dependencies = list(`pulldown-cmark` = "0.8") ) #> i build directory: 'C:\Users\[redacted]\AppData\Local\Temp\RtmpuAB2Zk\file440c10045ea' #> v Writing 'C:/Users/[redacted]/AppData/Local/Temp/RtmpuAB2Zk/file440c10045ea/target/extendr_wrappers.R'. md_text <- "# The story of the fox The quick brown fox **jumps over** the lazy dog. The quick *brown fox* jumps over the lazy dog." md_to_html(md_text) #> [1] "The story of the fox
\nThe quick brown fox jumps over the lazy dog.\nThe quick brown fox jumps over the lazy dog.
\n" ``` Created on 2021-05-12 by the [reprex package](https://reprex.tidyverse.org) (v2.0.0)