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add term_expansion basics

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This commit is contained in:
Mark Thom
2018-09-22 17:05:19 -06:00
parent 4d57989c2b
commit 66584cee5e
4 changed files with 25 additions and 19 deletions
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8
Cargo.lock generated
View File

@@ -86,7 +86,8 @@ dependencies = [
[[package]]
name = "prolog_parser"
version = "0.7.14"
version = "0.7.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"num 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
"ordered-float 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -107,12 +108,12 @@ dependencies = [
[[package]]
name = "rusty-wam"
version = "0.7.13"
version = "0.7.14"
dependencies = [
"downcast 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
"num 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
"ordered-float 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
"prolog_parser 0.7.14",
"prolog_parser 0.7.15 (registry+https://github.com/rust-lang/crates.io-index)",
"termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
@@ -151,6 +152,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum num-traits 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "cacfcab5eb48250ee7d0c7896b51a2c5eec99c1feea5f32025635f5ae4b00070"
"checksum num-traits 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "630de1ef5cc79d0cdd78b7e33b81f083cbfe90de0f4b2b2f07f905867c70e9fe"
"checksum ordered-float 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "58d25b6c0e47b20d05226d288ff434940296e7e2f8b877975da32f862152241f"
"checksum prolog_parser 0.7.15 (registry+https://github.com/rust-lang/crates.io-index)" = "11f378539616d1cd7b8fc006f309b5a4b483b82cbab76e898a9f1c99318b4dfa"
"checksum redox_syscall 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)" = "ab105df655884ede59d45b7070c8a65002d921461ee813a024558ca16030eea0"
"checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
"checksum termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"

4
Cargo.toml
View File

@@ -1,6 +1,6 @@
[package]
name = "rusty-wam"
version = "0.7.13"
version = "0.7.14"
authors = ["Mark Thom <markjordanthom@gmail.com>"]
repository = "https://github.com/mthom/rusty-wam"
description = "The Warren Abstract Machine in Rust."
@@ -10,7 +10,7 @@ license = "BSD-3-Clause"
downcast = "0.9.1"
num = "0.2"
ordered-float = "0.5.0"
prolog_parser = { path = "../prolog_parser", version = "0.7.14" }
prolog_parser = "0.7.15"
[dependencies.termion]
version = "1.4.0"

4
src/prolog/machine/term_expansion.rs
View File

@@ -94,7 +94,9 @@ impl Machine {
self.reset();
Ok(None)
} else {
Ok(Some(read_term_from_heap(&self.ms, Addr::HeapCell(h))?))
let term = read_term_from_heap(&self.ms, Addr::HeapCell(h))?;
self.reset();
Ok(Some(term))
}
}
}

6
src/prolog/toplevel.rs
View File

@@ -1,5 +1,4 @@
use prolog_parser::ast::*;
use prolog_parser::parser::*;
use prolog_parser::tabled_rc::*;
use prolog::instructions::*;
@@ -709,9 +708,12 @@ impl RelationWorker {
}
}
// used to parse queries in test. mostly.
// used to parse queries in test.
#[cfg(test)]
pub fn parse_term<R: Read>(wam: &Machine, buf: R) -> Result<Term, ParserError>
{
use prolog_parser::parser::*;
let mut parser = Parser::new(buf, wam.atom_tbl(), wam.machine_flags());
parser.read_term(composite_op!(&wam.op_dir))
}